This newsletter is available from the CADP Home page. A few URLs in this page have been updated in November 2011.
Contents 1. Availability of CADP 2006 "Edinburgh" 2. Major enhancements 2.a. The new BCG_GRAPH tool 2.b. The new BCG_MERGE tool 2.c. The new BCG_STEADY tool 2.d. The new BCG_TRANSIENT tool 2.e. The new BISIMULATOR tool 2.f. The new CAESAR 7.0 tool 2.g. The new CAESAR.BDD tool 2.h. The new CAESAR_SOLVE library 2.i. The new DETERMINATOR tool 2.j. The new DISTRIBUTOR tool 2.k. The new EVALUATOR 3.5 tool 2.l. The new EXP.OPEN 2.0 tool 2.m. The new PROJECTOR 2.0 tool 2.n. The new REDUCTOR 5.0 tool 2.o. The new SEQ.OPEN tool 3. Other enhancements 4. How to upgrade? 4.a. System requirements 4.b. Potential compatibility issues 5. Credits and acknowledgements 6. Release notes for CADP 2006 "Edinburgh" (long) 1. Availability of CADP 2006 "Edinburgh" The VASY team of INRIA Rhone-Alpes is pleased to announce the availability of a new release of the CADP toolbox. The new version of CADP is named 2006 "Edinburgh" and dated December 12, 2006. It supersedes all previous versions of CADP. We are happy to dedicate CADP 2006 "Edinburgh" to Laboratory for Foundations of Computer Science at the University of Edinburgh, as a tribute to their achievements in concurrency theory. This is a brief chronology of past events: The previous stable version of CADP was version 2001 "Ottawa" released on July 13, 2001. Since then, we have been continuously enhancing CADP by adding news tools and enhancing existing ones. We prepared and made available 70 successive beta-versions of CADP named 2002-{a, ..., z}, 2003-{a, ..., z}, 2004-{a, ..., k}, and 2005-{a, ..., k}. These successive beta-versions have been installed and tested on thousands of machines in the world. We carefully took into account the valuable feedback received from many users, both in research and industry. This work was completed in December 12, 2006, leading to the current stable release CADP 2006 "Edinburgh". 2. Major enhancements The new release CADP 2006 "Edinburgh" delivers a total of 150 bug fixes and 245 improvements. In particular, it introduces 15 new tools and libraries: BCG_GRAPH, BCG_MERGE, BCG_STEADY, BCG_TRANSIENT, BISIMULATOR, CAESAR.BDD, CAESAR 7.0, CAESAR_SOLVE, DETERMINATOR, DISTRIBUTOR, EVALUATOR 3.5, EXP.OPEN 2.0, PROJECTOR 2.0, REDUCTOR 5.0, and SEQ.OPEN, which we present hereafter. 2.a. The new BCG_GRAPH tool A new tool named BCG_GRAPH was added to CADP. BCG_GRAPH generates several useful kinds of automata in the BCG format, such as bags, FIFO queues, and chaos automata. 2.b. The new BCG_MERGE tool A new tool named BCG_MERGE was added. Designed to work in conjunction with the DISTRIBUTOR tool for distributed LTS generation, BCG_MERGE takes as input a partitioned BCG graph (PBG) and produces a single BCG file combining the various LTS fragments listed in the PBG file. The LTS fragments are encoded themselves as BCG files and possibly located on remote machines, the list of which is indicated in a grid configuration file (GCF) referenced in the PBG file. BCG_MERGE renumbers the states contained in the BCG files containing the LTS fragments in order to obtain a contiguous numbering starting at 0 in the final BCG file. The tool is equipped with a graphical window to monitor the LTS generation in real-time. 2.c. The new BCG_STEADY tool A new tool named BCG_STEADY was added. Jointly developed by the VASY team and Holger Hermanns (University of Saarbrücken), BCG_STEADY performs steady-state analysis of an (extended) continuous-time Markov chain encoded in the BCG format. 2.d. The new BCG_TRANSIENT tool A new tool named BCG_TRANSIENT was added. Jointly developed by the VASY team and Holger Hermanns (University of Saarbrücken), BCG_TRANSIENT performs transient analysis of an (extended) continuous-time Markov chain encoded in the BCG format. 2.e. The new BISIMULATOR tool A new tool named BISIMULATOR was added. Designed according to a modular architecture, BISIMULATOR is an on-the-fly equivalence checker comparing two LTSs modulo a given equivalence or preorder relation. The tool currently provides seven equivalence relations and their associated preorders: strong, branching, observational, tau*.a, safety, trace, and weak trace. BISIMULATOR works by translating the verification problem in terms of the on-the-fly resolution of a boolean equation system, which is performed using the algorithms provided by the CAESAR_SOLVE library. When the two LTSs compared are not equivalent, the tool generates a negative diagnostic (counterexample) in the form of an acyclic graph containing distinguishing transition sequences. Optionally, for branching and observational equivalences, on-the-fly reduction by tau-confluence can be applied on the larger LTS, leading in certain cases to significant gains (two orders of magnitude) in speed and memory. Compared with the older equivalence checker ALDEBARAN, BISIMULATOR exhibits better performances, generates more compact counterexamples, implements a richer set of equivalences and preorders on-the-fly, and is available for any language equipped with an OPEN/CAESAR-compliant compiler. 2.f. The new CAESAR 7.0 tool CAESAR 7.0 is a compiler for the behaviour part of LOTOS. Among other improvements, CAESAR 7.0 implements a static analysis based on live variable analysis, which assigns a canonical value to variables that are no longer used, thus avoiding to distinguish states that only differ by values of variables not used in the future. Compared to its previous version 6.2, CAESAR 7.0 can reduce LTS size by several orders of magnitude (e.g., 10^4), thus allowing larger LOTOS specifications to be handled. 2.g. The new CAESAR.BDD tool A new tool named CAESAR.BDD was added. CAESAR.BDD uses Binary Decision Diagrams to perform various structural analyses on basic Petri nets, such as exploring reachable markings to determine the set of "dead" transitions and the pairs of "concurrent" units. 2.h. The new CAESAR_SOLVE library A new library named CAESAR_SOLVE was added to the OPEN/CAESAR environment. Dedicated to the on-the-fly resolution of boolean equation systems (BESs), the CAESAR_SOLVE library defines an application-independent representation of BESs as boolean graphs, in the same way as OPEN/CAESAR defines a language-independent representation of LTSs. The library currently provides 6 resolution algorithms, based on various exploration strategies of boolean graphs: depth-first search (with variants optimized in memory consumption for acyclic or disjunctive/conjunctive BESs), breadth-first search, etc. These algorithms also generate positive and negative diagnostics (examples and counterexamples) in the form of boolean subgraphs explaining the truth value of a given boolean variable. CAESAR_SOLVE offers 29 primitives for manipulating BESs: creation, destruction, resolution, diagnostic, reading/writing from/to textual files, displaying statistical information about the resolution, etc. It serves as as the computing engine for the EVALUATOR 3.5 model checker, the BISIMULATOR equivalence checker, and the REDUCTOR tool for on-the-fly reduction of LTSs. 2.i. The new DETERMINATOR tool A new tool named DETERMINATOR was added. Jointly developed by the VASY team and Holger Hermanns (University of Saarbrücken), DETERMINATOR takes as input an (extended) continuous-time Markov chain encoded in the BCG format and tries to extract on-the-fly a pure continuous-time Markov chain (i.e., containing only stochastic transitions). Doing so, the tool checks a sufficient condition ensuring that the resulting continuous-time Markov chain is unique, or returns an error otherwise. 2.j. The new DISTRIBUTOR tool A new tool named DISTRIBUTOR was added. Designed with the objective to scale up the capabilities of verification, DISTRIBUTOR performs distributed reachability analysis and LTS generation using several machines connected by a network. The tool can also apply on-the-fly reductions by tau-compression and tau-confluence. DISTRIBUTOR works by launching distributed processes (instances) on the local and remote machines, each instance being in charge of generating an LTS fragment. Communication is performed using standard UNIX sockets. A grid configuration file (GCF) allows to set the list of instances and their various parameters (machine and user account, working directory, size of communication buffers, connection timeout, input files to be copied, connection port, file transfer and launching commands, etc.). The result of the distributed generation is a partitioned BCG graph (PBG) consisting of a collection of BCG files, each one containing an LTS fragment generated by an instance. These fragments can be recombined using the BCG_MERGE tool in order to obtain a unique BCG file containing the entire LTS. DISTRIBUTOR is equipped with a graphical window monitoring in real-time the distributed LTS generation, by displaying the number of visited, explored, and remaining states, the set of labels encountered, the memory and CPU usage, etc. 2.k. The new EVALUATOR 3.5 tool An enhanced version 3.5 of the EVALUATOR on-the-fly model checker for regular alternation-free mu-calculus was added. This tool works by translating the model checking problem into the on-the-fly resolution of a boolean equation system. EVALUATOR 3.5 supersedes the former version EVALUATOR 3.0 and brings several enhancements: The modularity of EVALUATOR was improved, since the resolution of the boolean equation system is performed using the algorithms provided by the CAESAR_SOLVE library instead of the ad-hoc resolution engine of version 3.0. EVALUATOR 3.5 identifies automatically the formulas leading to disjunctive or conjunctive boolean equation systems, which are solved by the optimized algorithm A4 of CAESAR_SOLVE, leading to important memory reductions (proportional to the number of transitions in the LTS) w.r.t. version 3.0. EVALUATOR 3.5 also uses the breadth-first search algorithm A2 to produce small-depth diagnostics and the memory-efficient algorithm A3 of CAESAR_SOLVE to check properties on acyclic LTSs. On most practical examples, EVALUATOR 3.5 runs 3 times faster and consumes 3 times less memory than version 3.0. 2.l. The new EXP.OPEN 2.0 tool A new tool named EXP.OPEN 2.0 was added. This tool maps a network of communicating LTSs onto the OPEN/CAESAR Application Programming Interface, thus allowing the product LTS corresponding to the network to be explored on-the-fly. In the network, the communicating LTSs can be composed using synchronization vectors, parallel composition operators (borrowed from CCS, CSP, mCRL, LOTOS, and E-LOTOS), and/or generalized hide, rename, and cut operators (that support representations of labels using either strings or regular expressions). EXP.OPEN 2.0 implements several partial order reductions preserving various equivalence relations, such as branching equivalence, stochastic branching equivalence, and weak trace equivalence. It can also translate networks of communicating LTSs into various formats to interface with the PEP, TINA, and FC2 tools. It allows to synthesize an "interface" expressing the synchronization constraints imposed on one LTS by (a subset of) its neighbour LTSs in the network. Compared with the older tool EXP.OPEN 1.0, EXP.OPEN 2.0 uses about 2 times less memory and runs from 1.5 to 45 times faster. 2.m. The new PROJECTOR 2.0 tool A new tool named PROJECTOR 2.0 was added. This tool allows to constrain an LTS (represented using the OPEN/CAESAR API) on-the-fly with respect to interface constraints represented by another LTS and a set of synchronizing labels. Among its new features, PROJECTOR 2.0 allows to describe the set of synchronizing labels more compactly using regular expressions. It also provided a monitoring window to get real-time information. PROJECTOR 2.0 is up to 4 times faster than its previous version 1.0. 2.n. The new REDUCTOR 5.0 tool A new tool named REDUCTOR 5.0 was added. This tool allows to reduce an LTS on-the-fly, either partially or totally, modulo one out of 8 relations, namely trace equivalence (which corresponds to automata determinization), weak trace equivalence, tau*.a equivalence, safety equivalence, tau-confluence, tau-compression, tau-divergence, and strong bisimulation. Some of these reductions are performed by solving a boolean equation system on-the-fly using the algorithms provided by the CAESAR_SOLVE library. REDUCTOR 5.0 also allows to display the equivalence classes of the quotient graph modulo strong bisimulation. The closure algorithm used by tau*.a, safety, and weak trace reductions to eliminate invisible transitions has a lower average complexity than in earlier versions of REDUCTOR. 2.o. The new SEQ.OPEN tool A new tool named SEQ.OPEN was added. This tool is an OPEN/CAESAR-compliant compiler that maps a ".seq" file (encoded in the SEQUENCE format of CADP) onto the OPEN/CAESAR API, thus allowing all OPEN/CAESAR tools (e.g., OCIS, EVALUATOR, etc.) to be applied to this ".seq" file. SEQ.OPEN implements an optimized representation of ".seq" files as LTSs, by encoding states and labels as file offsets and using a hash-based cache for labels and transitions in order to avoid storing entire ".seq" files in main memory. For instance, SEQ.OPEN can be used to model check mu-calculus formulas on large run-time traces generated by the simulation of hardware designs. Compared to the alternative approach of converting the ".seq" file into a BCG file (using BCG_OPEN) and then applying the OPEN/CAESAR tool on the resulting BCG file (using BCG_OPEN), SEQ.OPEN is significantly more efficient (up to 50 times faster on large ".seq" files). 3. Other enhancements Besides introducing new tools, CADP 2006 "Edinburgh" also brings significant improvements to existing tools: FOR ALL CADP TOOLS: Improved compatibility with various Linux distributions (see item 916, item 918, item 927, and item 929) Port to Linux for Opteron in 32-bit mode (see item 921) Port to Linux Fedora Core 3 (see item 995) Port to Mac OS X (see item 919, item 932, item 938, item 976, item 1002, and item 1067) Support for Gcc 3.3 under Cygwin (see item 878) Support for Intel Icc compiler (see item 1085) Modernized Windows binaries (see item 1020) SUPPORT AND INSTALLATION: Allowed blanks in path names (see item 832, item 905, item 936, item 958, and item 1021) Allowed blanks in file names (see item 1129) Allowed 8-bit characters in license files (see item 930) Added support for 8-bit characters in source files of several tools (see item 1010) Allowed multiple license files (see item 931 and item 935) Automatic e-mailing of reminder messages for licence renewal (see item 944) Added new options to rfl (see item 1109) Added several verifications to the "tst" script (see item 874, item 879, item 881, item 883, item 964, item 997, and item 1030) Added a command to expand symbolic links under windows ("cadp_adjust") (see item 883 and item 937) Made Installator more practical, robust, and portable (see item 901, item 913, item 945, item 946, item 948, item 952, and item 1016) BCG: Reduced file size for large graphs (see item 872) Increased the number of BCG files that can be opened simultaneously under windows (see item 908) BCG_DRAW / BCG_EDIT: Improved the generated PostScript code (see item 873) Allowed blanks in the "$PRINTER" and "$CADP_PS_VIEWER" variables (see item 1021) BCG_INFO: New options "-path" (see item 807), "-branching", "-compact", "-deadlock", etc. (see item 808), and "-order" (see item 867) Better performances (see item 865) BCG_IO: New formats "-graphviz" (see item 781), "-gml", "-vcg" (see item 799), and "-etmcc" (see item 829) BCG_MIN: Reduced memory usage (see item 828) Increased speed (see item 828) BCG_READ / BCG_WRITE: Support for label strings of arbitrary length (see item 821) BCG_OPEN: Increased speed (see item 871) CAESAR.ADT: Support for label strings of arbitrary length (see item 821) Improved the "NATURAL" and "X_NATURAL" LOTOS data types (see item 848) Maximum number of ".lib" files that can be included increased to 255 (see item 858) Number of significant characters in C identifiers increased to 48 (see item 858) Enabled multiple inclusions of generated ".h" file (see item 859) Reduced memory usage (see item 838) Improved speed of the generated C code (see item 844, item 854, item 880, and item 894) Reduced size of binary labels (see item 876) Added finiteness verification for sorts that need to be iterated (see item 892) Added iterators for "complex" LOTOS sorts (see item 903) Avoided recompilation of ".h" and ".c" under windows (see item 1028) DEMO EXAMPLES: Equiped demos 03, 04, 07, 08, 16, and 24 with SVL scripts (see item 836 and item 839) Simplified SVL scripts of demos 01, 02, 10, and 11 (see item 839) Reduced memory usage in demo 12 (see item 852) Simplified ".mcl" files in demos 02 and 29 (see item 897) Shortened definition of LOTOS sort iterators in demos 02, 05, 07, 08, 09, 11, 16, 20, 23, and 31 (see item 903) Added demos 30 (see item 981), 31 (see item 998), 32 (see item 914), 33 (see item 915), 34 (see item 999), 35, 36 (see item 1015), 37 (see item 1034), 38 (see item 1038), 39 (see item 1039), and 40 (see item 1091) Used of BISIMULATOR instead of ALDEBARAN in 19 demos (see item 1005) Enhanced demo_19 to use improved features of EXEC/CAESAR (see item 1035 and item 1037) EUCALYPTUS: Support for ".seq" files (see item 822) New menu entries (see item 809 and item 1006) New version 2.6 of Eucalyptus (see item 1106) EVALUATOR: Added a library defining CTL in modal mu-calculus (see item 885) Added a concatenation operator in the formula language (see item 896) EXEC/CAESAR: Enhanced "main.c" for EXEC/CAESAR (see item 1035) Added new primitives in "caesar_kernel.h" (see item 843, item 855, item 900, item 1037, and item 1059) OCIS: Improved interface (see item 1001 and item 1002) Ability to re-read arbitrary simulation scenarios (see item 1011) OPEN/CAESAR: Extended/improved statistics displayed by the "caesar_table_1" library (see item 786 and item 884) Improved the "caesar_table_1" library (see item 970) Extended storage capacity of the "caesar_table_1" library (see item 1018) Reduced memory usage of the "caesar_table_1" library for small tables (see item 1050) Improved manual pages (see item 875 and item 895) Improved dispersion of CAESAR_STRING_0_HASH() (see item 968) Extended the definition of "gate" in the "caesar_hide_1" and "caesar_rename_1" libraries (see item 909) Added new "caesar_area_1" library (see item 959 and item 969) Added new "caesar_mask_1" library (see item 960) Added "-hide" and "-rename" options, plus options to control the generated BCG graph, to generator and reductor (see item 961) New "caesar_solve_1" library (see item 979) New and improved hash functions in the "caesar_hash" library (see item 841, item 956, and item 1003) New primitives in "caesar_standard.h" (see item 893, item 923, and item 957) SVL: Improved error and warning messages (see item 775) Improved management of intermediate files (see item 776 and item 987) Improved the definition of "leaf" and "node" reduction (see item 906 and item 992) Support for script parameters (see item 779) Support for shell variables in process instantiations (see item 793) Support for stochastic and probabilistic reduction (see item 870) New option "-indent" (see item 818) Added operators "bag", "chaos", and "fifo" (see item 870) Added a new notation for shell variables representing lists of labels (see item 978) Added a new "refined abstraction" operator (see item 990) Added new equivalences (trace, weak trace) for reduction and comparison (see item 996) Added advanced minimization (see item 795 and item 1031) Added new operators, equivalences, and options (see item 1082 and item 1084) Extended the "abstraction" operator (see item 978) Use of seq.open to process SEQUENCE files (see item 825) Use of exp.open 2.0 instead of exp.open 1.0 (see item 983) Use of partial order reduction to verify composition expressions (see item 1008) TGV: Various improvements (see item 976) 4. How to upgrade? If you are already a registered CADP user, the information for downloading will be sent to you soon by electronic mail. If you do not receive this information, please contact [email protected] If not, please refer to the CADP registration page for more information. 4.a. System requirements CADP 2006 "Edinburgh" can be used on the following computers/operating systems: Sun stations (Sparc processors) running Solaris 8 or higher with a C compiler (such as Sun Studio 11 "cc" compiler or the GNU "gcc") and the Ghostview software PC computers (i386-like processors) running Linux (kernel version >= 2.4, glibc version >= 2.3) PC computers (i386-like processors) running Windows 2000 or XP with the Cygwin and Ghostscript/Gsview software installed (details) Apple computers (PowerPC processors) running Mac OS X 10.2 or higher with the X11 and Ghostscript/Gsview software installed (details) 4.b. Potential compatibility issues In principle, we maintain a strong compatibility between successive versions of CADP. However, changes are sometimes needed to allow progress. We review the changes introduced in CADP 2006 "Edinburgh": Compared to the previous stable version CADP 2001 "Ottawa", the following platforms (architectures/operating systems) are no longer supported: Sparc stations running SunOS 4.1.*, Solaris 2.5, Solaris 2.6, or Solaris 7. In particular, the SunOS 4.1.* binaries have been removed from the CADP distribution (see item 771). PC computers running old versions of Linux with kernel version < 2.4 or glibc version < 2.3. PC computers running Windows 98 or Windows NT4. It may happen that recent versions of CADP still work on some of these old platforms, but we do not make statements on this, as we have discontinued testing CADP on these platforms. The Windows version of CADP has been updated to cope with the evolution of the Cygwin software (see item 827). Windows-specific function definitions have also been moved from the "$CADP/bin.win32/libcaesar.a" library to the "$CADP/bin.win32/libm.a" library (see item 1009). These changes should be transparent to most users. Multiple corrections have been brought to generated and hand-written C code so as to enable compiling with recent compilers without warnings (see item 1051, item 1077, item 1079, and item 1107). The following features, tools, shell scripts or directories have been removed or replaced: DES2AUT (see item 783), FC2OPEN (see item 819), CAESAR.ALDEBARAN (see item 826), EXP2FC2 (replaced by a shell script, see item 934), and "$CADP/com/swapsize" (replaced by "$CADP/bin.*/cadp_memory", see item 789). The shell script "$CADP/bin.*/hostinfo" has been renamed into "cadp_hostinfo" (see item 790). The "games" directory has been removed (see item 856). On-the-fly reduction of ".exp" files using ALDEBARAN has been removed from SVL (see item 983). The ALDEBARAN 6.6 tool has been replaced by ALDEBARAN 7.0 (see item 1052). The EXP.OPEN 1.0 tool has been replaced by EXP.OPEN 2.0, which uses a new library named "libexp_open.a" replacing the older "libexpopen.a". These changes should be upward compatible (see item 933). The PROJECTOR 1.0 tool has been replaced by PROJECTOR 2.0. Command line options and interface files have changed (see item 977). The REDUCTOR 3.0 tool has been replaced by REDUCTOR 4.0 (see item 1049). Modifications of BCG libraries and tools: The BCG include files have been enhanced (see item 797 and item 1009). Errors in hand-written C code are more likely to be decteted. The format of rate/prob labels and the default precision of floating point operations have been modified in BCG_MIN (see item 1089) and BCG_IO (see item 1096). Modifications of CAESAR and CAESAR.ADT: The CAESAR and CAESAR.ADT tools have been modified so as to support iteration over complex, finite data types. In most cases, this change should be upward compatible. Nevertheless, if you have written C code to define your own iterators or to invoke iterators generated by CAESAR.ADT, it is advised to check whether your code is affected or not by the change (see item 903). The default version number for CAESAR.ADT is now 5.2 instead of 4.1 (see item 1033). The NATURAL and X_NATURAL libraries have been enhanced. You may have to slightly change your LOTOS code (see item 848). The optimization E7 of CAESAR has been redesigned, and the semantics of the command-line options has changed (see item 926). The "caesar_kernel.h" API has been enhanced (see item 792, item 843, item 1074, and item 1092). Modifications of OPEN/CAESAR libraries: The OPEN/CAESAR include files have been enhanced (see item 791, item 792, item 910, item 1009). More specifically, the "caesar_graph" API (see item 814 and item 815), the "caesar_hash" library (see item 956), the "caesar_stack_1" library (see item 962), and the "caesar_table_1" library (see item 1050) have been improved. These changes should be transparent to most users. The "caesar_table_1" API has been improved; the new API is more generic and allowed to correct a hidden, but real bug. The code using this API has to be slightly changed (see item 970 and item 1018). So far, the rare problems related to changing the version of CADP that have been reported to us were easily fixed by modifying a few lines of code. If you face unexpected problems, and do not find the solution in the HISTORY file or by applying the conversion script "$CADP/com/upc" to your existing C file(s), do not hesitate to contact [email protected] 5. Credits and acknowledgements The following scientists contributed to the development of CADP 2006 "Edinburgh": At INRIA/VASY: Damien Bergamini David Champelovier Adrian Curic Nicolas Descoubes Hubert Garavel Christophe Joubert Frédéric Lang Radu Mateescu Bruno Ondet Gordon Pace Frédéric Perret Wendelin Serwe Irina Smarandache-Sturm Gilles Stragier Frédéric Tronel Marie Vidal At Saarland University and University of Twente: Holger Hermanns We are extremely grateful to the following scientists, who provided us with valuable feedback and advice about the use of CADP: Jack Abily (Bull, France) Husain Aljazzar (University of Konstanz, Germany) Ludovic Apvrille (ENST, Sophia-Antipolis, France) Carlos Eduardo Araujo Vieira (University of Ceara, Brazil) Thomas Arts (Ericsson, Sweden) Tomas Barros (INRIA/OASIS, Sophia-Antipolis, France) Gregory Batt (INRIA/HELIX, Grenoble, France) Mostefa Belarbi (INSA Lyon, France) Axel Belinfante (University of Twente, The Netherlands) Clara Benac Earle (University of Kent, UK) Samson Bisaro (Université Henri Poincaré, Nancy, France) Stefan Blom (CWI, Amsterdam, The Netherlands) Olivier Bonaventure (Université de Liège, Belgium) Vincent Bories-Azeau (CNES, Toulouse) Howard Bowman (University of Kent, Canterbury, UK) Marc Boyer (ENSEEIHT, Toulouse, France) Volker Braun (University of Dortmund, Germany) Pavel Burget (Czech Technical University) Alban Catry (INRIA/VASY, Grenoble, France) Ghassan Chehaibar (Bull, France) Knut Conrad (Humboldt University, Berlin, Germany) Salem Derisavi (University of Illinois at Urbana/Champaign, USA) Robert de Simone (INRIA/TICK, Sophia-Antipolis, France) Greg Eakman (Boston University, Massachussets, USA) Jérôme Fereyre (INRIA/VASY, Grenoble, France) Benjamin Fontan (ENSICA, Toulouse, France) Benoit Fraikin (University of Sherbrooke, Canada) Lars-Ake Fredlund (SICS, Sweden), Arnaud Gavara (Ecoles des Mines de Nancy, France) Francois Germeau (Université de Liège, Belgium) Susanne Graf (CNRS/Verimag, Grenoble, France) Jan Friso Groote (Techical University of Eindhoven, The Netherlands) Luka Hejtmanek (Masaryk University, Brno, Czech Republic) Marc Herbert (INRIA/VASY, Grenoble, France) Marc Herbstritt (Albert-Ludwigs University, Freiburg, Germany) Holger Hermanns (Saarland University, Germany) Thierry Heuillard (France Telecom R&D, France) Gert Huisman (Vrije Universiteit Amsterdam, The Netherlands) Michel Jankowski (Université de Liège, Belgium) Claude Jard (ENS Cachan, Bretagne, France) Sven Johr (Saarland University, France) Dirk Keck (University of Stuttgart, Germany) Matts Kindahl (Uppsala University, Sweden) Alain Le Guennec (IRISA, Rennes, France) Nathalie Lépy (INRIA/VASY, Grenoble, France) Sylvie Lesmanne (Bull, France) Gregory Lestiennes (Université Paris Sud, Orsay, France) Bert Lisser (CWI, The Netherlands) Christophe Lohr (Concordia University, Montréal, Canada) Andrea Martins Araujo (University Federal do Rio de Janeiro, Brasil) Philippe Marty (Université de Paris-Sud, Orsay, France) Marius Minea (Institute e-Austria, Timisoara, Romania) Patrice Moreaux (Université de Savoie, France) Alexandre Mota (Universidade Federal de Pernambuco, Recife, Brazil) Laurent Mounier (Université Joseph Fourier, Grenoble, France) Humberto Osorio (Universidade Federal do Ceara, Brazil) Dave Parker (University of Birmingham, UK) Charles Pecheur (INRIA/VASY, Grenoble, France) Jean-Christophe Pince (M3 Systems, Lavernose, France) Reza Pulungan (Saarland University, Germany) Jan Rakow (OFFIS, Oldenburg, Germany) Venkatesh P. Ranganath (Kansas State University, USA) Solofo Ramangalahy (Bull, France) Pierre-Olivier Ribet (LAAS-CNRS, Toulouse, France) Judi Romijn (Technical University of Eindhoven, The Netherlands) Meurig Sage (University of Glasgow, UK) Gwen Salaün (INRIA/VASY, Grenoble, France) Juan Jose Sanchez Penas (University of Corunha, Spain) Nicolas Stouls (LSR-IMAG, Grenoble, France) Maciej Szreter (IPIPAN, Warsaw, Poland) Damien Thivolle (INRIA/VASY, Lyon, France) Mohammad Torabi Dashti (CWI, Amsterdam, The Netherlands) Guy Tremblay (Université du Québec à Montréal, Canada) Ken Turner (University of Stirling, Scotland, UK) Yaroslav Usenko (Technical University of Eindhoven, The Netherlands) Jaco van de Pol (CWI, Amsterdam, The Netherlands) Bruno Vivien (INRIA/VASY, Grenoble, France) Katsumi Wasaki (Shinshu University, Nagano, Japan) Yehong Xing (Bull, France) and all other persons we may forget. 6. Release notes for CADP 2006 "Edinburgh" VERSION 2001 "Ottawa" IMPROVEMENT Number: 771 Date: Tue Aug 28 16:34:50 MEST 2001 Author: Hubert Garavel (INRIA/VASY) Files: bin.sun4, games/bin.sun4, gc/bin.sun4, tcl-tk/bin.sun4, INSTALLATION, INSTALLATION_2, INSTALLATION_4. Nature: The "sun4" architecture will no longer be supported after CADP 2001 "Ottawa": consequently, SunOS 4.1.* binaries have been removed from the CADP distribution. The installation files have been updated accordingly. IMPROVEMENT Number: 772 Date: Tue Aug 28 17:59:11 MEST 2001 Authors: Hubert Garavel, Bruno Ondet, Frederic Perret (INRIA/VASY) Files: demos/demo_19/graphics/doc/*.{ps,pdf}, demos/demo_25/cfs.{ps,pdf}, demos/demo_25/=READ_ME.txt, doc/=READ_ME.txt, doc/dvi/*.dvi, doc/ps, doc/pdf, man/pdf, man/*/projector.*, man/*/caesar.adt.*, man/*/svl.*, src/com/cadp_postscript, src/eucalyptus/eucalyptus.tcl Nature: The PostScript documents of the CADP distribution are now also available in Adobe's PDF format. This required many changes: - In the "demos" directory: PDF files have been added for demos 19 and 25 and the existing PostScript files have been compressed in order to save space. - In the "doc" directory: all PostScript documents for which we had the LaTeX source available have been regenerated using vectorial fonts instead of bitmap fonts; the PDF files have been added; the existing documents have been organized in three sub-directories named doc/dvi, doc/ps, and doc/pdf; PostScript files have been compressed. - In the "man" directory: a new sub-directory named man/pdf has been added; the manual pages referring to PostScript files named doc/*.ps have been updated. - The shell-script src/com/cadp_postscript has been extended to display compressed PostScript files (with extension ".ps.Z"), which are uncompressed on the fly. - The EUCALYPTUS graphical user-interface has been extended to handle compressed PostScript files. BUG FIX Number: 773 Date: Fri Aug 31 15:28:31 MEST 2001 Report: Bert Lisser (CWI, The Netherlands), Benoit Fraikin (Univ. of Sherbrooke, Canada) Author: Hubert Garavel (INRIA/VASY) Files: src/com/cadp_hostname, com/tst, com/rfl Nature: Three shell-scripts ("cadp_hostname", TST, and RFL) have been updated so as to avoid an incorrect warning emitted by "tst": License file ``$CADP/LICENSE'' exists *** No license exists for host ``xxx'' ==> Read the INSTALLATION file to apply the RFL procedure BUG FIX Number: 774 Date: Wed Oct 3 17:55:33 MEST 2001 Report: Holger Hermanns (University of Twente) Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel Nature: SVL could generate ``.exp'' files containing a "hide all but" operator, which is not available for this format. This was not accepted by the tools reading the EXP format (ALDEBARAN, EXP.OPEN, etc.). The "all but" feature is at now processed correctly using the BCG_LABELS tool. BUG FIX Number: 775 Date: Thu Oct 4 10:00:32 MEST 2001 Authors: Frederic Lang and Hubert Garavel (INRIA/VASY) Files: com/svl, bin.*/svl_kernel, src/svl/standard Nature: Option -sh of SVL was not working properly (shell options passed to SVL were ignored). This problem was fixed. Also, all warnings and error messages issued by SVL have been rewritten in order to be simpler and self-explanative. BUG FIX Number: 776 Date: Mon Oct 15 18:48:52 MEST 2001 Authors: Hubert Garavel (INRIA/VASY) and Holger Hermanns (Univ. Twente) Files: man/*/bcg_min.* Nature: The manual page of BCG_MIN was modified to be compatible with the BCG_MIN tool: when option "-rate" is selected, BCG_MIN will check for conflicts between "rate" and hidden transitions (and remove conflicting "rate" transitions) if the "-branching" option is selected (when the "-strong" option is selected, no such checking is done). BUG FIX Number: 777 Date: Thu Oct 18 15:54:17 MEST 2001 Report: Thomas Arts (Ericsson, Sweden) Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard, bin.*/svl_kernel Nature: When processing an instruction of the form: "file.bcg" = rename A -> B in "file.aut" SVL would generate "file.bcg" and remove it afterwards. SVL was designed under the assumption that two files with the same prefix would necessarily represent LTSs with the same behavior. Hence, if "file.aut" had to be converted to the BCG format, then the converted graph was stored in "file.bcg", but still considering that "file.bcg" was a temporary file that should be removed when SVL terminates. Although documented in the SVL manual, this assumption proved to be over-constraining, as users may ignore SVL conventions or forget about them. To avoid user files from being removed or modified accidentally, this assumption has been abandoned in the new version of SVL, in which every temporary file is given a unique name. BUG FIX Number: 778 Date: Thu Oct 25 17:58:11 MEST 2001 Report: Holger Hermanns (University of Twente) Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel Nature: Strings enclosed in quotes were converted to uppercase. This has been changed since it did not satisfy the specification of SVL. IMPROVEMENT Number: 779 Date: Mon Nov 19 11:15:18 MET 2001 Report: Thomas Arts (Ericsson, Sweden) Authors: Frederic Lang and Hubert Garavel (INRIA/VASY) Files: com/svl, man/*/svl.*, src/eucalyptus/eucalyptus.tcl Nature: SVL scripts can now be parameterized with arguments passed on the command line when the SVL compiler is invoked. These parameters are referred to using the classical notations: $#, $*, $@, $1, $2, etc., exactly as in Bourne shell scripts. The EUCALYPTUS graphical user-interface was modified: when an SVL script is to be executed, a window opens, in which it is possible to input the aforementioned parameters. IMPROVEMENT Number: 780 Date: Mon Nov 19 16:28:20 MET 2001 Author: Frederic Lang (INRIA/VASY) Files: demos/demo_20/=READ_ME.txt, demos/demo_27/=READ_ME.txt Nature: The =READ_ME.txt files of demos 20 and 27 have been extended with performance tables for compositional verification. IMPROVEMENT Number: 781 Date: Thu Nov 22 12:06:30 MET 2001 Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: bin.*/bcg_io, bin.*/libBCG_IO.a, man/*/bcg_io.*, src/eucalyptus/eucalyptus.tcl Nature: A new option ``-graphviz'' was added to BCG_IO in order to produce the ``.dot'' format needed by ATT's graph visualization package GRAPHVIZ. This offers to CADP users a new mean to visualize BCG graphs, in addition to the advanced capabilities already provided by BCG_DRAW and BCG_EDIT. In the EUCALYPTUS graphical user-interface, this functionality is now accessible using the "Convert" item in contextual menus. IMPROVEMENT Number: 782 Date: Thu Jan 17 18:56:17 MET 2002 Authors: Hubert Garavel, Frederic Lang, and Radu Mateescu (INRIA/VASY) Files: doc/*/Garavel-Mateescu-Smarandache-01.*, doc/*/Garavel-Lang-Mateescu-01.*, doc/*/Garavel-Lang-Mateescu-02.*, doc/*/Lang-02.*, doc/=READ_ME.txt Nature: A revised version of the Garavel-Mateescu-Smarandache-01 paper has been installed in the "doc" directory. Three new papers (on CADP 2001, SVL, and LOTOS NT respectively) have also been added. IMPROVEMENT Number: 783 Date: Fri Jan 18 18:47:41 MET 2002 Author: Hubert Garavel (INRIA/VASY) Files: bin.*/des2aut, bin.*/READ_ME, man/*/des2aut.* Nature: As foreseen (see item #729 above), the Des2Aut tool has been removed, since Des2Aut is superseded by SVL entirely. BUG FIX Number: 784 Date: Thu Apr 4 10:36:30 MEST 2002 Report: Solofo Ramangalahy (BULL) Author: Hubert Garavel (INRIA/VASY) Files: com/caesar.open Nature: A bug was fixed in the "caesar.open" shell-script, which prevented the "-include" option from working correctly. BUG FIX Number: 785 Date: Thu Apr 4 12:54:09 MEST 2002 Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard Nature: The string prefixing failure labels in PROJECTOR and EXP.OPEN had changed from ":fail:" to ":FAIL:". The change has now been passed on to SVL, checking the presence of ":FAIL:" in LTSs generated compositionally using abstraction. IMPROVEMENT Number: 786 Date: Wed Apr 10 10:27:36 MEST 2002 Author: Hubert Garavel (INRIA/VASY) Files: bin.*/libcaesar.a Nature: Various enhancements have been brought to OPEN/CAESAR's "caesar_table_1" library: - Function CAESAR_PRINT_TABLE_1() now displays statistics about the average, minimal, and maximal length of collision lists. - When the user specifies a maximal number of elements in the table (by giving to the parameter CAESAR_LIMIT_SIZE of CAESAR_CREATE_TABLE_1() a value different from zero), changes were made to reduce the number of pages, the size of pages, and the number of hash table entries. For tables with few elements, the gain in memory can be up to 75,000 bytes per table, together with a noticeable gain in speed. IMPROVEMENT Number: 787 Date: Mon Apr 15 17:11:43 MEST 2002 Author: Radu Mateescu (INRIA/VASY) Files: doc/*/mateescu-02.* Nature: A new paper on EVALUATOR has been added to the CADP release. BUG FIX Number: 788 Date: Fri Apr 19 18:34:24 MEST 2002 Report: Arnaud Gavara (Ecoles des Mines de Nancy, France) Author: Hubert Garavel (INRIA/VASY) Files: com/rfl Nature: In some cases (depending on the environment variable LC_ALL), the RFL command could generate an invalid license file, in which the dates were not expressed in English. This problem was solved. IMPROVEMENT Number: 789 Date: Mon Apr 22 18:50:09 MEST 2002 Author: Hubert Garavel (INRIA/VASY) Files: bin.*/cadp_memory, com/swapsize, INSTALLATION_2, src/com/open_caesar/predictor.c, man/*/predictor.l Nature: The "com/swapsize" command has been replaced by an improved version named "bin.*/cadp_memory". This new version brings support for the Windows operating system; it also gives more accurate results for Solaris and Linux; finally, it takes into account the new environment variable $CADP_MEMORY described in the updated version of file INSTALLATION_2. The PREDICTOR tool of OPEN/CAESAR has been modified to use "cadp_memory" instead of "swapsize". Its manual page has been updated. IMPROVEMENT Number: 790 Date: Tue Apr 23 09:35:26 MEST 2002 Author: Hubert Garavel (INRIA/VASY) Files: bin.*/cadp_hostinfo, bin.*/hostinfo, com/rfl, com/tst, src/eucalyptus/eucalyptus.tcl Nature: To avoid conflicts with other software, the program "hostinfo" in directory $CADP/bin.* has been renamed into "cadp_hostinfo". The RFL, TST, and EUCALYPTUS tools have been updated accordingly. IMPROVEMENT Number: 791 Date: Tue Apr 30 09:12:56 MEST 2002 Author: Hubert Garavel (INRIA/VASY) Files: incl/caesar_*.h, bin.*/libcaesar.a, bin.*/libbcg_open.a, bin.*/caesar, bin.*/exp2c, bin.*/libseq_open.a, man/*/caesar_standard.*, doc/*/Garavel-92-a.* Nature: The OPEN/CAESAR include files (contained in $CADP/incl) have been enhanced in several respects: - The C function prototypes have been activated in order to enable C++ compiling. - A bug was fixed in file "caesar_diagnostic_1.h" regarding the type of the first arguments of the two functions CAESAR_CREATE_DIAGNOSTIC_1() and CAESAR_DELETE_DIAGNOSTIC_1() which are of type (CAESAR_TYPE_DIAGNOSTIC_1 *) instead of CAESAR_TYPE_DIAGNOSTIC_1. - The "caesar_graph.h" file was modified to ensure that types CAESAR_TYPE_STATE and CAESAR_TYPE_LABEL are systematically defined, since these types are used in function prototypes (such as CAESAR_COMPARE_STATE()). - All OPEN/CAESAR compliant compilers (i.e., BCG_OPEN, CAESAR, EXP.OPEN, and SEQ.OPEN) have been updated so as not to define CAESAR_TYPE_STATE and CAESAR_TYPE_LABEL any longer, but instead to import the definitions present in file "caesar_graph.h" (this requires to set, in the C code generated or used by these compilers, the macro CAESAR_GRAPH_IMPLEMENTATION to an integer number expressing the current OPEN/CAESAR version number). - The "caesar_graph" manual page was updated to explain how to define the CAESAR_GRAPH_IMPLEMENTATION macro and the CAESAR_TYPE_STATE and CAESAR_TYPE_LABEL types. IMPROVEMENT Number: 792 Date: Tue Apr 30 20:37:14 MEST 2002 Report: Jack Abily and Solofo Ramangalahy (BULL) Author: Hubert Garavel (INRIA/VASY) Files: incl/caesar_kernel.h, bin.*/caesar Nature: The C function prototypes contained in file "caesar_kernel.h" file, which defines the EXEC/CAESAR API, have been activated. Also, file "caesar_kernel.h" now defines the CAESAR_TYPE_STATE and CAESAR_TYPE_LABEL types, in the same way as for file "caesar_graph.h" (see item #791 above). The C code generated by CAESAR with option "-exec" has been updated to reflect these changes. IMPROVEMENT Number: 793 Date: Tue May 21 15:24:19 MEST 2002 Report: Hubert Garavel (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard, bin.*/svl_kernel, man/*/svl.l Nature: It is now possible to use shell variables in process calls. To this aim, process calls can be written between quotes. Examples: (1) % for PROC in RECEIVER TRANSMITTER MEDIUM1 MEDIUM2 % do "$PROC.bcg" = generation of "bitalt.lotos":"$PROC" % done generates in turn the graphs of "bitalt.lotos":RECEIVER, "bitalt.lotos":TRANSMITTER, "bitalt.lotos":MEDIUM1, and "bitalt.lotos":MEDIUM2. (2) % for PROC in P1 P2 % do % for GATE in SEND RECV % do "$PROC_$GATE.bcg" = generation of "spec.lotos":"$PROC [$GATE]" % done % done generates in turn the graphs of "spec.lotos":P1 [SEND], "spec.lotos":P1 [RECV], "spec.lotos":P2 [SEND], and "spec.lotos":P2 [RECV]. Similarly, gates (occurring in parallel composition, semi- composition operators, and process calls) and process identifiers can now be specified using shell variables (enclosed between double quotes). In Example (2) above, "$PROC [$GATE]" can equivalently be written "$PROC" ["$GATE"]. In particular, it is now possible to parameterize parallel composition expressions, as in the following SVL script: "result.bcg" = "$1.bcg" |[ "$3" ]| "$2.bcg" (* usage : svl arg1 arg2 arg3 * where arg1 and arg2 are two BCG graphs to compose in * parallel, and arg3 denotes the gates on which these * graphs must be synchronized. For instance, * svl file1 file2 "G1, G2" * computes "file1.bcg" |[G1, G2]| "file2.bcg" *) IMPROVEMENT Number: 794 Date: Fri May 31 11:13:44 MEST 2002 Authors: Hubert Garavel and Bruno Ondet (INRIA/VASY) Files: INSTALLATION_0, INSTALLATION_2, cadp_cygwin.com com/tst, src/com/cadp_postscript, src/com/cadp_psbox Nature: The directives for installation have been updated to take into account the recent versions of Cygwin, GhostScript, and Gsview, and to mention that ".profile" rather than ".bashrc" should be used as the startup file. The "tst" command has been updated to report when an existing ".bashrc" file should be renamed into ".profile", and to reflect the fact that recent versions of Cygwin (1.3.10 and beyond) come with a "/bin/indent" command. BUG FIX Number: 795 Date: Thu Jun 6 11:31:57 MEST 2002 Report: Clara Benac Earle (University of Kent at Canterbury, UK) Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard Nature: ALDEBARAN might take a lot of memory when minimizing for the safety equivalence minimization ("-smin" option). In the case of abstraction interface graphs, when this minimization failed, SVL did not try to apply minimization for stronger equivalence first, before applying safety minimization. This was fixed: the safety minimization of abstraction interfaces now invokes the advanced minimization function of SVL, i.e., if ALDEBARAN fails, SVL will invoke first BCG_MIN with a stronger equiva- lence than safety, and later retry ALDEBARAN on the minimized graph. IMPROVEMENT Number: 796 Date: Fri Jun 7 15:21:12 MEST 2002 Authors: Hubert Garavel and Bruno Ondet (INRIA/VASY) Files: bin.*/caesar Nature: The maximal number of states that can be stored by CAESAR was increased from 16,777,216 (i.e., 2^24) up to 4,294,967,296 (i.e., 2^32). On Intel-based machines (architectures "iX86" and "win32"), accesses have been made faster by using word operations instead of byte operations. IMPROVEMENT Number: 797 Date: Tue Jun 25 09:19:03 MEST 2002 Report: Vincent Bories-Azeau (CNES, Toulouse) and Gilles Stragier (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: incl/bcg_*.h Nature: C function prototypes have been added to all BCG functions declared in the "bcg_*.h" include files. This enables programs written in C++ to invoke the BCG primitives. BUG FIX Number: 798 Date: Tue Jun 25 18:50:22 MEST 2002 Report: Salem Derisavi (Univ. of Illinois at Urbana/Champaign, USA) Authors: Holger Hermanns (Univ. of Sarrebruck, Germany) and Hubert Garavel (INRIA/VASY) Files: bin.*/bcg_min Nature: A bug in BCG_MIN was discovered: when minimizing certain stochastic systems, the reduced Markov chain produced by BCG_MIN was not always minimal (i.e., in some cases, it did not satisfy the strong lumping condition). This problem was fixed. IMPROVEMENT Number: 799 Date: Fri Jun 28 11:10:55 MEST 2002 Authors: Hubert Garavel and Bruno Ondet (INRIA/VASY) Files: bin.*/bcg_io, bin.*/libBCG_IO.a, man/*/bcg_io.*, src/eucalyptus/eucalyptus.tcl Nature: Two new options ``-gml'' and ``-vcg'' were added to BCG_IO in order to produce the ``.gml'' and ``.vcg'' formats needed by the graph drawing tools TULIP and VCG (for more information see http://dept-info.labri.u-bordeaux.fr/~auber/projects/tulip and http://rw4.cs.uni-sb.de/~sander/html/gsvcg1.html respectively). This provides two new ways to visualize BCG graphs, in addition to BCG_DRAW and BCG_EDIT, and to the Graphviz connection (see above #781). In the EUCALYPTUS graphical user-interface, this functionality is now accessible using the "Convert" item in contextual menus. BUG FIX Number: 800 Date: Sat Jun 29 10:41:33 MEST 2002 Report: Jack Abily and Solofo Ramangalahy (BULL) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/caesar Nature: In the C code generated by CAESAR (using any option such as "-aldebaran", "-bcg", "-exec", "-open", "-simulator"), two pointers remained uninitialized (one in the table of positions and one in the table of successors), which could lead to errors (segmentation fault / core dump) on some examples. This problem was fixed. IMPROVEMENT Number: 801 Date: Thu Jul 4 19:59:46 MEST 2002 Author: Hubert Garavel (INRIA/VASY) Files: doc/*/Garavel-Hermanns-02.*, doc/=READ_ME.txt Nature: A technical report explaining how to use CADP for compositional verification and performance evaluation of probabilistic/stochastic systems was added. IMPROVEMENT Number: 802 Date: Fri Jul 19 14:27:13 MEST 2002 Report: Nicolas Stouls (LSR-IMAG, Grenoble, France) Author: Hubert Garavel (INRIA/VASY) Files: man/*/bcg_read.*, man/*/bcg_write.* Nature: The "bcg_read" and "bcg_write" manual pages have been enhanced by giving the command-line needed to compile programs making use of the "bcg_read" and "bcg_write" APIs. IMPROVEMENT Number: 803 Date: Fri Jul 19 14:41:51 MEST 2002 Report: Thierry Heuillard (France Telecom R&D) Author: Hubert Garavel (INRIA/VASY) Files: INSTALLATION_0 Nature: The directives for installing Cygwin on Windows have been enhanced in order to use the option "Use IE5 Settings" when FTP transfers must be done through a proxy. IMPROVEMENT Number: 804 Date: Fri Aug 2 20:02:26 MEST 2002 Report: Mostefa Belarbi (INSA Lyon, France) Author: Hubert Garavel (INRIA/VASY) Files: com/rfl Nature: RFL has been enhanced to check the validity of the arguments given with its options "-f", "-d", "-i", "-l", "-n", and "-a" and to emit better error messages when such arguments are missing or incorrect. BUG FIX Number: 805 Date: Fri Aug 23 15:27:47 MEST 2002 Report: Pavel Burget (Czech Technical University) Author: Hubert Garavel (INRIA/VASY) Files: gc/bin.*/libgc.a Nature: The Boehm-Demers garbage collection library has been upgraded from version 5.3 to version 6.0. The version 5.3 used so far was not compatible with Linux RedHat 7.3 and would cause a segmentation fault when invoking CAESAR with "-gc" option. BUG FIX Number: 806 Date: Wed Sep 4 17:08:11 MEST 2002 Author: Frederic Lang (INRIA/VASY) Files: src/installator/installator.tcl Nature: In the case where $CADP and $CADP_TMP would be located in the same disk partition (which is unfrequent on Unix, but may occur on Windows/Cygwin), INSTALLATOR would not check properly that sufficient disk space is available to install CADP, and thus could finish abruptly. This problem was fixed. BUG FIX Number: 807 Date: Mon Sep 23 20:29:37 MEST 2002 Report: Pierre-Olivier Ribet (LAAS-CNRS, Toulouse, France) Authors: Nicolas Decoubes, Hubert Garavel, and Bruno Ondet (INRIA/VASY) Files: com/bcg_info, bin.*/libbcg_info*, man/*/bcg_info.*, man/*/aldebaran.* Nature: Contrary to what was stated in the ALDEBARAN manual page, the "-path" option of ALDEBARAN does not always compute the shortest path leading to a given state: for one example considered at LAAS-CNRS, ALDEBARAN produced at path with 1232 transitions whereas the shortest path has 852 transitions only. The problem has been addressed in several ways: - The manual page for ALDEBARAN was updated to mention that option "-path" does not always produce the shortest path; - The BCG_INFO tool was enhanced with a new option "-path" that computes the shortest path; see "man bcg_info" for details. IMPROVEMENT Number: 808 Date: Tue Sep 24 14:55:28 MEST 2002 Authors: Hubert Garavel and Bruno Ondet (INRIA/VASY) Files: com/bcg_info, bin.*/libbcg_info*, man/*/bcg_info.* Nature: Besides the aforementioned "-path" option, BCG_INFO was enhanced with many new options, including "-branching", "-compact", "-deadlock", "-deterministic", "-hidden", "-line", "-unreachable", and "-verbose". See "man bcg_info" for a description of these new features. IMPROVEMENT Number: 809 Date: Wed Sep 25 12:03:38 MEST 2002 Author: Hubert Garavel (INRIA/VASY) Files: com/xeuca, src/com/xeuca_man, src/eucalyptus/eucalyptus.tcl, src/eucalyptus/xeucarc_standard, man/*/xeuca.* Nature: The EUCALYPTUS graphical user interface has been updated in several respects: - To display general properties of LTSs, EUCALYPTUS now uses "bcg_info" (instead of "aldebaran -info", which is kept but only for ".exp" files). - To display the path leading to a given state (menu "Find Path to State..."), EUCALYPTUS now uses "bcg_info -path" rather than "aldebaran -path". - To search for deadlocks in LTSs, EUCALYPTUS now uses "bcg_info -deadlock" rather than "aldebaran -dead". - Two new menu entries for LTSs have been added: "Find nondeterminism..." and "Find unreachable states", which make use of the new features of BCG_INFO. - For ".aut", ".bcg", ".exp", ".fc2", and ".seq" files, the menu entry "Information" was renamed into "Properties" and moved at the bottom of the menu list. - The Eludo tool was removed from EUCALYPTUS, since the Eludo toolkit can only be used on Sparc machines running SunOS 4.1.3, whereas CADP no longer support SunOS 4.* machines. BUG FIX Number: 810 Date: Fri Sep 27 15:49:10 MEST 2002 Report: Radu Mateescu (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/libcaesar.a Nature: In function CAESAR_PRINT_TABLE_1() of OPEN/CAESAR's "table_1" library, the statistics displayed for "successes" and "failures" were permuted; the correct order was restored. BUG FIX Number: 811 Date: Fri Sep 27 16:26:58 MEST 2002 Report: Radu Mateescu (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/libcaesar.a Nature: Function CAESAR_COPY_EDGE_LIST(L1, L2) had a bug: when list L2 was empty, the value of *L1 was left uninitialized instead of being set to NULL. This problem was fixed. BUG FIX Number: 812 Date: Fri Sep 27 17:45:04 MEST 2002 Author: Hubert Garavel (INRIA/VASY) Files: bin.*/libcaesar.a Nature: Contrary to the OPEN/CAESAR manual, the formatting function CAESAR_FORMAT_EDGE_LIST() had no effect: the ouptut of CAESAR_PRINT_EDGE_LIST() was controlled by CAESAR_FORMAT_EDGE() instead of CAESAR_FORMAT_EDGE_LIST(). This problem was solved. BUG FIX Number: 813 Date: Wed Oct 2 15:21:27 MEST 2002 Report: Radu Mateescu (INRIA/VASY) Author: Laurent Mounier (VERIMAG) Files: bin.*/aldebaran Nature: A bug was corrected concerning the ``-imin'' option of ALDEBARAN (minimization modulo the tau*.a equivalence relation). On graphs larger than 65536 states, this option produced incorrect minimized graphs (not equivalent to the initial graphs modulo the tau*.a relation). IMPROVEMENT Number: 814 Date: Fri Oct 4 10:27:16 MEST 2002 Author: Hubert Garavel (INRIA/VASY) Files: incl/caesar_graph.h, man/*/caesar_graph.*, man/*/caesar_edge.*, doc/*/Garavel-92-a.*, bin.*/caesar, bin.*/libbcg_open.a, bin.*/libcaesar.a, src/open_caesar/declarator.c, src/com/cadp_decl, com/upc Nature: The CAESAR_RANK_LABEL() function was removed from OPEN/CAESAR's "caesar_graph" API, for three reasons: - This function was difficult to implement when the set of labels was not known in advance, and in absence of any particular information on the form/structure of labels. - The computations needed to implement CAESAR_RANK_LABEL(), i.e., a quick sort on the label strings, would slow down BCG_OPEN on graphs with many different labels. - Experience taught that this function, originally intended to do a pre-sorting of label lists, was in fact seldom used. Two OPEN/CAESAR compliant compilers (CAESAR and BCG_OPEN) have been updated to remove the CAESAR_RANK_LABEL() function. The EXP.OPEN tool was left unchanged since it is to be replaced later by an entirely new version. The DECLARATOR tool was updated to detect the OPEN/CAESAR compilers that still produce the CAESAR_RANK_LABEL() function. Following the removal of CAESAR_RANK_LABEL(), the function CAESAR_CREATE_EDGE_LIST() of the "casar_edge" library was modified: from now on, the cases 3 and 4 are identical to the cases 5 and 6, respectively. For cases 1 and 2, the documen- tation was improved, with explanations being made independent from LOTOS. The "upc" program was updated so as to detect and report the uses of CAESAR_RANK_LABEL() and CAESAR_CREATE_EDGE_LIST(). IMPROVEMENT Number: 815 Date: Fri Oct 4 18:28:33 MEST 2002 Report: Alain Le Guennec (IRISA, Rennes, France) Author: Hubert Garavel (INRIA/VASY) Files: incl/caesar_graph.h, man/*/caesar_graph.*, doc/*/Garavel-92-a.*, bin.*/caesar, bin.*/libbcg_open.a, src/com/declarator.c, com/upc Nature: The CAESAR_DUMP_LABEL() function was removed from OPEN/CAESAR's "caesar_graph" API, for two reasons: - This function was prone to buffer overrun problems, since it is impossible to predict, in the general case, the length of the character string corresponding to a binary label; thus, it was never possible to guarantee in advance that the character string passed to CAESAR_DUMP_LABEL() would be large enough to contain the character representation of the binary label passed to CAESAR_DUMP_LABEL(). - This function was not much used, especially in comparison with CAESAR_STRING_LABEL(), which seemed to be preferred. Two OPEN/CAESAR compliant compilers (CAESAR and BCG_OPEN) have been updated to remove the CAESAR_DUMP_LABEL() function. The EXP.OPEN tool was left unchanged since it is to be replaced later by an entirely new version. The DECLARATOR tool was updated to detect the OPEN/CAESAR compilers that still produce the CAESAR_RANK_LABEL() function. The "upc" program was updated so as to detect and report any use of CAESAR_DUMP_LABEL(). IMPROVEMENT Number: 816 Date: Mon Oct 7 12:14:14 MEST 2002 Author: Hubert Garavel (INRIA/VASY) Files: bin.*/caesar Nature: The code generated by CAESAR (with option "-open") for the CAESAR_STRING_LABEL() function of OPEN/CAESAR's "caesar_graph" API was optimized in the particular case of labels that consist of a gate only, without experiment offers (this encompasses the case of tau-transitions). For instance, on the alternating bit example given in "demos/demo_02" with 65 different messages, the time needed by GENERATOR to produce the corresponding BCG file was reduced from 47.4 down to 20.6 seconds. BUG FIX Number: 817 Date: Thu Oct 17 16:12:33 MEST 2002 Report: Bruno Ondet (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: src/open_caesar/declarator.c Nature: A minor memory leak problem was fixed in the DECLARATOR program, which checks if an OPEN/CAESAR compiler is compliant wrt the OPEN/CAESAR API. IMPROVEMENT Number: 818 Date: Fri Oct 18 13:21:58 MEST 2002 Report: Frederic Tronel (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: com/svl, bin.*/svl_kernel, man/*/svl.* Nature: Two improvements have been brought to SVL: - The "-expand" command now comes with a "-indent" option that allows to set the number of blank characters used to indent lines. - When the same reduction occurs right before and right after a renaming, SVL eliminates the reduction occurring right before. This optimizes "leaf reduction" in the presence of renaming. IMPROVEMENT Number: 819 Date: Mon Oct 21 15:55:14 MEST 2002 Report: Robert de Simone (INRIA/TICK, Sophia-Antipolis, France) Author: Hubert Garavel (INRIA/VASY) Files: com/fc2open, bin.*/svl_kernel, man/*/fc2open.*, man/*/declarator.*, man/*/executor.*, man/*/evaluator.*, man/*/exhibitor.*, man/*/generator.*, man/*/ocis.*, man/*/predictor.*, man/*/projector.*, man/*/reductor.*, man/*/simulator.*, man/*/terminator.*, man/*/xsimulator.*, src/eucalyptus/default/fc2open, src/eucalyptus/default/fc2open2c, src/eucalyptus/fc2open.l, src/eucalyptus/eucalyptus.tcl, src/svl/standard Nature: The FC2OPEN tool developed at Sophia-Antipolis, which allowed to map onto the OPEN/CAESAR "caesar_graph" API networks of communicating LTSs expressed in the "parallel" FC2 format, is no longer maintained (its source code was lost during the team reorganization consecutive to the creation of the Esterel Technology company). The documentation of CADP, the EUCALYPTUS graphical interface and the SVL language have been updated so as to remove any reference to FC2OPEN. BUG FIX Number: 820 Date: Mon Oct 21 17:08:37 MEST 2002 Report: Frederic Lang (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/exp2fc2 Nature: A bug was fixed, which caused EXP2FC2 to loop indefinitely in certain cases. BUG FIX Number: 821 Date: Tue Oct 22 20:00:09 MEST 2002 Report: Dirk Keck (University of Stuttgart, Germany) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, bin.*/libBCG.a, bin.*/libBCG_IO.a Nature: When generating BCG graphs with very long labels (more than 5,000 characters), CAESAR and BCG would make segmentation fault errors due to string buffer overflow. This problem was addressed and solved: from now on, the "bcg_write" API accepts label strings of unlimited length. Moreover, code has been added in the BCG library in order to avoid "memory leak" problems detected by Purify (the table of gates and the table of labels are now properly disallocated when no longer used). IMPROVEMENT Number: 822 Date: Wed Oct 23 18:09:47 MEST 2002 Authors: Hubert Garavel, Bruno Ondet, and Radu Mateescu (INRIA/VASY) Files: com/seq.open, bin.*/libseq_open.a, man/*/seq.open.*, man/*/declarator.*, man/*/executor.*, man/*/evaluator.*, man/*/exhibitor.*, man/*/generator.*, man/*/ocis.*, man/*/predictor.*, man/*/projector.*, man/*/reductor.*, man/*/simulator.*, man/*/terminator.*, man/*/xsimulator.*, src/eucalyptus/eucalyptus.tcl Nature: A new tool named SEQ.OPEN was added to CADP. SEQ.OPEN is an OPEN/CAESAR-compliant compiler that maps a ".seq" file (coded in CADP's SEQUENCE format) onto OPEN/CAESAR's "caesar_graph" API, thus allowing the application of all OPEN/CAESAR tools (e.g., OCIS, EVALUATOR...) to this ".seq" file. It is worth noticing that the functionality provided by SEQ.OPEN could also be obtained by first converting the ".seq" file into a ".bcg" file (using BCG_IO) and then applying the OPEN/CAESAR tool on the resulting ".bcg" file (by means of BCG_OPEN). However, SEQ.OPEN is more efficient (e.g., up to 50 times faster on large ".seq" files) as it avoids the preliminary translation into ".bcg" and does not store the entire ".seq" file in main memory. A first prototype of SEQ.OPEN was developed in December 2000, in the framework of the FormalFame collaboration between BULL and VASY. This tool served to model-check mu-calculus formulas on traces generated by BULL multiprocessor systems. In 2001 and 2002, SEQ.OPEN was entirely rewritten in order to support the complete SEQUENCE format (including comments and multiple sequences separated by the "[]" operator) and to implement the entire "caesar_graph" API. SEQ.OPEN was also made two times faster by removing an internal call to the C compiler, by representing labels using file offsets, and by adding a hash-based cache to store labels and transitions. The CADP manual pages have been updated to reflect the existence of SEQ.OPEN, and the EUCALYPTUS graphical user- interface was modified to handle ".seq" files using SEQ.OPEN (for on-the-fly processing) rather than ".bcg" files. BUG FIX Number: 823 Date: Thu Oct 24 20:32:32 MEST 2002 Author: Hubert Garavel (INRIA/VASY) Files: src/eucalyptus/eucalyptus.tcl Nature: The EUCALYPTUS graphical user interface was improved: - The mechanism for checking the compatibility of ".xeucarc" startup files contained a problem that was fixed. - The "Save preferences" feature could generate improper version numbers; this was fixed. - All menu entries have been uniformized (single initial capital letter, and "..." notion everywhere needed). BUG FIX Number: 824 Date: Mon Oct 28 16:44:11 MET 2002 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel Nature: On Linux, parsing of renaming rules in SVL scripts could have side effects on other labels of the SVL script. This problem was solved. IMPROVEMENT Number: 825 Date: Mon Nov 4 15:38:46 MET 2002 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard Nature: The SVL compiler was modified so as to use the new SEQ.OPEN tool (see item #822 above). Whenever an OPEN/CAESAR applica- tion program is launched on a ".seq" file, SVL will no longer invoke BCG_IO/BCG_OPEN, but will use SEQ.OPEN instead. A special variable $SEQ_OPEN_OPTIONS was added to SVL in order to contain particular options for SEQ.OPEN. IMPROVEMENT Number: 826 Date: Tue Nov 12 12:32:29 MET 2002 Author: Hubert Garavel (INRIA/VASY) Files: com/caesar.aldebaran, man/*/caesar.aldebaran.* Nature: The "caesar.aldebaran" shell-script was removed from CADP, since this shell-script was made useless and obsolete by the introduction of SVL in January 2001 (see item #729 above). IMPROVEMENT Number: 827 Date: Wed Nov 13 16:45:24 MET 2002 Report: Bruno Ondet (INRIA/VASY) Authors: Hubert Garavel and Nicolas Descoubes (INRIA/VASY) Files: src/com/cadp_cc, src/com/windows/* Nature: The Windows version of CADP has been updated to cope with the evolution of the Cygwin software, which, in October 2002, moved from Gcc 2.95.3-10 to Gcc 3.2. Because of this compiler change, the BCG tools did not work with the latest version of Cygwin, and would fail with an error message of the form: seek must be permitted for a bcg_file in BCG_OPEN_BINARY This problem was addressed by enhancing the "cadp_cc" shell script and the contents of the "src/com/windows" directory: a sub-directory named "bin.win32" was added; the existing file gcc-crtdll-specs was renamed into gcc-crtdll-specs-2.95.2-6; and a new file named "gcc-crtdll-specs-3.2" was added. IMPROVEMENT Number: 828 Date: Wed Nov 20 11:31:03 MET 2002 Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/bcg_min Nature: During October-November 2002, many internal modifications have been brought to the BCG_MIN tool, in order to reduce the amount of memory required for graph minimization. The results can be summarized as follows: - Let m and n be the respective numbers of transitions and states in the graph to be minimized, and - Let b be the number of "blocks" in the minimized graph (note that b <= n) - For "normal" LTSs and strong bisimulation: the number of bytes needed by BCG_MIN was reduced from 16m + 24n + 32b down to 16m + 16n + 24b - For "normal" LTSs and branching bisimulation: the number of bytes needed by BCG_MIN was reduced from 16m + 24n + 32b down to max (16m + 16n + 24b, 16m + 20n) - For probabilistic/stochastic LTSs and strong bisimulation: the number of bytes needed by BCG_MIN was reduced from 16m + 32n + 40b down to 16m + 24n + 28b - For probabilistic/stochastic LTSs and branching bisimulation: the number of bytes needed by BCG_MIN was reduced from 16m + 32n + 40b down to max (16m + 24n + 28b, 16m + 28n) Additional changes have been made to increase speed, which make BCG_MIN about 15% faster on some examples. IMPROVEMENT Number: 829 Date: Thu Nov 21 16:21:40 MET 2002 Authors: Hubert Garavel and Damien Bergamini (INRIA/VASY) Files: bin.*/bcg_io, bin.*/libBCG_IO.a, man/*/bcg_io.*, src/eucalyptus/eucalyptus.tcl Nature: A new option ``-etmcc'' has been added to BCG_IO in order to produce the ``.tra'' needed by the Erlangen Twente Markov Chain Checker (ETMCC). This enables the model-checking of performance properties expressed using the Continuous Stochastic Logic (CSL) against a labelled continuous-time Markov chain contained in a BCG graph. In the EUCALYPTUS graphical user-interface, this functionality is now accessible using the "Convert" item in contextual menus. IMPROVEMENT Number: 830 Date: Fri Dec 13 19:14:53 MET 2002 Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: doc/*/Garavel-Lang-02.* Nature: A new publication describing a semantical model (NTIF) to be used in future versions of CADP was added. BUG FIX Number: 831 Date: Tue Jan 28 19:47:56 MET 2003 Report: Ken Turner (Univ. of Stirling, Scotland, UK) Author: Hubert Garavel (INRIA/VASY) Files: src/com/cadp_which Nature: A bug (missing '$' before shell variable WHICH) has been fixed. IMPROVEMENT Number: 832 Date: Tue Jan 28 20:39:46 MET 2003 Report: Ken Turner (Univ. of Stirling, Scotland, UK) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/*, src/com/*, bin.*/bcg_*, bin/libBCG*.a, bin/libbcg*.a Nature: Changes have been undertaken in order to allow the presence of white spaces in file names (mostly needed for Windows, as in "/Program Files", "/Documents and Settings", etc.). This is a heavy task, since almost every CADP binary and shell scripts have to be patched. A first set of changes has been applied, but several tools remain to be patched. IMPROVEMENT Number: 833 Date: Thu Jan 30 18:42:49 MET 2003 Authors Holger Hermanns (Univ. Sarrebruck, Germany), Christophe Joubert (INRIA/VASY), and Radu Mateescu (INRIA/VASY) Files: doc/*/Hermanns-Joubert-03.*, doc/*/Mateescu-03-a.* Nature: Two new papers have been added: - The first one presents the forthcoming tools BCG_STEADY, BCG_TRANSIENT, and DETERMINATOR for performance evaluation. - The second one presents the CAESAR_SOLVE library for efficient resolution of boolean equation systems. IMPROVEMENT Number: 834 Date: Fri Feb 14 18:20:11 MET 2003 Report: Volker Braun (Univ. Dortmund, Germany), Lars-Ake Fredlung (SICS, Sweden), Jan Friso Groote (Tech. Univ. Eindhoven, The Netherlands), and Ken Turner (Univ. of Stirling, Scotland, UK) Author: Hubert Garavel (INRIA/VASY) Files: com/rfl, INSTALLATION_3 Nature: The RFL command was enhanced so as to support other remote access protocols than rsh/rcp. From now on, ssh/scp and Kerberos' krsh/kcp are also supported. Also, the explanations given in INSTALLATION_3 have been improved. BUG FIX Number: 835 Date: Tue Mar 11 11:04:06 MET 2003 Author: Hubert Garavel (INRIA/VASY) Files: incl/caesar_hash.h, man/*/caesar_hash.*, doc/*/Garavel-92-a.* Nature: Hash functions CAESAR_1_HASH(), CAESAR_2_HASH(), and CAESAR_3_HASH() were improperly defined. The correct definition is CAESAR_i_HASH (CAESAR_S, CAESAR_HASH_SIZE_STATE(), CAESAR_MODULUS) instead of: CAESAR_i_HASH (CAESAR_S, CAESAR_SIZE_STATE(), CAESAR_MODULUS) IMPROVEMENT Number: 836 Date: Wed Mar 12 14:20:54 MET 2003 Authors: Frederic Lang and Hubert Garavel (INRIA/VASY) Files: demos/* Nature: Demos 03, 04, 07, 08, 16, and 24 have been equipped with SVL scripts. The corresponding =READ_ME.txt files have been simplified and most of their contents was transferred to the newly created ".svl" files. Also, for most demo examples, the existing ".svl" file was renamed into "demo.svl". IMPROVEMENT Number: 837 Date: Wed Mar 12 16:12:51 MET 2003 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar.adt, incl/X_NATURAL.h Nature: The C code generated by CAESAR.ADT was made more portable: - on Unix, it now uses the native raise() function, instead of defining raise() as an alias for kill (getpid()). The same modification was made in file incl/X_NATURAL.h. - <stdlib.h> is now included to get the declaration of exit(). IMPROVEMENT Number: 838 Date: Wed Mar 12 18:32:11 MET 2003 Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: bin.*/caesar Nature: The state vector generated by CAESAR is now sorted: fields are permuted using a heuristic that tends to minimize unused "padding" bits, which are introduced by the C compiler in order to align fields on byte/word boundaries properly. This permutation is similar to the one performed by CAESAR.ADT on fields of generated structure/union C types. It is transparent to the end-user. On randomly generated state vectors, the average reduction in state vector size is 20%. However, on the database of real LOTOS examples used for regression testing of CAESAR, the gain appears to be more limited (1.3%). IMPROVEMENT Number: 839 Date: Thu Mar 13 10:20:51 MET 2003 Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard, man/*/svl.*, demos/demo_01/*.svl, demos/demo_02/*.svl, demos/demo_10/*.svl, demos/demo_11/*.svl, demos/demo_24/*.svl Nature: The choice of the default tool called by SVL to minimize an "explicit", "normal" LTS has been simplified: - If the reduction relation is strong or branching equivalence, then SVL invokes BCG_MIN; - Otherwise, if the reduction relation is observational, safety, or tau*.a, then SVL invokes ALDEBARAN. The SVL script files for demos 01, 02, 10, 11, and 24 have been simplified accordingly. BUG FIX Number: 840 Date: Mon Mar 17 13:17:56 MET 2003 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: src/com/cadp_edit Nature: The "cadp_edit" shell-script was modified to avoid a Windows- specific problem (files whose name starts with a "/" can not be opened using "wordpad.exe" or "write.exe"). Because of this problem, the "Help" button of INSTALLATOR would not open the help file (on Windows) and the "Edit .rhosts" button of INSTALLATOR would open an empty file (still on Windows). IMPROVEMENT Number: 841 Date: Mon Mar 17 15:53:32 MET 2003 Authors: Damien Bergamini, Hubert Garavel, and Bruno Ondet (INRIA/VASY) Files: bin.*/libcaesar.a, incl/caesar_hash.h, man/*/caesar_hash.*, doc/*/Garavel-92-a.* Nature: New hash functions named CAESAR_4_HASH(), CAESAR_5_HASH(), and CAESAR_6_HASH() --- together with their corresponding functions CAESAR_STATE_4_HASH(), CAESAR_STATE_5_HASH(), and CAESAR_STATE_6_HASH() --- have been added to OPEN/CAESAR's "caesar_hash" library. BUG FIX Number: 842 Date: Tue Mar 18 13:14:17 MET 2003 Report: Frederic Tronel (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard, bin.*/svl_kernel Nature: When run with the "-debug" option, an SVL script performing abstractions in a "for" loop could re-use a ".sync" file that was automatically generated in a previous iteration, instead of re-generating it. This was incorrect if the interface file changed between successive iterations of the loop. This problem was solved. IMPROVEMENT Number: 843 Date: Wed Apr 2 16:54:06 MEST 2003 Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, incl/caesar_kernel.h Nature: The "caesar_kernel.h" file containing the EXEC/CAESAR API and the C code generated by CAESAR with option "-exec" have been modified: - From now on, base types (such as CAESAR_TYPE_BOOLEAN, CAESAR_TYPE_NATURAL, ...) are defined in "caesar_exec.h" rather than in the C code generated by CAESAR with option "-exec". This increases the compatibility between EXEC/ and OPEN/CAESAR. - The "caesar_kernel.h" API now provides a function (actually, a macro-definition) CAESAR_KERNEL_CURRENT_TRANSITION() that gives the number of the last (visible or tau, but not epsilon) transition fired in the Petri net generated by CAESAR. This new functionality can be useful for measuring the coverage of the Petri net transitions during execution. It is only available when the C code generated by CAESAR with option "-exec" is compiled with C compiler option "-DCAESAR_KERNEL_TRANSITION_INFORMATION" (or if a directive #define CAESAR_KERNEL_TRANSITION_INFORMATION occurs before including "caesar_kernel.h" and the C code generated by CAESAR). IMPROVEMENT Number: 844 Date: Fri Apr 4 13:14:01 MEST 2003 Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar Nature: The C code generated during the simulation phase of CAESAR was improved in two ways: - Each sequence of successive assignments of the form P->CAESAR_PASS[I] |= A1; ... P->CAESAR_PASS[I] |= An; was replaced with one unique assignment of the form: P->CAESAR_PASS[I] |= (A1 | ... | An); This reduction in the size of the generated C code applies to all options ("-aldebaran", "-bcg", "-exec", or "-open") - For option "-exec", another optimization was added, which avoids recomputing the table of positions and the list of firable transitions when function CAESAR_KERNEL_NEXT() is called twice (or more) on the same current state (for details, see occurrences of variable CAESAR_SAME_STATE in the generated C code). On the "ILU-medium" and "ILU-large" benchmarks given to us by BULL, this optimization improves by 17% the speed of the C code generated by CAESAR. BUG FIX Number: 845 Date: Tue Apr 15 15:22:56 MEST 2003 Report: Yehong Xing (BULL) Authors: David Champelovier, Frederic Lang, and Hubert Garavel (INRIA/ VASY) Files: bin.*/caesar, bin.*/caesar.adt, bin.*/caesar.indent Nature: Some error messages emitted by CAESAR and CAESAR.ADT were incorrect: when a syntactic error occurred in a LOTOS file included using the "library ... endlib" directive, the error message indicated an incorrect filename, e.g., [PRR:47] Warning : ``)'' is deleted instead of [ERR:47] Warning : ``)'' is deleted if the syntactic error was at line 47 of file ERR.lib. This problem only occurred after the SYNTAX compiler generator attempted to repair the syntactic error using its global recovery scheme. This was due to a memory allocation error in the SYNTAX library, which was fixed. BUG FIX Number: 846 Date: Wed Apr 16 10:12:24 MEST 2003 Report: Ghassan Chehaibar (BULL) and Radu Mateescu (INRIA/VASY) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.adt Nature: For some syntactically incorrect LOTOS programs, CAESAR and CAESAR.ADT could make a core dump. This problem was due to the syntax recovery feature of SYNTAX, which can insert "fictive" tokens where actual tokens are missing. The problem was solved. BUG FIX Number: 847 Date: Thu Apr 17 14:45:47 MEST 2003 Report: Bruno Vivien (INRIA/VASY) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: bin.*/caesar.adt Nature: For some semantically incorrect LOTOS programs containing a value expression enclosed between parentheses, e.g., eqns ofsort Bool true = ( 0 ); CAESAR.ADT could make a core dump (while CAESAR would report the error correctly). This problem was solved. IMPROVEMENT Number: 848 Date: Fri May 9 15:46:46 MEST 2003 Report: Yehong Xing (BULL) Author: Hubert Garavel (INRIA/VASY) Files: lib/NATURAL.lib, lib/X_NATURAL.lib, demos/demo_12/maa.lotos, demos/demo_16/BRP.lib Nature: The Natural data type library included in CADP was enhanced. Previously, this library was a replacement to the standard NaturalNumber library provided by the LOTOS definition. The compatibility between the Natural and NaturalNumber libraries was improved in the sense that Natural is now an extension (or enrichment) of NaturalNumber: by importing the enhanced version of Natural, one also imports the standard NaturalNumber and BasicNaturalNumber libraries in a totally standard manner. A similar change was brought to the X_Natural library, which establishes a missing symmetry between Natural and X_Natural, the latter being nothing but the external implementation of the former. This is done by splitting the X_Natural library into three types (BasicNaturalNumber, NaturalNumber, and Natural). However, the latter change might create problems in existing LOTOS programs. To address this issue, you should first locate all files with either ".lotos" or ".lib" extension that import the X_Natural library. This can be done by typing the following shell command: find / -name "*.lotos" -o -name "*.lib" -exec \ grep -i '\<X_NATURAL\>' \{\} /dev/null \; | tee _xnatural Then, for each file F listed in "_xnatural", you should try to compile F using CAESAR.ADT (if F is a ".lib" file, then you should try to compile a ".lotos" file that imports F). If compilation succeeds, no change must be done. If compilation fails, then you should replace, in file F (and in all LOTOS files dependent on F) lines of the form type T is ... NaturalNumber ... by type T is ... Natural ... if type T makes use of the data type operations defined in type Natural and not in type NaturalNumber (these operations are the following: 1, 2, 3, ..., 9, -, div, mod, ==, <>, <, <=, >, >=, gcm, and scm). Given that LOTOS is not case- sensitive, the change may consist in replacing type T is ... NATURALNUMBER ... by type T is ... NATURAL ... The demos 12 and 16 of CADP have been updated accordingly. BUG FIX Number: 849 Date: Thu May 15 17:28:14 MEST 2003 Report: Nicolas Descoubes (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: src/installator/bin.win32/blat.exe Nature: For recent versions of Cygwin, INSTALLATOR would fail to send the license file by e-mail, because the "x" (eXecute) bit was not set on the "blat.exe" file. This was fixed. BUG FIX Number: 850 Date: Wed May 21 20:05:14 MEST 2003 Report: Marc Boyer (ENSEEIHT, Toulouse, France), Luka Hejtmanek (Masaryk University, Brno, Czech Republic), Jean-Christophe Pince (M3 Systems, Lavernose, France), and Maciej Szreter (IPIPAN, Warsaw, Poland) Authors: Hubert Garavel and Nicolas Descoubes (INRIA/VASY) Files: bin.iX86/* Nature: On recent versions of Linux (such as RedHat 9.0 and Mandrake 9.1) the CADP binary tools would not execute properly (they would abort with a segmentation fault signal). This problem was solved by recompiling all CADP binaries. IMPROVEMENT Number: 851 Date: Mon May 26 13:13:52 MEST 2003 Author: Radu Mateescu (INRIA/VASY) Files: doc/*/Mateescu-03-c.*, doc/=README.txt Nature: A new publication about the CAESAR_SOLVE library was added to the "doc" directory. IMPROVEMENT Number: 852 Date: Mon May 26 16:32:42 MEST 2003 Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: demos/demo_12/maa.lotos, demos/demo_12/maa.f Nature: The REVERSE function of the MAA protocol is now implemented directly in C (in the "maa.f" file). Previously, it was specified in LOTOS. This simple change allows significant memory savings (see the "=READ_ME.txt" file). BUG FIX Number: 853 Date: Mon Jun 2 18:18:42 MEST 2003 Author: Nicolas Descoubes (INRIA/VASY) Files: src/monitor/main.tcl Nature: A minor problem was fixed in the MONITOR tool: during the generation of a large BCG graph, if the MONITOR window was hidden by another window and then brought to the front ground, the MONITOR window could remain frozen (i.e., grey) during a few seconds until the window was refreshed. This problem is now solved. IMPROVEMENT Number: 854 Date: Thu Jun 5 14:48:55 MEST 2003 Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar Nature: Further changes have been brought to CAESAR so as to generate faster C code for firing transition: - The CAESAR_PASS data structure becomes an array of 32-bits words instead of an array of bytes. On the ILU-medium example of BULL, this makes EXEC/CAESAR 5.8% faster. - When computing successor states, we delay as much as possible the backup of the current state and the computation of the successor marking, until it is certain that the transition will be fireable. This avoids useless computations in the case the transition would not be fireable, either because a "when"-guard evaluates to false, or because the environment refuses the rendezvous (the latter case only applies to EXEC/CAESAR). On the ILU-medium example of BULL, this improves speed by 24% on Linux and 36% on Solaris. - By considering, in EXEC/CAESAR mode, whether each variable used as input in a rendezvous is a bit field or not, it becomes possible to delay even more computations until it is certain that the transition will be fireable. All these changes (combined to those mentioned in item #844 above) lead to significant speed improvement (42% for the ILU-medium example on Solaris). IMPROVEMENT Number: 855 Date: Mon Jun 16 18:59:42 MEST 2003 Report: Solofo Ramangalahy (BULL) Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, incl/caesar_kernel.h Nature: The EXEC/CAESAR API was enhanced with new primitives that provide a finer access to the underlying Petri net model (see the "caesar_kernel.h" file). A first group of primitives provides statistical information about the number of Petri net transitions and the repartition of these transitions as epsilon, visible, and tau transitions: CAESAR_KERNEL_NB_TRANSITIONS() CAESAR_KERNEL_NO_TRANSITION() CAESAR_KERNEL_EPSILON_TRANSITION_MIN_NUMBER() CAESAR_KERNEL_EPSILON_TRANSITION_MAX_NUMBER() CAESAR_KERNEL_VISIBLE_TRANSITION_MIN_NUMBER() CAESAR_KERNEL_VISIBLE_TRANSITION_MAX_NUMBER() CAESAR_KERNEL_TAU_TRANSITION_MIN_NUMBER() CAESAR_KERNEL_TAU_TRANSITION_MAX_NUMBER() A second group of primitives gives transition properties, namely: CAESAR_KERNEL_CURRENT_TRANSITION() (see item #843 above) CAESAR_KERNEL_TRANSITION_GATE() which return the number and gate, respectively, of the last transition fired. In particular, the former function allows, in association with primitives of the first group above, to measure the coverage by counting the number of visible transitions fired. A third group of primitives allows to introduce randomness in the firing of tau transitions. The user can now provide a CAESAR_KERNEL_TAU() function (presumably based on random number generation) that is called every time a tau transition T is fireable: T will be fired iff CAESAR_KERNEL_TAU() returns true. By default, function CAESAR_KERNEL_TAU() always returns true, which expresses the default behaviour of EXEC/CAESAR, in which the first fireable tau transition is always selected. IMPROVEMENT Number: 856 Date: Tue Jun 17 15:23:56 MEST 2003 Author: Hubert Garavel (INRIA/VASY) Files: games Nature: Following a remark from one user, the "games" directory was removed from the CADP distribution. IMPROVEMENT Number: 857 Date: Thu Jun 19 16:55:48 MEST 2003 Author: Hubert Garavel (INRIA/VASY) Files: bin.*/caesar Nature: The C code generated by CAESAR (using "-exec" option) for function CAESAR_KERNEL_INIT() was improved to discover automatically (at run-time) if the user has modified the ".h" or ".t" file AFTER generating the ".c" file. This avoids the two following situations in which the ".c" file is no longer up to date after the modification of the ".h" or ".t" file: - Some sort S originally not defined as a bit field is now a bit field; in such case, the ".c" file is incorrect, as it takes the address ("&") of a bit field, and the user will receive an error message while compiling the ".c" file. - Some sort S originally defined as a bit field is no longer a bit field; in such case, the ".c" file is no longer optimal and the user will receive a warning when the C code executes; this warning indicates that the ".c" file must be regenerated. IMPROVEMENT Number: 858 Date: Fri Jun 20 17:42:16 MEST 2003 Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.adt Nature: Two limitations of CAESAR and CAESAR.ADT have been lifted: - The number of ".lib" files that can be included in a LOTOS program was increased from 128 to 255. - The number of "significant" characters that are allowed in C identifiers was increased from 32 to 48 (one should keep in mind, however, that the ANSI C standard only permits 6 significant characters for external identifiers, because of some obsolete link editors). IMPROVEMENT Number: 859 Date: Fri Jun 20 19:29:14 MEST 2003 Report: Jack Abily (BULL) Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar.adt Nature: The ".h" file produced by CAESAR.ADT has been enhanced so as to allow this file to be included in several C files (i.e., for separate compilation purpose). This is done by using a new macro CAESAR_ADT_INTERFACE that, if defined, will skip variable definitions, function definitions, as well as the inclusion of the ".f" file (since the ".f" file is supposed to contain user-defined functions, which are not guaranteed to be properly bracketed by CAESAR_ADT_INTERFACE). To use the ".h" file as a simple interface, one should either compile with the flag -DCAESAR_ADT_INTERFACE, or define the CAESAR_ADT_INTERFACE macro before including the ".h" file: #define CAESAR_ADT_INTERFACE #include "xxx.h" BUG FIX Number: 860 Date: Mon Jun 23 19:23:12 MEST 2003 Report: Knut Conrad (Humboldt University, Berlin, Germany) Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar Nature: A bug was fixed in optimisation E2. This optimization was too "aggressive" and could in some rare cases (0.13% of our entire non-regression data base) remove some places that were needed to preserve the flow of data, leading to an incorrect LTS (actually, an LTS smaller than needed, in which some states were missing and some transitions were cut). The bug was fixed by strengthening the preconditions for application of optimization E2. IMPROVEMENT Number: 861 Date: Wed Jun 25 18:43:36 MEST 2003 Report: Solofo Ramangalahy (BULL) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/caesar Nature: The C code generated by CAESAR no longer declares useless variables (those named CAESAR_REGISTER_xxx). On the one hand, this avoids compiler warnings (e.g. when compiling with "gcc -Wall"). On the other hand, this reduces the stack size needed for firing transitions. BUG FIX Number: 862 Date: Thu Jul 10 15:09:48 MEST 2003 Report: Nicolas Descoubes (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: man/*/caesar_*.* Nature: In the OPEN/CAESAR manuals, whatever their format (".html", ".l", ".ps", or ".pdf"), there was an error in the text notes regarding the various functions named "CAESAR_CREATE_*". Instead of: CAESAR_CREATE_TABLE_1 (CAESAR_T, ...) the correct text should have been: CAESAR_CREATE_TABLE_1 (&CAESAR_T, ...) This error (caused by a mistake in the translator used by VASY to generate manual pages automatically) has been fixed. BUG FIX Number: 863 Date: Mon Jul 21 17:48:21 MEST 2003 Report: Gregory Lestiennes (Universite Paris Sud, Orsay, France) and Ken Turner (Univ. of Stirling, Scotland, UK) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/tst, INSTALLATION_4, src/com/install_uncompress, src/com/cadp_postscript Nature: On recent Linux and Cygwin distributions, the "compress" and "uncompress" commands are no longer available by default. This caused a problem for several CADP tools that relied on the presence of "uncompress". For instance, INSTALLATOR would stop with the following error messages: Extracting files from archive CADP_iX86_...tar.Z Error while decompressing .../install_uncompress: ...: uncompress: command not found These tools and the installation directives have been updated so as to use "gzip -d" instead of "uncompress" on iX86 and win32 architectures. IMPROVEMENT Number: 864 Date: Fri Sep 12 18:49:17 MEST 2003 Authors: Hubert Garavel, Frederic Lang, Gordon Pace, and Radu Mateescu (INRIA/VASY) Files: doc/*/Garavel-03.*, doc/*/Pace-Lang-Mateescu-03.* Nature: Two new publications have been added in the "doc" directory. IMPROVEMENT Number: 865 Date: Thu Sep 18 16:21:26 MEST 2003 Report: Nicolas Descoubes (INRIA/VASY) Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/libbcg_info.a Nature: The BCG_INFO tool was modified in order to improve its performance when handling very large graphs: - The algorithm used for option "-nondeterministic" was improved. From now on, this algorithm opens BCG files in mode 0 instead of mode 1 (see "man bcg_read"). - When BCG_INFO is called without option, it no longer displays unreachable states (since this would require to open the BCG file in mode 1). As a consequence, BCG_INFO is now much faster. For instance, on the cwi_33949_165318 example of the VLTS benchmark suite (33 million states and 165 million transitions), BCG_INFO now answers in 5 minutes, compared to several hours (or even segmentation faults) with the previous version. BUG FIX Number: 866 Date: Thu Sep 18 17:46:13 MEST 2003 Report: Ken Turner (University of Stirling, Scotland, UK) Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar.adt Nature: LOTOS allows to define operation identifiers containing special characters such as "+", "-", "/", "--", etc. The C code generated by CAESAR.ADT for LOTOS identifiers containing the characters "\" and/or "%" was incorrect, as these characters have a special meaning in C (they provide an escape mechanism in C strings and printf() format strings). This bug was fixed. IMPROVEMENT Number: 867 Date: Tue Sep 23 18:57:40 MEST 2003 Authors: Hubert Garavel and Damien Bergamini (INRIA/VASY) Files: com/bcg_info, bin.*/libbcg_info.a, man/*/bcg_info.* Nature: A new option "-order" was added to BCG_INFO. The purpose of this option is described in the "bcg_info" manual page. BUG FIX Number: 868 Date: Wed Oct 1 17:13:49 MEST 2003 Report: Tomas Barros (INRIA/OASIS, Sophia-Antipolis, France) Author: Radu Mateescu (INRIA/VASY) Files: bin.*/evaluator.a Nature: A bug was fixed in the EVALUATOR model-checker, which generated an incorrect error message when the tool was invoked on a BCG graph whose initial state number was different from zero. IMPROVEMENT Number: 869 Date: Fri Oct 3 13:04:09 MEST 2003 Authors Frederic Tronel, Frederic Lang, Hubert Garavel and David Champelovier (INRIA/VASY) Files: bin.*/bcg_graph, man/*/bcg_graph.* Nature: A new tool, named BCG_GRAPH, was added to the CADP package. This tool generates several useful kinds of automata such as bugs, FIFO queus, chaos automata. IMPROVEMENT Number: 870 Date: Mon Oct 6 12:53:33 MEST 2003 Report: Hubert Garavel (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard, man/*/svl.* Nature: The syntax of SVL has been extended in two ways: - The "reduction" operator of SVL and the meta-operators related to it have been enhanced with new attributes for dealing with the stochastic and probabilistic bisimulations implemented in BCG_MIN; one can now use the following SVL clauses: strong stochastic reduction ... branching stochastic reduction ... strong probabilistic reduction ... branching probabilistic reduction ... - New SVL behavioural operators ("bag", "chaos", "fifo", ...) have been introduced to take advantage of the facilities provided by the new BCG_GRAPH tool. IMPROVEMENT Number: 871 Date: Thu Oct 16 16:14:07 MES 2003 Report: Radu Mateescu (INRIA/VASY) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: bin.*/libbcg_open.a Nature: The implementation provided by BCG_OPEN for the two functions CAESAR_PRINT_LABEL() and CAESAR_STRING_LABEL() defined in the OPEN/CAESAR API has been made faster. For instance, on the alternating bit protocol of demo_02 with 50 messages, the following command: bcg_open bitalt_protocol.bcg generator result.bcg is now 4 times faster. IMPROVEMENT Number: 872 Date: Thu Oct 16 17:25:46 MEST 2003 Report: Nicolas Descoubes (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/libBCG.a, man/*/bcg.* Nature: The default values for the compression parameters of the BCG format (i.e., the default values for the three BCG general options "register", "-short", and "-medium", which are grouped altogether by the "-size" option) have been adapted. The previous default values (2, 2, 4) defined in 1993 were no longer optimal for the larger BCG models that can be generated in 2003. The new default values have been set to (4, 1, 3) after exhaustive experiments done on the VLTS benchmark suite. In practice, for the various BCG graphs that can be generated from the CADP demos, one observes an average reduction of 11% in the size of BCG files. For large graphs (more than 10^5 transitions), the average reduction is 11.9%. For small graphs (less than 10^5 reduction), the file sizes slightly increases (by 3,9%), but this is negligible as the files are small. IMPROVEMENT Number: 873 Date: Tue Oct 21 14:54:03 MEST 2003 Report: Hubert Garavel (INRIA/VASY) Author: Nicolas Descoubes (INRIA/VASY) Files: bin.*/libbcg_draw.a Nature: The PostScript files generated by BCG_DRAW have been enhanced with a directive: %%Page: 1 1 so as to avoid the following warning from the Gsview software running on Windows: DSC error %%Pages: doesn't match the number of %%Page IMPROVEMENT Number: 874 Date: Thu Oct 23 18:05:41 MEST 2003 Report: Marius Minea (Institute e-Austria, Timisoara, Romania) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/tst Nature: The "tst" command (self-testing command of CADP) was enhanced in several ways: - "tst" now displays the version number of the "gcc" compiler, and the version number of the "glibc" library (on Linux). - "tst" now detects the case where $CADP is not set to an absolute pathname (i.e., does not start with a "/"). - "tst" now detects the case where $CADP is set to a Windows pathname (e.g., "C:\..."). - "tst" now detects the case where $CADP is set to a pathname ending with a trailing "/", which causes "tst" to emit incorrect warning messages of the form: *** The tool ``...'' is not searched in ``$CADP/bin.iX86'' but in ``/.../bin.iX86'' instead You might have two versions of CADP installed ==> Reorder your ``$PATH'' variable to have ... and remove all obsolete versions of CADP, if any as the "tst" script is unable to figure out that "//" and "/" are in fact equivalent. IMPROVEMENT Number: 875 Date: Fri Oct 24 12:55:34 MEST 2003 Report: Alban Catry, Radu Mateescu and Nicolas Descoubes (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: doc/*/Garavel-92-a.*, man/*/caesar_*.* Nature: The OPEN/CAESAR manual pages (especially the "caesar_graph", "caesar_edge", and "caesar_table_1" pages) have been improved. In addition to English language corrections, several notes have been added. In particular, it is now said explicitly that functions CAESAR_COPY_STATE(), CAESAR_COPY_LABEL(), and CAESAR_START_STATE() do not allocate memory for their second parameter. IMPROVEMENT Number: 876 Date: Mon Oct 27 17:08:09 MET 2003 Authors: Hubert Garavel and Damien Bergamini (INRIA/VASY) Files: bin.*/caesar Nature: The CAESAR compiler was modified so as to minimize the memory size used by transition labels under their binary form (this size is the result returned by the CAESAR_SIZE_LABEL() function of the OPEN/CAESAR API). Three technical approaches have been implemented: - CAESAR now uses bitfield information when generating the definition of the binary label type. - CAESAR now permutes the fields of the binary label type (i.e., the fields corresponding to LOTOS experiment offers) in the same way as it permutes the state vector fields. - The field containing the Petri net transition number inside the binary label type was made more compact by introducing a dedicated number type CAESAR_TYPE_PACKED_TRANSITION_NUMBER. In practice, on the entire non-regression testing base of CADP, these changes reduced the size of binary labels by 45%. IMPROVEMENT Number: 877 Date: Wed Oct 29 10:59:58 MET 2003 Authors: Hubert Garavel and Damien Bergamini (INRIA/VASY) Files: bin.*/caesar Nature: The implementation generated by CAESAR (with option "-open") for the CAESAR_HASH_LABEL_SIZE() function of the OPEN/CAESAR API was made more accurate. In many cases, this function now returns a greater value than previously. This, combined with the average label size reduction (see item #876 above), improves the quality of hashing on binary labels by increasing the relative percentage of binary label representation on which user-defined hashing functions can operate. Reminder: before any LTS processing, one should not forget to invoke the CAESAR_INIT_GRAPH() function of the OPEN/CAESAR API. The former versions of CAESAR used to generate an empty definition for CAESAR_INIT_GRAPH(), so that omitting to invoke this function was harmless when using "caesar.open" (but not "bcg.open", "seq.open", etc.). At present, the definition generated by CAESAR for CAESAR_INIT_GRAPH() is no longer empty and cannot be ommitted, otherwise CAESAR_HASH_LABEL_SIZE() will return an incorrect value. IMPROVEMENT Number: 878 Date: Mon Nov 17 15:17:12 MET 2003 Report: Katsumi Wasaki (Shinshu University, Nagano, Japan), and Carlos Eduardo Araujo Vieira (University of Ceara, Brazil) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: src/com/cadp_cc, src/com/windows/gcc-crtdll-specs-3.3 Nature: The win32 version of CADP was adapted to support the Gcc 3.3 compiler included in the latest versions of Cygwin. This suppresses various error messages of the form: gcc: installation problem, cannot exec `cpp0': No such file or directory <command line>:20:13: warning: "system" re-asserted <command line>:22:1: warning: "__STDC_HOSTED__" redefined <command line>:1:1: warning: "__STDC__" redefined <command line>:23:9: warning: "cpu" re-asserted <command line>:24:13: warning: "machine" re-asserted /lib/mingw/crt1.o(...):crt1.c: undefined reference to `__p__fmode' etc. IMPROVEMENT Number: 879 Date: Mon Nov 17 15:57:10 MET 2003 Report: Ken Turner (University of Stirling, Scotland, UK) Author: Hubert Garavel (INRIA/VASY) Files: com/tst, src/com/cadp_which, cadp_cygwin.com Nature: The "tst" command was enhanced to compare, on win32, both files "/bin/sh.exe" and "/bin/bash.exe", and if different, to warn the user that the shell-script "cadp_cygwin.com" should be executed. The "cadp_which" command was modified on win32 so as to function properly even when the "cadp_cygwin.com" shell- script has not been applied properly. The "cadp_cygwin.com" shell-script was modified in several ways: - Obsolete features related to old features of Cygwin have been removed. - Version 1.5.5 of Cygwin is now supported. - It is now possible to execute "cadp_cygwin.com" several times, e.g., after each upgrade of Cygwin. IMPROVEMENT Number: 880 Date: Tue Nov 18 10:20:32 MET 2003 Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar Nature: In the C code generated by CAESAR with "-open" option, the array CAESAR_UNIQUE_GATE[] was removed and replaced with a new array named CAESAR_UNIQUE_GATE_AND_PROFILE[]. Then, the C code generated for functions CAESAR_COMPARE_LABEL() and CAESAR_HASH_LABEL() has been revised, with two main advantages: - The CAESAR_COMPARE_LABEL() function becomes faster. - The CAESAR_HASH_LABEL() function becomes faster and gives a better hash dispersion: the previous hash function only considered the gate and the profile of a label, thus giving the same hash value for labels with the same gate and profile, but different experiment offers; the new hash function reduces the risk of collisions by hashing also on all experiment offers of canonical type (i.e., of any type but a pointer type). In the alternating bit protocol of demo_02 with 100 messages, the number of hash collisions for all reachable labels was reduced from 101 to 0. In the bounded retransmission protocol of demo_16 with 10 messages, the number of hash collisions for all reachable labels was reduced from 48 to 10 (only conflicts for non- canonical sorts remain). On the entire list of full-LOTOS programs used for regression testing of CAESAR, the average number of hash collisions for labels was divided by 3.9 on Solaris and divided by 2.5 on Linux. IMPROVEMENT Number: 881 Date: Thu Nov 20 09:35:16 MET 2003 Report: Katsumi Wasaki (Shinshu University, Nagano, Japan) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/tst Nature: The "tst" command was improved in two ways: - On Windows, it now detects and report the case where Cygwin is not installed in C:\ but in a sub-directory, such as C:\cygwin. - On Linux, it now detects and reports obsolete versions of the Glibc library (i.e., versions strictly older than Glibc 2.3) and warns about potential 'undefined symbols' problems. IMPROVEMENT Number: 882 Date: Thu Nov 20 12:33:53 MET 2003 Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.adt Nature: In the front-end part of the CAESAR and CAESAR.ADT compilers for LOTOS specifications, the static semantics analysis phase has changed slightly. From now on, binding of process identifiers is done before binding of gate identifiers. For the user, the effect is the same, except for incorrect LOTOS specifications that contain both erroneous process and gate identifiers; for such specifications, CAESAR and CAESAR.ADT will stop just after displaying error messages related to processes (previously, error messages related to gates were displayed first). IMPROVEMENT Number: 883 Date: Mon Nov 24 17:09:52 MET 2003 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: src/com/cadp_windows, com/tst Nature: A new shell-script named "cadp_windows" was added. This shell- script is used to adapt the Windows distribution of CADP. Specifically, "cadp_windows": - removes symbolic links in the $CADP directory (symbolic links are a Cygwin-specific extension and are not handled by pure Win32 applications, such as CADP binary programs), - modifies text files by expanding tabulations and converts "\n" into "\r\n", so that text files can be read by simple Windows editors such as Notepad. The "tst" command has also been adapted. On Windows, it now detects the existence of symbolic links in the $CADP directory and, in such case, suggests to execute the "cadp_windows" shell-script. IMPROVEMENT Number: 884 Date: Tue Nov 25 14:38:08 MET 2003 Authors: Hubert Garavel and Damien Bergamini (INRIA/VASY) Files: bin.*/libcaesar.a Nature: The CAESAR_PRINT_TABLE_1() function of the OPEN/CAESAR library now displays more accurate statistics for hash collision lists. IMPROVEMENT Number: 885 Date: Tue Nov 25 16:31:47 MET 2003 Author: Radu Mateescu (INRIA/VASY) Files: src/xtl/ctl.mcl Nature: A new library file for EVALUATOR (description of the CTL logic in modal mu-calculus) was added. BUG FIX Number: 886 Date: Wed Nov 26 11:27:32 MET 2003 Author: Hubert Garavel (INRIA/VASY) Files: com/bcg_edit Nature: The BCG_EDIT tool, when given the "-version" option, would fail with the following message: grep: can't open /incl/bcg_version.h This problem was solved. BUG FIX Number: 887 Date: Mon Dec 1 12:11:47 MET 2003 Report: Frederic Lang (INRIA/VASY) Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: bin.*/libBCG_IO.a Nature: The Linux version of the BCG_IO tool would generate incorrect Fc2 files. Precisely, the command: bcg_io file.bcg file.fc2 would generate in the Fc2 file an extra number at the end of certain labels, which was then rejected by Fc2 tools such as Fc2Link. This bug, which seemed to occur only on Linux, was fixed. IMPROVEMENT Number: 888 Date: Mon Dec 1 17:11:03 MET 2003 Authors: Frederic Tronel, Frederic Lang and Hubert Garavel (INRIA/VASY) Files: doc/*/Tronel-Lang-Garavel-03.*, doc/*/Mateescu-03-b.* Nature: Two new papers have been added in the "doc" directory: the former deals with the compositional verification using CADP of the ScalAgent deployment protocol for software components; the latter is about action-based temporal logics for asynchronous systems. BUG FIX Number: 889 Date: Tue Dec 2 13:10:55 MET 2003 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/bcg_edit, src/com/bcg_edit/bcg_edit.tcl Nature: In the "Help" menu of the BCG_EDIT tool, the "BCG Postscript Format" entry did not work correctly when selected: - On Solaris, nothing happened, - On Windows, a dialog box would open with the message Error: "/Program: not found" These problems were fixed. BUG FIX Number: 890 Date: Wed Dec 3 15:31:21 MEST 2003 Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2fc2 Nature: A bug was fixed in EXP2FC2, which did not translate the "||" operator into the Fc2 format correctly. The reason was that EXP2FC2 required synchronization only on labels present on both sides of the "||" operator (whereas it should synchronize on all labels instead). BUG FIX Number: 891 Date: Thu Dec 11 13:05:45 MET 2003 Report: Nicolas Descoubes (INRIA/VASY) and Solofo Ramangalahy (BULL) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.adt, com/cadp_cc Nature: On Linux and Windows systems with Gcc version 3.*, the CAESAR and CAESAR.ADT compilers performed unecessary recompilations. This problem was fixed. IMPROVEMENT Number: 892 Date: Fri Dec 12 13:51:28 MET 2003 Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.adt Nature: CAESAR.ADT was enhanced with a sort finiteness analysis (fixpoint computation, 250 lines of C code) that classes LOTOS sorts into three categories: - sorts whose value domain is finite, - sorts whose value domain is infinite but bounded by a user-defined iterator, which only enumerates a restricted, finite subset of values, - sorts whose value domain is infinite and not bounded by an iterator. For each sort of the third category, a comment was added in the C code generated by CAESAR.ADT so as to remind the user that it is possible to define an iterator manually for this sort. Then, CAESAR was modified to take advantage of the sort finiteness analysis performed by CAESAR.ADT: CAESAR will now emit a warning if the generated simulator program contains an iteration over the domain of some infinite sort S that lacks an iterator in the ".h" file. This warning is emitted before compiling and executing the simulator program; it has the following form: #185 warning during simulation: foreseeable impossibility to enumerate the domain of some LOTOS sort graph exploration is likely to abort because no iterator exists to enumerate the domain of sort S Later, when executing the simulator program after it is compiled, if the iteration over the domain of S is actually reached, the usual error messages will be displayed: #226 theoretical limitation : domain of an infinite (or complex) sort cannot be enumerated; no available iterator for sort S #203 system error during simulation: termination on SOFTWARE_TERMINATION signal (files completed) quit IMPROVEMENT Number: 893 Date: Tue Dec 16 11:17:27 MET 2003 Author: Hubert Garavel (INRIA/VASY) Files: incl/caesar_standard.h, bin.*/libcaesar.a, man/*/caesar_standard.*, src/open_caesar/generator.c, src/open_caesar/reductor.c, src/open_caesar/executor.c Nature: A new function named CAESAR_SIGNALS() was added to the "caesar_standard" library of OPEN/CAESAR. This function allowed to simplify and shorten the source code of the GENERATOR, REDUCTOR, and EXECUTOR tools. IMPROVEMENT Number: 894 Date: Fri Dec 19 15:57:30 MET 2003 Report: Matts Kindahl (Uppsala University, Sweden) Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, man/*/caesar_graph.* Nature: The C code fragment generated by CAESAR for producing the character string corresponding to a label was improved. This C code fragment is used by the "-bcg" option of CAESAR and by the "-open" option of CAESAR (in order to implement the CAESAR_STRING_LABEL() function of OPEN/CAESAR's "caesar_graph" interface). It is not used by the "-aldebaran" and "-exec" options of CAESAR. This C code fragment, which could be slow, was made faster by implementing a hash-based cache table, which avoids useless recomputations. In the alternating bit protocol of demo_02 with 100 messages, CAESAR with "-bcg" option was made 32% faster after this change. In the bounded retransmission protocol of demo_16 with 10 messages, CAESAR was made 6.5% faster. In the worst case where all labels are different, a small penalty (-4.2%) can be observed though. Similarly, the CAESAR_STRING_LABEL() function, which is used intensively in tools such as GENERATOR and EVALUATOR, was made faster (26% faster for GENERATOR and 2-4 times faster for EVALUATOR). In the worst case, a small penalty (-2%) is also observed. In the manual page for "caesar_graph", the implementation note that warned about the potential inefficiency of function CAESAR_PRINT_LABEL() was removed. IMPROVEMENT Number: 895 Date: Tue Dec 23 17:17:12 MET 2003 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: bin.*/libcaesar.a, man/*/caesar_rename_1.*, doc/*/Garavel-92-a.* Nature: The documentation of the CAESAR_APPLY_RENAME_1() function of the "caesar_rename_1" library was improved: it now specifies that it is forbidden to call CAESAR_APPLY_RENAME_1() by giving to its second argument the value returned by a former call to CAESAR_APPLY_RENAME_1(), as in the following example: CAESAR_APPLY_RENAME_1 (..., CAESAR_APPLY_RENAME_1 (..., ...)) A test was added in the code of CAESAR_APPLY_RENAME_1() so as to detect and reject this situation. IMPROVEMENT Number: 896 Date: Wed Feb 10 16:21:53 MET 2004 Report: Hubert Garavel (INRIA/VASY) Author: David Champelovier (INRIA/VASY) Files: bin.*/mcl_expand, demos/demo_02/*.mcl, demos/demo_29/*.mcl Nature: The formula language of the EVALUATOR 3 model-checker was enhanced with a concatenation operator (noted `#') operating on label strings and regular expressions. Precisely, the syntax of strings was extended with the following rule: <string> ::= ... | <string1> # <string2> and the syntax of regular expressions was extended with the three following rules: <regexp> ::= ... | <regexp1> # <regexp2> | <string1> # <regexp2> | <regexp1> # <string2> This syntactic extension, combined with the use of the MCL_EXPAND preprocessor, allows to define parameterized action predicates. For instance, the "macros.mcl" file of demo_02 now defines two parameterized macros GET (N) and PUT (N) instead of several macros GET_0, GET_1, ..., PUT_0, PUT_1, etc. Similarly, the "macros.mcl" of demo_29 was simplified; it has now only 183 lines instead of 783 lines. IMPROVEMENT Number: 897 Date: Mon Feb 16 14:58:29 MET 2004 Authors: Hubert Garavel and Radu Mateescu (INRIA/VASY) Files: doc/Garavel-Mateescu-04, doc/=READ_ME.txt, doc/biblio.bib Nature: A new publication entitled "SEQ.OPEN: A Tool for Efficient Trace-Based Verification" was added to the CADP release. This paper describes SEQ.OPEN, an OPEN/CAESAR-compliant compiler for the SEQUENCE format. IMPROVEMENT Number: 898 Date: Mon Feb 16 15:04:24 MET 2004 Authors: Gregory Batt, Damien Bergamini, Hidde de Jong, Hubert Garavel, and Radu Mateescu (INRIA) Files: doc/Batt-Bergamini-deJong-et-al-04, doc/=READ_ME.txt, doc/biblio.bib Nature: A new publication entitled "Model Checking Genetic Regulatory Networks using GNA and CADP" was added to the CADP release. This paper describes a connection between the GNA (Genetic Network Analyzer) tool and CADP, which enables the analysis of genetic regulatory networks using standard equivalence checking and model checking techniques. BUG FIX Number: 899 Date: Wed Feb 25 15:03:06 MET 2004 Report: Wendelin Serwe (INRIA/VASY) Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: src/bcg_edit/bcg_edit.tcl Nature: Two bugs were fixed in the BCG_EDIT tool: - In some cases, refresh would not be done and the BCG_EDIT window could remain grey. - Modifying the Postscript Options (e.g., the radius value) would have no effect. IMPROVEMENT Number: 900 Date: Wed Feb 25 17:50:28 MET 2004 Report: Jack Abily and Solofo Ramangalahy (BULL) Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: incl/caesar_kernel.h, bin.*/caesar Nature: The "caesar_kernel.h" file defining the EXEC/CAESAR API was enhanced with new functionalities (some of which borrowed from the OPEN/CAESAR API). Several new primitives have been added: CAESAR_CREATE(), CAESAR_DELETE(), CAESAR_CREATE_STATE(), CAESAR_DELETE_STATE(), CAESAR_SIZE_STATE(), and CAESAR_ALIGNMENT_STATE(). Then, two new primitives, CAESAR_KERNEL_SAVE_STATE() and CAESAR_KERNEL_RESTORE_STATE() have been added to save and restore the current simulation state to/from memory. These functions are useful, e.g., to hardware/software cosimulation. The following code fragment shows how these functions can be used: main () { CAESAR_TYPE_STATE CAESAR_S; CAESAR_KERNEL_INIT (NULL); CAESAR_CREATE_STATE (&CAESAR_S); ... /* saving the current simulation state into CAESAR_S */ CAESAR_KERNEL_SAVE_STATE (CAESAR_S); ... /* advancing the simulation by one step */ CAESAR_KERNEL_NEXT (); ... /* backtracking to saved state CAESAR_S */ CAESAR_KERNEL_RESTORE_STATE (CAESAR_S); ... CAESAR_DELETE_STATE (&CAESAR_S); } The C code generated by CAESAR with "-exec" option was modified so as to implement the new primitives added to the EXEC/CAESAR API. BUG FIX Number: 901 Date: Tue Mar 9 16:47:14 MET 2004 Report: Andrea Martins Araujo (Univ. Federal do Rio de Janeiro, Brasil) Author: Damien Bergamini (INRIA/VASY) Files: src/bcg_edit/bcg_edit.tcl Nature: If a label of BCG GRAPH would contain braces, e.g., as in the following label "GET !1 !true !{}", BCG_EDIT would abort with the following error message: Error in startup script: list element in braces followed by "\))" instead of space ... This problem was solved. BUG FIX Number: 902 Date: Mon Apr 19 21:39:27 MEST 2004 Author: Hubert Garavel (INRIA/VASY) Files: bin.*/libseqopen.a Nature: Two bugs have been fixed in the SEQ.OPEN tool: - On Windows, ``.seq'' files with lines terminated with CR-LF ("\r\n") instead of LF ("\n") were rejected by SEQ.OPEN, unless the "-seqno" option was selected. - The value given to the CAESAR_HINT_HASH_SIZE_LABEL variable is now equal to 0, and not to sizeof (CAESAR_BODY_LABEL). IMPROVEMENT Number: 903 Date: Fri Apr 23 10:50:16 MEST 2004 Report: Axel Belinfante (University of Twente, The Netherlands), Olivier Bonaventure (Universite de Liege, Belgium), Francois Germeau (Universite de Liege, Belgium), Michel Jankowski (Universite de Liege, Belgium), Charles Pecheur (INRIA/VASY), Meurig Sage (University of Glasgow, UK), Frederic Tronel (INRIA, VASY), and many others Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar.adt, bin.*/caesar, bin.*/caesar.indent, lib/*.lib, incl/X_*.h, demos/demo_02/BITALT.t, demos/demo_03/DATALINK.t, demos/demo_05/list.lotos, demos/demo_05/user.c, demos/demo_07/overtaking.lotos, demos/demo_08/REL_REL_FIFO.lib, demos/demo_09/INRES_PROTOCOL.lib demos/demo_09/INRES_SERVICE.lib, demos/demo_10/BITALT.t demos/demo_11/rel_rel.t, demos/demo_11/REL_REL_FIFO.lib, demos/demo_16/BRP.t, demos/demo_16/brp_service.t, demos/demo_16/brp_protocol.t, demos/demo_18/transit_node.t, demos/demo_20/REL_REL_FIFO.lib, demos/demo_20/rel_rel.t, demos/demo_23/*.f, demos/demo_26/*.f, demos/demo_31/TYPES.lib, demos/demo_31/SCSI_A.f, demos/demo_31/SCSI_A.t, demos/demo_31/SCSI_B.f, demos/demo_31/SCSI_C.f Nature: The CAESAR.ADT and CAESAR tools have been modified so as to address two issues: a) The former versions of CAESAR.ADT could generate iterators only for "simple" LOTOS sorts, namely natural numbers, enumerated types (including singleton types), and tuple types (see $CADP/doc/pdf/Garavel-89-c.pdf for details). However, more "complex" types would not be supported, even if their domain of values was finite, such as the following LOTOS sort T with two constructors: A (*! constructor *) : BOOL -> T B (*! constructor *) : BOOL, BOOL -> T For those types, CAESAR.ADT would generate an error message about infinite or too complex types; this error message would appear as soon as CAESAR would try to enumerate the domains of these types. A workaround was to provide, for these types, hand-written iterators defined in the ".t" and/or ".f" files. b) In the particular case of "tuples of tuples" types, the iterators generated by CAESAR.ADT for those types would not work properly: the C compiler would reject them because of name clashes between variables declared in iterators. These two issues are now solved by the recent version 5.2 of CAESAR.ADT, which can now generate iterators for all LOTOS sorts with a finite domain of values. In particular, for the previously so-called "complex" sorts, it is no longer needed to provide ".t" and/or ".f" files containing hand-written C code for enumerating the domain of these sorts. However, this improvement requires important changes in the definition of the iterators generated by CAESAR.ADT. One must now distinguish between two different forms of iterators: - "Old-style" iterators are described in the [Garavel-89-c] paper. In a LOTOS specification, an old-style iterator is specified using a special comment of the form: sort S (*! implementedby S ... enumeratedby ENUM_S ... *) It consists of one single C macro-definition ENUM_S to be used as follows for enumerating all values of sort S: S LOOP_VARIABLE; { ENUM_S (LOOP_VARIABLE) { ... loop body parameterized by LOOP_VARIABLE } } For instance, the old-style iterator for enumerating the integer range 0..15 has the form: #define ENUM(X) for ((X) = 0; X <= 15; ++(X)) - "New-style" iterators are introduced with CAESAR.ADT 5.2. In a LOTOS specification, a new-style iterator is specified using a special comment of the form: sort S (*! implementedby S ... iteratedby FIRST_S and NEXT_S ... *) It consists of two C macro-definitions FIRST_S and NEXT_S with the following profiles FIRST_S() : returns a constant value of sort S NEXT_S(X) : tries to advance X to the next value of S and returns a non-zero value iff there exists such a value To enumerate all values of sort S, a new-style iterator must be used as follows: S LOOP_VARIABLE; LOOP_VARIABLE = FIRST_S(); do { ... loop body parameterized by LOOP_VARIABLE } while (NEXT_S (LOOP_VARIABLE)); For instance, the new-style iterator for enumerating the integer range 0..15 has the form: #define FIRST() 0 #define NEXT(X) ((X)++ < 15) Given that there exist two forms of iterators, which one should be preferred? The rule is simple: From now on, the use of new-style iterators is highly recommended in LOTOS files and in their associated hand-written ".t" and ".f" files. Specifically, any further use of "enumeratedby" clauses in special comments is discouraged; "iteratedby" clauses should be used instead. (Backward compatibility issues will be discussed later below). Consequently, the following changes have been brought to the CADP toolbox: - The CAESAR.ADT compiler was modified to handle special comments of the form "iteratedby ... and ..." and to generate appropriate C code for new-style iterators. The "-map" and "-external" options of CAESAR.ADT have been extended accordingly. - The CAESAR.INDENT pretty-printer was modified to accept special comments of the form "iteratedby ... and ...". - The CAESAR compiler was modified to handle special comments of the form "iteratedby ... and ...". In the generated C code, CAESAR can now invoke new-style iterators instead of old-style ones according to rules detailed below. The "-map" option was also updated. - In all "*.lib" files contained in directory $CADP/lib, special comments of the form "enumeratedby" have been replaced with "iteratedby" ones. - Consequently, in all "X_*.h" files contained in directory $CADP/incl, definitions of old-style iterator macros of the form ADT_ENUM_xxx() have been removed and replaced with corresponding pairs of ADT_ENUM_FIRST_xxx() and ADT_ENUM_NEXT_xxx() macros. - In all demo examples containing iterator macros, the "*.lib", "*.h", "*.f", and "*.t" macros have been updated accordingly. The improvement is particularly evident in the case of demo_23, where all the "*.f" containing old- style iterators (a total of 2,464 lines of C code) have been replaced with equivalent, yet shorter ".t" files (only 111 lines in total) containing new-style iterators. Although we recommend to migrate, as much as possible, to new-style iterators, we implemented specific policies to ensure a maximal backward compatibility for already existing LOTOS programs (together with their associated ".t" and ".f" files) making use of old-style iterators. In some cases however, backward compatibility cannot be ensured, thus leaving migration as the only available option. First, to avoid migration problems, one should carefully erase the ".h" files generated by former versions of CAESAR.ADT and the ".c" files generated by former versions of CAESAR. The backward compatibility rules implemented in CAESAR.ADT and CAESAR are the following: (1) If an "iteratedby" comment is present when a LOTOS sort S is declared, then CAESAR.ADT will generate a new-style iterator for S, and CAESAR will invoke this new-style iterator whenever it is necessary to enumerate all values in the domain of S. (2) If an "enumeratedby" comment is present when a LOTOS sort S is declared, then CAESAR.ADT will generate *both* an old-style iterator and a new-style iterator for S, and CAESAR will invoke the old-style iterator whenever it is necessary to enumerate all values in the domain of S. (3) If neither "iteratedby" nor "enumeratedby" comment is present when a LOTOS sort S is declared, then CAESAR.ADT and CAESAR will consider, by default, that sort S has a new-style iterator, the name of which is unspecified and provided automatically by CAESAR.ADT and CAESAR. Thus, CAESAR.ADT will generate a new-style iterator for S, and CAESAR will invoke this new-style iterator whenever it is necessary to enumerate all values in the domain of S. Note: following rules (1)-(3), a new-style iterator will always be generated, independently of whether an "iteratedby" or "enumeratedby" comment is present or not. Note: in the syntax of special comments attached to LOTOS sorts, it is not allowed to specify simultaneously "enumeratedby" and "iteratedby" for the same LOTOS sort. Note: rule (3) breaks backward compatibility (but only if hand-written old-style iterators are given in the ".t" file or if the old-style iterators generated by CAESAR.ADT are invoked in some hand-written C program). Previously, any LOTOS sort without special comment would be given an old-style iterator by default. From now on, it will be given a new-style iterator by default. In that case, we decided to give priority to new-style iterators instead of old-style ones. In addition to the general rules (1)-(3), the following rules detail how particular cases are handled: (4) In the C code generated by CAESAR.ADT, all iteration macros (either old-style or new-style) are enclosed between #ifdef ... and #endif. This allows users to provide their own iterators by defining their own macros in the ".t" file. Because of #ifdef clauses, the C code generated by CAESAR.ADT will not override the actual macro-definitions provided by the user. (5) The new version of CAESAR.ADT will analyze (during its "type survey" phase) the ".t" file (if present) to determine whether it contains hand-written (old-style or new-style) iterators for the LOTOS sorts. Similarly, the new version of CAESAR does the same with the ".h" file, which can be either generated automatically by CAESAR.ADT or provided by the user. Note: for a new-style operator, the existence test is done by checking the existence of both macros, i.e., #if defined(FIRST) && defined (NEXT) If only one macro is defined (i.e., if FIRST() exists but not NEXT(), or vice versa), a warning will be emitted. (6) Because the tests on iterator existence mentioned in rules (4) and (5) are implemented using #ifdef conditions, the new-style iterators provided by the user must always be defined as C macro-definitions and not as C functions (for old-style iterators, this is always the case). Otherwise, the #ifdef condition would always be false. Thus, the rule will be to define FIRST() and NEXT() as macros, even if they could be also defined as C functions. Anyway, if the C code for new-style iterators is so complex that it must be enclosed in functions, say FIRST_FUNCTION() and NEXT_FUNCTION(), it is always possible (and required) to define FIRST() and NEXT() as wrappers around these functions, i.e., #define FIRST() FIRST_FUNCTION() #define NEXT(X) NEXT_FUNCTION(&(X)) (7) If a LOTOS sort S is specified to be "external" using a special comment of the form "(*! ... external *)", and if CAESAR needs to enumerate the value domain of S, then a ".t" file should be present and should contain an iterator for S. CAESAR.ADT will not generate iterators for external sorts and CAESAR will emit warning/error messages when trying to enumerate the value domain of external sorts without hand-written iterators. (8) As regards hand-written old-style iterators given in the ".t" file: it is strongly recommended to rewrite them into new-style iterators. However, to preserve backward compatibility, CAESAR.ADT will generate macro-definitions in which new-style iterators are derived from old-style ones. These new-style operators provided for backward compatibility are functionally correct but slower: when used to enumerate a domain with N values, they take a quadratic amount of time O(N^2) instead of a linear one O(N). Therefore, migrating towards hand-written new-style iterators is advised. (9) The new version of CAESAR.ADT analyzes the constructors of each LOTOS sort in order to detect whether the value domain of each sort is finite or infinite (this is done by computing fixed points, since an infinite sort is characterized by the existence of recursive constructor definitions). Even if a sort S has an infinite value domain, the user can always define, in the ".t" file, an iterator for S that enumerates only a finite subset of the value domain of S. If such an iterator is present, CAESAR and CAESAR.ADT will consider that sort S, although infinite in theory, is actually bounded. Otherwise, sort S will be considered as "truly" infinite. In any case, CAESAR.ADT will not generate iterators for infinite sorts and CAESAR will emit warning/error messages when trying to enumerate the value domain of external sorts without hand-written iterators. Note: For an external, infinite or "complex" sort S, the previous versions of CAESAR.ADT would generate, in the ".h" file, a "fake" iterator CAESAR_ADT_NO_ITERATOR_S() that would, in turn, invoke a macro CAESAR_ADT_NO_ITERATOR ("S") that would itself trigger an exception (using the raise (15) signal) as soon as the iterator is invoked. This is no longer the case: the new version of CAESAR.ADT generates no iterator at all for such sorts and the CAESAR_ADT_NO_ITERATOR_S() and CAESAR_ADT_NO_ITERATOR() macros are no longer defined. Consequently, the new version of CAESAR no longer tries to invoke such macros: instead, during its "type survey" phase, it checks for the existence of iterators in the ".h" file; if it is required to invoke an interator that does not exist, CAESAR will emit first a warning message, followed by an error message during the simulation phase when the iterator is actually invoked. Note that ".c" files generated by former versions of CAESAR should be erased and regenerated, as they might contain invocations to the CAESAR_ADT_NO_ITERATOR_S() and CAESAR_ADT_NO_ITERATOR() macros. (10) Beyond rules (1)-(3), there are two cases in which the new version of CAESAR.ADT tries to generate an old-style iterator for some LOTOS sort S: - when S is declared with an "enumeratedby" comment, as specified by rule (2) - when S is declared with an "iteratedby" comment or without comment, but appears as a field of a tuple sort S' declared with an "enumeratedby" comment (i.e., S' has a unique constructor with one or several parameters of sort S). The second case intends to provide backward compatibility as much as possible. (11) There are situations in which it is not possible to generate an old-style iterator for some sort S, because of issues a) and b) listed above. This happens when S is finite and S does not have a hand-written iterator given in the ".t" file and - either S is a "complex" sort - or S is a tuple sort, the unique constructor of which has at least one parameter of sort S' such that S' is either a tuple sort, or an external sort declared with an "iteratedby" comment, or a sort declared with an "iteratedby" comment for which a hand-written iterator exists in the ".t" file. In such case, CAESAR.ADT will emit a warning message reporting that the old-style iterator cannot be produced. Note: To summarize the benefits of new-style iterators, the new version of CAESAR.ADT can generate an iterator for any LOTOS sort S that is not declared as external and for which no hand-written iterator is given in the ".t" file and that has a finite value domain. BUG FIX Number: 904 Date: Mon Apr 26 13:25:23 MEST 2004 Report: Bruno Ondet (INRIA/VASY) Author: Nicolas Descoubes (INRIA/VASY) Files: com/tst, com/installator Nature: Two bugs have been fixed in the INSTALLATOR and "tst" tools: both tools would fail if the environment variable $CADP_TMP was set to a non-existent directory, or to a non-writable directory, or to a relative pathname (i.e., not starting with a `/'). From now on, both INSTALLATOR and "tst" will check that $CADP_TMP is set to the absolute pathname of a writable directory and, if not, emit a proper error message. IMPROVEMENT Number: 905 Date: Tue Apr 27 13:02:01 MEST 2004 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/installator, src/installator/installator.tcl Nature: Many improvements have been made to the INSTALLATOR assistant: - INSTALLATOR now handles file and directory name that contain spaces (such as "Program Files", "Documents and Settings", etc.) - A "Retry" button was added when the FTP connection needed to search for the most recent (beta-)version of CADP fails. - A "Show Prototype License File" was added to display the prototype license file before it is sent to the CADP team. - Environment variables $LANG and $LC_ALL are now set to standard values so as to ensure a correct functioning in any country. - The builtin FTP client of INSTALLATOR now opens "passive" connections (instead of "active" ones), which is more compatible with firewall policies that may exist on the side of CADP users. This avoids most "FTP error" messages, but will not bypass strict firewalls (or iptable/ipchains configurations) that disable all FTP downloads. - Two new buttons labelled "Look instead for a stable version" and "Look instead for a beta version" have been added. They allow to switch easily from a stable version to a beta- version and vice-versa. These buttons allow to recover easily from the omission of the "-beta" version. IMPROVEMENT Number: 906 Date: Tue Apr 27 15:42:26 MEST 2004 Report: Wendelin Serwe (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: com/svl, bin.*/svl_kernel, man/*/svl.l Nature: The semantics of "root leaf reduction" and "node reduction" have been modified in order to benefit from the most efficient CADP tools available up to date. For instance, certain invocations of ALDEBARAN for reducing composition expressions have been replaced with invocations of BCG_MIN and GENERATOR. Also, to ease the debugging of SVL scripts, the SVL compiler has been modified to keep the intermediate files present in the current directory when a command called by SVL fails. BUG FIX Number: 907 Date: Tue Apr 27 16:31:48 MEST 2004 Report: Wendelin Serwe (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard Nature: A bug was fixed in SVL. If some label occurring in a hide, rename, or abstraction expression had leading blank characters (inside quotes), these blank characters were ignored, since SVL would remove quotes while creating the rename, hide, or synchronization file. BUG FIX Number: 908 Date: Fri Apr 30 18:49:46 MEST 2004 Authors: Nicolas Descoubes, Hubert Garavel, and Frederic Lang (INRIA/VASY) Files: bin.win32/libBCG.a Nature: Two problems have been solved in the BCG library: - In some cases, under Windows, the BCG tools could emit a warning message of the form: "bcg_dynamic: stat error on the bcg file" This was due to an error in the system function tmpfile(), which we replaced by a correct function. - The value returned by the system function getdtablesize() was increased from 20 to 40, which now allows to open 37 BCG files simultaneously (instead of 17 as before). IMPROVEMENT Number: 909 Date: Tue May 4 14:54:12 MEST 2004 Report: Jaco van de Pol (CWI, Amsterdam, The Netherlands) Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: bin.*/libcaesar.a, doc/*/Garavel-92-a.*, man/*/caesar_hide_1.*, man/*/caesar_rename_1.* Nature: The definition of the "gate mode" used in the OPEN/CAESAR libraries "hide_1" and "rename_1" was slightly extended. Previously, the "gate" extended from the beginning of the label up to the first space or tabulation character; now, it extends up to the first space, tabulation character, `?', `!', or `(' character. This definition is compatible with the conventions used in the LOTOS and muCRL languages, but it may break compatibility with some (hypothetical) langages that would allow the `?', `!', or `(' characters in their gate names. The manual pages for the "hide_1" and "rename_1" libraries have been made more precise, by defining exactly the notion of "the first word of S" IMPROVEMENT Number: 910 Date: Tue May 4 15:17:19 MEST 2004 Report: Nicolas Descoubes (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: incl/caesar_standard.h, incl/bcg_standard.h doc/*/Garavel-92-a.*, man/*/caesar_standard.* Nature: The "caesar_standard.h" include file was modified to ensure compatibility with ISO C: - It no longer includes <malloc.h> (which does not exist on Mac OS X) but includes <stlib.h> instead. The same change was made also to "bcg_standard.h". - Migration from <varargs.h> to <stdargs.h> was achieved. The CAESAR_VARARGS() macro-definition was removed. The prototypes of functions CAESAR_ERROR() and CAESAR_WARNING() was modified to include a first parameter CAESAR_FORMAT (exactly like printf()) in order to be conformant with <stdarg.h>: this change should be totally transparent to the end-users. BUG FIX Number: 911 Date: Wed May 5 17:58:28 MEST 2004 Report: Jaco van de Pol (CWI, Amsterdam, The Netherlands) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/ocis.a Nature: When launching the OCIS simulator in graphical mode, the CAESAR_INIT_GRAPH() primitive was called twice, which was inefficient and possibly erroneous, since initialization actions that perform side effects should be executed only once. IMPROVEMENT Number: 912 Date: Wed May 5 18:48:13 MEST 2004 Report: Jaco van de Pol (CWI, Amsterdam, The Netherlands) Authors: Radu Mateescu and Hubert Garavel (INRIA/VASY) Files: bin.*/evaluator.a Nature: The EVALUATOR 3 model-checker is developed using Lex/Yacc. When linking the "evaluator.a" library against other binary objects (e.g., mcrl.open) also developed using Lex/Yacc, name clashes would occur at link edit time. This problem was solved by prefixing all Lex/Yacc-related identifiers in EVALUATOR 3 with a constant string ("evaluator_yy"). IMPROVEMENT Number: 913 Date: Tue May 25 16:08:34 MEST 2004 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: installator.shar, installator.com, cadp_cygwin.com, src/com/install_uncompress Nature: The INSTALLATOR assistant was made more portable: - An increasing number of operating systems no longer have the "uudecode" command installed by default. From now on, INSTALLATOR will build itself its own version of "uudecode" if the standard "uudecode" is absent from the host machine. Consequently, the "cadp_cygwin.com" shell-script for Windows was simplified, as it no longer needs to install "uudecode": this is now done by INSTALLATOR. - Similarly, INSTALLATOR will build itself its own version of "uncompress" if the host machine has neither "uncompress", nor "compress", nor "gunzip", nor "gzip". Also, the "install_uncompress" shell-script was adapted to perform the installation of CADP using "uncompress", "gzip", etc. depending on what exists. Consequently, the shell-script "cadp_cygwin.com" no longer creates a symbolic link named "uncompress" that points to "gunzip". IMPROVEMENT Number: 914 Date: Tue Jun 1 15:19:44 MEST 2004 Authors: Susanne Graf (VERIMAG) and Wendelin Serwe (INRIA/VASY) Files: demos/demo_32 Nature: A new demo (prepared by Susanne Graf in 1994 and slightly updated by Wendelin Serwe ten years later) was added to the CADP tool set. This demo is about a distributed, lazy cache memory preserving sequential consistency. IMPROVEMENT Number: 915 Date: Wed Jun 2 18:41:59 MEST 2004 Authors: Frederic Tronel and Frederic Lang (INRIA/VASY) Files: demos/demo_33 Nature: A new demo, dealing with a randomized binary distributed consensus protocol proposed by Ben-Or in 1983, was added to the CADP tool set. BUG FIX Number: 916 Date: Tue Jun 8 16:58:07 MEST 2004 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: src/com/cadp_cc, src/com/cadp_mail, src/com/cadp_psbox, src/com/cadp_tail, src/com/install_version, src/com/xeuca_convert, src/com/xeuca_man, src/com/xeuca_ps, src/com/xeuca_version, com/tst, com/upc, ./src/eucalyptus/eucalyptus.tcl, ./src/installator/installator.tcl Nature: Changes were made to the CADP tool set in order to support the Linux distribution "gentoo" and, precisely, to avoid error messages such as: > tail: `-10' option is obsolete; use `-n 10' since this > will be removed in the future To solve this problem, all invocations of the form `head -N', `tail -N', and `tail +N' have been replaced, respectively, by `head -n N', `"$CADP"/src/com/cadp_tail -n N', and `"$CADP"/src/com/cadp_tail -n +N', where "cadp_tail" is a new command. IMPROVEMENT Number: 917 Date: Tue Jun 15 11:59:34 MEST 2004 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: INSTALLATION_0, INSTALLATION_2 Nature: The INSTALLATION_0 and INSTALLATION_2 documentation files have been simplified and adapted to the latest versions of Linux and Cygwin/Windows, and to explain how the $MANPATH variable should be set. IMPROVEMENT Number: 918 Date: Tue Jun 15 15:21:10 MEST 2004 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: src/com/cadp_web, INSTALLATION_2 Nature: On Solaris and Linux, when the environment variable $NAVIGATOR is not set, it is no longer replaced with "netscape" (since most recent Linuxes do not have Netscape installed); instead, several browsers are tried, including Mozilla, Firefox, etc. IMPROVEMENT Number: 919 Date: Wed Jun 16 16:04:29 MEST 2004 Authors: Nicolas Descoubes, Hubert Garavel, and Damien Bergamini (INRIA/VASY) Files: tcl-tk/*, bin.*/xsimulator.a, src/ocis/ocis.tcl, src/eucalyptus/eucalyptus.tcl, src/xsimulator/main.tcl, src/bcg_edit/bcg_edit.tcl, src/installator/installator.tcl, src/monitor/main.tcl, src/com/cadp_x11, demos/demo_19/graphics/startsimu Nature: Several changes were made to port the graphical tools of CADP to Mac OS X: - The version of Tcl/Tk shipped with CADP was upgraded to version 8.4.6. - The version of Tix shipped with CADP was upgraded to version 8.2. - A new shell-script named cadp_x11 was added. IMPROVEMENT Number: 920 Date: Thu Jul 1 16:49:43 MEST 2004 Authors: Nicolas Descoubes and Wendelin Serwe (INRIA/VASY) Files: doc/pdf/Aguilar-Garavel-et-al-01.pdf, doc/pdf/Chehaibar-Garavel-et-al-96.pdf, doc/pdf/Garavel-98.pdf, doc/pdf/Garavel-Lang-01.pdf, doc/pdf/Garavel-Mounier-96.pdf, doc/pdf/Garavel-Viho-Zendri-00.pdf, doc/pdf/Mateescu-00-a.pdf, doc/pdf/Mateescu-96.pdf, doc/pdf/Mateescu-Sighireanu-00.pdf, doc/pdf/Pace-Lang-Mateescu-03.pdf, doc/pdf/Sighireanu-Mateescu-97.pdf Nature: Several PDF files included in the CADP distribution were incorrect (i.e., produced by a bogus PDF document generator). These files have been replaced with correct ones. IMPROVEMENT Number: 921 Date: Fri Jul 2 17:04:15 MEST 2004 Report: Stefan Blom (CWI, Amsterdam, The Netherlands) Author: Hubert Garavel (INRIA/VASY) Files: com/arch, src/com/cadp_cc, src/com/cadp_cpp, src/com/cadp_crlf, src/com/cadp_rm, src/com/install_df, src/com/xeuca_shell, src/com/cadp_which, src/com/xeuca_ps, src/com/xeuca_term Nature: The CADP tool set was ported to AMD's "Opteron" processors running in 32-bit mode under Linux. IMPROVEMENT Number: 922 Date: Mon Jul 5 18:17:49 MEST 2004 Report: Hubert Garavel (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard Nature: The warning messages possibly issued by CAESAR.ADT and CAESAR (in the ".err" file) during the compilation of a LOTOS description are now reproduced by the SVL compiler in the SVL log file. SVL also reports the occurrence of such message to the user, and keeps the ".err" file in the current directory until the ``svl -clean'' command is executed. IMPROVEMENT Number: 923 Date: Thu Jul 8 19:29:23 MEST 2004 Authors: Hubert Garavel and Radu Mateescu (INRIA/VASY) Files: bin.*/libcaesar.a, incl/caesar_standard.h, man/*/caesar_standard.*, doc/*/Garavel-92-a.* Nature: A new function named CAESAR_TEMPORARY_FILE() was added to OPEN/CAESAR's "standard" library. IMPROVEMENT Number: 924 Date: Tue Jul 13 11:21:45 MEST 2004 Report: Jack Abily (BULL) and Axel Belinfante (University of Twente) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: src/com/cadp_cc, src/linux/bin.iX86/libcpatch-2.2.5.a Nature: Backward compatibility support was added for the old GNU C library "glibc 2.2.5" used in former versions of Linux such as Redhat 7.2. This avoids error messages about undefined symbols at link edit time, such as: > .../CADP/bin.iX86/libBCG.a(bcg_read_2.o): In function > `BCG_STRING_TO_UPPER': undefined reference to > `__ctype_toupper_loc' or: > .../CADP/bin.iX86/libBCG.a(bcg_stream.o): In function > `BCG_PRINT_IN_DOUBLE_QUOTE': undefined reference to > `__ctype_b_loc' IMPROVEMENT Number: 925 Date: Tue Jul 13 14:47:58 MEST 2004 Author: Damien Bergamini (INRIA/VASY) Files: bin.*/caesar.bdd, man/*/caesar.bdd.* Nature: A new tool named CAESAR.BDD was added to the CADP tool set. This tool uses Binary Decision Diagrams to compute structural properties of Basic Petri Nets. See the "caesar.bdd" manual page for details. IMPROVEMENT Number: 926 Date: Tue Jul 13 17:11:50 MEST 2004 Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, man/*/caesar.* Nature: The optimization E7 of CAESAR, which removes all network transitions that never fire according to Petri net rules, was redesigned. The former optimization E7 was based on the explicit enumeration of all reachable markings ("explicit-state" approach); it was optional and only executed if the "-e7" option was given on the command-line when invoking CAESAR. The new optimization E7 is based on Binary Decision Diagrams and relies on the CAESAR.BDD tool (see item #925 above). Since this new optimization is much faster, it is no longer optional: it is performed by default every time CAESAR is invoked. Experiments have shown that the new optimization E7 could handle large LOTOS examples that could not be processed by the old optimization, due to lack of memory. We found no counter-example that the old optimization, but not the new one, could handle. Moreover, on several hundreds of LOTOS examples handled by both the old and new optimizations, the new optimization proved to be faster than the old optimization by 19%. On the same hundreds of examples, it appeared that applying the new optimization E7 is as fast as applying no optimization E7, either new or old (in fact, it is even slightly faster by 0.6%). Thus, the time spent in BDD computations to remove dead transitions is totally compensated by the state space reductions and time savings arising from a smaller network. The semantics of CAESAR's command-line options was modified as follows: - A new option "-e7old" was added for backward compatibility, so as to retain the former behaviour of CAESAR. This option performs the old optimization E7 instead of the new one. - Option "-e7" no longer performs the old optimization E7; its new meaning is to disable the new optimization E7. - In absence of both "-e7" and "-e7old", the new optimization E7 is peformed by default. In summary, there are now three cases: - If you do not want optimization E7: use "-e7" option. - If you want the old optimization E7: use "-e7old" option. - If you want the new optimization E7: use no option. The CAESAR manual page was updated accordingly. IMPROVEMENT Number: 927 Date: Thu Jul 15 12:03:01 MEST 2004 Report: Nicolas Descoubes (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: src/com/xeuca_info Nature: Changes were brought to the "xeuca_info" shell-script in order to support recent Linux distributions and, precisely, to avoid error messages of the form: > cut: invalid byte, character or field list IMPROVEMENT Number: 928 Date: Fri Jul 16 14:40:55 MEST 2004 Author: Damien Bergamini (INRIA/VASY) Files: ./INSTALLATION_MACOS, ./INSTALLATION_WINDOWS, ./INSTALLATION_0 Nature: Following the efforts under way to port CADP to Mac OS X, the documentation files have been updated: - A new file named INSTALLATION_MACOS explains the preliminary steps needed to get CADP working on Mac OS X. - The already existing file INSTALLATION_0 was renamed into INSTALLATION_WINDOWS, and a symbolic link INSTALLATION_0 pointing to INSTALLATION_WINDOWS was installed for backward compatibility. IMPROVEMENT Number: 929 Date: Tue Jul 20 11:33:57 MEST 2004 Report: Humberto Osorio (Universidade Federal do Ceara, Brazil) Author: Hubert Garavel (INRIA/VASY) Files: bin.iX86/* Nature: The Linux binaries of CADP tools have been made compatible with recent Linux distributions based on the Linux 2.6 kernel, such as Mandrake version 10. BUG FIX Number: 930 Date: Wed Jul 21 20:30:43 MEST 2004 Report: Lars-Ake Fredlund (SICS, Sweden), Marc Herbert (INRIA/VASY), and Guy Tremblay (Universite du Quebec a Montreal, Canada) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/* Nature: 8-bit characters are now allowed in LICENSE files. Previously, only 7-bit characters were permitted, and the use of 8-bit characters would generate error messages of the form: > *018 protection violation: > falsified license > wrong global checksum > quit IMPROVEMENT Number: 931 Date: Fri Jul 23 16:54:03 MEST 2004 Report: Gert Huisman (Vrije Universiteit Amsterdam, The Netherlands), and Christophe Joubert (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/*, com/rfl, INSTALLATION_3 Nature: The CADP licensing mechanism was enhanced to allow multiple license files. In addition to the primary license file named "$CADP/LICENSE", it is now possible to have a secondary license file named "$CADP/LICENSE.1", and even a tertiary license file named "$CADP/LICENSE.2". These files will be checked in the following order: primary, then secondary, then tertiary. This feature is intended to administrators of clusters or large networks with hundreds of machines: secondary/ tertiary license files allow to obtain licenses for machines that were down or otherwise unavailable at the time the primary license file was prepared. BUG FIX Number: 932 Date: Sat Aug 7 11:28 MES 2004 Report: Katsumi Wasaki (Shinshu University, Nagano, Japan) Author: Hubert Garavel (INRIA/VASY) Files: demos/demo_04/EXP.t, incl/caesar_kernel.h Nature: The two files "EXP.t" and "caesar_kernel.h" were changed so as to remplace the inclusion of <malloc.h> (which does not exist on Mac OS X) by the inclusion of <stdlib.h>. This suppresses the following error messages emitted by CAESAR and CAESAR.ADT: > .. malloc.h: No such file or directory > #127 error in file ``.h'' during type survey: > survey program is rejected by the C compiler > quit IMPROVEMENT Number: 933 Date: Tue Aug 24 14:57:26 MEST 2004 Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2c, bin.*/libexpopen.a, bin.*/libexp_open.a, com/exp.open, man/*/exp.open.* Nature: The EXP.OPEN 1.0 tool, which allows to compile networks of communicating LTSs into the OPEN/CAESAR "caesar_graph" API, was replaced by a new version EXP.OPEN 2.0 entirely rewritten from scratch. The input language of EXP.OPEN 2.0 (i.e., the contents of ".exp" files) is a superset of the input language of EXP.OPEN 1.0. That is, the networks of communicating LTSs accepted by EXP.OPEN 1.0 (i.e., LTS files combined using LOTOS parallel composition and gate hiding operator) are still accepted by EXP.OPEN 2.0, which also brings the following extensions: - The "hide" operator was generalized so that labels can be defined using regular expressions, possibly in a separate file, according to the conventions of the "caesar_hide_1" library. - Two new operators, "rename" and "cut", were added to the input language of EXP.OPEN 2.0. Like the generalized "hide" operator, these operators allow labels to be specified using regular expressions, possibly in a separate file. - The generalized parallel composition ("par") operator of E-LOTOS was also added; this operator provides advanced features, including "n among m" synchronization. - Finally, operators brought from various formalisms were also added to the input language of EXP.OPEN 2.0, namely: - a parallel composition operator based on the notion of synchronization vectors (as in the MEC and FC2 tools), - the parallel composition operators of the CCS, CSP, and mCRL process algebras, - the renaming, cut, and hiding operators of the CCS and CSP process algebras. The command-line syntax of EXP.OPEN 2.0 also extends that of EXP.OPEN 1.0 with new functionalities: - New "-branching" and "-ratebranching" options allow to use partial order methods to reduce (at least, partially) state spaces while preserving branching and stochastic branching bisimulations, respectively. By default, strong bisimulation is preserved. - A new "-network" option allows to translate the EXP.OPEN 2.0 input language into other (lower-level) formats. Currently, two such formats are supported: the Petri net format of the PEP tool (use "-network pep" option) and the parallel FC2 format (use "-network fc2"). - New options ("-ccs", "-csp", "-elotos", "-lotos", "-mcrl") allow to interpret the input language of EXP.OPEN 2.0 according to the conventions used in the languages CCS, CSP, E-LOTOS, LOTOS, and muCRL, respectively. These conventions rule, for instance, the case sensitivity in identifiers, the string denoting the silent action ("i", "tau", etc.), the semantics of the "||" operator, etc. EXP.OPEN 2.0 corrects all known bugs in EXP.OPEN 1.0. In particular: - the scope of nested "hide" operators is now correctly handled, - there is no more limitation in the number of labels that EXP.OPEN can process, and - function CAESAR_HASH_SIZE_STATE() of the OPEN/CAESAR "caesar_graph" API now returns a correct result. In the demonstration examples present in the $CADP/demos directory, EXP.OPEN 2.0 uses about 2 times less memory than EXP.OPEN 1.0, and runs from 1.5 to 45 times faster. EXP.OPEN 2.0 provides the user with a better understanding of the generated LTS by indicating, for each of its actions, the history of successive operations (synchronizations, hidings, renamings) that engendered this action. Note: EXP.OPEN 2.0 uses a new library named "libexp_open.a", which replaces the older "libexpopen.a". See the EXP.OPEN manual page for more information. IMPROVEMENT Number: 934 Date: Tue Aug 24 16:09:39 MEST 2004 Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: bin.*/exp2fc2, com/exp2fc2, man/*/exp2fc2.* Nature: The EXP2FC2 program (which contained a few bugs and only supported the input language of EXP.OPEN 1.0) was replaced by a simple shell-script that invokes EXP.OPEN 2.0 with the "-network fc2" option. Indeed, exp2fc2 FILE.exp FILE.fc2 is equivalent to: exp.open -case -network fc2 FILE.exp The manual page for EXP2FC2 was updated. IMPROVEMENT Number: 935 Date: Thu Aug 26 14:57:26 MEST 2004 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/rfl Nature: The option "-l" of the RFL shell-script was enhanced so as to support the secondary and ternary license files, if any (see item #931 above). IMPROVEMENT Number: 936 Date: Fri Aug 27 10:36:35 MEST 2004 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/*, src/com/*, ./INSTALLATION_1, ./INSTALLATION_2, ./INSTALLATION_3, ./INSTALLATION_4 Nature: Most CADP shell-scripts were modified in order to support spaces in file names. However, this work is not complete yet, so the use of spaces in file names is still discouraged. Also, the documentation files INSTALLATION_* were updated: double quotes were added around every occurrence of $CADP to deal with the presence of spaces in directory and file names. BUG FIX Number: 937 Date: Tue Aug 31 11:38:51 MEST 2004 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/tst, src/com/cadp_adjust, src/com/cadp_windows, src/installator/installator.tcl, ./INSTALLATION_4 Nature: The existing "cadp_windows" shell-script was renamed into "cadp_adjust". This shell-script fixes two issues arising on Windows: - The Cygwin symbolic links are not recognized by standard Win32 applications, among which the CADP binaries; the script "cadp_adjust" solves this problem by replacing all symbolic links by their target. - The text files of CADP contain only LF characters and, thus, do not display properly on certain Windows applications such as Notepad; the script "cadp_script" solves this problem by replacing every LF character by a pair CR/LF. The INSTALLATOR assistant was modified to invoke "cadp_adjust" automatically when installing CADP on a Windows system. The "INSTALLATION_4" file (directives for manual installation of CADP) was modified to mention that "cadp_adjust" must be invoked. Finally, the "tst" shell-script was adapted to detect whether "cadp_adjust" has been been correctly applied. IMPROVEMENT Number: 938 Date: Wed Sep 1 15:13:28 MEST 2004 Report: Damien Bergamini (INRIA/VASY) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: bin.macOS/xsimulator.a Nature: The XSIMULATOR tool was ported to Mac OS X. It will launch automatically the X11 server if this server is not already running. This is done by invoking the $CADP/src/com/cadp_x11 shell-script. BUG FIX Number: 939 Date: Mon Sep 6 10:30:49 MEST 2004 Author: David Champelovier (INRIA/VASY) Files: com/caesar.open Nature: The "caesar.open" shell-script no longer sets the environment variable $CADP_LANGUAGE to "-english", as this was overriding the genuine value of $CADP_LANGUAGE set by the user and the "-french" option possibly passed to "caesar.open". BUG FIX Number: 940 Date: Tue Sep 7 14:44:02 MEST 2004 Report: Damien Bergamini (INRIA/VASY) Author: Nicolas Descoubes (INRIA/VASY) Files: src/bcg_edit/bcg_edit.tcl Nature: A bug was fixed in the BCG_EDIT tool. After selecting "Load BCG" in the "File" menu, and then making a double click (instead of a simple click) on a directory name different from the parent directory "..", a warning message would occur: > bad listbox index "": must be active, anchor, end, > @x,y, or a number IMPROVEMENT Number: 941 Date: Thu Sep 9 15:05:57 MEST 2004 Report: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar.bdd, bin.*/caesar, man/*/caesar.bdd.* Nature: The CAESAR.BDD tool was enhanced in several ways: - The Basic Petri Net format was extended with, for each unit, the list of its sub-units; - CAESAR.BDD now handles properly user interrupts (Ctrl-C); - CAESAR.BDD now returns different exit codes for each cause of error; - A bug with option "-unit" was fixed. The CAESAR compiler was also enhanced to recover from the various errors faced by CAESAR.BDD, to display relevant error messages, to abort optimization E7 properly, and to continue its execution. BUG FIX Number: 942 Date: Mon Sep 13 10:30:10 MEST 2004 Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: demos/demo_26/* Nature: The ADT_ENUM_NEXT_NAT() iterators defined in the ".f" files of demo_26 have been updated to avoid a "macro redefined" warning produced by the C compiler. Also, all the ".f" files have been renamed into ".t" files, to follow the CAESAR.ADT conventions. BUG FIX Number: 943 Date: Mon Sep 13 10:59:08 MEST 2004 Report: David Champelovier (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/libBCG_IO.a Nature: A bug was fixed in the BCG_IO_WRITE_BCG_END() function of the "bcg_write" API; in some cases, this bug would cause a segmentation fault / core dump on Linux. IMPROVEMENT Number: 944 Date: Fri Sep 17 11:33:25 MEST 2004 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/rfl, com/installator, src/installator/*, installator.shar Nature: The CADP installation procedure was enhanced so that CADP users can receive by e-mail a reminder message a fixed number of days (by default, 30 days) before their license expires. This new feature required the following changes: - LICENSE files now contain the e-mail address of the person to whom the reminder message will be sent; - LICENSE files also contain the number of days in advance at which the reminder must be set; - The RFL shell-script was extended with two new options ("-e" and "-r") that extract from LICENCE files the e-mail address and the number of days, respectively; - INSTALLATOR now always asks for an e-mail address (before, this was optional for Unix and only mandatory on Windows); incidentally, this will solve the problem of LICENSE files sent to the CADP team from the "root" account of Unix, which could be returned only to "root" and not to a real user e-mail address. BUG FIX Number: 945 Date: Fri Sep 24 10:03:30 MEST 2004 Report: Marc Herbstritt (Albert-Ludwigs University, Freiburg, Germany), Venkatesh P. Ranganath (Kansas State University, USA), and Judi Romijn (Technical Univ. of Eindhoven, The Netherlands) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: src/installator/installator.tcl, src/com/install_uncompress Nature: On recent Linux systems equipped with GNU tar version 1.14, the INSTALLATOR assistant would fail with the following error message: > Extracting files from archive CADP_...tar.Z > ./src/linux/bin.iX86/ > ./src/linux/bin.iX86/libcpatch-2.2.5.a > ./gc/bin.iX86/ > ./gc/bin.iX86/COPYRIGHT_GC > ... > ./bin.iX86/cadp_hostinfo > ./bin.iX86/bcg_graph > ./bin.iX86/caesar.bdd > Error while decompressing This problem (which did not occur with the previous version 1.13.25 of GNU tar) is due to an unexpected change in the behaviour of GNU tar, the new version of which writes a message (of the form "tar: Read 1536 bytes from -") to the stderr stream even if the extraction performed successfully. The presence of such messages on the stderr stream confused INSTALLATOR, which believed that an error occurred. This problem was fixed. Additionally, to prevent similar errors arising from further modifications of GNU tar, gzip, or uncompress, various buttons were added ("Abort", "Retry", "Continue"), so that the user can decide to continue if he/she believes that extraction performed correctly. IMPROVEMENT Number: 946 Date: Fri Sep 24 10:50:51 MEST 2004 Report: Christophe Lohr (Concordia University, Montreal, Canada), and Philippe Marty (Universite de Paris-Sud, Orsay, France) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: src/installator/installator.tcl, ./INSTALLATION_3, ./INSTALLATION_4 Nature: The INSTALLATOR assistant was modified to address the case of machines that cannot send prototype license files using e-mail (and also the case of machines that can send e-mail actually, but in an undetectable way, i.e. a way that cannot be predicted reliably in advance). By default, the new version of INSTALLATOR will send the prototype license files using the FTP protocol, i.e., by uploading these files onto the VASY FTP server. However, INSTALLATOR will still provide the user with 3 possibilities: "Send by FTP", "Send by e-mail", and "Save to disk". BUG FIX Number: 947 Date: Mon Sep 27 09:12:00 MEST 2004 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel Nature: A bug was fixed in SVL to handle non-quoted identifiers correctly when the "-case" option is set. BUG FIX Number: 948 Date: Thu Sep 30 17:04:45 MEST 2004 Report: Greg Eakman (Boston University, Massachussets, USA) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/installator, src/installator/installator.tcl, src/com/install_clone, src/com/install_lock, src/installator/bin.win32/install_lock.exe Nature: A double problem with the Windows version of INSTALLATOR was solved. This problem comes from the "locks" that Windows puts on files and directories when they are in use. When locked, a file or a directory cannot be removed or modified. Thus, the Windows version of INSTALLATOR would fail to upgrade CADP properly if, for instance, a binary program of CADP was already executing (first problem). Also, when INSTALLATOR was launched from an existing CADP installation (i.e., by running the command "$CADP/com/installator"), rather than launched from the "installator.com" file, this would create a lock on the existing "$CADP/com" directory (because of the existence of a running program in this directory), and thus this directory would become unwritable and would prevent CADP from being upgraded properly (second problem). To solve these two Windows-specific locking problems, the following changes were made to INSTALLATOR: - When "$CADP/com/installator" is launched to upgrade an existing version of CADP (located in directory "$CADP"), INSTALLATOR will start by "cloning" itself, i.e., copying all its files in "/tmp" and re-launching itself from there. This avoids creating a lock on "$CADP/com" and, thus, solves the second problem. - In addition, a test was added to terminate the execution of INSTALLATOR if the "$CADP" directory is locked, i.e., if some CADP program is already executing. This addresses the first problem. BUG FIX Number: 949 Date: Mon Oct 4 17:01:07 MEST 2004 Report: Hubert Garavel and Radu Mateescu (INRIA/VASY) Author: Nicolas Descoubes (INRIA/VASY) Files: com/upc, com/rfl, com/cadp_hostname Nature: A minor problem of RFL on Solaris was fixed. This problem (upper-case letters instead of lower-case letters in prototype license files) only occurred when RFL invoked "/usr/bin/tr" instead of "/usr/ucb/tr". IMPROVEMENT Number: 950 Date: Mon Oct 4 19:14:13 MEST 2004 Report: Hubert Garavel (INRIA/VASY) Author: Nicolas Descoubes (INRIA/VASY) Files: com/tst Nature: Changes were brought to "tst" in order to allow a better detection of the Glibc version number. The modified version of "tst" now uses three different methods to ensure that the Glibc version number will be properly detected. BUG FIX Number: 951 Date: Fri Oct 8 14:46:09 MEST 2004 Report: Frederic Lang (INRIA/VASY) Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/bcg_min Nature: A bug in the implementation of the branching stochastic bisimulation was fixed in the BCG_MIN tool. Due to this bug, the reduction was not "total" in the sense that one single call to "bcg_min -rate -branching" would not always yield the minimal stochastic LTS (in some cases, several calls would be necessary). IMPROVEMENT Number: 952 Date: Tue Oct 12 12:17:52 MEST 2004 Report: Solofo Ramangalahy (BULL) and Ken Turner (University of Stirling, Scotland, UK) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/rfl, src/com/install_rfl, src/installator/installator.tcl Nature: The RFL and INSTALLATOR tools were modified to provide a better support for the SSH protocol. Previously, the RFL command tried to estblish remote connections using, first, "rsh", then "ssh", then "krsh", and thus could be slow (due to timeouts) for machines supporting "ssh" but not "rsh". To address this issue, a new "-p" option was added to RFL, which specifies the protocol ("rsh", "ssh", or "krsh") to be tried first when attempting remote connections. The shell "install_rfl" was also modified to support this "-p" option. Finally, INSTALLATOR was modified to offer the choice between these three protocols. BUG FIX Number: 953 Date: Tue Oct 12 15:29:32 MEST 2004 Report: Tomas Barros (INRIA/OASIS, Sophia-Antipolis, France) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: installator.shar Nature: The Mac OS X version of "installator.shar" was modified to solve a problem with the version of "uudecode" present on MacOS X 10.3; for security purpose, this particular version of "uudecode" requires a "-s" option, otherwise it removes the last "/" in the pathnames, leading to error messages of the form: > installator.shar: line 807: /tmp/_sh01984/cmp: > No such file or directory This problem was solved. IMPROVEMENT Number: 954 Date: Mon Oct 18 11:20:53 MEST 2004 Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2c, man/*/exp.open.* Nature: A new "-interface" option was added to EXP.OPEN 2.0. This option allows to synthesize an "interface" expressing the synchronization constraints imposed on one LTS by (a subset of) its neighbour LTSs in a parallel composition expression. Practically, EXP.OPEN with option "-interface" generates a C file containing an OPEN/CAESAR graph module (implicit LTS) and a ".sync" file containing a list of labels. The graph module can be then translated into an interface (explicit LTS) using the GENERATOR tool. The resulting LTS can then be given, together with the ``.sync'' file, to the PROJECTOR tool. See the updated "exp.open" manual page for more details. IMPROVEMENT Number: 955 Date: Tue Oct 19 16:42:10 MEST 2004 Authors: Nicolas Descoubes, Hubert Garavel, Christophe Joubert, and Radu Mateescu (INRIA/VASY) Files: man/*/bcg_info.*, man/*/bcg_labels.*, man/*/bcg_min.*, man/*/caesar_*.*, doc/*/Garavel-92-a.* Nature: Various mistakes have been fixed in the BCG_INFO, BCG_LABELS, and BCG_MIN manual pages, and in the OPEN/CAESAR reference manual. IMPROVEMENT Number: 956 Date: Thu Oct 21 15:03:55 MEST 2004 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: incl/caesar_hash.h, bin.*/libcaesar.a, man/*/caesar_hash.*, doc/*/Garavel-92-a.* Nature: In the "hash" library of OPEN/CAESAR, the existing macro- definitions CAESAR_STATE_i_HASH(), where i = 0..6, and CAESAR_LABEL_0_HASH() have been turned into functions, so that they can be passed as actual parameters to other functions. Also, new functions CAESAR_LABEL_i_HASH(), where i= 1..6, and CAESAR_STRING_0_HASH() have been added to the "hash" library. IMPROVEMENT Number: 957 Date: Thu Oct 21 16:55:58 MEST 2004 Author: Hubert Garavel (INRIA/VASY) Files: incl/caesar_standard.h, bin.*/libcaesar.a, man/*/caesar_standard.*, doc/*/Garavel-92-a.* Nature: The "standard" library of OPEN/CAESAR was enhanced in three ways: - Better explanations about CAESAR_ALIGNMENT_POINTER() and the notion of alignment factor have been added. - Five new "functional" types have been added, respectively: CAESAR_TYPE_GENERIC_FUNCTION, CAESAR_TYPE_COMPARE_FUNCTION, CAESAR_TYPE_HASH_FUNCTION, CAESAR_TYPE_CONVERT_FUNCTION, and CAESAR_TYPE_PRINT_FUNCTION. - A new function CAESAR_FUNCTION_NAME() was added, which allows a better display of the predefined function names of the OPEN/CAESAR library. IMPROVEMENT Number: 958 Date: Thu Oct 21 18:16:09 MEST 2004 Authors: Frederic Lang and David Champelovier (INRIA/VASY) Files: com/svl, bin.*/svl_kernel, src/svl/standard Nature: SVL was improved in order to work correctly when the $CADP environment variable contains spaces or blank characters. IMPROVEMENT Number: 959 Date: Mon Oct 25 15:21:22 MEST 2004 Author: Hubert Garavel (INRIA/VASY) Files: incl/caesar_block_1.h, bin.*/libcaesar.a, man/*/caesar_block_1.*, doc/*/Garavel-92-a.* Nature: A new OPEN/CAESAR library named "block_1" was added to CADP. This library provides some form of object-orientation for memory blocks of different classes (ordinary, empty, state, label, or string). IMPROVEMENT Number: 960 Date: Wed Nov 3 16:32:35 MET 2004 Authors: Hubert Garavel and Nicolas Descoubes (INRIA/VASY) Files: incl/caesar_mask_1.h, bin.*/libcaesar.a, man/*/caesar_mask_1.*, doc/*/Garavel-92-a.* Nature: A new OPEN/CAESAR library named "mask_1" was added to CADP. This library allows to perform sequences of hiding and renaming operations on memory blocks (labels, strings, ...) in the style of BCG_LABELS command-line options. IMPROVEMENT Number: 961 Date: Wed Nov 3 17:33:08 MET 2004 Authors: Hubert Garavel and Nicolas Descoubes (INRIA/VASY) Files: src/open_caesar/generator.c, src/open_caesar/generator2.c, src/open_caesar/reductor.c, src/open_caesar/reductor2.c, src/open_caesar/READ_ME, incl/bcg_options.h Nature: The GENERATOR and REDUCTOR tools have been enhanced with new command-line options: - Options "-uncompress", "-compress", "-register", "-short", "-medium", "-size", and "-tmp" allow to control the generated BCG graph. For these options, the "bcg_options.h" header file was added in directory $CADP/incl. - Options "-hide" and "-rename" (together with the qualifiers "-total", "-partial", "-gate", "-single", and "-multiple") perform on-the-fly hiding and/or renaming of labels. These options are implemented using the recent "mask_1" library (see item #960 above). The source C code of GENERATOR and REDUCTOR is available in directory $CADP/src/open_caesar. The former versions of GENERATOR and REDUCTOR (which are easier to read and to understand than the latest versions) are kept in that directory for user information (see the READ_ME file for information). IMPROVEMENT Number: 962 Date: Mon Nov 15 12:34:39 MET 2004 Author: Hubert Garavel (INRIA/VASY) Files: incl/caesar_stack_1.h, bin.*/libcaesar.a, man/*/caesar_stack_1.*, doc/*/Garavel-92-a.* Nature: The programming interface of OPEN/CAESAR's "stack_1" library was improved: - A new function type CAESAR_TYPE_OVERFLOW_FUNCTION_STACK_1 was added to caesar_stack_1.h. - Consequently, the type of the 3rd argument CAESAR_OVERFLOW of function CAESAR_CREATE_STACK_1() was changed into CAESAR_TYPE_OVERFLOW_FUNCTION_STACK_1. The explanations given in the "stack_1" manual page regarding this argument were simplified. This change is fully compatible at the binary level, meaning that all OPEN/CAESAR application tools available under binary form (".a" or ".o") need not be recompiled with the modified "caesar_stack_1.h" file and can be directly linked against the modified "libcaesar.a" library. IMPROVEMENT Number: 963 Date: Wed Nov 17 15:27:24 MET 2004 Authors Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: bin.*/bcg_labels Nature: The code of the BCG_LABELS tool was greatly simplified by taking advantage of the recent "mask_1" library (see item #960 above). This simplification should be totally transparent to the end-user. IMPROVEMENT Number: 964 Date: Thu Nov 25 14:28:06 MET 2004 Report: Damien Bergamini (INRIA/VASY) Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: ./tst Nature: The "tst" shell-script was improved in order to detect, on MacOS, situations in which the maximal size allocated to the execution stack is unsufficient. For instance, setting a limit of 512 kbytes to the execution stack might cause BCG_MIN to abort with a core dump. The improved "tst" will warn about such situations. IMPROVEMENT Number: 965 Date: Wed Dec 1 17:59:33 MET 2004 Author: Hubert Garavel (INRIA/VASY) Files: bin.*/libBCG_IO.a, man/*/bcg_write.* Nature: In function BCG_IO_WRITE_BCG_BEGIN() of the "bcg_write" API, it is now permitted to give a NULL value to the parameter bcg_creation_comment. IMPROVEMENT Number: 966 Date: Fri Dec 3 15:07:12 MET 2004 Authors: Holger Hermanns (Saarland University), Christophe Joubert, Hubert Garavel, and David Champelovier (INRIA/VASY) Files: bin.*/bcg_steady, bin.*/bcg_transient, bin.*/READ_ME man/*/bcg_steady.*, man/*/bcg_transient.* Nature: Two new tools, BCG_STEADY and BCG_TRANSIENT, for performance evaluation have been integrated into the CADP toolbox. The BCG_STEADY tool performs steady-state analysis, and the BCG_TRANSIENT tool performs transient analysis. For details, see the manual pages. BUG FIX Number: 967 Date: Fri Dec 10 14:44:28 MET 2004 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard, man/man.*/svl.* Nature: A semantic bug was fixed in SVL. An ``abstraction'' operator with a synchronization set of the form ``all but'' followed by an empty list of gates or labels was processed exactly as an ``abstraction'' operator without synchronization set. SVL was modified to implement the correct semantics, namely: - In the former case, synchronization is required on all gates or labels (depending on the matching mode) that occur in the interface graph, except "i". - In the latter case, synchronization is required on all gates or labels (depending on the matching mode) that occur in any of the interface and/or specification graphs, except "i". IMPROVEMENT Number: 968 Date: Mon Dec 13 09:10:15 MET 2004 Author: Wendelin Serwe (INRIA/VASY) Files: incl/caesar_hash.h, bin.*/libcaesar.a, man/*/caesar_hash.*, doc/*/Garavel-92-a.* Nature: The dispersion of the hash function CAESAR_STRING_0_HASH() was improved. IMPROVEMENT Number: 969 Date: Mon Dec 13 15:34:45 MET 2004 Author: Hubert Garavel (INRIA/VASY) Files: incl/caesar_block_1.h, incl/caesar_area_1.h, bin.*/libcaesar.a, man/*/caesar_block_1.*, man/*/caesar_area_1.*, doc/*/Garavel-92-a.* Nature: The recent "block_1" library of OPEN/CAESAR was renamed into "area_1" in order to avoid confusion with the notion of block used in the "solve_1" library to be added soon to OPEN/CAESAR (see item #979 below). Consequently, the include files and manual pages named "caesar_block_1.*" have been renamed into "caesar_area_1.*". Also, the "area_1" library was extended with the notion of empty area. Finally, a new function CAESAR_HASH_STRING_AREA_1() was added. BUG FIX Number: 970 Date: Mon Dec 13 19:01:18 MET 2004 Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: incl/caesar_table_1.h, bin.*/libcaesar.a, man/*/caesar_table_1.*, doc/*/Garavel-92-a.*, com/upc Nature: The "table_1" library of OPEN/CAESAR, and especially its CAESAR_CREATE_TABLE_1() function, have been enhanced in subtle ways. The rationale for these changes are threefold: - Take advantage of the new "area_1" library to improve and simplify the programming interfaces (API) of "table_1": in particular, the use of "area_1" now allows to specify both the memory size and the memory alignment for the base and mark fields (the previous "table_1" API only allowed to specify the memory size). - Make the "table_1" more generic (so that it becomes simpler to use the table to store other objects than states) by using the functionnalities of the "area_1" library for automatic selection of hash functions, printing functions, etc. This removes odd dependencies of the "table_1" with respect to the notion of states. - Solve an issue that occurred when the base field and the mark field had different memory alignments; the mark field would be improperly aligned, possibly resulting in run-time errors (segmentation faults) unless the programmer took explicit provision to avoid this problem; from now on, the "table_1" library will insert appropriate padding bytes before and after the mark field, so that base and mark fields are always aligned properly. Strictly speaking, these changes are not upward compatible with the previous versions of the "table_1" library. We introduced these changes nevertheless since we believed that they were required for a long-term future. However, we took great care to ensure backward compatibility as much as possible, although we cannot guarantee this in all cases. Users facing problems with this migration should contact the [email protected] mailing-list. All the changes concern the CAESAR_CREATE_TABLE_1() function, which has 10 parameters. Specifically, the changes concern the 2nd, 3rd, 7th, 8th, 9th, and 10th parameters. * Changes for the 2nd parameter (CAESAR_BASE_SIZE) From now on, the parameter CAESAR_BASE_SIZE is declared of type CAESAR_TYPE_AREA_1 instead of CAESAR_TYPE_NATURAL. In most cases, this change should be upward compatible. However, we strongly advise users of the "table_1" library to examine every call to CAESAR_CREATE_TABLE_1() and to update the actual values supplied for the CAESAR_BASE_SIZE parameter: instead of a mere natural number, the actual value should be formed using the appropriate primitives provided by the "area_1" library. These primitives allow to specify memory alignment constraints for the base field and to make special cases of base fields (states, labels, strings, etc.) explicit. * Changes for the 3rd parameter (CAESAR_MARK_SIZE) From now on, the parameter CAESAR_MARK_SIZE is declared of type CAESAR_TYPE_AREA_1 instead of CAESAR_TYPE_NATURAL. In most cases, this change should be upward compatible. However, we strongly advise users of the "table_1" library to examine every call to CAESAR_CREATE_TABLE_1() and to update the actual values supplied for the CAESAR_MARK_SIZE parameter: instead of a mere natural number, the actual value should be formed using the appropriate primitives provided by the "area_1" library. These primitives allow to specify memory alignment constraints for the mark field and to make special cases of mark fields (states, labels, strings, etc.) explicit. * Changes for the 7th parameter (CAESAR_COMPARE) A new type CAESAR_TYPE_COMPARE_FUNCTION_TABLE_1 was added to "caesar_table_1.h". This new type is used to declare the 7th parameter of CAESAR_CREATE_TABLE_1(), which is now declared as CAESAR_TYPE_COMPARE_FUNCTION_TABLE_1 CAESAR_COMPARE; instead of CAESAR_TYPE_BOOLEAN (*CAESAR_COMPARE)(CAESAR_TYPE_POINTER, CAESAR_TYPE_POINTER) Both forms are equivalent from a type-checking point of view. Additionally, the semantics of CAESAR_CREATE_TABLE_1() was modified in the case where CAESAR_COMPARE is NULL. Formerly, in such case, a NULL value of CAESAR_COMPARE was replaced by CAESAR_COMPARE_STATE() provided that the memory size of the base field was equal to CAESAR_SIZE_STATE(), otherwise a run-time error would occur. From now on, a NULL value of CAESAR_COMPARE() is replaced by a default function determined by the CAESAR_USE_COMPARE_FUNCTION_AREA_1() of the "area_1" library. The explanations regarding the CAESAR_COMPARE parameter in the "table_1" manual page have been simplified accordingly. * Changes for the 8th parameter (CAESAR_HASH) The 8th parameter of CAESAR_CREATE_TABLE_1() is now declared as CAESAR_TYPE_HASH_FUNCTION CAESAR_HASH; where the type CAESAR_TYPE_HASH_FUNCTION is defined as typedef CAESAR_TYPE_NATURAL (*CAESAR_TYPE_HASH_FUNCTION) (CAESAR_TYPE_POINTER, CAESAR_TYPE_NATURAL); instead of CAESAR_TYPE_NATURAL (*CAESAR_HASH) (CAESAR_TYPE_POINTER, CAESAR_TYPE_NATURAL, CAESAR_TYPE_NATURAL); Both forms are *not* equivalent from a type-checking point of view, since from now on, CAESAR_HASH() has only 2 parameters whereas it had 3 parameters previously. This change was needed to give a uniform profile to hash functions throughout all OPEN/CAESAR APIs. Therefore, from now on, one should no longer use for the CAESAR_HASH parameter certain functions of the "hash" library, such as CAESAR_0_HASH(), CAESAR_1_HASH(), etc. However, the new version of the "table_1" library tries to provide some (limited) upward compatibility by detecting when certain functions with 3 parameters are used, in which case the missing parameter is supplied automatically. However, relying on this undocumented feature is not recommended, as it could disappear from further versions of CADP. Additionally, the semantics of CAESAR_CREATE_TABLE_1() was modified in the case where CAESAR_HASH is NULL. Formerly, in such case, a NULL value of CAESAR_HASH was replaced by CAESAR_HASH_STATE() provided that the memory size of the base field was equal to CAESAR_SIZE_STATE(), otherwise a run-time error would occur. From now on, a NULL value of CAESAR_HASH() is replaced by a default function determined by the CAESAR_USE_HASH_FUNCTION_AREA_1() of the "area_1" library. The explanations regarding the CAESAR_HASH parameter in the "table_1" manual page have been simplified accordingly. * Changes for the 9th parameter (CAESAR_PRINT) A new type CAESAR_TYPE_PRINT_FUNCTION_TABLE_1 was added to "caesar_table_1.h". This new type is used to declare the 9th parameter of CAESAR_CREATE_TABLE_1(), which is now declared as CAESAR_TYPE_PRINT_FUNCTION_TABLE_1 CAESAR_PRINT; instead of void (*CAESAR_PRINT) (CAESAR_TYPE_FILE, CAESAR_TYPE_POINTER); Both forms are equivalent from a type-checking point of view. Additionally, the semantics of CAESAR_CREATE_TABLE_1() was modified in the case where CAESAR_PRINT is NULL. Formerly, in such case, a NULL value of CAESAR_PRINT was replaced by CAESAR_PRINT_STATE() provided that the memory size of the base field was equal to CAESAR_SIZE_STATE(), otherwise a run-time error would occur. From now on, a NULL value of CAESAR_PRINT() is replaced by a default function determined by the CAESAR_USE_PRINT_FUNCTION_AREA_1() of the "area_1" library; this function will print both the base field and the mark field (if not empty) whereas the mark field was never displayed formerly. The explanations regarding the CAESAR_PRINT parameter in the "table_1" manual page have been simplified accordingly. * Changes for the 10th parameter (CAESAR_OVERFLOW): A new type CAESAR_TYPE_OVERFLOW_FUNCTION_TABLE_1 was added to "caesar_table_1.h". This new type is used to declare the 10th parameter of CAESAR_CREATE_TABLE_1(), which is now declared as CAESAR_TYPE_OVERFLOW_FUNCTION_TABLE_1 CAESAR_OVERFLOW; instead of void (*CAESAR_OVERFLOW) (); Both forms are equivalent from a type-checking point of view. The explanations regarding the CAESAR_OVERFLOW parameter in the "table_1" manual page have been simplified. * Changes for the memory structure of table_1 items: From now on, padding bytes are automatically inserted before and after the mark field, so that base fields and mark fields are always properly aligned with respect to their alignments constraints specified using the 2nd and 3rd parameters of CAESAR_CREATE_TABLE_1(). This changes a fundamental invariant of the "table_1": the base field and mark field are no longer concatenated, meaning that there may be extra bytes between the last byte of the base field and the first byte of the mark field. The CAESAR_RETRIEVE_B_M_TABLE_1() function can be used to access the mark field. Unfortunately, this change is *not* upward compatible, so that user programs using the "table_1" might need to be modified appropriately. * Other changes: The manual page for caesar_table_1 (which is part of the OPEN/CAESAR reference manual in $CADP/doc/*/Garavel-92-a.*) was updated (and simplified) to reflect all these changes. The "upc" command was modified to remind the users that calls to function CAESAR_CREATE_TABLE_1() might have to be adapted. All the CADP tools using the "table_1" library have been updated to integrate these evolutions. BUG FIX Number: 971 Date: Tue Dec 14 14:10:52 MET 2004 Author: Frederic Lang (INRIA/VASY) Files: com/exp2fc2 Nature: A minor bug in the EXP2FC2 script, which impacted SVL, was fixed. BUG FIX Number: 972 Date: Wed Dec 15 09:41:06 MET 2004 Report: Tomas Barros (INRIA/OASIS, Sophia Antipolis, France) Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2c Nature: If a label in an LTS of the input composition expression would contain special characters, e.g., '"', '%', '\', etc., the C program generated by exp2c would contain errors. This problem was solved. IMPROVEMENT Number: 973 Date: Wed Dec 15 11:21:59 MET 2004 Report: Tomas Barros (INRIA/OASIS, Sophia Antipolis, France) Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2c Nature: The EXP.OPEN tool now issues a warning message when the synchronization of a set of LTSs through a respective set of gates (or labels, depending on the semantics of the parallel composition operator considered) cannot ever happen because one of the LTSs does not contain a transition with the appropriate gate (or label). IMPROVEMENT Number: 974 Date: Wed Dec 15 16:15:30 MET 2004 Authors: Hubert Garavel (INRIA/VASY), Holger Hermanns (Saarland Univ., Germany), Christophe Joubert (INRIA/VASY), Frederic Lang (INRIA/VASY), Radu Mateescu (INRIA/VASY) Files: bin.*/determinator.a, man/*/determinator.* Nature: A new tool named DETERMINATOR was added to the CADP toolbox. This tool provides determinization features for both ordinary LTSs and extended Markovian models containing ordinary, probabilistic and/or stochastic transitions. BUG FIX Number: 975 Date: Thu Dec 16 11:01:51 MET 2004 Report: Thierry Heuillard (France Telecom R&D) Author: Wendelin Serwe (INRIA/VASY) Files: bin.win32/tgv.a Nature: A bug was fixed in the Windows version of TGV: TGV would stop with a segmentation fault after displaying the two lines: > SP initialisation > - SPEC initialised This problem did not occur on Solaris nor Linux. IMPROVEMENT Number: 976 Date: Thu Dec 16 11:09:04 MET 2004 Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: bin.*/tgv.a, man/*/tgv.* Nature: Various improvements were brought to the TGV tool: - It was ported to MacOS X. - It now accepts hiding files with ".hid" suffix (in addition to ".hide"). - It now accepts renaming files with ".ren" suffix (in addition to ".rename"). - The manual page was corrected in several places. Especially, it now makes clear that one should use "-bcg -unparse" options instead of "-aldebaran -unparse". IMPROVEMENT Number: 977 Date: Fri Dec 17 16:41:38 MET 2004 Authors: Nicolas Descoubes, Hubert Garavel, Frederic Lang, Bruno Ondet, and Gordon Pace (INRIA/VASY) Files: bin.*/projector.a, man/*/projector.* Nature: The PROJECTOR 1.0 tool was replaced by a new version 2.0, which introduces the following changes and improvements: - PROJECTOR 2.0 is more efficient than PROJECTOR 1.0. Speedups of up to 4 times have been observed. - Synchronisation sets can now be specified using regular expressions, and using complementation ("all but" operator). - New options ("-gate", "-total", and "-partial") allow to specify whether the regular expressions contained in synchronisation sets must be interpreted as gates, full labels, or label substrings. - The new "-monitor" option allows to open a graphical window to get real-time monitoring information, such as number of states and transitions generated, labels encountered, etc. - PROJECTOR 2.0 is fully compatible with PROJECTOR 1.0, except that interfaces files must now be given in the BCG format, while PROJECTOR 1.0 required the ".aut" format. However, when SVL is used, it will perform such file format conversions automatically whenever necessary. IMPROVEMENT Number: 978 Date: Fri Dec 17 17:01:54 MET 2004 Report: Frederic Tronel (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard, man/*/svl.* Nature: SVL was enhanced to support the new PROJECTOR 2.0 tool: - Following the recent evolution of the PROJECTOR tool, the SVL language was extended to allow abstractions with synchronization on the complement of a set ("sync all but"), and synchronization on labels and gates specified as regular expressions ("gate", "total", and "partial" abstractions). - A new notation was introduced to enable the description of label lists and renaming rule lists using shell variables in hide, rename, abstraction, parallel composition, and LOTOS process invocations. IMPROVEMENT Number: 979 Date: Fri Dec 17 17:13:40 MET 2004 Author: Radu Mateescu (INRIA/VASY) Files: bin.*/libcaesar.a, incl/caesar_solve_1.h, man/*/caesar_solve_1.*, doc/*/Garavel-92-a.* Nature: The OPEN/CAESAR environment was enhanced with a new generic library (named CAESAR_SOLVE_1) for solving boolean equation systems on the fly. A manual page for this library (23 pages) was written. IMPROVEMENT Number: 980 Date: Fri Dec 17 18:39:55 MET 2004 Author: Radu Mateescu (INRIA/VASY) Files: bin.*/bisimulator.a, man/*/bisimulator.* Nature: A new tool named BISIMULATOR was added to the CADP toolbox. This tool allows to check equivalence and preorder relations between LTSs on the fly. IMPROVEMENT Number: 981 Date: Mon Dec 20 15:24:47 MET 2004 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard, man/man.*/svl.* Nature: SVL was extended to support the new BISIMULATOR tool. From now on, BISIMULATOR becomes the default tool (in place of ALDEBARAN) for comparing LTSs and behaviours. As BISIMULATOR works on-the-fly, the default comparison method is now "fly" instead of "std". IMPROVEMENT Number: 982 Date: Tue Dec 21 09:47:41 MET 2004 Authors: Hubert Garavel (INRIA/VASY), Holger Hermanns (Saarland Univ., Germany), and Christophe Joubert (INRIA/VASY) Files: demos/demo_30 Nature: A new demo (Markovian analysis of the Hubble space telescope) was added to the CADP toolbox. IMPROVEMENT Number: 983 Date: Tue Dec 21 12:09:38 MET 2004 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard Nature: SVL now generates extended ".exp" files containing generalized hiding and renaming operators (thus allowing "hide all but" constructs and different matching semantics to be used inside ".exp" files). Such ".exp" files are accepted by EXP.OPEN 2.0. This modification has the advantage to avoid the generation of intermediate BCG graphs. At the same time, on-the-fly reduction of ".exp" files using ALDEBARAN has been removed from SVL, for the following reasons: - ALDEBARAN cannot process these extended ".exp" files; - On-the-fly reduction is generally slower than standard reduction; - On-the-fly reduction does not bring the usual advantages of on-the-fly verification, namely the ability to provide verification verdicts without exploring the entire state space. As a consequence, the four shell variables predefined in SVL DEFAULT_REDUCTION_TOOL_LTS, DEFAULT_REDUCTION_TOOL_EXP, DEFAULT_REDUCTION_METHOD_LTS, and DEFAULT_REDUCTION_METHOD_EXP have been replaced by the variables DEFAULT_REDUCTION_TOOL and DEFAULT_REDUCTION_METHOD. Warning messages are issued at reduction time if one of the former variables is defined. Equivalence and preorder checking of ".exp" files using the ALDEBARAN tool is still supported in SVL. However, such ".exp" files should neither contain hiding nor renaming operators (because ALDEBARAN does not handle them properly). Otherwise, an error message is emitted. In general, the (more efficient) BISIMULATOR tool should be preferred, as it accepts any LTS given using the OPEN/CAESAR "graph module" API, including enhanced ".exp" files. IMPROVEMENT Number: 984 Date: Tue Jan 4 18:26:15 MET 2005 Authors: Christophe Joubert and Radu Mateescu (INRIA/VASY) Files: doc/*/Joubert-Mateescu-04.*, doc/*/Joubert-Mateescu-05.*, doc/=READ_ME.txt, doc/biblio.bib Nature: Two new papers were added in the "doc" directory of the CADP toolbox: - The paper "Joubert-Mateescu-04" describes a method for distributed on-the-fly equivalence checking. - The paper "Joubert-Mateescu-05" presents a distributed on-the-fly resolution algorithm for single block boolean equation systems. BUG FIX Number: 985 Date: Thu Jan 6 14:04:27 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2c Nature: A table overflow error was corrected in EXP.OPEN 2.0, which sometimes caused erroneous results when the graph module explored by EXP.OPEN 2.0 contained less labels than one of the input graphs. BUG FIX Number: 986 Date: Thu Jan 6 15:19:43 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel Nature: A bug was corrected in SVL, which caused erroneous expansion of the "leaf reduction" macro operator. BUG FIX Number: 987 Date: Mon Jan 10 17:00:53 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, svl/src/standard, man/*/svl.* Nature: Three minor bugs were corrected in SVL: - Cleaning after macro operator expansion no longer removes "generation" operators when their operand is a "rename" expression (such a "rename" operator may now be part of a ".exp" file). - The temporary BCG file containing the LTS generated from a ".exp" file is now given a new file name (previously, its name was the same as the ".exp" file by replacing the ".exp" suffix with a ".bcg" suffix). This new scheme avoids clashes between file names. - The SVL_SYNC_TO_HIDE() function defined in "svl/src/standard" was corrected to take into account the fact that ".sync" files may now be begin with either the "Sync" or "sync" keywords. BUG FIX Number: 988 Date: Mon Jan 10 17:18:54 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2c Nature: A minor bug was corrected in EXP.OPEN, which caused a warning message when compiling the C code generated by EXP2C. BUG FIX Number: 989 Date: Mon Jan 17 16:50:11 MET 2005 Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: com/tst Nature: The "tst" shell-script was modified not to emit a spurious warning "*** No license exists for host ..." when the current host name appears to be suffixed by its domain name (for instance, "cadp.inria.fr" instead of "cadp"). IMPROVEMENT Number: 990 Date: Mon Jan 24 16:53:29 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard, man/*/svl.* Nature: The SVL tool has been enhanced with a new "refined abstraction" operator. This operator allows to restrict a behaviour within a parallel composition expression (among other operators) with respect to constraints induced by synchronization with some of its concurrent neighbours. Compared to normal "abstraction", the user does not need to provide a synchronization set, as this set will be built automatically using EXP.OPEN. As a consequence, the synchronization constraints computed in such a way are more precise. IMPROVEMENT Number: 991 Date: Thu Jan 27 16:33:43 MET 2005 Authors: Damien Bergamini, Adrian Curic, Nicolas Descoubes, Hubert Garavel, Christophe Joubert, Radu Mateescu, Irina Smarandache-Sturm, and Gilles Stragier (INRIA/VASY) Files: bin.*/distributor.a, bin.*/bcg_merge, src/monitor/READ_ME, src/monitor/distributor.tcl, man/*/distributor.*, man/*/bcg_merge.* Nature: Two new tools named DISTRIBUTOR and BCG_MERGE have been added to the CADP toolbox. These tool allow distributed state space generation on a network of workstations or a cluster of PCs. IMPROVEMENT Number: 992 Date: Tue Feb 1 15:11:24 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard, man/*/svl.* Nature: The semantics of SVL meta-operations, in particular "leaf" and "node reduction", was improved. Expansion of these operations now distributes "reduction" across "generation", "abstraction", and "refined abstraction". The cleaning function was also modified accordingly. Additionally, "node reduction" now distributes hiding operators as far as possible towards the leaves, in order to allow better reductions of intermediate state spaces. IMPROVEMENT Number: 993 Date: Tue Feb 1 16:16:55 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2c, com/exp.open, man/*/exp.open.* Nature: A new "-labels" option was added to EXP.OPEN. Given as input a network of communicating automata (".exp" file), this option displays on the standard output all labels that might occur in the LTS generated from this network, assuming that all the synchronizations are possible. IMPROVEMENT Number: 994 Date: Wed Feb 2 08:39:35 MET 2005 Author: Radu Mateescu (INRIA/VASY) Files: bin.*/evaluator.*, man/*/evaluator.* Nature: An enhanced version of the EVALUATOR on-the-fly model checker was installed in the CADP toolbox. The new version 3.5 of EVALUATOR supersedes the former version 3.0 still remaining fully compatible with it. The main differences between both versions are the following: - EVALUATOR 3.5 uses the resolution algorithms provided by the CAESAR_SOLVE library (see item #979 above) whereas EVALUATOR 3.0 contained an ad hoc resolution engine. This improves the modularity by clearly separating the translation of the verification problem (done in EVALUATOR) from the resolution (done in CAESAR_SOLVE). - The analysis of regular alternation-free mu-calculus formulas is enhanced with the detection of formulas that lead to disjunctive or conjunctive boolean equation systems. These systems can be solved more efficiently using algorithm A4 of CAESAR_SOLVE, which does not keep in memory the dependencies between boolean variables. Since most of the formulas encountered in practice are of this type, this enhancement results in important memory reductions (proportional to the number of transitions in the graph under verification) w.r.t. EVALUATOR 3.0. - Another optimization, performed on the system of modal equations used as intermediate representation by EVALUATOR, consists in expanding on-line the propositional variables that occur only once in the right-hand side of an equation. On most practical examples, this reduces by a factor of 3 the number of variables and induces the same reduction on the time and memory necessary for resolution. - The generation of diagnostics (examples and counterexamples) is improved in order to reflect more accurately the structure of the temporal formulas. In the diagnostics produced by EVALUATOR 3.0, each state was associated to a state of the graph being checked, which caused the duplication of transitions in the diagnostic. For instance, when evaluating the formula ``<A.A.A> true'' on the graph consisting of a single A-loop ``S --A--> S'', the diagnostic produced by EVALUATOR 3.0 was the graph with a single state S and three A-loop transitions attached to S. To the contrary, the diagnostics produced by EVALUATOR 3.5 is the sequence ``S1 --A--> S2 --A--> S3 --A--> S4'', which is a better explanation that the formula requires to traverse three successive A-transitions. - Several new command-line options were added to EVALUATOR 3.5 to benefit from all features of CAESAR_SOLVE, namely: use of the breadth-first search based algorithm A2 to produce small-depth diagnostics ("-bfs" option, with its dual "-dfs" option), use of the memory-efficient algorithm A3 to check properties on acyclic graphs ("-acyclic"), and possibility to display the underlying boolean equation system in a textual form ("-bes"). Also, the manual page for EVALUATOR was updated. IMPROVEMENT Number: 995 Date: Thu Feb 10 11:13:57 MET 2005 Report: Tomas Barros (INRIA/OASIS, Sophia-Antipolis, France) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: bin.iX86/* Nature: The CADP binaries have been ported to Linux Fedora Core 3 (they no longer make a segmentation fault error when being run on this recent version of Linux). IMPROVEMENT Number: 996 Date: Fri Feb 11 16:44:38 MET 2005 Author: Frederic Lang and Radu Mateescu (INRIA/VASY) Files: bin.*/bisimulator.a, man/*/bisimulator.*, bin.*/svl_kernel, src/svl/standard, man/*/svl.* Nature: The BISIMULATOR tool was enhanced with comparisons modulo two new equivalence relations and their associated preorders: trace equivalence (option "-trace") and weak trace equivalence (option "-weaktrace"), which considers only visible transitions. The generation of counterexamples for these equivalences and their preorders was also implemented. These equivalence relations have been also added to the SVL language. They are implemented as follows: - Comparisons modulo these equivalences are done by invoking BISIMULATOR with options "-trace" and "-weaktrace". - Reductions modulo these equivalences are done in two steps. First, DETERMINATOR is invoked to eliminate non-determinism (and, for weak trace reduction only, tau-transitions using the "-tauclosure" option). Second, BCG_MIN is used to merge equivalent states modulo strong bisimulation. IMPROVEMENT Number: 997 Date: Wed Feb 16 14:24:08 MET 2005 Report: Samson Bisaro (Universite Henri Poincare, Nancy, France) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: com/tst Nature: The "tst" shell-script was enhanced to detect whether the GR-security extensions are installed in the Linux kernel and, if so, to emit a warning message (as the CADP tools may face problems in this case). The "tst" shell-script was also enhanced to identify Fedora Core distributions and to display their version number. IMPROVEMENT Number: 998 Date: Fri Feb 18 11:47:45 MET 2005 Authors: Hubert Garavel (INRIA/VASY), Holger Hermanns (Saarland Univ.), Radu Mateescu (INRIA/VASY), Christophe Joubert (INRIA/VASY), and David Champelovier (INRIA/VASY) Files: demos/demo_31 Nature: A new demo example (SCSI-2 bus arbitration protocol) was added. This demo illustrates major topics, such as formal modelling of hardware protocols, compositional state space generation, model checking of mu-calculus formulas, and performance evaluation combined with functional verification. This demo example is presented in an FME'02 paper by Garavel and Hermanns (see doc/*/Garavel-Hermanns-02.pdf). IMPROVEMENT Number: 999 Date: Fri Feb 18 12:04:16 MET 2005 Author: Radu Mateescu (INRIA/VASY) Files: demos/demo_34 Nature: A new demo (Computer Integrated Manufacturing architecture) was added to the CADP toolbox. BUG FIX Number: 1000 Date: Tue Feb 22 17:26:15 MET 2005 Report: Christophe Joubert (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/bcg_info Nature: A bug was fixed in BCG_INFO. Due to a numerical overflow, BCG_INFO could abort with a segmentation fault when invoked on large models with its "-nondeterministic" option, as in: bcg_info -nondeterministic - vasy_6020_19353.bcg where vasy_6020_19353.bcg is an element of the VLTS benchmark suite. BUG FIX Number: 1001 Date: Wed Feb 23 11:01:23 MET 2005 Authors: Frederic Perret and David Champelovier (INRIA/VASY) Files: bin.*/ocis.a Nature: Many issues have been fixed in the OCIS simulator: - The new version of OCIS correctly displays deadlock states. - The menus of OCIS' main window have been improved. - When EXHIBITOR is running, the "OK" button of the OCIS window from which EXHIBITOR was launched is desactivated, so that two instances of EXHIBITOR cannot be launched at the same time. - The BCG files containing the scenarios stored by OCIS have been made smaller: they no longer contain so-called "unexplored" transitions; this change is upward compatible in the sense that the new version of OCIS can reload the scenarios stored by both the old and new version of OCIS. - The file selection window was improved in several ways: all clicks on the "Save" button are now ignored until a file name is selected; when a scenario save operation fails (i.e., because the current directory or the BCG file is write-protected), the interface now reacts properly; navigation in directories now works correctly when loading and saving scenarios, sequence files, PostScript files, etc.; when saving a PostScript file, a ".ps" suffix is now added automatically if not already present; when saving a sequence tree, a ".seq" suffix is now added automatically if not already present; when quitting, OCIS no longer proposes to store the current scenario if this one is unmodified. BUG FIX Number: 1002 Date: Thu Feb 24 13:01:12 MET 2005 Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.*/ocis.a Nature: More improvements have been brought to the OCIS simulator: - A bug was fixed: when launching EXHIBITOR from OCIS on a ".seq" file several times, the first launch would execute properly, but the next launches would face an issue: the pathname of the ".seq" file was an absolute one, which prevented to start a new search; from now on, only the basename of this file is displayed, which solves the problem. - OCIS was ported to MacOS X. A bug was fixed in the MacOS X version of OCIS: the communication protocol between C and Tcl would emit error messages of the form "Wrong parameter format". - On MacOS X, the "$CADP/src/com/cadp_x11" script is now invoked automatically, so as to start the X11 environment if not already running. BUG FIX Number: 1003 Date: Thu Feb 24 16:23:25 MET 2005 Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: bin.*/libcaesar.a, man/*/caesar_hash.*, doc/*/Garavel-92-a.* Nature: The "hash" library of OPEN/CAESAR was enhanced in several ways: - The CAESAR_1_HASH() function was modified so as to return the same results as the s_hash() function of SPIN when given identical input parameters. - The CAESAR_1_HASH() function was corrected so that it no longer reads bytes outside of the memory zone to be hashed. - The CAESAR_2_HASH() function was modified so as to return the same results as the d_hash() function of SPIN when given identical input parameters. - The CAESAR_2_HASH() function was corrected so that it no longer reads bytes outside of the memory zone to be hashed. - The CAESAR_6_HASH() function was entirely rewritten; the previous version could cause a segmentation fault error and could return different results depending on the memory alignment of the memory zone to be hashed. - Three new functions CAESAR_7_HASH(), CAESAR_STATE_7_HASH(), and CAESAR_LABEL_7_HASH() have been added. These functions are inspired from those of Bob Jenkins in SPIN 4.2.2. BUG FIX Number: 1004 Date: Fri Feb 25 14:10:06 MET 2005 Report: Benjamin Fontan (ENSICA, Toulouse, France) Author: Hubert Garavel (INRIA/VASY) Files: bin.iX86/* Nature: A license problem with Linux laptops was solved. This problem occurred when these laptops were booted on a local area network and then disconnected from the network, or vice-versa. IMPROVEMENT Number: 1005 Date: Mon Feb 28 19:04:47 MET 2005 Authors: Frederic Lang, Radu Mateescu, and Hubert Garavel (INRIA/VASY) Files: demos/demo_01, demos/demo_02, demos/demo_03, demos/demo_07, demos/demo_08, demos/demo_09, demos/demo_10, demos/demo_11, demos/demo_14, demos/demo_16, demos/demo_17, demos/demo_20, demos/demo_24, demos/demo_25, demos/demo_26, demos/demo_28, demos/demo_29, demos/demo_32, demos/demo_33 Nature: Many CADP demos have been adapted to use the new BISIMULATOR tool rather than ALDEBARAN. This was done by modifying the "=READ_ME.txt" and "demo.svl" files only. IMPROVEMENT Number: 1006 Date: Thu Mar 3 12:32:49 MET 2005 Authors: Damien Bergamini, Hubert Garavel, and Radu Mateescu (INRIA/VASY) Files: src/eucalyptus Nature: The EUCALYPTUS user-interface was updated so as to reflect the recent evolutions of CADP: - In the "Options" menu, a "Bisimulator" entry was added, which allows to enable the "-stat" option of BISIMULATOR and to choose the name of the Boolean Equation System file produced by BISIMULATOR. - In the "CAESAR and CAESAR.ADT" sub-menu of the "Options" menu, the semantics of "Optimization E7" was modified to take into account the changes in the "-e7" option of CAESAR (see above item #926). - In the contextual menu for ".lotos" and ".LOTOS" files, a "Compare" entry was added, which invokes BISIMULATOR. - In the contextual menu for ".bcg" files, an "Evaluate performance..." entry was added, which invokes the BCG_STEADY and BCG_TRANSIENT tools. - The "Help" menu of EUCALYPTUS was updated with the new tools recently added in CADP. The help page for the obsolete Des2Aut tool was removed. BUG FIX Number: 1007 Date: Thu Mar 3 16:14:59 MET 2005 Report: Ken Turner (University of Stirling, Scotland, UK) Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar.adt Nature: A bug was fixed in the C code generated by CAESAR.ADT for constant operations: when a constant operation F1 was defined using a non-constructor operation F2, and when the definition of F2 contained an occurrence of some other constant operation F3, a dependence between F1 and F3 would exist. From now on, CAESAR.ADT properly detects the existence of "recursive" constants (e.g., when F1 and F3 are identical) and rejects them with an explicit error message. Also, the C code generated by CAESAR.ADT now properly orders the definitions of constants to avoid using a constant before it is assigned. IMPROVEMENT Number: 1008 Date: Thu Mar 3 17:28:39 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard, man/*/svl.* Nature: To compute the graph of a parallel composition expression, SVL may now automatically use the partial order reduction features of EXP.OPEN ("-branching" and "-ratebranching" options). The use of partial order reduction depends on the context in which the parallel composition expression occurs: - If the parallel composition expression occurs in the context of a "stochastic branching reduction", then the "-ratebranching" option of EXP.OPEN is used . - If the parallel composition expression occurs either in the interface part of an "abstraction" operator, or in the context of a "reduction" or "comparison" modulo an equivalence relation that is weaker or equal to branching equivalence (i.e., observational, tau*.a, safety, or weak trace), then the "-branching" option of EXP.OPEN is used. IMPROVEMENT Number: 1009 Date: Mon Mar 14 11:24:40 MET 2005 Author: Hubert Garavel (INRIA/VASY) Files: bin.win32/libm.a, bin.win32/libcaesar.a, incl/bcg_standard.h incl/caesar_system.h, incl/caesar_standard.h, Nature: A new include file named "caesar_system.h" was added, which gathers OS-specific definitions previously contained in file "caesar_standard.h" and "bcg_standard.h", such as system(), popen(), and pclose(). On Windows, such functions are no longer contained in the "bin.win32/libcaesar.a" library (since they are useful to both BCG and OPEN/CAESAR tools) but in the `fake' "bin.win32/libm.a" library. This change should be transparent to most users. IMPROVEMENT Number: 1010 Date: Mon Mar 14 12:35:39 MET 2005 Authors: David Champelovier, Hubert Garavel, and Frederic Lang (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.adt, bin.*/caesar.indent, exp2c, mcl_expand, svl_kernel, xtl Nature: The CAESAR, CAESAR.ADT, CAESAR.INDENT, EXP2C, MCL_EXPAND, SVL, and XTL compilers have been enhanced so as to support 8-bit characters in source files. IMPROVEMENT Number: 1011 Date: Fri Mar 18 11:28:59 MET 2005 Authors: Frederic Perret, David Champelovier, Radu Mateescu, and Hubert Garavel (INRIA/VASY) Files: bin.*/ocis.a Nature: The OCIS interactive simulator was improved: from now on, it can re-read a simulation scenario contained in a BCG graph and reply this scenario during the current simulation session. Typically, the BCG graph can be either a simulation scenario previously explored and saved using OCIS, or an execution trace produced by EXHIBITOR or EXECUTOR, or a diagnostic generated by EVALUATOR for a temporal logic property. To do so, OCIS needs to decide whether this BCG graph is a subset or not of the graph being explored during the current OCIS session. This amounts to checking graph inclusion modulo the preorder associated to strong equivalence; if so, a diagnostic is generated, which can be subsequently read and replayed by OCIS as an ordinary simulation scenario. This is done by invoking BISIMULATOR and DETERMINATOR from OCIS automatically. BUG FIX Number: 1012 Date: Wed Mar 23 11:22:41 MET 2005 Report: Judi Romijn (Technical Univ. of Eindhoven, The Netherlands) Author: David Champelovier (INRIA/VASY) Files: src/monitor/distributor.tcl Nature: A bug was fixed in the real-time monitoring window of the DISTRIBUTOR tool (this window is created by giving the "-monitor" option to DISTRIBUTOR). On large examples, DISTRIBUTOR could emit the following error messages: > bgerror failed to handle background error. > Original error: too many nested evaluations (infinite loop?) > ... <snip> > fatal error on master node (Exit requested by user) > Closing pipe to monitor BUG FIX Number: 1013 Date: Wed Mar 23 11:55:43 MET 2005 Report: Christophe Joubert (INRIA/VASY) Author: David Champelovier (INRIA/VASY) Files: src/monitor/distributor.tcl Nature: A bug was fixed in the real-time monitoring window of the DISTRIBUTOR tool. When the graph under generation became large, the progression bars in the "Progress" tab of the monitoring window would block after a certain time. This was due to an arithmetic overflow problem, which was solved by replacing integer numbers with floating-point numbers. IMPROVEMENT Number: 1014 Date: Thu Mar 24 10:36:03 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: com/exp.open, bin.*/exp2c, man/*/exp.open.* Nature: A new "-info" option was added to the EXP.OPEN tool. This option displays information about the LTSs referenced in the input composition expression, using the bcg_info tool. IMPROVEMENT Number: 1015 Date: Thu Mar 24 10:45:40 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: demos/demo_35, demos/demo_36 Nature: Two new demo examples have been added to the CADP toolbox: - demo_35 features a distributed summation algorithm using the "n among m" synchronization operator proposed by H. Garavel and M. Sighireanu in 1999. - demo_36 features a distributed Erathostenes sieve, which is verified using compositional verification and partial order reduction BUG FIX Number: 1016 Date: Thu Mar 24 15:09:39 MET 2005 Report: Gregory Batt (INRIA Rhone-Alpes/HELIX), Ludovic Apvrille (ENST, Sophia-Antipolis, France), and Dave Parker (Univ. of Birmingham, UK) Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: src/installator/installator.tcl Nature: A bug was fixed in the INSTALLATOR assistant, which would sometimes freeze when or after performing FTP transfers. In the log file, this bug produced the following error message: > too many nested calls to Tcl_EvalObj (infinite loop?) > (procedure "Trace" line 9) > invoked from within > ... > "DisplayMsg "C: 421 Service not available, closing > control connection." > ... BUG FIX Number: 1017 Date: Fri Mar 25 16:06:22 MET 2005 Report: Gwen Salaun (INRIA/VASY) Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar Nature: A bug was fixed in optimization U2 of CAESAR. Under some rare circumstances, this optimization could merge two concurrent units into one single sequential unit. IMPROVEMENT Number: 1018 Date: Fri Mar 25 16:46:15 MET 2005 Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: incl/caesar_table_1.h, bin.*/libcaesar.a man/*/caesar_table_1.* doc/*/Garavel-92-a.* Nature: The "caesar_table_1" library of OPEN/CAESAR was modified so as to increase its maximal capacity from (2^24)-1 elements up to 2^29 elements. This change increases the memory size of a table, but in a reasonable manner. In particular, the constant CAESAR_NULL_INDEX_TABLE_1 was modified: its value changed from 16777215 to -1. Consequently, all OPEN/CAESAR applications using the include file "caesar_table_1.h" should be recompiled to take into account the new value of CAESAR_NULL_INDEX_TABLE_1. This does not preserve binary compatibility, since a ".o" or ".a" file produced with any version of CADP older or equal to CADP 2003-y can not be used with the "libcaesar.a" library provided in a version of CADP equal or newer to CADP 2003-z. IMPROVEMENT Number: 1019 Date: Tue Mar 29 19:02:17 MEST 2005 Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2c Nature: The implementation of the CAESAR_ITERATE_STATE() function provided by EXP.OPEN was modified, which reduces execution time with a negligible memory overhead. For instance, reachability analysis becomes 1.26 times faster for demo_20 and 1.36 times faster for demo_35. IMPROVEMENT Number: 1020 Date: Wed Mar 30 09:45:43 MEST 2005 Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: bin.win32/*, src/windows/*, src/com/cadp_cc Nature: The Windows binaries of CADP tools have been modernized. Previously, these binaries were compiled against Microsoft's CRTDLL library, which is now more or less deprecated. From now on, these binaries are compiled against Microsoft's MSVCRT library. Precisely: - The "cadp_cc" shell-script was modified to compile against MSVCRT instead of CRTDLL. - The directory "src/windows" was removed. - The Mingwin libraries used to compile the CADP tools have been upgraded to mingw-runtime-3.7 and w32api-3.2. BUG FIX Number: 1021 Date: Tue Apr 5 12:51:09 MEST 2005 Report: Frederic Lang (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: com/bcg_edit Nature: A bug was fixed in the BCG_EDIT tool. When the environment variable $PRINTER would contain white spaces (for instance, "Microsoft Office Document Image Writer"), BCG_EDIT would emit an error message "test: too many arguments". A similar problem was fixed for environment variable $CADP_PS_VIEWER. IMPROVEMENT Number: 1022 Date: Thu Apr 7 12:22:41 MEST 2005 Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: bin.*/caesar.new, doc/*/Garavel-Serwe-04.* Nature: A prototype version of CAESAR (named CAESAR.NEW) was added to the CADP toolbox. This prototype version implements the state space reductions described in a recent paper by Garavel and Serwe (see doc/*/Garavel-Serwe-04.*). Eventually, the features provided by CAESAR.NEW will be integrated into the "official" version of CAESAR. In the meantime, it is possible to use CAESAR.NEW in place of CAESAR by typing the following shell commands: $ cd $CADP/bin.`$CADP/com/arch` $ mv caesar caesar#6.2 $ mv caesar.new caesar BUG FIX Number: 1023 Date: Wed Apr 13 18:31:25 MEST 2005 Report: Howard Bowman (University of Kent at Canterbury, UK) Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.adt, bin.*/caesar.new Nature: Two minor problems were fixed in the C code generated by CAESAR and CAESAR.ADT. This C code was not fully compliant to ISO C, so that recent C compilers would emit two warnings: > warning: old-style declaration or incorrect type for: main and > warning: implicit function declaration: exit BUG FIX Number: 1024 Date: Fri Apr 15 10:26:04 MEST 2005 Report: Frederic Lang (INRIA/VASY) Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: src/monitor/distributor.tcl Nature: The real-time monitoring window of DISTRIBUTOR (which is created using the "-monitor" option of DISTRIBUTOR) did not work on Windows. This problem was solved. BUG FIX Number: 1025 Date: Thu Apr 21 17:29:48 MEST 2005 Report: Husain Aljazzar (University of Konstanz, Germany), Holger Hermanns (Saarland University, Germany) Author: David Champelovier (INRIA/VASY) Files: bin.*/bcg_transient Nature: When invoked with a list of several "time instants" given on the command-line, BCG_TRANSIENT could produce incorrect numerical results (transition throughputs) for one or several instants located at the end of the list. This issue was fixed. IMPROVEMENT Number: 1026 Date: Tue May 17 18:11:59 MEST 2005 Author: Frederic Lang (INRIA/VASY) Files: demos/demo_35 Nature: The demo_35 (distributed summation algorithm) was entirely rewritten. The network topology is now properly isolated in the data type part (it is defined using a "neighbourhood" function). IMPROVEMENT Number: 1027 Date: Fri May 20 13:33:39 MEST 2005 Author: Radu Mateescu (INRIA/VASY) Files: doc/*/Bergamini-Descoubes-Joubert-Mateescu-05.* Nature: A new paper on BISIMULATOR was added to the CADP toolbox. In particular, this paper provides a performance comparison between ALDEBARAN and BISIMULATOR. BUG FIX Number: 1028 Date: Wed Jun 22 11:17:14 MEST 2005 Report: Hubert Garavel (INRIA/VASY) Author: David Champelovier (INRIA/VASY) Files: bin.*/src/com/cadp_cc Nature: Two minor problems were fixed in the Windows version of CADP: CAESAR.ADT and CAESAR would regenerate ".h" and ".c" files systematically, even if the source LOTOS file did not change. This was not time-effective. One problem was caused by the stat() function of Mingwin that does not recognize Cygwin's mount points, such as the fact that "/usr/lib" is mounted on "/lib", and thus would conclude that include files located in "/usr/lib" did not exist, thus forcing recompilation. This problem was solved by modifying the "-datation" option of the "cadp_cc" shell-script. Another problem was that some error messages of the GCC compiler were unduly understood as file dependencies, thus forcing recompilation. Again, the "cadp_cc" shell-script was corrected. IMPROVEMENT Number: 1029 Date: Fri Jun 24 15:41:32 MEST 2005 Report: Husain Aljazzar (Univ. of Konstanz, Germany) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.new Nature: The C code generated by CAESAR using "-open" option was slightly modified (namely, the declaration of the functional parameter CAESAR_LOOP of function CAESAR_ITERATE_STATE was made more accurate) so that this C code can now be processed by the "protoize" tool. IMPROVEMENT Number: 1030 Date: Fri Jun 24 16:04:23 MEST 2005 Authors: Frederic Lang and Wendelin Serwe (INRIA/VASY) Files: bin.*/projector.a Nature: The hash function associated to a hash table in PROJECTOR was modified to improve its dispersion. This makes PROJECTOR much faster when many labels are identical up to character permutations. IMPROVEMENT Number: 1031 Date: Fri Jun 24 16:57:29 MEST 2005 Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard Nature: SVL now minimizes the interfaces given to the PROJECTOR 2.0 tool modulo branching bisimulation before safety equivalence, so as to minimize large interfaces in a faster way. IMPROVEMENT Number: 1032 Date: Fri Jun 24 19:23:16 MEST 2005 Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.win32/distributor.a Nature: A problem was fixed in the Windows version of DISTRIBUTOR. When the SFU (Microsoft's Services for Unix) software was installed, DISTRIBUTOR would not work properly because the Unix commands contained in C:\SFU would take precedence over the Unix commands provided by Cygwin. This would generate an error message of the form: > This command is not supported. Please type help for further and DISTRIBUTOR would stop. IMPROVEMENT Number: 1033 Date: Mon Jul 18 16:34:05 MEST 2005 Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: bin.*/caesar.adt, bin.*/caesar, bin.*/caesar.new Nature: From now on, when a ".h" file (resp., a ".f" or a ".t" file) does not start with the special macro-definition #define CAESAR_ADT_EXPERT_H ... (resp. CAESAR_ADT_EXPERT_F or CAESAR_ADT_EXPERT_T), CAESAR and CAESAR.ADT will emit a warning that this macro-definition is missing. In such case, the default CAESAR.ADT version number will be 5.2 instead of 4.1 (which means that one assumes that the ".h", ".f", or ".t" file was written for version 5.2 of CAESAR.ADT rather than for version 4.1, which lasted from 1993). IMPROVEMENT Number: 1034 Date: Mon Sep 5 16:12:02 MEST 2005 Authors: Frederic Lang and Hubert Garavel (INRIA/VASY) Files: demo_37 Nature: A new demo example was added: the ODP (Open Distributed Processing) trader. IMPROVEMENT Number: 1035 Date: Tue Sep 6 18:20:19 MEST 2005 Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: src/exec_caesar/main.c, demos/demo_19/main.c, demos/demo_19/driver.c, demos/demo_19/gate_functions.c, demos/demo_19/start Nature: The "main.c" file containing the entry point of EXEC/CAESAR was enhanced. The main() function can now accept an optional argument that, if present, will be the file name to which the transitions will be logged as they are executed. If this argument is absent, no logging will take place. If this parameter is equal to "-", then logging will take place on the standard output. The source files of demo_19 were adapted accordingly. The "main.c" program of demo_19 was removed, as it is now subsumed by the enhanced file "src/exec_caesar/main.c. The "driver.c" program and the "start" shell-script were also simplified. Finally, file "driver.c" was renamed into "gate_functions.c". IMPROVEMENT Number: 1036 Date: Wed Sep 7 14:37:13 MEST 2005 Authors: Frederic Lang, Gwen Salaun and Wendelin Serwe (INRIA/VASY) Files: doc/*/Lang-05.*, doc/*/Salaun-Serwe-05.*, doc/=READ_ME.txt, doc/biblio.bib Nature: Two new papers were added in the "doc" directory of the CADP toolbox: - The paper "Lang-05" presents the principles and the main functionalities of the EXP.OPEN 2.0 tool. - The paper "Salaun-Serwe-05" discusses translation issues between the hardware process algebra CHP and LOTOS. IMPROVEMENT Number: 1037 Date: Fri Sep 9 17:56:40 MEST 2005 Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: incl/caesar_kernel.h, demos/demo_19/gate_functions.c Nature: In the standard EXEC/CAESAR include file "caesar_kernel.h", four macro definitions have been added: CAESAR_KERNEL_ASSERT_EOL(), CAESAR_KERNEL_ASSERT_INPUT(), CAESAR_KERNEL_ASSERT_OUTPUT(), CAESAR_KERNEL_ASSERT_TYPE() These macros are useful to check the arguments passed to EXEC/CAESAR gate functions. The "gate_functions.c" file of demo_19 was modified to take advantage of these new macros. IMPROVEMENT Number: 1038 Date: Fri Sep 9 18:49:56 MEST 2005 Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: demos/demo_38 Nature: A new demo was added: it features the LOTOS description of an asynchronous hardware architecture implementing the DES (Data Encryption Standard). The demo illustrates two key points: the compositional verification of the control part of this architecture, and rapid prototyping by C code generation using EXEC/CAESAR. IMPROVEMENT Number: 1039 Date: Mon Sep 12 15:17:16 MEST 2005 Author: Radu Mateescu (INRIA/VASY) Files: demos/demo_39 Nature: A new demo was added: it features the LOTOS description of a turntable system for drilling products. The demo illustrates both functional verification (model checking) and performance evaluation. BUG FIX Number: 1040 Date: Mon Sep 12 19:25:04 MEST 2005 Report: Alexandre Mota (Univ. Federal de Pernambuco, Recife, Brazil) Author: Hubert Garavel (INRIA/VASY) Files: com/tst Nature: On RedHat Linux version 3WS, the "tst" shell-script would emit an incorrect warning: > *** The CADP software might not work correctly on RedHat 3WS > ==> Please upgrade to RedHat 6.0 or higher This erroneous message was removed. BUG FIX Number: 1041 Date: Mon Sep 19 17:45:37 MEST 2005 Report: Jaco van de Pol (CWI, Amsterdam, The Netherlands) Author: Frederic Lang (INRIA/VASY) Files: com/exp.open, bin.*/exp2c Nature: Two bugs were fixed in Exp.Open: - The -mcrl option was not recognized due to a mistake in the "com/exp.open" command. - While generating a synchronization label file for Projector ("-interface" option), Exp.Open assumed erroneously that the hidden action was systematically written "i". Thus, when written differently, the hidden action was considered by Projector as synchronizable, which led to wrong behaviours. IMPROVEMENT Number: 1042 Date: Thu Sep 22 11:54:27 MEST 2005 Author: Radu Mateescu (INRIA/VASY) Files: bin.*/libcaesar.a, incl/caesar_solve_1.h, man/*/caesar_solve_1.*, doc/*/Garavel-92-a.* Nature: The interface of the CAESAR_SOLVE library of OPEN/CAESAR was enhanced with several new types and functions, which facilitate the creation of boolean equation systems: - The enumerated type CAESAR_TYPE_BLOCK_SIGN_SOLVE_1 consists of the two constant values CAESAR_MINIMAL_FIXED_POINT_SOLVE_1() and CAESAR_MAXIMAL_FIXED_POINT_SOLVE_1() denoting the sign of an equation block (minimal or maximal fixed point). - The enumerated type CAESAR_TYPE_VARIABLE_KIND_SOLVE_1 consists of the two constant values CAESAR_DISJUNCTIVE_VARIABLE_SOLVE_1() and CAESAR_CONJUNCTIVE_VARIABLE_SOLVE_1() denoting the kind of a boolean variable (disjunctive or conjunctive). - The following types CAESAR_TYPE_BLOCK_SIGN_FUNCTION_SOLVE_1 CAESAR_TYPE_VARIABLE_KIND_FUNCTION_SOLVE_1 CAESAR_TYPE_AREA_FUNCTION_SOLVE_1 CAESAR_TYPE_BOOLEAN_FUNCTION_SOLVE_1 CAESAR_TYPE_NATURAL_FUNCTION_SOLVE_1 denote pointers to functions with various profiles, which occur as arguments of the CAESAR_CREATE_SOLVE_1() function. BUG FIX Number: 1043 Date: Fri Sep 23 16:33:51 MEST 2005 Author: Radu Mateescu (INRIA/VASY) Files: bin.*/libcaesar.a Nature: A bug was corrected in the breadth-first resolution algorithm of the CAESAR_SOLVE library. In some cases, the error caused a loss of information in the diagnostic generated by this algorithm. IMPROVEMENT Number: 1044 Date: Tue Sep 27 15:12:55 MEST 2005 Author: Radu Mateescu (INRIA/VASY) Files: bin.*/libcaesar.a, man/*/caesar_solve_1.*, doc/*/Garavel-92-a.* Nature: A new on-the-fly resolution algorithm, named A5, was added to the CAESAR_SOLVE boolean resolution library of OPEN/CAESAR. Similarly to algorithm A0 already present in the library, algorithm A5 is based upon a depth-first search of the dependency graph between boolean variables and is able to solve general equation blocks (containing any combinations of disjunctions and conjunctions in the right hand sides of the equations). Algorithm A5 is optimized to perform a faster detection of examples (resp. counterexamples) in maximal (resp. minimal) fixed point equation blocks. This detection is based upon a generalization of Tarjan's algorithm for computing strongly connected components. Algorithm A5 proves to be much faster (between one and two orders of magnitude) than all the other algorithms of CAESAR_SOLVE when it is invoked many times on the same equation block (e.g., for detecting tau-confluent or redundant transitions during the on-the-fly reductions). IMPROVEMENT Number: 1045 Date: Wed Sep 28 12:31:44 MEST 2005 Report: Tomas Barros (INRIA/OASIS, Sophia-Antipolis, France) Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2c, man/*/exp.open.* Nature: Exp.Open now allows to write labels containing special characters, such as double quotes. To this aim, labels may contain escape character sequences such as '"' or '', following the definition of character constants of the ANSI C specification. IMPROVEMENT Number: 1046 Date: Thu Sep 29 13:30:25 MEST 2005 Report: Tomas Barros (INRIA/OASIS, Sophia-Antipolis, France) Author: Frederic Lang (INRIA/VASY) Files: com/exp.open, bin.*/exp2c, man/*/exp.open.* Nature: When some LTS of an Exp.Open composition expression was in a format other than BCG (i.e., ALDEBARAN, FC2, or SEQ), Exp.Open did translate this LTS into BCG automatically, by calling the bcg_io tool. Doing this, labels were parsed as explained in the bcg_write manual page. This prevented using labels whose syntax does not fulfill the BCG conventions. To palliate this limitation, a new -unparse option was added, which turns label parsing off. IMPROVEMENT Number: 1047 Date: Fri Oct 7 13:27:11 MEST 2005 Author: Gwen Salaun (INRIA/VASY) Files: doc/*/Chirichiello-Salaun-05.* Nature: A new paper related to the use of CADP for the verification of Web services was added to the CADP toolbox. BUG FIX Number: 1048 Date: Mon Oct 10 10:18:21 MEST 2005 Report: Radu Mateescu (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: demos/demo_24/demos.svl, demos/demo_31/demo.svl, demos/demo_39/demo.svl Nature: Three SVL scripts called the SVL_RECORD_FOR_CLEAN() macro (defined in "src/svl/standard") using regular expressions as arguments, instead of plain filenames as required. This bug was fixed. IMPROVEMENT Number: 1049 Date: Mon Oct 10 16:28:25 MEST 2005 Authors: Frederic Lang and Radu Mateescu (INRIA/VASY) Files: src/open_caesar/reductor.c, src/open_caesar/reductor3.c, bin.*/reductor.a, man/*/reductor.* Nature: The new version 4.0 of Reductor was released. The archive file "bin.*/reductor.a" of the CADP toolbox replaces the source file "src/open_caesar/reductor.c", which was archived in a new file named "src/open_caesar/reductor3.c". As before, Reductor 4.0 still allows to eliminate all invisible transitions on-the-fly (-taustar option) by merging the source and target states of every invisible transition. Reductor 4.0 also has the following new features: - In addition to invisible transitions, Reductor 4.0 allows to eliminate also some nondeterministic transitions that are irrelevant as regards safety equivalence (-safety option). - Reductor 4.0 allows to compute the minimal quotient of the graph (-minimal option) modulo either strong bisimulation (-strong option), tau*.a bisimulation (-taustar option), and safety equivalence (-safety option). Reductor 4.0 also allows to display the equivalence classes of the quotient (-class option). As in Bisimulator, state equivalence checking is implemented using the efficient "caesar_solve_1" library (solving Boolean Equation Systems). Moreover, the closure algorithm used to eliminate invisible transitions (tau*.a and safety reductions) is faster than in earlier versions. The Reductor manual page was updated. IMPROVEMENT Number: 1050 Date: Thu Oct 13 18:05:22 MEST 2005 Authors: Hubert Garavel, Bruno Ondet, and Wendelin Serwe (INRIA/VASY) Files: bin.*/libcaesar.a, man/*/caesar_table_1.*, doc/Garavel-92-a.* Nature: The implementation of the "table_1" module of the OPEN/CAESAR library was enhanced in three ways so as to reduce its memory cost (especially for tables containing a little number of items): - Depending on the size of base fields, the actual value given to the CAESAR_LIMIT_SIZE parameter of CAESAR_CREATE_TABLE_1() (or the default value given to CAESAR_LIMIT_SIZE when the actual value specified by the user is equal to zero) is now decreased automatically if it exceeds the total number of different base fields. - Depending on the (possibly decreased) value given to CAESAR_LIMIT_SIZE, the memory cost of the "table_1" was reduced by representing internal memory cells using a variable number of bytes (1, 2, 3 or 4 bytes) instead of a fixed number (4 bytes) as done previously. - Depending on the (possibly decreased) value given to CAESAR_LIMIT_SIZE, the actual value given to the CAESAR_HASH_SIZE parameter of CAESAR_CREATE_TABLE_1() (or the default value given to CAESAR_HASH_SIZE when the actual value specified by the user is equal to zero) is now decreased automatically if it exceeds CAESAR_LIMIT_SIZE, i.e., the maximal number of items that can be stored in the table. The "caesar_table_1" manual page was updated accordingly. IMPROVEMENT Number: 1051 Date: Wed Oct 19 17:19:55 MEST 2005 Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: ./bin.*/caesar, ./bin.*/caesar.adt, ./bin.*/caesar.new, ./com/tst, ./src/open_caesar/simulator.c, ./src/open_caesar/simulator.i, ./src/open_caesar/declarator.c, ./src/open_caesar/executor.c, ./src/open_caesar/generator.c, ./src/open_caesar/predictor.c, ./src/open_caesar/terminator.c, ./src/open_caesar/reductor3.c, ./src/open_caesar/generator2.c, ./src/open_caesar/reductor2.c, ./man/*/caesar_stack_1.*, ./man/*/caesar_standard.*, ./man/*/bcg_write.*, ./man/*/bcg_read.*, ./demos/demo_05/user.c, ./demos/demo_05/=READ_ME.txt, ./demos/demo_12/main.c, ./demos/demo_12/=READ_ME.txt Nature: In order to avoid warnings emitted by recent C compilers, such as Sun C compiler 5.7 (SunStudio 10), various changes have been brought to the CADP source files written in C, as well as to the C code generated by CAESAR, CAESAR.ADT, and CAESAR.NEW. We can mention the following enhancements: - addition of missing #include directives, - addition of missing calls to exit(), and - addition of "int" result type when declaring the main() function. IMPROVEMENT Number: 1052 Date: Thu Oct 20 10:42:31 MEST 2005 Report: Thomas Arts (Computer Science Lab, Ericsson, Sweden), Clara Benac Earle (University of Kent at Canterbury, UK), Olivier Bonaventure (University of Liege, Belgium), Romaric Charton (LORIA, Nancy), Wan Fokkink (CWI, Amsterdam, The Netherlands), Hubert Garavel (INRIA/VASY), Francois Germeau (University of Liege, Belgium), Jean-Charles Henrion (University of Liege, Belgium), Marc Herbert (INRIA/VASY), Guoping Jia (Verimag, Grenoble), Frederic Lang (INRIA/VASY), Izak van Langevelde (CWI, Amsterdam, The Netherlands), Wayne Liu (University of Waterloo, Ontario, Canada), Stephane Martin (INRIA/VASY), Radu Mateescu (INRIA/VASY), Charles Pecheur (INRIA/VASY), Wendelin Serwe (INRIA/VASY), and Arno Wouters (CWI, Amsterdam, The Netherlands) Authors: Frederic Lang and Hubert Garavel (INRIA/VASY) Files: bin.*/aldebaran, bin.*/aldebaran.old, com/aldebaran Nature: The Aldebaran binary tool (version 6.6) was replaced by the new shell-script "com/aldebaran" (version 7.0), which invokes the tools Bcg_Info, Bcg_Io, Bcg_Labels, Bcg_Min, Bcg_Open, Bisimulator, Determinator, Evaluator, Exp.Open, Exhibitor, Generator, and Reductor. In the same time, the binary files "bin.*/aldebaran" corresponding to version 6.6 were renamed into "bin.*/aldebaran.old". Aldebaran 7.0 may also invoke Aldebaran 6.6, either when the new option -old (which must be the first option on the command line) is set, or to perform minimization modulo observational equivalence and comparison modulo delay equivalence, which are not supported by other CADP tools. Aldebaran 7.0 fixes 24 out of the 25 known bugs of Aldebaran 6.6. In addition, Aldebaran 7.0 relaxes the following limitations of Aldebaran 6.6: - Aldebaran 7.0 accepts as input the full Exp.Open 2.0 language instead of the subset consisting of LOTOS parallel composition and hiding. In particular, the restriction that forbidded hiding operators whose scope does not contain the whole expression is now relaxed. - As regards comparison modulo branching bisimulation, Aldebaran 7.0 does not require anymore that one of the graphs be free of invisible transitions. - Comparisons modulo branching and observational preorders are now supported. IMPROVEMENT Number: 1053 Date: Fri Oct 28 19:55:44 MEST 2005 Report: Hubert Garavel (INRIA/VASY) Author: Radu Mateescu (INRIA/VASY) Files: bin.*/bisimulator.a, man/*/bisimulator.* Nature: The counterexamples produced by BISIMULATOR when the two LTSs compared are not equivalent were made more readable. Labels of error transitions indicating non equivalent states, which previously were of the following form: "Absent in LTS1: a" and "Absent in LTS2: b" where a (resp. b) is a transition label belonging to the second (resp. the first) LTS given as input to BISIMULATOR, were respectively changed into: "Present in lts2.bcg: a" and "Absent in lts2.bcg: b" where "lts2.bcg" is the name of the BCG file denoting the second LTS given as input to BISIMULATOR. IMPROVEMENT Number: 1054 Date: Mon Nov 21 16:54:06 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: bin.*/reductor.a, man/*/reductor.* Nature: Two new reduction options preserving branching bisimulation were added in Reductor: the "-tauconfluence" option yields a graph in which tau-confluence has been eliminated; the "-taucompression" option yields a graph in which every cycle of tau-transitions has been merged into a single state. BUG FIX Number: 1055 Date: Tue Nov 29 16:48:20 MET 2005 Report: Gwen Salaun (INRIA/VASY) Author: Wendelin Serwe (INRIA/VASY) Files: bin.*/caesar.indent Nature: Two bug fixes and two enhancements were brought to the CAESAR.INDENT pretty-printer for LOTOS: - CAESAR.INDENT no longer removes white spaces before or after the keywords "accept", "actualizedby", "any", "par", "renamedby", and "using". For instance, "any Bool" is no longer translated into "anyBool". - From now on, CAESAR.INDENT handles ".lib" files containing "library"..."endlib" directives (i.e., nested include files). Previously, such directives would cause syntax errors to be reported. - From now on, CAESAR.INDENT no longer inserts extra spaces after the ":", "!" and "?" keywords. For instance, G ! 5 ? B : Bool is now formatted as: G !5 ?B:Bool - In type definitions, the formatting of "sortnames" clauses, "opnnames" clauses, and "S1 for S2" lists was improved. IMPROVEMENT Number: 1056 Date: Fri Dec 16 15:11:44 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: com/exp.open, bin.*/exp2c, bin.*/libexp_open.a, man/*/exp.open.* Nature: Two new partial order reductions were added to Exp.Open: the "-deadpreserving" option yields a reduced graph that contains the same deadlock states as the entire graph, and the "-weaktrace" option yields a reduced graph that is equivalent to the entire graph modulo weak trace equivalence. BUG FIX Number: 1057 Date: Fri Dec 16 16:30:39 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: demos/demo_04/EXP.t Nature: The PRINT_EXP (F, E) function defined in the "EXP.t" file of demo_04 was modified to take into account the case where E == NULL. This avoid a segmentation fault when invoking "reductor -class" on Solaris. BUG FIX Number: 1058 Date: Fri Dec 16 18:12:58 MET 2005 Author: Wendelin Serwe (INRIA/VASY) Files: bin.*/caesar.indent, man/*/caesar.indent.* Nature: Two problems have been fixed in the CAESAR.INDENT tool: - When pretty-printing a ".lib" file, a missing "n" is now added at the end of file; - The unsecure mktemp() function is no longer invoked; instead the "secure" mkstemp() is now invoked (except on Windows, where this function does not exist in the Mingwin32 API). IMPROVEMENT Number: 1059 Date: Mon Dec 19 14:21:19 MET 2005 Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: incl/caesar_kernel.h Nature: A collection of logging macro-definitions was added to the EXEC/CAESAR's interface file "caesar_kernel.h". IMPROVEMENT Number: 1060 Date: Tue Dec 20 11:48:01 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: com/aldebaran, man/*/aldebaran.* Nature: The diagnostics issued by the new ALDEBARAN shell-script are now stored in file "aldebaran.bcg". This behaviour is coherent with respect to other tools such as BISIMULATOR and EVALUATOR, which issue diagnostics in files "bisimulator.bcg" and "evaluator.bcg", respectively. BUG FIX Number: 1061 Date: Tue Dec 20 12:56:17 MET 2005 Report: Hubert Garavel (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard Nature: The BCG files containing the diagnostics issued by ALDEBARAN were not removed from the directory when calling SVL with the -clean option. This problem was solved. BUG FIX Number: 1062 Date: Tue Dec 20 14:14:11 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: demos/demo_10/demo.svl, demos/demo_11/demo.svl, demos/demo_14/demo.svl, demos/demo_37/demo.svl Nature: The diagnostics generated by the ALDEBARAN shell-script for a livelock detection is a graph that contains cycles. In four demo examples, the SVL script stored these diagnostics into ".seq" files, thus causing an error as these diagnostics are not traces. This bug was solved by replacing ".seq" files by ".bcg" files. IMPROVEMENT Number: 1063 Date: Thu Dec 22 12:11:02 MET 2005 Authors: Frederic Lang and Radu Mateescu (INRIA/VASY) Files: bin.*/reductor.a, man/*/reductor.* Nature: A new "-divergence" option, to be used with "-taucompression", was added to REDUCTOR. Instead of full tau-compression, which removes every strongly connected component of tau-transitions, the new "-divergence" option allows to keep a self-looping tau-transition in place of every strongly connected component of tau-transitions, thus preserving the livelocks of the original, entire graph. BUG FIX Number: 1064 Date: Thu Dec 22 16:37:23 MET 2005 Report: Hubert Garavel (INRIA/VASY) Author: Radu Mateescu (INRIA/VASY) Files: bin.*/bisimulator.a Nature: A bug was fixed in BISIMULATOR's diagnostic generation for branching equivalence. In a few cases, some transitions of the diagnostic were labelled by invisible actions instead of the visible actions occurring in the LTSs being compared. BUG FIX Number: 1065 Date: Wed Jan 4 11:14:46 MET 2006 Report: David Champelovier (INRIA/VASY) Author: Radu Mateescu (INRIA/VASY) Files: bin.*/bisimulator.a Nature: Another bug was fixed in BISIMULATOR's diagnostic generation for branching equivalence. Because of the bug, BISIMULATOR would in some cases abort with a core dump when writing the BCG file containing the diagnostic. IMPROVEMENT Number: 1066 Date: Fri Jan 6 18:29:04 MET 2006 Author: Radu Mateescu (INRIA/VASY) Files: bin.*/bisimulator.a Nature: The comparison modulo branching and observational equivalences in BISIMULATOR was improved. The encoding of branching equivalence in terms of boolean equation systems was enhanced in order to reduce the number of tau-closures (transitive reflexive closures over tau- transitions) computed when one of the states being compared does not have outgoing tau-transitions. The new encoding allows to identify (on the fly) the cases where branching equivalence becomes identical to tau*.a equivalence, and to simplify the equations accordingly. We observed that this can reduce the number of boolean variables by up to 40% and the number of boolean operators by up to 60%. The encoding of observational equivalence was improved in the case where the explicit LTS (represented as a BCG file) is deterministic and does not have invisible transitions. In this case, observational equivalence becomes identical (modulo the presence of deadlock states) to tau*.a equivalence. This allows to simplify the equations and to reduce the number of boolean variables and operators by one order of magnitude. IMPROVEMENT Number: 1067 Date: Mon Jan 9 11:48:22 MET 2006 Author: David Champelovier (INRIA/VASY) Files: ./INSTALLATION_MACOS, ./com/installator, ./src/com/install_uncompress Nature: We ported INSTALLATOR to MacOS X 10.4 "Tiger": modifications were made in order to avoid a problem with the "uncompress" command in MacOS X 10.4. Also, the installation directives given in file INSTALLATION_MACOS were updated. BUG FIX Number: 1068 Date: Mon Jan 9 15:07:21 MET 2006 Report: Mohammad Torabi Dashti (CWI, Amsterdam, The Netherlands) Author: Radu Mateescu (INRIA/VASY) Files: man/*/evaluator.* Nature: In the manual page for EVALUATOR, a syntactic error was corrected in an example given to illustrate action predicates involving Unix regular expressions. IMPROVEMENT Number: 1069 Date: Wed Jan 11 09:51:24 MET 2006 Authors: Hubert Garavel and Radu Mateescu (INRIA/VASY) Files: doc/*/Mateescu-05.*, doc/*/Garavel-Mateescu-Bergamini-06.* Nature: Two new papers were added to CADP, one about state space reductions for weak equivalences, and another one about the DISTRIBUTOR and BCG_MERGE tools. BUG FIX Number: 1070 Date: Thu Jan 26 11:42:57 MET 2006 Report: Wendelin Serwe (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2c Nature: A table overflow error was corrected in EXP.OPEN 2.0, which sometimes caused a segmentation fault when parallel operators had synchronization sets containing gates or labels that did not occur in any of the parallel behaviours. IMPROVEMENT Number: 1071 Date: Wed Feb 1 15:04:17 MET 2006 Author: Radu Mateescu (INRIA/VASY) Files: bin.*/bisimulator.a, man/*/bisimulator.l Nature: A new option "-tauconfluence" was added to BISIMULATOR. This option, which can be used in conjunction with branching and observational equivalences, reduces the implicit LTS (represented as an OPEN/CAESAR program) on-the-fly by applying tau-confluence, a form of partial order reduction preserving branching equivalence. In some cases, this option improves the speed and memory consumption significantly. BUG FIX Number: 1072 Date: Thu Feb 2 13:32:10 MET 2006 Report: Nicolas Descoubes (INRIA/VASY) Author: Radu Mateescu (INRIA/VASY) Files: bin.*/xtl Nature: A bug was fixed in the XTL model checker, which caused it to loop forever in certain cases and on some versions of Linux and Windows operating systems. The error was apparently in the Gcc compiler, some versions of which behave incorrectly when they are invoked with the "-O2" option. Replacing the "-O2" by "-O3" option solved the problem. IMPROVEMENT Number: 1073 Date: Thu Feb 16 19:16:51 MET 2006 Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: demo_19/*, demo_38/gate_functions.c Nature: The C files containing the EXEC/CAESAR's gate functions for demo_19 and demo_38 have been enhanced to make use of the logging macro-definitions recently added to "caesar_kernel.h" (see item #1059 above). Also, various issues have been fixed in demo_19. BUG FIX Number: 1074 Date: Fri Feb 17 19:13:52 MET 2006 Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.new Nature: A problem was fixed in the C code generated by CAESAR with "-exec" option (i.e., using the EXEC/CAESAR framework). The visible gate "delta" expressing the termination of a LOTOS program (i.e., the "exit" operator in LOTOS) was translated into a C function named exit(), which caused a confusion with the predefined C function having the same name. From now on, the "delta" gate will be translated into a C gate function named CAESAR_EXIT() instead of exit(). IMPROVEMENT Number: 1075 Date: Tue Feb 21 10:13:43 MET 2006 Report: Patrice Moreaux (Universite de Savoie, France) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: src/com/cadp_postscript Nature: The BCG_DRAW and EUCALYPTUS tools have been enhanced to use automatically, on Solaris and Linux, an alternative PostScript viewer ("gv", "ggv", or "kghostview") when the "ghostview" PostScript viewer "ghostview" is missing. IMPROVEMENT Number: 1076 Date: Tue Feb 21 12:56:19 MET 2006 Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: src/com/cadp_cc Nature: The "cadp_cc" shell-script was enhanced to handle properly, on Solaris, the case where the Sun C compiler is installed elsewhere than in its standard location /opt/SUNWspro/bin/cc. IMPROVEMENT Number: 1077 Date: Tue Feb 21 17:34:28 MET 2006 Authors: David Champelovier, Hubert Garavel, and Frederic Lang (INRIA/ VASY) Files: bin.*/caesar, bin.*/caesar.adt, bin.*/caesar.new, bin.*/exp2c, bin.*/libBCG.a, bin.*/bcg_lib, demos/demo_12/main.c, incl/X_NATURAL.h, incl/bcg_predefined_declarations.h, src/open_caesar/simulator.i Nature: Many changes have been brought to CADP in order to support the Intel C/C++ compiler "icc" version 9.0. These changes concerned existing C files as well as C code generated by tools such as CAESAR, CAESAR.ADT, CAESAR.NEW, EXP2C, and BCG_LIB. They aimed at avoiding warnings emitted by "icc", such as: - warning #108: implicitly-signed bit field of length 1 - warning #180: argument is incompatible with formal parameter - warning #592: variable "bcg1_return" is used before its value is set - warning #1011: missing return statement at end of non-void function "CAESAR_INFORMATION_LABEL" - warning #1011: missing return statement at end of non-void function "CAESAR_COMPARE_LABEL" - warning #1011: missing return statement at end of non-void function "CAESAR_ADT_ITR_NEXT_FUNCTION_xxx" - warning #1011: missing return statement at end of non-void function "EXPOPEN_SELECT_STATE" - warning #1011: missing return statement at end of non-void function "Bcg1_GET_VALUE" IMPROVEMENT Number: 1078 Date: Thu Feb 23 13:39:51 MET 2006 Report: Hubert Garavel and Jerome Fereyre (INRIA/VASY) Author: Radu Mateescu (INRIA/VASY) Files: bin.*/libcaesar.a, incl/caesar_solve_1.h, bin.*/bisimulator.a, bin.*/evaluator.a, man/*/caesar_solve_1.*, doc/*/Garavel-92-a.* Nature: The functions CAESAR_READ_SOLVE_1() and CAESAR_WRITE_SOLVE_1() belonging to the CAESAR_SOLVE_1 library were improved as follows. - For each function, the parameter: CAESAR_PATHNAME of type CAESAR_TYPE_STRING previously denoting the pathname of a ".bes" file was replaced by a parameter: CAESAR_FILE of type CAESAR_TYPE_FILE denoting a pointer to an already open file. Consequently, CAESAR_READ_SOLVE_1() and CAESAR_WRITE_SOLVE_1() no longer invoke fopen() and fclose() internally; this should be done outside. - Two new parameters were added to CAESAR_READ_SOLVE_1(): CAESAR_BLOCK_UNIQUE_RESOLUTION of type CAESAR_TYPE_BOOLEAN_FUNCTION_SOLVE_1 CAESAR_BLOCK_SOLVE_MODE of type CAESAR_TYPE_NATURAL_FUNCTION_SOLVE_1 These parameters are pointers to functions returning, for each index of an equation block in the system, a boolean value indicating whether that block will be solved one or several times, and the resolution mode used for that block, respectively. If the actual values of these parameters are different from NULL, they will be given to the corresponding parameters in the call to CAESAR_CREATE_SOLVE_1() performed by CAESAR_READ_SOLVE_1(), which creates the boolean equation system read from the file. If these parameters are set to NULL, the corresponding parameters of CAESAR_CREATE_SOLVE_1() are determined by the contents of the input file. These two parameters allow to do last minute changes of the resolution of the boolean equation system contained in the input file. - One new parameter was added to CAESAR_WRITE_SOLVE_1(): CAESAR_DIAGNOSTIC of type CAESAR_TYPE_BOOLEAN If this parameter is set to CAESAR_FALSE, the portion of the boolean equation system written into the output file will contain all equations defining the variables upon which the variable CAESAR_V depends. Otherwise, the output file will contain only the equations defining the variables contained in the diagnostic of the CAESAR_V variable. As these changes are NOT backward-compatible with former versions of the CAESAR_SOLVE_1 library, user applications invoking CAESAR_READ_SOLVE_1() and/or CAESAR_WRITE_SOLVE_1() should be updated accordingly. BUG FIX Number: 1079 Date: Fri Feb 24 12:12:28 MET 2006 Report: David Champelovier (INRIA/VASY) Author: Radu Mateescu (INRIA/VASY) Files: bin.*/xtl Nature: A bug was fixed in the XTL tool, which caused a core dump in the particular situation when the input BCG file becomes unreadable between the moment at which XTL was launched and the moment the C code generated by the tool is executed. BUG FIX Number: 1080 Date: Thu Mar 2 14:29:51 MET 2006 Report: Frederic Lang (INRIA/VASY) Author: Radu Mateescu (INRIA/VASY) Files: bin.*/libcaesar.a, bin.*/reductor.a Nature: A bug was fixed in the CAESAR_SOLVE library, which caused a segmentation fault when invoking the REDUCTOR tool with the "-taucompression -divergence" options. BUG FIX Number: 1081 Date: Fri Mar 3 17:32:17 MET 2006 Report: Gwen Salaun (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2c Nature: A bug was fixed, which caused EXP.OPEN 2.0 to abort with a segmentation fault while generating the C code corresponding to a composition expression containing the "label par" operator. IMPROVEMENT Number: 1082 Date: Mon Mar 6 19:37:52 MET 2006 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard, man/*/svl.* Nature: The SVL language and compiler were extended to integrate several recent functionalities of CADP: - Comparison using BISIMULATOR may now use one of the "dfs" or "bfs" methods; this gives access to the "-dfs" and "-bfs" options of BISIMULATOR for selecting depth-first search or breadth-first search algorithms. - Temporal logic formula verification (i.e., the "verify" operator in SVL) may now use the "dfs", "bfs", or "acyclic" methods; this triggers the "-dfs", "-bfs", and "-acyclic" options of EVALUATOR, thus allowing to choose among a depth- first search algorithm, a breadth-first search algorithm, or an algorithm dedicated to acyclic graphs. IMPROVEMENT Number: 1083 Date: Fri Mar 10 08:45:50 MET 2006 Authors: Frederic Lang and Hubert Garavel (INRIA/VASY) Files: bin.*/determinator.a, bin.*/reductor.a, man/*/determinator.l, man/*/reductor.l, com/aldebaran, man/*/aldebaran.*, demo_31/demo.svl, demo_39/demo.svl Nature: A new version 5.0 of Reductor was released, together with a new version of Determinator. The new version of Reductor includes several functionalities previously available in Determinator. The main changes wrt version 4.0 of Reductor are the following: - The "-minimal" option of Reductor was renamed into "-total" (since "-minimal" does not always generate a minimal graph). A new "-partial" option (opposite of "-total") was added for symmetry. - New equivalences have been added to Reductor, namely "-trace" (which implements trace reduction, previously available in Determinator as normal determinization), "-weaktrace" (which implements weak trace reduction, previously available in Determinator as determinization with tau-elimination), and "-taudivergence". - Consequently, the determinization of ordinary Labelled Transition Systems is no longer supported by Determinator. Option "-rate" of Determinator becomes the default option. The options "-normal" and "-tauclosure" of Determinator are now deprecated. The Reductor tool should be used instead: Precisely, one should use ``reductor -trace'' instead of ``determinator -normal'', and ``reductor -weaktrace'' instead of ``determinator -normal -tauclosure''. The Aldebaran 7.0 shell-script was modified; it now invokes Reductor instead of Determinator to perform determinization, trace reduction and weak trace reduction. This change is transparent to the end user. The demos 31 and 39, which invoked ``determinator -rate'' have been simplified to drop the "-rate" option. The Aldebaran, Determinator, and Reductor manual pages have been updated accordingly. The Reductor manual page, in particular, was deeply revised. IMPROVEMENT Number: 1084 Date: Fri Mar 10 18:38:46 MET 2006 Authors: Frederic Lang and Hubert Garavel (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard, man/*/svl.*, demo_07/demo.svl, demo_32/demo.svl Nature: The SVL language and compiler have been modified to reflect the changes brought to Reductor 5.0: - The "reduction" operator of SVL is now equipped with a new clause "with reductor" and three new equivalence names ("tau-confluence", "tau-compression", and "tau-divergence"). - A new "partial" or "total" optional attribute was added to the "reduction", "root reduction", "leaf reduction", "root leaf reduction", and "node reduction" operators. Total reduction has the same meaning as reduction alone. Partial reduction denotes an on-the-fly reduction performed using Reductor, which is generally faster but produces a larger graph than total reduction. - To compute "tau-confluence", "tau-compression", and "tau-divergence", SVL invokes Reductor by default. To compute "trace" and "weak trace" equivalence, SVL now invokes Reductor instead of Determinator. To compute "tau*.a" and "safety" equivalences, SVL now invokes Reductor by default instead of Aldebaran. Demo_07 and demo_32 have been modified so as to remove occurrences of "using fly" in SVL scripts. IMPROVEMENT Number: 1085 Date: Wed Mar 15 11:35:00 MET 2006 Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: co,/tst, incl/bcg_standard.h, incl/caesar_standard.h, ./INSTALLATION_2 Nature: Many changes have been brought to CADP tools for a smoother support of Intel's ICC 9.0 compiler for Linux and Sun's SunStudio 11 compiler for Solaris: - The "tst" shell-script now recognizes ICC and displays its version number. - The "tst" shell-script also displays the version number of Sun's C compiler and, when necessary, emits a warning about the C compilers available on Solaris. - "tst" now emits a warning message if the version of ICC is l_cc_c_9.0.030 or older, as these versions of ICC contain a bug (issue Q338282 : "sign extension on cast from unsigned short to int when optimized"), detected by VASY, that prevents BCG tools from working properly when using optimization option "-O1" (which is activated by default in ICC). This issue was fixed by Intel in version l_cc_c_9.0.031. - On Linux, "tst" no longer displays any warning message when $CADP_CC is set to a value different from "gcc" (as "icc" is also a valid value). Also, "tst" no longer complains in the particular case where, under Linux, $CADP_CC is set to "icc" and $LD_LIBRARY_PATH contains the path of ICC's dynamic libraries. - "tst" now checks the C compiler contained in $CADP_CC by trying to compile and execute a simple C program. - The INSTALLATION_2 file was enhanced to provide better explanations on how to set $CADP_CC (especially for Solaris users) and how to use Parasoft's Insure software. - The include files "bcg_standard.h" and "caesar_standard.h" have been adapted to work with ICC. BUG FIX Number: 1086 Date: Thu Mar 16 12:05:45 MET 2006 Report: Wendelin Serwe (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard Nature: If the diagnostic produced by the SVL's "verify" (respectively, "comparison") operator was a trace and if some labels in this trace contained the sub-string "TRUE" or "FALSE", these labels were displayed after the expected verification (respectively, comparison) result, i.e., TRUE or FALSE. This bug was fixed. BUG FIX Number: 1087 Date: Thu Mar 16 15:32:42 MET 2006 Author: Frederic Lang (INRIA/VASY) Files: bin.*/reductor.a Nature: In some cases, the labelled transition system generated by ``reductor -total -safety'' was not minimal modulo safety equivalence. This bug was fixed. IMPROVEMENT Number: 1088 Date: Thu Mar 16 16:23:16 MET 2006 Author: Hubert Garavel (INRIA/VASY) Files: bin.*/bcg_min Nature: BCG_MIN now emits a warning message when the "-epsilon" option is used for standard labelled transition systems, i.e., when neither the "-rate" nor "-prob" option is given on the command-line. IMPROVEMENT Number: 1089 Date: Fri Mar 24 18:14:16 MET 2006 Report: Sven Johr, Holger Hermanns, and Reza Pulungan (Saarland University, Germany) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/bcg_min, bin.*/determinator.a, man/*/bcg_min.*, man/*/determinator.* Nature: A new option "-format" was added to BCG_MIN and DETERMINATOR. This option allows to control the representation of floating- point numbers finely. Previously, the floating-point numbers (rate or probabilities) occurring on the transitions of the Markov chains generated by BCG_MIN and DETERMINATOR were displayed using the "%f" format of sprintf(), i.e. with at most 6 digits after the radix character ".", thus causing a loss of precision (transitions with slightly different values being considered as identical). From now on, the format for floating-point numbers can be specified using the "-format" option. Also, the following (incompatibble) changes have been brought to BCG_MIN and DETERMINATOR: - When no "-format" option is given, the default format used by BCG_MIN and DETERMINATOR is now "%g" instead of "%f". For instance, this allows to display a probability value as 1.23e-9 instead of 0.000000. - For BCG_MIN, when no "-epsilon" option is given, the default precision is now 1e-6 instead of 1e-3. Thus, the behaviour of BCG_MIN is now aligned on that of DETERMINATOR. The manual pages for BCG_MIN and DETERMINATOR have been updated accordingly. IMPROVEMENT Number: 1090 Date: Fri Mar 24 19:20:19 MET 2006 Author: Radu Mateescu (INRIA/VASY) Files: bin.*/evaluator.a, man/*/evaluator.* Nature: The "-bes" option of EVALUATOR was improved in two ways: - When this option is given on the command-line, EVALUATOR no longer stops after producing the text file containing the boolean equation system; from now on, EVALUATOR continues evaluating the formula and generating the diagnostics. - If the file name specified after "-bes" has the extension ".bes.gz", it will be compressed using gzip(1), which yields substantial file size reductions for large boolean equation systems. IMPROVEMENT Number: 1091 Date: Mon Mar 27 19:33:42 MEST 2006 Authors: Antonella Chirichiello (Univ. La Sapienza, Roma, Italy), Gwen Salaun, and Wendelin Serwe (INRIA/VASY) Files: demos/demo_40 Nature: A new demo (Web services for stock management and on-line book auction) was added to CADP. BUG FIX Number: 1092 Date: Tue Mar 28 17:58:42 MEST 2006 Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.new Nature: In the C code generated by CAESAR (and CAESAR.NEW) using the "-exec" option (i.e., the C code produced for the EXEC/CAESAR environment), the name of the gate function generated for the "delta" gate of LOTOS was renamed into "EXIT()" instead of "CAESAR_EXIT()" (see also item #1074 above). This avoids a potential name conflict in case the LOTOS specification with functionality "exit" would also contain a visible gate named "caesar_exit", or "Caesar_Exit", etc. BUG FIX Number: 1093 Date: Tue Mar 28 18:55:08 MEST 2006 Report: Reza Pulungan (Saarland Univ., Germany) Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel Nature: A bug was fixed in the SVL tool, which generated incorrect ".exp" files when the gates to synchronize did not start with a letter (e.g., when these gates were numbers). BUG FIX Number: 1094 Date: Thu Mar 30 16:19:48 MEST 2006 Report: Wendelin Serwe (INRIA/VASY) Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.new Nature: In the C code generated by CAESAR (and CAESAR.NEW) using the "-exec" option, the gate functions were not declared before being used. With recent C compilers, such as SunStudio 11, this caused warnings of the form: warning: implicit declaration of function `G' This issue was solved. BUG FIX Number: 1095 Date: Thu Mar 30 17:45:25 MEST 2006 Report: Wendelin Serwe (INRIA/VASY) Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.new Nature: In the special case of LOTOS specifications not containing any visible nor tau transition, the C code generated by CAESAR (and CAESAR.NEW) with option "-exec" would not compile properly. This issue was fixed. IMPROVEMENT Number: 1096 Date: Thu Mar 30 21:48:36 MEST 2006 Report: Reza Pulungan (Saarland Univ., Germany) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/bcg_io, man/*/bcg_io.* Nature: A new option "-format" (similar to the "-format" option added to BCG_MIN and DETERMINATOR recently) was added also to the "-etmcc" option of BCG_IO. This option controls the format under which floating-point numbers (rates or probabilities) are written into the ".tra" file to be read by the ETMCC model checker. This change is potentially incompatible, as floating-point numbers are now displayed, by default, using format "%g" instead of "%f". However, the former behaviour can still be obtained using option ``-format "%f"''. BUG FIX Number: 1097 Date: Thu Apr 6 19:24:20 MEST 2006 Report: Wendelin Serwe (INRIA/VASY) Authors: Radu Mateescu and David Champelovier (INRIA/VASY) Files: bin.*/ocis.a Nature: Recent versions of OCIS could not execute properly. At link edit time, an error message of the form: Undefined symbol CAESAR_TAU_CLOSURE_REACH_DEADLOCK_EDGE_LIST would be emitted. This issue was fixed. IMPROVEMENT Number: 1098 Date: Fri Apr 7 17:02:48 MEST 2006 Authors: Hubert Garavel and Radu Mateescu (INRIA/VASY) Files: doc/=READ_ME.txt Nature: The CADP publication list was entirely reorganized. New sections were added to reflect the new software architecture of CADP. Sections related to obsolete or deprecated CADP tools were moved at the end of the list. The corresponding Web page http://vasy.inria.fr/publications/cadp.html was updated accordingly. BUG FIX Number: 1099 Date: Fri Apr 7 18:04:11 MEST 2006 Report: Frederic Lang (INRIA/VASY) Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: bin.*/libcaesar.a Nature: An issue was fixed in function CAESAR_TEST_REGEXP() defined in the "caesar_regexp.h" library. In some cases, this function would modify the character string pointed by its first argument. On Linux, this could cause a segmentation fault when running EXP.OPEN. IMPROVEMENT Number: 1100 Date: Mon Apr 10 16:37:41 MEST 2006 Author: Radu Mateescu (INRIA/VASY) Files: bin.*/bisimulator.a, man/*/bisimulator.* Nature: The "-bes" option of BISIMULATOR was improved in two ways (see also item #1090 above): - When this option is given on the command-line, BISIMULATOR no longer stops after producing the text file containing the boolean equation system; from now on, BISIMULATOR continues comparing the graphs and generating the diagnostics. - If the file name specified after "-bes" has the extension ".bes.gz", it will be compressed using gzip(1), which yields substantial file size reductions for large boolean equation systems. IMPROVEMENT Number: 1101 Date: Tue Apr 18 11:25:22 MEST 2006 Authors: Christophe Joubert and Radu Mateescu (INRIA/VASY) Files: doc/*/Joubert-Mateescu-06.* Nature: A new paper on distributed verification was added in the "doc" directory. BUG FIX Number: 1102 Date: Wed Apr 26 18:51:34 MEST 2006 Report: Ken Turner (University of Stirling, Scotland, UK) Author: Hubert Garavel (INRIA/VASY) Files: tcl-tk/com/wish, tcl-tk/com/tixwish Nature: On Windows, if the environment variable $CYGWIN was set and if its value contained the substring "tty", all the CADP tools based on Tcl/Tk (e.g., Installator, Eucalyptus) would fail with the following error message: [main] echo ... tty_list::allocate_tty: No tty allocated while executing ... The Wish and Tixwish shell-scripts included in CADP have been modified so as to remove the "tty" substring from $CYGWIN when present. BUG FIX Number: 1103 Date: Tue May 2 14:18:30 MEST 2006 Report: Gwen Salaun and Wendelin Serwe (INRIA/VASY) Author: Radu Mateescu (INRIA/VASY) Files: bin.*/bisimulator.a Nature: A bug was fixed in the counterexample generation feature of BISIMULATOR. The bug, which occurred only when checking branching equivalence, caused in some cases the insertion in the counterexample of certain transition sequences that were absent from both LTSs being compared. BUG FIX Number: 1104 Date: Wed May 3 18:57:38 MEST 2006 Report: Wendelin Serwe (INRIA/VASY) Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: incl/X_STRING.h Nature: The two macro-definitions of ADT_CMP_STRING (X1, X2) and ADT_PRINT_STRING (F, X) have been modified to handle the cases where string pointers X, X1, and/or X2 are NULL (this situation can arise when using CAESAR.NEW, which resets dead variables to NULL automatically). IMPROVEMENT Number: 1105 Date: Thu May 4 10:34:21 MEST 2006 Report: Jacques Abily and Sylvie Lesmanne (Bull) Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.new, man/*/caesar.* Nature: CAESAR and CAESAR.NEW have been enhanced with a "-external" option that generates automatically a prototype file (with suffix ".c.proto") containing skeletons for EXEC/CAESAR's gate functions, i.e., functions associated to all visible gates of the LOTOS specification. These gate functions are incomplete: they must be completed manually (at all places marked "...") with input/output operations required to interface the C code generated from the LOTOS specification with its real, external environment. Option "-external" must be used together with "-exec" option. Three new additional options ("-indent", "-oldstyle", and "-newstyle") have been also added to control the form of the generated C code. IMPROVEMENT Number: 1106 Date: May 5 10:37:35 MEST 2006 Report: Gwen Salaun and Wendelin Serwe (INRIA/VASY) Authors: David Champelovier, Hubert Garavel, and Frederic Lang (INRIA/ VASY) Files: src/eucalyptus/eucalyptus.tcl, src/com/xeuca_convert Nature: A new version 2.6 of EUCALYPTUS was released, which reflects the changes brought to the command-line CADP tools. As regards the menu bar, the changes are the following: - In the menu "File / Save Preferences", the preferred options for BISIMULATOR, EVALUATOR, and TGV are now stored in file ~/.xeucarc. - Following the replacement of ALDEBARAN by a shell-script (see item #1052 above), the menu "Options / ALDEBARAN" was removed. The "-labels" option of ALDEBARAN can now be set in the "Reduce" window of ALDEBARAN. - The former menu "Options / EVALUATOR and XTL" was splitted into "Options / EVALUATOR" and "Options / XTL". The new menu "Options / EVALUATOR" gives access to the recent options of EVALUATOR, including "-verbose", "-silent", "Boolean Equation System printing...", etc. - A new menu "Options / EXP.OPEN" was added to specify the command-line options of EXP.OPEN 2.0. - The "Help" menu was updated. In particular, the manual page for the (now obsolete) EXP2FC2 tool is no longer proposed in the Help window. As regards the contextual menus attached to files in the left window of EUCALYPTUS, the following changes were made: - In the "Compare..." menu, tau-confluence option was added for the BISIMULATOR tool and the ALDEBARAN tool is no longer proposed (since BISIMULATOR is superior to ALDEBARAN in every respect, except that it does not support the delay equivalence, which is never used in practice). Also, a bug that prevented the comparison between a ".aut" and a ".bcg" file was fixed. - In the "Convert" menu for ".exp" files, a bug was fixed that prevented ".exp" files from being translated into the FC2 format. Also, the translation into the PEP format is now proposed. - A new menu "Evaluate performance..." was added to invoke the BCG_STEADY and BCG_TRANSIENT tools. - In the "Evaluate temporal formula..." menu, the access to options "-bfs", "-dfs" and "-acyclic" of EVALUATOR was made safer. EUCALYPTUS only proposes three possibilities ("-bfs", "-dfs", and "-dfs -acyclic") thus preventing from selecting "-bfs" and "-acyclic" simultaneously. - In the "Find Deadlock..." menu, the ALDEBARAN tool is no longer proposed. - In the "Find Livelock..." menu, the ALDEBARAN tool is no longer proposed. - In the "Properties" menu, the ALDEBARAN tool is no longer used to display properties of ".exp" files; EXP.OPEN is used instead, with its "-info" option. - In the "Reduce..." menu, many changes have been made. On- the-fly reduction using the REDUCTOR tool is now proposed for several types of files, including ".lotos" files. Generally, the ALDEBARAN tool is still proposed, but for observational equivalence only, as other equivalences are more efficiently implemented by BCG_MIN and REDUCTOR. On ".exp" files however, ALDEBARAN is no longer proposed in the "Reduce..." menu, since ALDEBARAN does not implement observational equivalence for ".exp" files. Finally, the new "-format" option of BCG_MIN and the new default value for the "-epsilon" option of BCG_MIN (see above item #1089) are now reflected by EUCALYPTUS. IMPROVEMENT Number: 1107 Date: Fri May 19 16:39:31 MEST 2006 Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: demos/demo_05/user.c, demos/demo_12/main.c, demos/demo_19/gate_functions.c, incl/caesar_standard.h, src/exec_caesar/main.c, src/open_caesar/declarator.c, src/open_caesar/executor.c, src/open_caesar/generator.c, src/open_caesar/generator2.c, src/open_caesar/predictor.c, src/open_caesar/reductor2.c, src/open_caesar/reductor3.c, src/open_caesar/simulator.c, src/open_caesar/terminator.c Nature: Minor changes have been made to source C code files included in CADP so as to avoid warnings from the "lint" verifier of Sun Studio 11. IMPROVEMENT Number: 1108 Date: Tue May 23 18:38:20 MEST 2006 Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar.indent Nature: CAESAR.INDENT was modified to produce nicer results when pretty-printing LOTOS specifications, and especially data type definitions: - A newline character is now inserted after keyword "opns" - No newline character is any more inserted after keyword "=>" - Equations occurring after a "forall" clause are shifted to the right by one tabulation - Spaces are no longer inserted around keyword ":" in variable declarations (which have the form X:S or X1, ..., Xn:S) IMPROVEMENT Number: 1109 Date: Tue Jun 6 16:46:50 MEST 2006 Report: Gert Huisman (Vrije Universiteit Amsterdam, The Netherlands) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: com/rfl Nature: Two new options ("-v" and "-t") have been added to the "rfl" shell-script. These options will be used when sending e-mail messages to warn users about CADP license expiration. They will allow to mention the CADP version number and the date at which the license was requested. These are useful information for users running different versions of CADP on the same machine(s). BUG FIX Number: 1110 Date: Tue Jun 6 19:57:26 MEST 2006 Author: Hubert Garavel (INRIA/VASY) Files: com/rfl Nature: When installing CADP on certain versions of Windows and Cygwin tools, the prototype license files sent by Installator would contain extra '^M' (r) characters. This was solved by modifying the "rfl" shell-script so as to remove these extra-characters. IMPROVEMENT Number: 1111 Date: Wed Jun 7 19:21:08 MEST 2006 Report: Christophe Joubert (University of Malaga, Spain) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: ./INSTALLATION_2, ./INSTALLATION_4, ./src/com/installator/installator.tcl Nature: When installing CADP on a FAT or NTFS partition accessed from Linux (using SAMBA), the installation would fail silently as symbolic links are not supported by FAT nor NTFS. Two actions have been taken to address this issue: - This problem is now documented in files INSTALLATION_2 and INSTALLATION_4. - Installator now checks whether it is possible to create symbolic links on the partition chosen by the user to install CADP; if not, an error message is displayed. IMPROVEMENT Number: 1112 Date: Mon Jun 26 14:25:14 MEST 2006 Report: Nathalie Lepy (INRIA/VASY) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: src/eucalyptus/eucalyptus.tcl, src/com/cadp_web, ./INSTALLATION_2 Nature: The EUCALYPTUS graphical user-interface was enhanced in several ways: - On Unix systems, the default browser (i.e., the default value of the environment variable $NAVIGATOR) is now "firefox" instead of "netscape". - The contents of the "Web" menu have been redesigned. The new "Web" menu gives access to various Web pages providing useful information about CADP: tutorials, manual pages, case studies, FAQ, etc. - Two problems have been fixed in the "Compare..." and "Reduce..." menus for files with ".LOTOS" extension (i.e., files to be pre-processed using APERO). - The "More" menu for files with a ".lotos" or ".LOTOS" extension has been renamed into "More commands". For ".LOTOS", this menu now contains the "Compile abstract data types" entry. For ".lotos" and ".LOTOS" files, two new entries have been added: "Generate external types/ functions" (the corresponding menu entry "Options / Caesar.adt / Generate external prototype files" has been removed) and "Generate gate functions...". - In the XTL-related section of the "Verify temporal properties..." menu, the "Expand only" option has been made active. IMPROVEMENT Number: 1113 Date: Mon Jun 26 17:28:52 MEST 2006 Author: Hubert Garavel (INRIA/VASY) Files: bin.*/caesar.adt, man/*/caesar.adt.* Nature: From now on, CAESAR.ADT will indent, not only the generated ".h" file as usual, but also the ".f.proto" and ".t.proto" files if the "-external" option is selected. The "-indent" option can be use to prevent these files from being indented. IMPROVEMENT Number: 1114 Date: Mon Jun 26 19:33:52 MEST 2006 Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.new, man/*/caesar.* Nature: From now on, if the "-external" option is given, CAESAR and CAESAR.NEW will no longer stop if the ".c" file already exists and is up to date: CAESAR will generate both the ".c" and the ".c.proto" files. IMPROVEMENT Number: 1115 Date: Mon Jun 26 19:43:50 MEST 2006 Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: bin.*/caesar.adt Nature: From now on, if the "-external" option is given, CAESAR.ADT will no longer stop if the ".h" file already exists and is up to date: CAESAR.ADT will generate the ".h", ".f.proto", and ".t.proto" files. BUG FIX Number: 1116 Date: Wed Jun 28 12:42:03 MEST 2006 Report: Nathalie Lepy (INRIA/VASY) Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: src/eucalyptus/eucalyptus.tcl Nature: In the EUCALYPTUS interface, when evaluating an XTL formula on a BCG file, the "Expand only" option has been made active. BUG FIX Number: 1117 Date: Mon Jul 3 17:25:10 MEST 2006 Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: com/tst Nature: When running the "tst" shell-script on Linux, if the process stack size was set to unlimited, an error message was issued: tst: line 1055: [: unlimited: integer expression expected This problem was fixed. BUG FIX Number: 1118 Date: Mon Jul 3 18:24:33 MEST 2006 Report: David Champelovier and Frederic Lang (INRIA/VASY) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: src/com/cadp_tail Nature: Under some circumstances, the "cadp_tail" command would emit an error message: cadp_tail: line 69: 2548 Broken pipe tail "$@ This problem was solved by handling SIGPIPE signals correctly. IMPROVEMENT Number: 1119 Date: Mon Jul 3 19:12:41 MEST 2006 Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: src/com/cadp_indent Nature: The "cadp_indent" command can now detect automatically the Sun pretty-printer ("indent") even if it is not located in /opt/SUNWspro/bin/indent. It can also use the GNU "indent" if present. IMPROVEMENT Number: 1120 Date: Tue Jul 4 19:39:32 MEST 2006 Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar.indent Nature: The LOTOS pretty-printer was enhanced, as regards variable declarations. Single variable declarations are formatted without spaces ("X:S"), while multiple variable declarations are formatted with spaces ("X1, ..., Xn : S"), so as to enhance readability. BUG FIX Number: 1121 Date: Wed Jul 5 17:08:48 MEST 2006 Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar.bdd Nature: A semantic error was fixed in the "-unit" option of the CAESAR.BDD tool. The algorithm implementing this option was entirely redesigned so as to be compatible with the definition of "concurrent units" given in the [Garavel-Serwe-04] paper. BUG FIX Number: 1122 Date: Fri Jul 7 11:41:30 MEST 2006 Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: src/com/cadp_indent Nature: The "cadp_indent" command was modified so as to cope with core files on Linux (which are not named "core", but "core.pid", where pid is a process number). IMPROVEMENT Number: 1123 Date: Fri Jul 7 17:33:12 MEST 2006 Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.old, bin.*/caesar.new, com/rfl, demo_20/=READ_ME.txt, demo_27/=READ_ME.txt, demo_28/=READ_ME.txt Nature: The "caesar" binary (version 6.2 of CAESAR) was renamed into "caesar.old". The "caesar.new" binary (version 7.0 of CAESAR) was renamed into "caesar" and becomes the default. The statistics of demos 20, 27 and 28 have been updated accordingly, so as to reflect the reduction factor obtained using CAESAR 7.0. On all CADP demos, we observed that this divides the number of states generated by an average factor of 45 (with a maximum factor of 4,400) and the numbers of transitions by an average factor of 38 (with a maximum factor of 3,100). IMPROVEMENT Number: 1124 Date: Mon Jul 10 18:29:19 MEST 2006 Authors: Frederic Lang and Hubert Garavel (INRIA/VASY) Files: com/exp.open, bin.*/exp2c, man/*/exp.open.*, src/eucalyptus/eucalyptus.tcl, src/com/xeuca_convert Nature: A new "-network tina" option was added to the EXP.OPEN 2.0 compiler, so as to convert the input language of EXP.OPEN into the Petri net format of the TINA toolbox. The EUCALYPTUS graphical interface was enhanced to give access to this new functionality in the "Convert..." menu associated to ".exp" files. BUG FIX Number: 1125 Date: Wed Jul 12 11:37:40 MEST 2006 Report: Nathalie Lepy (INRIA/VASY) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: src/eucalyptus/eucalyptus.tcl Nature: The Tcl/Tk code of EUCALYPTUS was modified to handle properly the situation where a user replaces, in the interface panels, an (integer or floating-point) number with the empty string. From now on, quotes are added around numbers so that empty strings can be detected. IMPROVEMENT Number: 1126 Date: Wed Jul 19 12:16:21 MEST 2006 Author: Radu Mateescu (INRIA/VASY) Files: doc/*/Mateescu-06-a.* Nature: An overview paper on the CAESAR_SOLVE library for on-the-fly resolution of alternation-free boolean equation systems was added. BUG FIX Number: 1127 Date: Fri Jul 21 11:32:08 MEST 2006 Report: David Champelovier (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard Nature: On Windows, some ".sync" files produced by SVL automatically for Projector were incorrect. This bug was fixed. BUG FIX Number: 1128 Date: Tue Jul 25 11:46:23 MEST 2006 Report: David Champelovier (INRIA/VASY) Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.macOS/projector.a Nature: The Mac OS X version of the PROJECTOR tool was modified so as to get rid of the following error message: > /usr/bin/ld: warning -L: directory name ('$CADP'/bin.macOS) > does not exist IMPROVEMENT Number: 1129 Date: Tue Jul 25 12:16:11 MEST 2006 Authors: Frederic Lang and Hubert Garavel (INRIA/VASY) Files: bin.*/reductor.a, bin.*/tgv.a, bin.*/xsimulator.a, com/bcg_open, com/caesar.open, com/exp.open, com/seq.open, src/open_caesar/generator.c, src/open_caesar/generator2.c, src/open_caesar/reductor2.c, src/open_caesar/reductor3.c Nature: Many CADP programs and shell-scripts have been modified so as to add double quotes around occurrences of $CADP in $LDFLAGS and $LD_LIBRARY_PATH. This change is yet another step towards the acceptance and proper handling of white spaces in file names. BUG FIX Number: 1130 Date: Tue Jul 25 12:24:23 MEST 2006 Report: Wendelin Serwe (INRIA/VASY) Author: Radu Mateescu (INRIA/VASY) Files: bin.*/bisimulator.a, man/*/bisimulator.* Nature: A bug was fixed in the counterexample generation for branching equivalence in BISIMULATOR. In some cases, the counterexamples produced contained some transition sequences which were not included in the input LTSs. The new counterexamples are correct w.r.t. this criterion and illustrate properly the cases where the non equivalence of the LTSs is determined by the non equivalence of the source states of some transitions (the cases erroneously handled before were precisely of this type). The description of the -diag option in the manual page of the tool was updated accordingly. (The present bug fix completes a previous, partial bug fix for the same problem - see item #1103 above). BUG FIX Number: 1131 Date: Fri Sep 8 18:35:41 CEST 2006 Author: Hubert Garavel (INRIA/VASY) Files: com/tst Nature: The "tst" shell-script was enhanced in several ways to be fully compatible with the Solaris 10 operating system: a) When running on Solaris 10, "tst" no longer emits the following warning: > Current operating system is ``SunOS 5.10'' > *** The CADP software is intended for SunOS 5.5 (Solaris > 2.5) or higher > ... b) When "indent" is missing on the current, "tst" explains how to obtain it from Sun Web site: > *** Can't find command ``indent'' > ==> Add directory /opt/SUNWspro/bin to your ``$PATH'' > variable > If this directory does not exist, we recommend that you > install the Sun Studio 11 (or higher) tool suite, which > you can freely download from www.sun.com (follow > Downloads, then Development Tools) c) When the default C compiler (i.e., gcc) is missing, the explanation message was improved. BUG FIX Number: 1132 Date: Mon Sep 18 14:08:55 MEST 2006 Report: Wendelin Serwe (INRIA/VASY) Author: Radu Mateescu (INRIA/VASY) Files: bin.*/evaluator.a Nature: A minor error was fixed in the way a certain error message was printed by EVALUATOR. BUG FIX Number: 1133 Date: Tue Sep 19 11:50:01 MEST 2006 Author: Radu Mateescu (INRIA/VASY) Files: bin.*/evaluator.a Nature: A portability issue was fixed in the lexical scanning of .blk files containing modal equation systems given as arguments to the "-block" option of EVALUATOR. On Windows systems, this issue caused an infinite loop of EVALUATOR when parsing .blk files containing comments enclosed between "(*" and "*)". BUG FIX Number: 1134 Date: Wed Sep 20 15:16:37 MEST 2006 Report: Reza Pulungan (Saarland University, Germany) Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: src/com/install_df Nature: The "install_df" script used by INSTALLATOR was modified so as to avoid a fatal error in INSTALLATOR. This error occurred on Windows only for filesystems (mount points) with long names. After entering the download password, the following error message would be displayed: > syntax error in expression "double(round((double(27%) / > (1024))*10))/10": unexpected close parenthesis > syntax error in expression "double(round((double(27%) / > (1024))*10))/10": unexpected close parenthesis > while executing > "expr double(round((double($TAILLE) / (1024))*10))/10" > (procedure "Get_Free_Space" line 7) > invoked from within > "Get_Free_Space $CADP(TMP_ARCHIVE)" > (procedure "Check_Required_Space" line 28) > ... This problem is solved now. IMPROVEMENT Number: 1135 Date: Thu Sep 21 11:49:31 MEST 2006 Report: Jan Rakow (OFFIS, Oldenburg, Germany) Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: com/tst Nature: The "tst" shell-script emits a warning when the maximal stack size is not large enough (this can cause problems with those CADP programs making intensive use of recursion). In such case, it emits a warning message: > *** The maximal stack size for executing your programs is > currently limited to 2042 kbytes (see the ``ulimit -s'' > command'') > ... Unfortunately, it appears that command "ulimit -s" is not fully implemented in Cygwin, so that it is not possible to increase the stack size this way. The "tst" warning message was improved to explain this situation. BUG FIX Number: 1136 Date: Fri Sep 22 12:53:34 MEST 2006 Report: Reza Pulungan (Saarland University, Germany) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: bin.win32/* Nature: The CADP licensing mechanism was enhanced to handle the case where, on Windows, the CADP tools are invoked from a current directory that is not on the same disk as the disk on which CADP is installed, for instance, when the user home directory is on disk D: while CADP is installed on disk C:. BUG FIX Number: 1137 Date: Fri Sep 22 17:15:32 MEST 2006 Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: src/com/cadp_print, com/tst, INSTALLATION_2 Nature: The "cadp_print" shell-script was modified to fetch "lpr" in "/usr/ucb" on Solaris. This suppresses the need for having "/usr/ucb" present in the $PATH on Solaris, thus simplifying the installation for Solaris users. The INSTALLATION_2 file and the "tst" shell-script have been modified accordingly. IMPROVEMENT Number: 1138 Date: Fri Sep 22 17:22:09 MEST 2006 Report: Damien Thivolle (INRIA/VASY) Author: Radu Mateescu (INRIA/VASY) Files: src/xtl/actl.mcl Nature: The translation in modal mu-calculus of the inevitability operator AU_A_A() of ACTL was improved. When using EVALUATOR to verify temporal formulas containing this operator, the new translation always leads to gains in time and memory, sometimes up to a factor 8. IMPROVEMENT Number: 1139 Date: Mon Sep 25 16:43:31 MEST 2006 Report: Claude Jard (ENS Cachan, Bretagne, France) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: bin.macOS/* Nature: The CADP licensing mechanism was enhanced to handle the case of disconnected Mac OS X machines without DHCP (i.e., using fixed IP addresses). Upon disconnection, the names of these machines change, e.g., from "xxx.domain.com" into "xxx.local". BUG FIX Number: 1140 Date: Thu Oct 5 16:43:49 MEST 2006 Report: Jerome Fereyre (INRIA/VASY) Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.*/cadp_hostinfo Nature: The "cadp_hostinfo" tool was modified to avoid intermittent blockings that occurred on a Linux cluster with biprocessor nodes. BUG FIX Number: 1141 Date: Mon Oct 9 10:43:07 MEST 2006 Author: David Champelovier (INRIA/VASY) Files: com/bcg_open Nature: Following the change described in item #1129 above, a residual bug (missing backslash) was fixed in the bcg_open script. This bug caused warnings of the form > .../bcg_open: line 1: "/common/Cadp"/com/arch: > No such file or directory IMPROVEMENT Number: 1142 Date: Tue Oct 10 11:49:02 MEST 2006 Author: Hubert Garavel (INRIA/VASY) Files: src/com/cadp_cc Nature: From now on, CADP will use "cc" (instead of "gcc") as the default C compiler on Solaris systems. IMPROVEMENT Number: 1143 Date: Tue Oct 10 12:15:24 MEST 2006 Author: Hubert Garavel (INRIA/VASY) Files: INSTALLATION_2, INSTALLATION_WINDOWS Nature: The installation guidelines have been updated and simplified to get rid of obsolete platforms (architectures and operating systems). In particular, compared to the previous stable version CADP 2001, the following platforms are no longer supported: - Sparc stations running Solaris 7 - PC computers running Windows 98 or Windows NT4 - PC computers running Linux with kernel version <= 2.2 and/or glibc version < 2.3 It may happen that recent versions of CADP still work on some of these old architectures, but we do not make statements on this, as we have discontinued testing CADP on these platforms. IMPROVEMENT Number: 1144 Date: Wed Oct 11 15:38:10 MEST 2006 Author: Radu Mateescu (INRIA/VASY) Files: doc/=READ_ME.txt, doc/biblio.bib, doc/*/Mateescu-Sighireanu-00.*, doc/*/Mateescu-Sighireanu-03.*, doc/*/Mateescu-06-b.* Nature: The paper Mateescu-Sighireanu-00 (24 pages) was replaced with Mateescu-Sighireanu-03 (32 pages), which provides the most complete reference on EVALUATOR 3.0 (please note that, for EVALUATOR 3.5, the reference paper is Mateescu-06-a). Also, a new case-study paper, Mateescu-06-b, was added. IMPROVEMENT Number: 1145 Date: Wed Oct 11 17:37:23 CEST 2006 Report: Wendelin Serwe (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: src/com/cadp_psbox, src/com/cadp_web Nature: The "cadp_psbox" and "cadp_web" have been modified so as to fetch "gs" and "mozilla" in "/usr/sfw/bin". This is suitable on Solaris 10 systems. IMPROVEMENT Number: 1146 Date: Wed Oct 11 19:13:27 MEST 2006 Authors: Hubert Garavel, Radu Mateescu, and Wendelin Serwe (INRIA/VASY) Files: doc/pdf/*.pdf Nature: Many PDF files (those corresponding to INRIA research reports) have been reformatted, so as to obtain a well-centered title page. IMPROVEMENT Number: 1147 Date: Tue Oct 17 11:49:48 MEST 2006 Report: David Champelovier (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: INSTALLATION_2 Nature: The installation guidelines for Windows have been updated to specify that the CADP software must be installed on the same disk as the Windows operating system itself. Usually, Windows is installed on "C:", so should be CADP (installing CADP on another disk, such as "E:" will not work). IMPROVEMENT Number: 1148 Date: Tue Oct 17 18:56:42 MEST 2006 Author: Frederic Lang (INRIA/VASY) Files: doc/*/Lang-06.*, doc/=READ_ME.txt, doc/biblio.bib Nature: A new paper on refined interface generation using EXP.OPEN and SVL was added in the "doc" directory of the CADP toolbox. BUG FIX Number: 1149 Date: Fri Oct 20 14:22:24 MEST 2006 Report: David Champelovier (INRIA/VASY) Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: com/bcg_draw, com/bcg_info, com/bcg_open, com/caesar.open, com/exp.open, com/seq.open, com/svl, com/tst, src/com/cadp_basename, src/com/cadp_edit, src/com/xeuca_convert, src/svl/standard Nature: Under Solaris, SVL did not detect the presence of ".err" error files generated by CAESAR.ADT and CAESAR if the "basename" command found in the $PATH was "/usr/bin/basename" instead of "/usr/ucb/basename" or "/usr/xpg4/basename". This was caused by the fact that "/usr/bin/basename" interprets its second argument as a regular expression, not a string. This bug was fixed. A new shell-script "cadp_basename" was added, which addresses this issue by ensuring that "/usr/bin/basename" will not be invoked on Solaris. Consequently, all the CADP shell scripts have been modified to invoke "cadp_basename" instead of "basename" whenever needed. The "tst" shell-script has been enhanced to emit a warning if neither "/usr/ucb/basename" nor "/usr/xpg4/basename" are available on a Solaris machine. BUG FIX Number: 1150 Date: Mon Oct 23 10:08:10 MEST 2006 Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: com/tst Nature: The "tst" shell-script was modified to avoid an error on Solaris machines working with a non-English language (e.g., French-speaking versions of Solaris). IMPROVEMENT Number: 1151 Date: Mon Oct 23 11:41:03 MEST 2006 Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: INSTALLATION_2, com/tst, com/installator Nature: The installation directives have been simplified: it is no longer required to set the $LD_LIBRARY_PATH variable on Solaris machines (Sun's documentation even discourages using $LD_LIBRARY_PATH in production software, as this can result in an overall performance degradation). The checks performed by the "tst" shell-script regarding the setting of $LD_LIBRARY_PATH have been adapted accordingly. The "installator" shell-script was also modified. BUG FIX Number: 1152 Date: Wed Oct 25 15:12:17 MEST 2006 Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: com/upc, src/com/cadp_cc, src/com/cadp_indent, src/com/cadp_postscript, src/com/cadp_psbox, src/com/cadp_web Nature: A minor bug was fixed in several CADP shell-scripts (variable $PATH was set but not exported). BUG FIX Number: 1153 Date: Thu Oct 26 14:46:49 MEST 2006 Report: Reza Pulungan (Saarland University, Germany), Jan Friso Groote (Technical Univ. Eindhoven, The Netherlands) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: com/tst Nature: The "tst" shell script was enhanced in four ways: - On Solaris, when $CADP_CC is not set and "/opt/SUNWspro/bin" is not in the $PATH, "tst" no longer emits an error message "cc" not found". - When "$CADP/com" and/or "$CADP/bin.*" are missing from the $PATH, "tst" no longer emits a sequence of warnings of the form: > *** The tool ``bcg_draw'' is not searched in ``$CADP/com'' > but in ``'' instead > You might have two versions of CADP installed > ==> Reorder your ``$PATH'' variable to have ``$CADP/com'' > first and remove all obsolete versions of CADP, if any - On Windows, "tst" now detects the case where "$CADP" contains a Cygwin-specific mount point (such as "/cygdrive/c/...") and emits a warning message, as CADP programs will not understand Cygwin conventions because they are pure Win32 applications. - On Opteron machines running Linux, "tst" now emits a proper warning message if the 32-bit developement library is not installed. BUG FIX Number: 1154 Date: Thu Oct 26 16:12:22 MEST 2006 Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard Nature: The "standard" shell-script for SVL was modified to avoid a bug that occurs with the Solaris "test" command, which fails when executing the following command: A="(" ; if test "$A" = "("; then echo 0; fi Note that this problem does not occur on Linux. BUG FIX Number: 1155 Date: Thu Oct 26 18:57:43 MEST 2006 Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: com/rfl Nature: The "rfl" shell-script was modified so as to remove all "r" characters that remained in license files generated on Windows. IMPROVEMENT Number: 1156 Date: Fri Oct 27 17:06:23 MEST 2006 Report: Tomas Barros (Universidad Diego Portales, Santiago, Chile) Authors: Hubert Garavel, Frederic Lang, and Marie Vidal (INRIA/VASY) Files: bin.*/bcg_labels, man/*/bcg_labels.*, src/eucalyptus/eucalyptus.tcl Nature: Two new options "-parse" and "-unparse" have been added to BCG_LABELS. See the corresponding man page for details. The EUCALYPTUS graphical interface was enhanced so as to give access to these options. Additionally, a mistake was fixed in EUCALYPTUS: when clicking on "Disable parsing of BCG labels", TGV was invoked with "-parse" option instead of "-unparse". This issue was fixed. BUG FIX Number: 1157 Date: Mon Oct 30 10:17:08 MET 2006 Report: Juan Jose Sanchez Penas (University of Corunha, Spain) Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: src/eucalyptus/eucalyptus.tcl Nature: On computer screens with 1024x768 pixels only (such as 14'' laptops screens), the "Reduce" window of EUCALYPTUS (for labelled transitions systems) was too high; thus, the "OK" button located at the window bottom could not be accessed. the contents of this window have been compacted so as to reduce its height. BUG FIX Number: 1158 Date: Mon Oct 30 11:10:03 MET 2006 Report: Radu Mateescu (INRIA/VASY) Author: Marie Vidal (INRIA/VASY) Files: ./src/bcg_draw/bcg_draw_header.ps Nature: Using BCG_EDIT, there was a problem with arrow heads inclined at 45 degrees exactly: the arrow heads would disappear in a random way, from the screen and/or printed PostScript material. This issue (an incorrect test to decide whether two vertices overlap or not) was solved. IMPROVEMENT Number: 1159 Date: Mon Oct 30 12:36:34 MET 2006 Report: David Champelovier (INRIA/VASY) Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: com/tst, com/upc, src/com/cadp_echo, src/svl/standard Nature: Under Solaris, the command "/bin/echo" has a different behaviour than "echo" on all other architectures supported by CADP: it does not understand the "-n" option (see items #433 and #435 above) and interprets octal characters such as '015'. But its exists a Solaris command, "/usr/ucb/echo" with the desired behaviour. A new shell-script "cadp_echo" was added, which addresses this issue by ensuring that "/usr/ucb/echo" will used when needed. A few CADP shell scripts have been modified to invoke "cadp_echo" instead of "echo". The "tst" shell-script has been enhanced to emit a warning if "/usr/ucb/echo" is missing from a Solaris machine. IMPROVEMENT Number: 1160 Date: Thu Nov 16 19:18:00 MET 2006 Report: Yaroslav Usenko (Technical Univ. of Eindhoven, The Netherlands) Author: Hubert Garavel (INRIA/VASY) Files: src/com/cadp_postscript Nature: Support for the Evince PostScript viewer has been added to BCG_DRAW and BCG_EDIT. BUG FIX Number: 1161 Date: Thu Nov 30 12:30:38 MET 2006 Author: David Champelovier (INRIA/VASY) Files: incl/X_ACTION.h, incl/X_BIT.h, incl/X_BOOLEAN.h Nature: A minor bug was fixed in the include files that implement LOTOS sorts directly in C. The following macro-definitions #define CAESAR_ADT_BITS_ACTION : 1 #define CAESAR_ADT_BITS_BIT : 1 #define CAESAR_ADT_BITS_BOOL : 1 have been replaced with #define CAESAR_ADT_BITS_ADT_ACTION : 1 #define CAESAR_ADT_BITS_ADT_BIT : 1 #define CAESAR_ADT_BITS_ADT_BOOL : 1 BUG FIX Number: 1162 Date: Thu Nov 30 12:41:58 MET 2006 Author: David Champelovier (INRIA/VASY) Files: incl/X_ACTION.h, incl/X_BIT.h, incl/X_BOOLEAN.h Nature: The three following C types implementing external LOTOS sorts: ADT_ACTION, ADT_BIT, and ADT_BOOL have been implemented as "unsigned char" instead of "char". BUG FIX Number: 1163 Date: Thu Nov 30 12:52:52 MET 2006 Author: David Champelovier (INRIA/VASY) Files: src/com/cadp_which Nature: Due to a bug in the "cadp_which" shell-script (the "macOS" architecture was incorrectly handled as "sun5" whereas it should be handled as "iX86"), the "tst" command would emit strange error messages if Ghostview was not installed: $CADP/src/com/cadp_which: line 1: type: gs: not found BUG FIX Number: 1164 Date: Thu Nov 30 13:08:31 MET 2006 Report: Christophe Joubert (University of Malaga, Spain) Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: src/com/cadp_shell, com/tst Nature: On Linux systems for which the standard shell "/bin/sh" is a link to "dash" instead of "bash" (e.g., Linux Ubuntu Edgy 6.10 or Linux Kubuntu Edgy 6.10), the Installator assistant would freeze on its first screen (the "Next" button not being clickable). This problem was solved. Additionally, the "tst" shell-script was modified to display the system shell (sh, bash, dash, etc.). BUG FIX Number: 1165 Date: Thu Nov 30 16:20:14 MET 2006 Authors: Radu Mateescu and Gwen Salaun (INRIA/VASY) Files: demos/demo_40/commerce_p2.mcl, demos/demo_40/negociation_p2.mcl Nature: Two mu-calculus formulas for demo_40 (Web service) have been corrected (previously, these formulas always evaluated to true). BUG FIX Number: 1166 Date: Mon Dec 11 17:40:22 MET 2006 Author: Radu Mateescu (INRIA/VASY) Files: demos/demo_24/co4.lotos Nature: A minor bug (extra ".lib" suffix in a "library" ... "endlib" directive) was fixed in file "co4.lotos". VERSION 2006 "Edinburgh" Copyright (C) INRIA 2007 - Tous droits réservés - All Rights Reserved. Back to the CADP Home Page
The VASY team of INRIA Rhone-Alpes is pleased to announce the availability of a new release of the CADP toolbox.
The new version of CADP is named 2006 "Edinburgh" and dated December 12, 2006. It supersedes all previous versions of CADP.
We are happy to dedicate CADP 2006 "Edinburgh" to Laboratory for Foundations of Computer Science at the University of Edinburgh, as a tribute to their achievements in concurrency theory.
This is a brief chronology of past events:
The new release CADP 2006 "Edinburgh" delivers a total of 150 bug fixes and 245 improvements. In particular, it introduces 15 new tools and libraries: BCG_GRAPH, BCG_MERGE, BCG_STEADY, BCG_TRANSIENT, BISIMULATOR, CAESAR.BDD, CAESAR 7.0, CAESAR_SOLVE, DETERMINATOR, DISTRIBUTOR, EVALUATOR 3.5, EXP.OPEN 2.0, PROJECTOR 2.0, REDUCTOR 5.0, and SEQ.OPEN, which we present hereafter.
A new tool named BCG_GRAPH was added to CADP. BCG_GRAPH generates several useful kinds of automata in the BCG format, such as bags, FIFO queues, and chaos automata.
A new tool named BCG_MERGE was added. Designed to work in conjunction with the DISTRIBUTOR tool for distributed LTS generation, BCG_MERGE takes as input a partitioned BCG graph (PBG) and produces a single BCG file combining the various LTS fragments listed in the PBG file. The LTS fragments are encoded themselves as BCG files and possibly located on remote machines, the list of which is indicated in a grid configuration file (GCF) referenced in the PBG file. BCG_MERGE renumbers the states contained in the BCG files containing the LTS fragments in order to obtain a contiguous numbering starting at 0 in the final BCG file. The tool is equipped with a graphical window to monitor the LTS generation in real-time.
A new tool named BCG_STEADY was added. Jointly developed by the VASY team and Holger Hermanns (University of Saarbrücken), BCG_STEADY performs steady-state analysis of an (extended) continuous-time Markov chain encoded in the BCG format.
A new tool named BCG_TRANSIENT was added. Jointly developed by the VASY team and Holger Hermanns (University of Saarbrücken), BCG_TRANSIENT performs transient analysis of an (extended) continuous-time Markov chain encoded in the BCG format.
A new tool named BISIMULATOR was added. Designed according to a modular architecture, BISIMULATOR is an on-the-fly equivalence checker comparing two LTSs modulo a given equivalence or preorder relation. The tool currently provides seven equivalence relations and their associated preorders: strong, branching, observational, tau*.a, safety, trace, and weak trace. BISIMULATOR works by translating the verification problem in terms of the on-the-fly resolution of a boolean equation system, which is performed using the algorithms provided by the CAESAR_SOLVE library. When the two LTSs compared are not equivalent, the tool generates a negative diagnostic (counterexample) in the form of an acyclic graph containing distinguishing transition sequences. Optionally, for branching and observational equivalences, on-the-fly reduction by tau-confluence can be applied on the larger LTS, leading in certain cases to significant gains (two orders of magnitude) in speed and memory. Compared with the older equivalence checker ALDEBARAN, BISIMULATOR exhibits better performances, generates more compact counterexamples, implements a richer set of equivalences and preorders on-the-fly, and is available for any language equipped with an OPEN/CAESAR-compliant compiler.
CAESAR 7.0 is a compiler for the behaviour part of LOTOS. Among other improvements, CAESAR 7.0 implements a static analysis based on live variable analysis, which assigns a canonical value to variables that are no longer used, thus avoiding to distinguish states that only differ by values of variables not used in the future. Compared to its previous version 6.2, CAESAR 7.0 can reduce LTS size by several orders of magnitude (e.g., 10^4), thus allowing larger LOTOS specifications to be handled.
A new tool named CAESAR.BDD was added. CAESAR.BDD uses Binary Decision Diagrams to perform various structural analyses on basic Petri nets, such as exploring reachable markings to determine the set of "dead" transitions and the pairs of "concurrent" units.
A new library named CAESAR_SOLVE was added to the OPEN/CAESAR environment. Dedicated to the on-the-fly resolution of boolean equation systems (BESs), the CAESAR_SOLVE library defines an application-independent representation of BESs as boolean graphs, in the same way as OPEN/CAESAR defines a language-independent representation of LTSs. The library currently provides 6 resolution algorithms, based on various exploration strategies of boolean graphs: depth-first search (with variants optimized in memory consumption for acyclic or disjunctive/conjunctive BESs), breadth-first search, etc. These algorithms also generate positive and negative diagnostics (examples and counterexamples) in the form of boolean subgraphs explaining the truth value of a given boolean variable. CAESAR_SOLVE offers 29 primitives for manipulating BESs: creation, destruction, resolution, diagnostic, reading/writing from/to textual files, displaying statistical information about the resolution, etc. It serves as as the computing engine for the EVALUATOR 3.5 model checker, the BISIMULATOR equivalence checker, and the REDUCTOR tool for on-the-fly reduction of LTSs.
A new tool named DETERMINATOR was added. Jointly developed by the VASY team and Holger Hermanns (University of Saarbrücken), DETERMINATOR takes as input an (extended) continuous-time Markov chain encoded in the BCG format and tries to extract on-the-fly a pure continuous-time Markov chain (i.e., containing only stochastic transitions). Doing so, the tool checks a sufficient condition ensuring that the resulting continuous-time Markov chain is unique, or returns an error otherwise.
A new tool named DISTRIBUTOR was added. Designed with the objective to scale up the capabilities of verification, DISTRIBUTOR performs distributed reachability analysis and LTS generation using several machines connected by a network. The tool can also apply on-the-fly reductions by tau-compression and tau-confluence. DISTRIBUTOR works by launching distributed processes (instances) on the local and remote machines, each instance being in charge of generating an LTS fragment. Communication is performed using standard UNIX sockets. A grid configuration file (GCF) allows to set the list of instances and their various parameters (machine and user account, working directory, size of communication buffers, connection timeout, input files to be copied, connection port, file transfer and launching commands, etc.). The result of the distributed generation is a partitioned BCG graph (PBG) consisting of a collection of BCG files, each one containing an LTS fragment generated by an instance. These fragments can be recombined using the BCG_MERGE tool in order to obtain a unique BCG file containing the entire LTS. DISTRIBUTOR is equipped with a graphical window monitoring in real-time the distributed LTS generation, by displaying the number of visited, explored, and remaining states, the set of labels encountered, the memory and CPU usage, etc.
An enhanced version 3.5 of the EVALUATOR on-the-fly model checker for regular alternation-free mu-calculus was added. This tool works by translating the model checking problem into the on-the-fly resolution of a boolean equation system. EVALUATOR 3.5 supersedes the former version EVALUATOR 3.0 and brings several enhancements:
A new tool named EXP.OPEN 2.0 was added. This tool maps a network of communicating LTSs onto the OPEN/CAESAR Application Programming Interface, thus allowing the product LTS corresponding to the network to be explored on-the-fly. In the network, the communicating LTSs can be composed using synchronization vectors, parallel composition operators (borrowed from CCS, CSP, mCRL, LOTOS, and E-LOTOS), and/or generalized hide, rename, and cut operators (that support representations of labels using either strings or regular expressions). EXP.OPEN 2.0 implements several partial order reductions preserving various equivalence relations, such as branching equivalence, stochastic branching equivalence, and weak trace equivalence. It can also translate networks of communicating LTSs into various formats to interface with the PEP, TINA, and FC2 tools. It allows to synthesize an "interface" expressing the synchronization constraints imposed on one LTS by (a subset of) its neighbour LTSs in the network. Compared with the older tool EXP.OPEN 1.0, EXP.OPEN 2.0 uses about 2 times less memory and runs from 1.5 to 45 times faster.
A new tool named PROJECTOR 2.0 was added. This tool allows to constrain an LTS (represented using the OPEN/CAESAR API) on-the-fly with respect to interface constraints represented by another LTS and a set of synchronizing labels. Among its new features, PROJECTOR 2.0 allows to describe the set of synchronizing labels more compactly using regular expressions. It also provided a monitoring window to get real-time information. PROJECTOR 2.0 is up to 4 times faster than its previous version 1.0.
A new tool named REDUCTOR 5.0 was added. This tool allows to reduce an LTS on-the-fly, either partially or totally, modulo one out of 8 relations, namely trace equivalence (which corresponds to automata determinization), weak trace equivalence, tau*.a equivalence, safety equivalence, tau-confluence, tau-compression, tau-divergence, and strong bisimulation. Some of these reductions are performed by solving a boolean equation system on-the-fly using the algorithms provided by the CAESAR_SOLVE library. REDUCTOR 5.0 also allows to display the equivalence classes of the quotient graph modulo strong bisimulation. The closure algorithm used by tau*.a, safety, and weak trace reductions to eliminate invisible transitions has a lower average complexity than in earlier versions of REDUCTOR.
A new tool named SEQ.OPEN was added. This tool is an OPEN/CAESAR-compliant compiler that maps a ".seq" file (encoded in the SEQUENCE format of CADP) onto the OPEN/CAESAR API, thus allowing all OPEN/CAESAR tools (e.g., OCIS, EVALUATOR, etc.) to be applied to this ".seq" file. SEQ.OPEN implements an optimized representation of ".seq" files as LTSs, by encoding states and labels as file offsets and using a hash-based cache for labels and transitions in order to avoid storing entire ".seq" files in main memory. For instance, SEQ.OPEN can be used to model check mu-calculus formulas on large run-time traces generated by the simulation of hardware designs. Compared to the alternative approach of converting the ".seq" file into a BCG file (using BCG_OPEN) and then applying the OPEN/CAESAR tool on the resulting BCG file (using BCG_OPEN), SEQ.OPEN is significantly more efficient (up to 50 times faster on large ".seq" files).
Besides introducing new tools, CADP 2006 "Edinburgh" also brings significant improvements to existing tools:
CADP 2006 "Edinburgh" can be used on the following computers/operating systems:
Sun stations (Sparc processors) running Solaris 8 or higher with a C compiler (such as Sun Studio 11 "cc" compiler or the GNU "gcc") and the Ghostview software
PC computers (i386-like processors) running Linux (kernel version >= 2.4, glibc version >= 2.3)
PC computers (i386-like processors) running Windows 2000 or XP with the Cygwin and Ghostscript/Gsview software installed (details)
Apple computers (PowerPC processors) running Mac OS X 10.2 or higher with the X11 and Ghostscript/Gsview software installed (details)
In principle, we maintain a strong compatibility between successive versions of CADP. However, changes are sometimes needed to allow progress. We review the changes introduced in CADP 2006 "Edinburgh":
The Windows version of CADP has been updated to cope with the evolution of the Cygwin software (see item 827). Windows-specific function definitions have also been moved from the "$CADP/bin.win32/libcaesar.a" library to the "$CADP/bin.win32/libm.a" library (see item 1009). These changes should be transparent to most users.
Multiple corrections have been brought to generated and hand-written C code so as to enable compiling with recent compilers without warnings (see item 1051, item 1077, item 1079, and item 1107).
The following scientists contributed to the development of CADP 2006 "Edinburgh":
We are extremely grateful to the following scientists, who provided us with valuable feedback and advice about the use of CADP:
Number: 771 Date: Tue Aug 28 16:34:50 MEST 2001 Author: Hubert Garavel (INRIA/VASY) Files: bin.sun4, games/bin.sun4, gc/bin.sun4, tcl-tk/bin.sun4, INSTALLATION, INSTALLATION_2, INSTALLATION_4. Nature: The "sun4" architecture will no longer be supported after CADP 2001 "Ottawa": consequently, SunOS 4.1.* binaries have been removed from the CADP distribution. The installation files have been updated accordingly.
Number: 772 Date: Tue Aug 28 17:59:11 MEST 2001 Authors: Hubert Garavel, Bruno Ondet, Frederic Perret (INRIA/VASY) Files: demos/demo_19/graphics/doc/*.{ps,pdf}, demos/demo_25/cfs.{ps,pdf}, demos/demo_25/=READ_ME.txt, doc/=READ_ME.txt, doc/dvi/*.dvi, doc/ps, doc/pdf, man/pdf, man/*/projector.*, man/*/caesar.adt.*, man/*/svl.*, src/com/cadp_postscript, src/eucalyptus/eucalyptus.tcl Nature: The PostScript documents of the CADP distribution are now also available in Adobe's PDF format. This required many changes: - In the "demos" directory: PDF files have been added for demos 19 and 25 and the existing PostScript files have been compressed in order to save space. - In the "doc" directory: all PostScript documents for which we had the LaTeX source available have been regenerated using vectorial fonts instead of bitmap fonts; the PDF files have been added; the existing documents have been organized in three sub-directories named doc/dvi, doc/ps, and doc/pdf; PostScript files have been compressed. - In the "man" directory: a new sub-directory named man/pdf has been added; the manual pages referring to PostScript files named doc/*.ps have been updated. - The shell-script src/com/cadp_postscript has been extended to display compressed PostScript files (with extension ".ps.Z"), which are uncompressed on the fly. - The EUCALYPTUS graphical user-interface has been extended to handle compressed PostScript files.
Number: 773 Date: Fri Aug 31 15:28:31 MEST 2001 Report: Bert Lisser (CWI, The Netherlands), Benoit Fraikin (Univ. of Sherbrooke, Canada) Author: Hubert Garavel (INRIA/VASY) Files: src/com/cadp_hostname, com/tst, com/rfl Nature: Three shell-scripts ("cadp_hostname", TST, and RFL) have been updated so as to avoid an incorrect warning emitted by "tst": License file ``$CADP/LICENSE'' exists *** No license exists for host ``xxx'' ==> Read the INSTALLATION file to apply the RFL procedure
Number: 774 Date: Wed Oct 3 17:55:33 MEST 2001 Report: Holger Hermanns (University of Twente) Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel Nature: SVL could generate ``.exp'' files containing a "hide all but" operator, which is not available for this format. This was not accepted by the tools reading the EXP format (ALDEBARAN, EXP.OPEN, etc.). The "all but" feature is at now processed correctly using the BCG_LABELS tool.
Number: 775 Date: Thu Oct 4 10:00:32 MEST 2001 Authors: Frederic Lang and Hubert Garavel (INRIA/VASY) Files: com/svl, bin.*/svl_kernel, src/svl/standard Nature: Option -sh of SVL was not working properly (shell options passed to SVL were ignored). This problem was fixed. Also, all warnings and error messages issued by SVL have been rewritten in order to be simpler and self-explanative.
Number: 776 Date: Mon Oct 15 18:48:52 MEST 2001 Authors: Hubert Garavel (INRIA/VASY) and Holger Hermanns (Univ. Twente) Files: man/*/bcg_min.* Nature: The manual page of BCG_MIN was modified to be compatible with the BCG_MIN tool: when option "-rate" is selected, BCG_MIN will check for conflicts between "rate" and hidden transitions (and remove conflicting "rate" transitions) if the "-branching" option is selected (when the "-strong" option is selected, no such checking is done).
Number: 777 Date: Thu Oct 18 15:54:17 MEST 2001 Report: Thomas Arts (Ericsson, Sweden) Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard, bin.*/svl_kernel Nature: When processing an instruction of the form: "file.bcg" = rename A -> B in "file.aut" SVL would generate "file.bcg" and remove it afterwards. SVL was designed under the assumption that two files with the same prefix would necessarily represent LTSs with the same behavior. Hence, if "file.aut" had to be converted to the BCG format, then the converted graph was stored in "file.bcg", but still considering that "file.bcg" was a temporary file that should be removed when SVL terminates. Although documented in the SVL manual, this assumption proved to be over-constraining, as users may ignore SVL conventions or forget about them. To avoid user files from being removed or modified accidentally, this assumption has been abandoned in the new version of SVL, in which every temporary file is given a unique name.
Number: 778 Date: Thu Oct 25 17:58:11 MEST 2001 Report: Holger Hermanns (University of Twente) Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel Nature: Strings enclosed in quotes were converted to uppercase. This has been changed since it did not satisfy the specification of SVL.
Number: 779 Date: Mon Nov 19 11:15:18 MET 2001 Report: Thomas Arts (Ericsson, Sweden) Authors: Frederic Lang and Hubert Garavel (INRIA/VASY) Files: com/svl, man/*/svl.*, src/eucalyptus/eucalyptus.tcl Nature: SVL scripts can now be parameterized with arguments passed on the command line when the SVL compiler is invoked. These parameters are referred to using the classical notations: $#, $*, $@, $1, $2, etc., exactly as in Bourne shell scripts. The EUCALYPTUS graphical user-interface was modified: when an SVL script is to be executed, a window opens, in which it is possible to input the aforementioned parameters.
Number: 780 Date: Mon Nov 19 16:28:20 MET 2001 Author: Frederic Lang (INRIA/VASY) Files: demos/demo_20/=READ_ME.txt, demos/demo_27/=READ_ME.txt Nature: The =READ_ME.txt files of demos 20 and 27 have been extended with performance tables for compositional verification.
Number: 781 Date: Thu Nov 22 12:06:30 MET 2001 Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: bin.*/bcg_io, bin.*/libBCG_IO.a, man/*/bcg_io.*, src/eucalyptus/eucalyptus.tcl Nature: A new option ``-graphviz'' was added to BCG_IO in order to produce the ``.dot'' format needed by ATT's graph visualization package GRAPHVIZ. This offers to CADP users a new mean to visualize BCG graphs, in addition to the advanced capabilities already provided by BCG_DRAW and BCG_EDIT. In the EUCALYPTUS graphical user-interface, this functionality is now accessible using the "Convert" item in contextual menus.
Number: 782 Date: Thu Jan 17 18:56:17 MET 2002 Authors: Hubert Garavel, Frederic Lang, and Radu Mateescu (INRIA/VASY) Files: doc/*/Garavel-Mateescu-Smarandache-01.*, doc/*/Garavel-Lang-Mateescu-01.*, doc/*/Garavel-Lang-Mateescu-02.*, doc/*/Lang-02.*, doc/=READ_ME.txt Nature: A revised version of the Garavel-Mateescu-Smarandache-01 paper has been installed in the "doc" directory. Three new papers (on CADP 2001, SVL, and LOTOS NT respectively) have also been added.
Number: 783 Date: Fri Jan 18 18:47:41 MET 2002 Author: Hubert Garavel (INRIA/VASY) Files: bin.*/des2aut, bin.*/READ_ME, man/*/des2aut.* Nature: As foreseen (see item #729 above), the Des2Aut tool has been removed, since Des2Aut is superseded by SVL entirely.
Number: 784 Date: Thu Apr 4 10:36:30 MEST 2002 Report: Solofo Ramangalahy (BULL) Author: Hubert Garavel (INRIA/VASY) Files: com/caesar.open Nature: A bug was fixed in the "caesar.open" shell-script, which prevented the "-include" option from working correctly.
Number: 785 Date: Thu Apr 4 12:54:09 MEST 2002 Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard Nature: The string prefixing failure labels in PROJECTOR and EXP.OPEN had changed from ":fail:" to ":FAIL:". The change has now been passed on to SVL, checking the presence of ":FAIL:" in LTSs generated compositionally using abstraction.
Number: 786 Date: Wed Apr 10 10:27:36 MEST 2002 Author: Hubert Garavel (INRIA/VASY) Files: bin.*/libcaesar.a Nature: Various enhancements have been brought to OPEN/CAESAR's "caesar_table_1" library: - Function CAESAR_PRINT_TABLE_1() now displays statistics about the average, minimal, and maximal length of collision lists. - When the user specifies a maximal number of elements in the table (by giving to the parameter CAESAR_LIMIT_SIZE of CAESAR_CREATE_TABLE_1() a value different from zero), changes were made to reduce the number of pages, the size of pages, and the number of hash table entries. For tables with few elements, the gain in memory can be up to 75,000 bytes per table, together with a noticeable gain in speed.
Number: 787 Date: Mon Apr 15 17:11:43 MEST 2002 Author: Radu Mateescu (INRIA/VASY) Files: doc/*/mateescu-02.* Nature: A new paper on EVALUATOR has been added to the CADP release.
Number: 788 Date: Fri Apr 19 18:34:24 MEST 2002 Report: Arnaud Gavara (Ecoles des Mines de Nancy, France) Author: Hubert Garavel (INRIA/VASY) Files: com/rfl Nature: In some cases (depending on the environment variable LC_ALL), the RFL command could generate an invalid license file, in which the dates were not expressed in English. This problem was solved.
Number: 789 Date: Mon Apr 22 18:50:09 MEST 2002 Author: Hubert Garavel (INRIA/VASY) Files: bin.*/cadp_memory, com/swapsize, INSTALLATION_2, src/com/open_caesar/predictor.c, man/*/predictor.l Nature: The "com/swapsize" command has been replaced by an improved version named "bin.*/cadp_memory". This new version brings support for the Windows operating system; it also gives more accurate results for Solaris and Linux; finally, it takes into account the new environment variable $CADP_MEMORY described in the updated version of file INSTALLATION_2. The PREDICTOR tool of OPEN/CAESAR has been modified to use "cadp_memory" instead of "swapsize". Its manual page has been updated.
Number: 790 Date: Tue Apr 23 09:35:26 MEST 2002 Author: Hubert Garavel (INRIA/VASY) Files: bin.*/cadp_hostinfo, bin.*/hostinfo, com/rfl, com/tst, src/eucalyptus/eucalyptus.tcl Nature: To avoid conflicts with other software, the program "hostinfo" in directory $CADP/bin.* has been renamed into "cadp_hostinfo". The RFL, TST, and EUCALYPTUS tools have been updated accordingly.
Number: 791 Date: Tue Apr 30 09:12:56 MEST 2002 Author: Hubert Garavel (INRIA/VASY) Files: incl/caesar_*.h, bin.*/libcaesar.a, bin.*/libbcg_open.a, bin.*/caesar, bin.*/exp2c, bin.*/libseq_open.a, man/*/caesar_standard.*, doc/*/Garavel-92-a.* Nature: The OPEN/CAESAR include files (contained in $CADP/incl) have been enhanced in several respects: - The C function prototypes have been activated in order to enable C++ compiling. - A bug was fixed in file "caesar_diagnostic_1.h" regarding the type of the first arguments of the two functions CAESAR_CREATE_DIAGNOSTIC_1() and CAESAR_DELETE_DIAGNOSTIC_1() which are of type (CAESAR_TYPE_DIAGNOSTIC_1 *) instead of CAESAR_TYPE_DIAGNOSTIC_1. - The "caesar_graph.h" file was modified to ensure that types CAESAR_TYPE_STATE and CAESAR_TYPE_LABEL are systematically defined, since these types are used in function prototypes (such as CAESAR_COMPARE_STATE()). - All OPEN/CAESAR compliant compilers (i.e., BCG_OPEN, CAESAR, EXP.OPEN, and SEQ.OPEN) have been updated so as not to define CAESAR_TYPE_STATE and CAESAR_TYPE_LABEL any longer, but instead to import the definitions present in file "caesar_graph.h" (this requires to set, in the C code generated or used by these compilers, the macro CAESAR_GRAPH_IMPLEMENTATION to an integer number expressing the current OPEN/CAESAR version number). - The "caesar_graph" manual page was updated to explain how to define the CAESAR_GRAPH_IMPLEMENTATION macro and the CAESAR_TYPE_STATE and CAESAR_TYPE_LABEL types.
Number: 792 Date: Tue Apr 30 20:37:14 MEST 2002 Report: Jack Abily and Solofo Ramangalahy (BULL) Author: Hubert Garavel (INRIA/VASY) Files: incl/caesar_kernel.h, bin.*/caesar Nature: The C function prototypes contained in file "caesar_kernel.h" file, which defines the EXEC/CAESAR API, have been activated. Also, file "caesar_kernel.h" now defines the CAESAR_TYPE_STATE and CAESAR_TYPE_LABEL types, in the same way as for file "caesar_graph.h" (see item #791 above). The C code generated by CAESAR with option "-exec" has been updated to reflect these changes.
Number: 793 Date: Tue May 21 15:24:19 MEST 2002 Report: Hubert Garavel (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard, bin.*/svl_kernel, man/*/svl.l Nature: It is now possible to use shell variables in process calls. To this aim, process calls can be written between quotes. Examples: (1) % for PROC in RECEIVER TRANSMITTER MEDIUM1 MEDIUM2 % do "$PROC.bcg" = generation of "bitalt.lotos":"$PROC" % done generates in turn the graphs of "bitalt.lotos":RECEIVER, "bitalt.lotos":TRANSMITTER, "bitalt.lotos":MEDIUM1, and "bitalt.lotos":MEDIUM2. (2) % for PROC in P1 P2 % do % for GATE in SEND RECV % do "$PROC_$GATE.bcg" = generation of "spec.lotos":"$PROC [$GATE]" % done % done generates in turn the graphs of "spec.lotos":P1 [SEND], "spec.lotos":P1 [RECV], "spec.lotos":P2 [SEND], and "spec.lotos":P2 [RECV]. Similarly, gates (occurring in parallel composition, semi- composition operators, and process calls) and process identifiers can now be specified using shell variables (enclosed between double quotes). In Example (2) above, "$PROC [$GATE]" can equivalently be written "$PROC" ["$GATE"]. In particular, it is now possible to parameterize parallel composition expressions, as in the following SVL script: "result.bcg" = "$1.bcg" |[ "$3" ]| "$2.bcg" (* usage : svl arg1 arg2 arg3 * where arg1 and arg2 are two BCG graphs to compose in * parallel, and arg3 denotes the gates on which these * graphs must be synchronized. For instance, * svl file1 file2 "G1, G2" * computes "file1.bcg" |[G1, G2]| "file2.bcg" *)
Number: 794 Date: Fri May 31 11:13:44 MEST 2002 Authors: Hubert Garavel and Bruno Ondet (INRIA/VASY) Files: INSTALLATION_0, INSTALLATION_2, cadp_cygwin.com com/tst, src/com/cadp_postscript, src/com/cadp_psbox Nature: The directives for installation have been updated to take into account the recent versions of Cygwin, GhostScript, and Gsview, and to mention that ".profile" rather than ".bashrc" should be used as the startup file. The "tst" command has been updated to report when an existing ".bashrc" file should be renamed into ".profile", and to reflect the fact that recent versions of Cygwin (1.3.10 and beyond) come with a "/bin/indent" command.
Number: 795 Date: Thu Jun 6 11:31:57 MEST 2002 Report: Clara Benac Earle (University of Kent at Canterbury, UK) Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard Nature: ALDEBARAN might take a lot of memory when minimizing for the safety equivalence minimization ("-smin" option). In the case of abstraction interface graphs, when this minimization failed, SVL did not try to apply minimization for stronger equivalence first, before applying safety minimization. This was fixed: the safety minimization of abstraction interfaces now invokes the advanced minimization function of SVL, i.e., if ALDEBARAN fails, SVL will invoke first BCG_MIN with a stronger equiva- lence than safety, and later retry ALDEBARAN on the minimized graph.
Number: 796 Date: Fri Jun 7 15:21:12 MEST 2002 Authors: Hubert Garavel and Bruno Ondet (INRIA/VASY) Files: bin.*/caesar Nature: The maximal number of states that can be stored by CAESAR was increased from 16,777,216 (i.e., 2^24) up to 4,294,967,296 (i.e., 2^32). On Intel-based machines (architectures "iX86" and "win32"), accesses have been made faster by using word operations instead of byte operations.
Number: 797 Date: Tue Jun 25 09:19:03 MEST 2002 Report: Vincent Bories-Azeau (CNES, Toulouse) and Gilles Stragier (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: incl/bcg_*.h Nature: C function prototypes have been added to all BCG functions declared in the "bcg_*.h" include files. This enables programs written in C++ to invoke the BCG primitives.
Number: 798 Date: Tue Jun 25 18:50:22 MEST 2002 Report: Salem Derisavi (Univ. of Illinois at Urbana/Champaign, USA) Authors: Holger Hermanns (Univ. of Sarrebruck, Germany) and Hubert Garavel (INRIA/VASY) Files: bin.*/bcg_min Nature: A bug in BCG_MIN was discovered: when minimizing certain stochastic systems, the reduced Markov chain produced by BCG_MIN was not always minimal (i.e., in some cases, it did not satisfy the strong lumping condition). This problem was fixed.
Number: 799 Date: Fri Jun 28 11:10:55 MEST 2002 Authors: Hubert Garavel and Bruno Ondet (INRIA/VASY) Files: bin.*/bcg_io, bin.*/libBCG_IO.a, man/*/bcg_io.*, src/eucalyptus/eucalyptus.tcl Nature: Two new options ``-gml'' and ``-vcg'' were added to BCG_IO in order to produce the ``.gml'' and ``.vcg'' formats needed by the graph drawing tools TULIP and VCG (for more information see http://dept-info.labri.u-bordeaux.fr/~auber/projects/tulip and http://rw4.cs.uni-sb.de/~sander/html/gsvcg1.html respectively). This provides two new ways to visualize BCG graphs, in addition to BCG_DRAW and BCG_EDIT, and to the Graphviz connection (see above #781). In the EUCALYPTUS graphical user-interface, this functionality is now accessible using the "Convert" item in contextual menus.
Number: 800 Date: Sat Jun 29 10:41:33 MEST 2002 Report: Jack Abily and Solofo Ramangalahy (BULL) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/caesar Nature: In the C code generated by CAESAR (using any option such as "-aldebaran", "-bcg", "-exec", "-open", "-simulator"), two pointers remained uninitialized (one in the table of positions and one in the table of successors), which could lead to errors (segmentation fault / core dump) on some examples. This problem was fixed.
Number: 801 Date: Thu Jul 4 19:59:46 MEST 2002 Author: Hubert Garavel (INRIA/VASY) Files: doc/*/Garavel-Hermanns-02.*, doc/=READ_ME.txt Nature: A technical report explaining how to use CADP for compositional verification and performance evaluation of probabilistic/stochastic systems was added.
Number: 802 Date: Fri Jul 19 14:27:13 MEST 2002 Report: Nicolas Stouls (LSR-IMAG, Grenoble, France) Author: Hubert Garavel (INRIA/VASY) Files: man/*/bcg_read.*, man/*/bcg_write.* Nature: The "bcg_read" and "bcg_write" manual pages have been enhanced by giving the command-line needed to compile programs making use of the "bcg_read" and "bcg_write" APIs.
Number: 803 Date: Fri Jul 19 14:41:51 MEST 2002 Report: Thierry Heuillard (France Telecom R&D) Author: Hubert Garavel (INRIA/VASY) Files: INSTALLATION_0 Nature: The directives for installing Cygwin on Windows have been enhanced in order to use the option "Use IE5 Settings" when FTP transfers must be done through a proxy.
Number: 804 Date: Fri Aug 2 20:02:26 MEST 2002 Report: Mostefa Belarbi (INSA Lyon, France) Author: Hubert Garavel (INRIA/VASY) Files: com/rfl Nature: RFL has been enhanced to check the validity of the arguments given with its options "-f", "-d", "-i", "-l", "-n", and "-a" and to emit better error messages when such arguments are missing or incorrect.
Number: 805 Date: Fri Aug 23 15:27:47 MEST 2002 Report: Pavel Burget (Czech Technical University) Author: Hubert Garavel (INRIA/VASY) Files: gc/bin.*/libgc.a Nature: The Boehm-Demers garbage collection library has been upgraded from version 5.3 to version 6.0. The version 5.3 used so far was not compatible with Linux RedHat 7.3 and would cause a segmentation fault when invoking CAESAR with "-gc" option.
Number: 806 Date: Wed Sep 4 17:08:11 MEST 2002 Author: Frederic Lang (INRIA/VASY) Files: src/installator/installator.tcl Nature: In the case where $CADP and $CADP_TMP would be located in the same disk partition (which is unfrequent on Unix, but may occur on Windows/Cygwin), INSTALLATOR would not check properly that sufficient disk space is available to install CADP, and thus could finish abruptly. This problem was fixed.
Number: 807 Date: Mon Sep 23 20:29:37 MEST 2002 Report: Pierre-Olivier Ribet (LAAS-CNRS, Toulouse, France) Authors: Nicolas Decoubes, Hubert Garavel, and Bruno Ondet (INRIA/VASY) Files: com/bcg_info, bin.*/libbcg_info*, man/*/bcg_info.*, man/*/aldebaran.* Nature: Contrary to what was stated in the ALDEBARAN manual page, the "-path" option of ALDEBARAN does not always compute the shortest path leading to a given state: for one example considered at LAAS-CNRS, ALDEBARAN produced at path with 1232 transitions whereas the shortest path has 852 transitions only. The problem has been addressed in several ways: - The manual page for ALDEBARAN was updated to mention that option "-path" does not always produce the shortest path; - The BCG_INFO tool was enhanced with a new option "-path" that computes the shortest path; see "man bcg_info" for details.
Number: 808 Date: Tue Sep 24 14:55:28 MEST 2002 Authors: Hubert Garavel and Bruno Ondet (INRIA/VASY) Files: com/bcg_info, bin.*/libbcg_info*, man/*/bcg_info.* Nature: Besides the aforementioned "-path" option, BCG_INFO was enhanced with many new options, including "-branching", "-compact", "-deadlock", "-deterministic", "-hidden", "-line", "-unreachable", and "-verbose". See "man bcg_info" for a description of these new features.
Number: 809 Date: Wed Sep 25 12:03:38 MEST 2002 Author: Hubert Garavel (INRIA/VASY) Files: com/xeuca, src/com/xeuca_man, src/eucalyptus/eucalyptus.tcl, src/eucalyptus/xeucarc_standard, man/*/xeuca.* Nature: The EUCALYPTUS graphical user interface has been updated in several respects: - To display general properties of LTSs, EUCALYPTUS now uses "bcg_info" (instead of "aldebaran -info", which is kept but only for ".exp" files). - To display the path leading to a given state (menu "Find Path to State..."), EUCALYPTUS now uses "bcg_info -path" rather than "aldebaran -path". - To search for deadlocks in LTSs, EUCALYPTUS now uses "bcg_info -deadlock" rather than "aldebaran -dead". - Two new menu entries for LTSs have been added: "Find nondeterminism..." and "Find unreachable states", which make use of the new features of BCG_INFO. - For ".aut", ".bcg", ".exp", ".fc2", and ".seq" files, the menu entry "Information" was renamed into "Properties" and moved at the bottom of the menu list. - The Eludo tool was removed from EUCALYPTUS, since the Eludo toolkit can only be used on Sparc machines running SunOS 4.1.3, whereas CADP no longer support SunOS 4.* machines.
Number: 810 Date: Fri Sep 27 15:49:10 MEST 2002 Report: Radu Mateescu (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/libcaesar.a Nature: In function CAESAR_PRINT_TABLE_1() of OPEN/CAESAR's "table_1" library, the statistics displayed for "successes" and "failures" were permuted; the correct order was restored.
Number: 811 Date: Fri Sep 27 16:26:58 MEST 2002 Report: Radu Mateescu (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/libcaesar.a Nature: Function CAESAR_COPY_EDGE_LIST(L1, L2) had a bug: when list L2 was empty, the value of *L1 was left uninitialized instead of being set to NULL. This problem was fixed.
Number: 812 Date: Fri Sep 27 17:45:04 MEST 2002 Author: Hubert Garavel (INRIA/VASY) Files: bin.*/libcaesar.a Nature: Contrary to the OPEN/CAESAR manual, the formatting function CAESAR_FORMAT_EDGE_LIST() had no effect: the ouptut of CAESAR_PRINT_EDGE_LIST() was controlled by CAESAR_FORMAT_EDGE() instead of CAESAR_FORMAT_EDGE_LIST(). This problem was solved.
Number: 813 Date: Wed Oct 2 15:21:27 MEST 2002 Report: Radu Mateescu (INRIA/VASY) Author: Laurent Mounier (VERIMAG) Files: bin.*/aldebaran Nature: A bug was corrected concerning the ``-imin'' option of ALDEBARAN (minimization modulo the tau*.a equivalence relation). On graphs larger than 65536 states, this option produced incorrect minimized graphs (not equivalent to the initial graphs modulo the tau*.a relation).
Number: 814 Date: Fri Oct 4 10:27:16 MEST 2002 Author: Hubert Garavel (INRIA/VASY) Files: incl/caesar_graph.h, man/*/caesar_graph.*, man/*/caesar_edge.*, doc/*/Garavel-92-a.*, bin.*/caesar, bin.*/libbcg_open.a, bin.*/libcaesar.a, src/open_caesar/declarator.c, src/com/cadp_decl, com/upc Nature: The CAESAR_RANK_LABEL() function was removed from OPEN/CAESAR's "caesar_graph" API, for three reasons: - This function was difficult to implement when the set of labels was not known in advance, and in absence of any particular information on the form/structure of labels. - The computations needed to implement CAESAR_RANK_LABEL(), i.e., a quick sort on the label strings, would slow down BCG_OPEN on graphs with many different labels. - Experience taught that this function, originally intended to do a pre-sorting of label lists, was in fact seldom used. Two OPEN/CAESAR compliant compilers (CAESAR and BCG_OPEN) have been updated to remove the CAESAR_RANK_LABEL() function. The EXP.OPEN tool was left unchanged since it is to be replaced later by an entirely new version. The DECLARATOR tool was updated to detect the OPEN/CAESAR compilers that still produce the CAESAR_RANK_LABEL() function. Following the removal of CAESAR_RANK_LABEL(), the function CAESAR_CREATE_EDGE_LIST() of the "casar_edge" library was modified: from now on, the cases 3 and 4 are identical to the cases 5 and 6, respectively. For cases 1 and 2, the documen- tation was improved, with explanations being made independent from LOTOS. The "upc" program was updated so as to detect and report the uses of CAESAR_RANK_LABEL() and CAESAR_CREATE_EDGE_LIST().
Number: 815 Date: Fri Oct 4 18:28:33 MEST 2002 Report: Alain Le Guennec (IRISA, Rennes, France) Author: Hubert Garavel (INRIA/VASY) Files: incl/caesar_graph.h, man/*/caesar_graph.*, doc/*/Garavel-92-a.*, bin.*/caesar, bin.*/libbcg_open.a, src/com/declarator.c, com/upc Nature: The CAESAR_DUMP_LABEL() function was removed from OPEN/CAESAR's "caesar_graph" API, for two reasons: - This function was prone to buffer overrun problems, since it is impossible to predict, in the general case, the length of the character string corresponding to a binary label; thus, it was never possible to guarantee in advance that the character string passed to CAESAR_DUMP_LABEL() would be large enough to contain the character representation of the binary label passed to CAESAR_DUMP_LABEL(). - This function was not much used, especially in comparison with CAESAR_STRING_LABEL(), which seemed to be preferred. Two OPEN/CAESAR compliant compilers (CAESAR and BCG_OPEN) have been updated to remove the CAESAR_DUMP_LABEL() function. The EXP.OPEN tool was left unchanged since it is to be replaced later by an entirely new version. The DECLARATOR tool was updated to detect the OPEN/CAESAR compilers that still produce the CAESAR_RANK_LABEL() function. The "upc" program was updated so as to detect and report any use of CAESAR_DUMP_LABEL().
Number: 816 Date: Mon Oct 7 12:14:14 MEST 2002 Author: Hubert Garavel (INRIA/VASY) Files: bin.*/caesar Nature: The code generated by CAESAR (with option "-open") for the CAESAR_STRING_LABEL() function of OPEN/CAESAR's "caesar_graph" API was optimized in the particular case of labels that consist of a gate only, without experiment offers (this encompasses the case of tau-transitions). For instance, on the alternating bit example given in "demos/demo_02" with 65 different messages, the time needed by GENERATOR to produce the corresponding BCG file was reduced from 47.4 down to 20.6 seconds.
Number: 817 Date: Thu Oct 17 16:12:33 MEST 2002 Report: Bruno Ondet (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: src/open_caesar/declarator.c Nature: A minor memory leak problem was fixed in the DECLARATOR program, which checks if an OPEN/CAESAR compiler is compliant wrt the OPEN/CAESAR API.
Number: 818 Date: Fri Oct 18 13:21:58 MEST 2002 Report: Frederic Tronel (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: com/svl, bin.*/svl_kernel, man/*/svl.* Nature: Two improvements have been brought to SVL: - The "-expand" command now comes with a "-indent" option that allows to set the number of blank characters used to indent lines. - When the same reduction occurs right before and right after a renaming, SVL eliminates the reduction occurring right before. This optimizes "leaf reduction" in the presence of renaming.
Number: 819 Date: Mon Oct 21 15:55:14 MEST 2002 Report: Robert de Simone (INRIA/TICK, Sophia-Antipolis, France) Author: Hubert Garavel (INRIA/VASY) Files: com/fc2open, bin.*/svl_kernel, man/*/fc2open.*, man/*/declarator.*, man/*/executor.*, man/*/evaluator.*, man/*/exhibitor.*, man/*/generator.*, man/*/ocis.*, man/*/predictor.*, man/*/projector.*, man/*/reductor.*, man/*/simulator.*, man/*/terminator.*, man/*/xsimulator.*, src/eucalyptus/default/fc2open, src/eucalyptus/default/fc2open2c, src/eucalyptus/fc2open.l, src/eucalyptus/eucalyptus.tcl, src/svl/standard Nature: The FC2OPEN tool developed at Sophia-Antipolis, which allowed to map onto the OPEN/CAESAR "caesar_graph" API networks of communicating LTSs expressed in the "parallel" FC2 format, is no longer maintained (its source code was lost during the team reorganization consecutive to the creation of the Esterel Technology company). The documentation of CADP, the EUCALYPTUS graphical interface and the SVL language have been updated so as to remove any reference to FC2OPEN.
Number: 820 Date: Mon Oct 21 17:08:37 MEST 2002 Report: Frederic Lang (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/exp2fc2 Nature: A bug was fixed, which caused EXP2FC2 to loop indefinitely in certain cases.
Number: 821 Date: Tue Oct 22 20:00:09 MEST 2002 Report: Dirk Keck (University of Stuttgart, Germany) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, bin.*/libBCG.a, bin.*/libBCG_IO.a Nature: When generating BCG graphs with very long labels (more than 5,000 characters), CAESAR and BCG would make segmentation fault errors due to string buffer overflow. This problem was addressed and solved: from now on, the "bcg_write" API accepts label strings of unlimited length. Moreover, code has been added in the BCG library in order to avoid "memory leak" problems detected by Purify (the table of gates and the table of labels are now properly disallocated when no longer used).
Number: 822 Date: Wed Oct 23 18:09:47 MEST 2002 Authors: Hubert Garavel, Bruno Ondet, and Radu Mateescu (INRIA/VASY) Files: com/seq.open, bin.*/libseq_open.a, man/*/seq.open.*, man/*/declarator.*, man/*/executor.*, man/*/evaluator.*, man/*/exhibitor.*, man/*/generator.*, man/*/ocis.*, man/*/predictor.*, man/*/projector.*, man/*/reductor.*, man/*/simulator.*, man/*/terminator.*, man/*/xsimulator.*, src/eucalyptus/eucalyptus.tcl Nature: A new tool named SEQ.OPEN was added to CADP. SEQ.OPEN is an OPEN/CAESAR-compliant compiler that maps a ".seq" file (coded in CADP's SEQUENCE format) onto OPEN/CAESAR's "caesar_graph" API, thus allowing the application of all OPEN/CAESAR tools (e.g., OCIS, EVALUATOR...) to this ".seq" file. It is worth noticing that the functionality provided by SEQ.OPEN could also be obtained by first converting the ".seq" file into a ".bcg" file (using BCG_IO) and then applying the OPEN/CAESAR tool on the resulting ".bcg" file (by means of BCG_OPEN). However, SEQ.OPEN is more efficient (e.g., up to 50 times faster on large ".seq" files) as it avoids the preliminary translation into ".bcg" and does not store the entire ".seq" file in main memory. A first prototype of SEQ.OPEN was developed in December 2000, in the framework of the FormalFame collaboration between BULL and VASY. This tool served to model-check mu-calculus formulas on traces generated by BULL multiprocessor systems. In 2001 and 2002, SEQ.OPEN was entirely rewritten in order to support the complete SEQUENCE format (including comments and multiple sequences separated by the "[]" operator) and to implement the entire "caesar_graph" API. SEQ.OPEN was also made two times faster by removing an internal call to the C compiler, by representing labels using file offsets, and by adding a hash-based cache to store labels and transitions. The CADP manual pages have been updated to reflect the existence of SEQ.OPEN, and the EUCALYPTUS graphical user- interface was modified to handle ".seq" files using SEQ.OPEN (for on-the-fly processing) rather than ".bcg" files.
Number: 823 Date: Thu Oct 24 20:32:32 MEST 2002 Author: Hubert Garavel (INRIA/VASY) Files: src/eucalyptus/eucalyptus.tcl Nature: The EUCALYPTUS graphical user interface was improved: - The mechanism for checking the compatibility of ".xeucarc" startup files contained a problem that was fixed. - The "Save preferences" feature could generate improper version numbers; this was fixed. - All menu entries have been uniformized (single initial capital letter, and "..." notion everywhere needed).
Number: 824 Date: Mon Oct 28 16:44:11 MET 2002 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel Nature: On Linux, parsing of renaming rules in SVL scripts could have side effects on other labels of the SVL script. This problem was solved.
Number: 825 Date: Mon Nov 4 15:38:46 MET 2002 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard Nature: The SVL compiler was modified so as to use the new SEQ.OPEN tool (see item #822 above). Whenever an OPEN/CAESAR applica- tion program is launched on a ".seq" file, SVL will no longer invoke BCG_IO/BCG_OPEN, but will use SEQ.OPEN instead. A special variable $SEQ_OPEN_OPTIONS was added to SVL in order to contain particular options for SEQ.OPEN.
Number: 826 Date: Tue Nov 12 12:32:29 MET 2002 Author: Hubert Garavel (INRIA/VASY) Files: com/caesar.aldebaran, man/*/caesar.aldebaran.* Nature: The "caesar.aldebaran" shell-script was removed from CADP, since this shell-script was made useless and obsolete by the introduction of SVL in January 2001 (see item #729 above).
Number: 827 Date: Wed Nov 13 16:45:24 MET 2002 Report: Bruno Ondet (INRIA/VASY) Authors: Hubert Garavel and Nicolas Descoubes (INRIA/VASY) Files: src/com/cadp_cc, src/com/windows/* Nature: The Windows version of CADP has been updated to cope with the evolution of the Cygwin software, which, in October 2002, moved from Gcc 2.95.3-10 to Gcc 3.2. Because of this compiler change, the BCG tools did not work with the latest version of Cygwin, and would fail with an error message of the form: seek must be permitted for a bcg_file in BCG_OPEN_BINARY This problem was addressed by enhancing the "cadp_cc" shell script and the contents of the "src/com/windows" directory: a sub-directory named "bin.win32" was added; the existing file gcc-crtdll-specs was renamed into gcc-crtdll-specs-2.95.2-6; and a new file named "gcc-crtdll-specs-3.2" was added.
Number: 828 Date: Wed Nov 20 11:31:03 MET 2002 Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/bcg_min Nature: During October-November 2002, many internal modifications have been brought to the BCG_MIN tool, in order to reduce the amount of memory required for graph minimization. The results can be summarized as follows: - Let m and n be the respective numbers of transitions and states in the graph to be minimized, and - Let b be the number of "blocks" in the minimized graph (note that b <= n) - For "normal" LTSs and strong bisimulation: the number of bytes needed by BCG_MIN was reduced from 16m + 24n + 32b down to 16m + 16n + 24b - For "normal" LTSs and branching bisimulation: the number of bytes needed by BCG_MIN was reduced from 16m + 24n + 32b down to max (16m + 16n + 24b, 16m + 20n) - For probabilistic/stochastic LTSs and strong bisimulation: the number of bytes needed by BCG_MIN was reduced from 16m + 32n + 40b down to 16m + 24n + 28b - For probabilistic/stochastic LTSs and branching bisimulation: the number of bytes needed by BCG_MIN was reduced from 16m + 32n + 40b down to max (16m + 24n + 28b, 16m + 28n) Additional changes have been made to increase speed, which make BCG_MIN about 15% faster on some examples.
Number: 829 Date: Thu Nov 21 16:21:40 MET 2002 Authors: Hubert Garavel and Damien Bergamini (INRIA/VASY) Files: bin.*/bcg_io, bin.*/libBCG_IO.a, man/*/bcg_io.*, src/eucalyptus/eucalyptus.tcl Nature: A new option ``-etmcc'' has been added to BCG_IO in order to produce the ``.tra'' needed by the Erlangen Twente Markov Chain Checker (ETMCC). This enables the model-checking of performance properties expressed using the Continuous Stochastic Logic (CSL) against a labelled continuous-time Markov chain contained in a BCG graph. In the EUCALYPTUS graphical user-interface, this functionality is now accessible using the "Convert" item in contextual menus.
Number: 830 Date: Fri Dec 13 19:14:53 MET 2002 Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: doc/*/Garavel-Lang-02.* Nature: A new publication describing a semantical model (NTIF) to be used in future versions of CADP was added.
Number: 831 Date: Tue Jan 28 19:47:56 MET 2003 Report: Ken Turner (Univ. of Stirling, Scotland, UK) Author: Hubert Garavel (INRIA/VASY) Files: src/com/cadp_which Nature: A bug (missing '$' before shell variable WHICH) has been fixed.
Number: 832 Date: Tue Jan 28 20:39:46 MET 2003 Report: Ken Turner (Univ. of Stirling, Scotland, UK) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/*, src/com/*, bin.*/bcg_*, bin/libBCG*.a, bin/libbcg*.a Nature: Changes have been undertaken in order to allow the presence of white spaces in file names (mostly needed for Windows, as in "/Program Files", "/Documents and Settings", etc.). This is a heavy task, since almost every CADP binary and shell scripts have to be patched. A first set of changes has been applied, but several tools remain to be patched.
Number: 833 Date: Thu Jan 30 18:42:49 MET 2003 Authors Holger Hermanns (Univ. Sarrebruck, Germany), Christophe Joubert (INRIA/VASY), and Radu Mateescu (INRIA/VASY) Files: doc/*/Hermanns-Joubert-03.*, doc/*/Mateescu-03-a.* Nature: Two new papers have been added: - The first one presents the forthcoming tools BCG_STEADY, BCG_TRANSIENT, and DETERMINATOR for performance evaluation. - The second one presents the CAESAR_SOLVE library for efficient resolution of boolean equation systems.
Number: 834 Date: Fri Feb 14 18:20:11 MET 2003 Report: Volker Braun (Univ. Dortmund, Germany), Lars-Ake Fredlung (SICS, Sweden), Jan Friso Groote (Tech. Univ. Eindhoven, The Netherlands), and Ken Turner (Univ. of Stirling, Scotland, UK) Author: Hubert Garavel (INRIA/VASY) Files: com/rfl, INSTALLATION_3 Nature: The RFL command was enhanced so as to support other remote access protocols than rsh/rcp. From now on, ssh/scp and Kerberos' krsh/kcp are also supported. Also, the explanations given in INSTALLATION_3 have been improved.
Number: 835 Date: Tue Mar 11 11:04:06 MET 2003 Author: Hubert Garavel (INRIA/VASY) Files: incl/caesar_hash.h, man/*/caesar_hash.*, doc/*/Garavel-92-a.* Nature: Hash functions CAESAR_1_HASH(), CAESAR_2_HASH(), and CAESAR_3_HASH() were improperly defined. The correct definition is CAESAR_i_HASH (CAESAR_S, CAESAR_HASH_SIZE_STATE(), CAESAR_MODULUS) instead of: CAESAR_i_HASH (CAESAR_S, CAESAR_SIZE_STATE(), CAESAR_MODULUS)
Number: 836 Date: Wed Mar 12 14:20:54 MET 2003 Authors: Frederic Lang and Hubert Garavel (INRIA/VASY) Files: demos/* Nature: Demos 03, 04, 07, 08, 16, and 24 have been equipped with SVL scripts. The corresponding =READ_ME.txt files have been simplified and most of their contents was transferred to the newly created ".svl" files. Also, for most demo examples, the existing ".svl" file was renamed into "demo.svl".
Number: 837 Date: Wed Mar 12 16:12:51 MET 2003 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar.adt, incl/X_NATURAL.h Nature: The C code generated by CAESAR.ADT was made more portable: - on Unix, it now uses the native raise() function, instead of defining raise() as an alias for kill (getpid()). The same modification was made in file incl/X_NATURAL.h. - <stdlib.h> is now included to get the declaration of exit().
Number: 838 Date: Wed Mar 12 18:32:11 MET 2003 Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: bin.*/caesar Nature: The state vector generated by CAESAR is now sorted: fields are permuted using a heuristic that tends to minimize unused "padding" bits, which are introduced by the C compiler in order to align fields on byte/word boundaries properly. This permutation is similar to the one performed by CAESAR.ADT on fields of generated structure/union C types. It is transparent to the end-user. On randomly generated state vectors, the average reduction in state vector size is 20%. However, on the database of real LOTOS examples used for regression testing of CAESAR, the gain appears to be more limited (1.3%).
Number: 839 Date: Thu Mar 13 10:20:51 MET 2003 Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard, man/*/svl.*, demos/demo_01/*.svl, demos/demo_02/*.svl, demos/demo_10/*.svl, demos/demo_11/*.svl, demos/demo_24/*.svl Nature: The choice of the default tool called by SVL to minimize an "explicit", "normal" LTS has been simplified: - If the reduction relation is strong or branching equivalence, then SVL invokes BCG_MIN; - Otherwise, if the reduction relation is observational, safety, or tau*.a, then SVL invokes ALDEBARAN. The SVL script files for demos 01, 02, 10, 11, and 24 have been simplified accordingly.
Number: 840 Date: Mon Mar 17 13:17:56 MET 2003 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: src/com/cadp_edit Nature: The "cadp_edit" shell-script was modified to avoid a Windows- specific problem (files whose name starts with a "/" can not be opened using "wordpad.exe" or "write.exe"). Because of this problem, the "Help" button of INSTALLATOR would not open the help file (on Windows) and the "Edit .rhosts" button of INSTALLATOR would open an empty file (still on Windows).
Number: 841 Date: Mon Mar 17 15:53:32 MET 2003 Authors: Damien Bergamini, Hubert Garavel, and Bruno Ondet (INRIA/VASY) Files: bin.*/libcaesar.a, incl/caesar_hash.h, man/*/caesar_hash.*, doc/*/Garavel-92-a.* Nature: New hash functions named CAESAR_4_HASH(), CAESAR_5_HASH(), and CAESAR_6_HASH() --- together with their corresponding functions CAESAR_STATE_4_HASH(), CAESAR_STATE_5_HASH(), and CAESAR_STATE_6_HASH() --- have been added to OPEN/CAESAR's "caesar_hash" library.
Number: 842 Date: Tue Mar 18 13:14:17 MET 2003 Report: Frederic Tronel (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard, bin.*/svl_kernel Nature: When run with the "-debug" option, an SVL script performing abstractions in a "for" loop could re-use a ".sync" file that was automatically generated in a previous iteration, instead of re-generating it. This was incorrect if the interface file changed between successive iterations of the loop. This problem was solved.
Number: 843 Date: Wed Apr 2 16:54:06 MEST 2003 Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, incl/caesar_kernel.h Nature: The "caesar_kernel.h" file containing the EXEC/CAESAR API and the C code generated by CAESAR with option "-exec" have been modified: - From now on, base types (such as CAESAR_TYPE_BOOLEAN, CAESAR_TYPE_NATURAL, ...) are defined in "caesar_exec.h" rather than in the C code generated by CAESAR with option "-exec". This increases the compatibility between EXEC/ and OPEN/CAESAR. - The "caesar_kernel.h" API now provides a function (actually, a macro-definition) CAESAR_KERNEL_CURRENT_TRANSITION() that gives the number of the last (visible or tau, but not epsilon) transition fired in the Petri net generated by CAESAR. This new functionality can be useful for measuring the coverage of the Petri net transitions during execution. It is only available when the C code generated by CAESAR with option "-exec" is compiled with C compiler option "-DCAESAR_KERNEL_TRANSITION_INFORMATION" (or if a directive #define CAESAR_KERNEL_TRANSITION_INFORMATION occurs before including "caesar_kernel.h" and the C code generated by CAESAR).
Number: 844 Date: Fri Apr 4 13:14:01 MEST 2003 Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar Nature: The C code generated during the simulation phase of CAESAR was improved in two ways: - Each sequence of successive assignments of the form P->CAESAR_PASS[I] |= A1; ... P->CAESAR_PASS[I] |= An; was replaced with one unique assignment of the form: P->CAESAR_PASS[I] |= (A1 | ... | An); This reduction in the size of the generated C code applies to all options ("-aldebaran", "-bcg", "-exec", or "-open") - For option "-exec", another optimization was added, which avoids recomputing the table of positions and the list of firable transitions when function CAESAR_KERNEL_NEXT() is called twice (or more) on the same current state (for details, see occurrences of variable CAESAR_SAME_STATE in the generated C code). On the "ILU-medium" and "ILU-large" benchmarks given to us by BULL, this optimization improves by 17% the speed of the C code generated by CAESAR.
Number: 845 Date: Tue Apr 15 15:22:56 MEST 2003 Report: Yehong Xing (BULL) Authors: David Champelovier, Frederic Lang, and Hubert Garavel (INRIA/ VASY) Files: bin.*/caesar, bin.*/caesar.adt, bin.*/caesar.indent Nature: Some error messages emitted by CAESAR and CAESAR.ADT were incorrect: when a syntactic error occurred in a LOTOS file included using the "library ... endlib" directive, the error message indicated an incorrect filename, e.g., [PRR:47] Warning : ``)'' is deleted instead of [ERR:47] Warning : ``)'' is deleted if the syntactic error was at line 47 of file ERR.lib. This problem only occurred after the SYNTAX compiler generator attempted to repair the syntactic error using its global recovery scheme. This was due to a memory allocation error in the SYNTAX library, which was fixed.
Number: 846 Date: Wed Apr 16 10:12:24 MEST 2003 Report: Ghassan Chehaibar (BULL) and Radu Mateescu (INRIA/VASY) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.adt Nature: For some syntactically incorrect LOTOS programs, CAESAR and CAESAR.ADT could make a core dump. This problem was due to the syntax recovery feature of SYNTAX, which can insert "fictive" tokens where actual tokens are missing. The problem was solved.
Number: 847 Date: Thu Apr 17 14:45:47 MEST 2003 Report: Bruno Vivien (INRIA/VASY) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: bin.*/caesar.adt Nature: For some semantically incorrect LOTOS programs containing a value expression enclosed between parentheses, e.g., eqns ofsort Bool true = ( 0 ); CAESAR.ADT could make a core dump (while CAESAR would report the error correctly). This problem was solved.
Number: 848 Date: Fri May 9 15:46:46 MEST 2003 Report: Yehong Xing (BULL) Author: Hubert Garavel (INRIA/VASY) Files: lib/NATURAL.lib, lib/X_NATURAL.lib, demos/demo_12/maa.lotos, demos/demo_16/BRP.lib Nature: The Natural data type library included in CADP was enhanced. Previously, this library was a replacement to the standard NaturalNumber library provided by the LOTOS definition. The compatibility between the Natural and NaturalNumber libraries was improved in the sense that Natural is now an extension (or enrichment) of NaturalNumber: by importing the enhanced version of Natural, one also imports the standard NaturalNumber and BasicNaturalNumber libraries in a totally standard manner. A similar change was brought to the X_Natural library, which establishes a missing symmetry between Natural and X_Natural, the latter being nothing but the external implementation of the former. This is done by splitting the X_Natural library into three types (BasicNaturalNumber, NaturalNumber, and Natural). However, the latter change might create problems in existing LOTOS programs. To address this issue, you should first locate all files with either ".lotos" or ".lib" extension that import the X_Natural library. This can be done by typing the following shell command: find / -name "*.lotos" -o -name "*.lib" -exec \ grep -i '\<X_NATURAL\>' \{\} /dev/null \; | tee _xnatural Then, for each file F listed in "_xnatural", you should try to compile F using CAESAR.ADT (if F is a ".lib" file, then you should try to compile a ".lotos" file that imports F). If compilation succeeds, no change must be done. If compilation fails, then you should replace, in file F (and in all LOTOS files dependent on F) lines of the form type T is ... NaturalNumber ... by type T is ... Natural ... if type T makes use of the data type operations defined in type Natural and not in type NaturalNumber (these operations are the following: 1, 2, 3, ..., 9, -, div, mod, ==, <>, <, <=, >, >=, gcm, and scm). Given that LOTOS is not case- sensitive, the change may consist in replacing type T is ... NATURALNUMBER ... by type T is ... NATURAL ... The demos 12 and 16 of CADP have been updated accordingly.
Number: 849 Date: Thu May 15 17:28:14 MEST 2003 Report: Nicolas Descoubes (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: src/installator/bin.win32/blat.exe Nature: For recent versions of Cygwin, INSTALLATOR would fail to send the license file by e-mail, because the "x" (eXecute) bit was not set on the "blat.exe" file. This was fixed.
Number: 850 Date: Wed May 21 20:05:14 MEST 2003 Report: Marc Boyer (ENSEEIHT, Toulouse, France), Luka Hejtmanek (Masaryk University, Brno, Czech Republic), Jean-Christophe Pince (M3 Systems, Lavernose, France), and Maciej Szreter (IPIPAN, Warsaw, Poland) Authors: Hubert Garavel and Nicolas Descoubes (INRIA/VASY) Files: bin.iX86/* Nature: On recent versions of Linux (such as RedHat 9.0 and Mandrake 9.1) the CADP binary tools would not execute properly (they would abort with a segmentation fault signal). This problem was solved by recompiling all CADP binaries.
Number: 851 Date: Mon May 26 13:13:52 MEST 2003 Author: Radu Mateescu (INRIA/VASY) Files: doc/*/Mateescu-03-c.*, doc/=README.txt Nature: A new publication about the CAESAR_SOLVE library was added to the "doc" directory.
Number: 852 Date: Mon May 26 16:32:42 MEST 2003 Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: demos/demo_12/maa.lotos, demos/demo_12/maa.f Nature: The REVERSE function of the MAA protocol is now implemented directly in C (in the "maa.f" file). Previously, it was specified in LOTOS. This simple change allows significant memory savings (see the "=READ_ME.txt" file).
Number: 853 Date: Mon Jun 2 18:18:42 MEST 2003 Author: Nicolas Descoubes (INRIA/VASY) Files: src/monitor/main.tcl Nature: A minor problem was fixed in the MONITOR tool: during the generation of a large BCG graph, if the MONITOR window was hidden by another window and then brought to the front ground, the MONITOR window could remain frozen (i.e., grey) during a few seconds until the window was refreshed. This problem is now solved.
Number: 854 Date: Thu Jun 5 14:48:55 MEST 2003 Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar Nature: Further changes have been brought to CAESAR so as to generate faster C code for firing transition: - The CAESAR_PASS data structure becomes an array of 32-bits words instead of an array of bytes. On the ILU-medium example of BULL, this makes EXEC/CAESAR 5.8% faster. - When computing successor states, we delay as much as possible the backup of the current state and the computation of the successor marking, until it is certain that the transition will be fireable. This avoids useless computations in the case the transition would not be fireable, either because a "when"-guard evaluates to false, or because the environment refuses the rendezvous (the latter case only applies to EXEC/CAESAR). On the ILU-medium example of BULL, this improves speed by 24% on Linux and 36% on Solaris. - By considering, in EXEC/CAESAR mode, whether each variable used as input in a rendezvous is a bit field or not, it becomes possible to delay even more computations until it is certain that the transition will be fireable. All these changes (combined to those mentioned in item #844 above) lead to significant speed improvement (42% for the ILU-medium example on Solaris).
Number: 855 Date: Mon Jun 16 18:59:42 MEST 2003 Report: Solofo Ramangalahy (BULL) Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, incl/caesar_kernel.h Nature: The EXEC/CAESAR API was enhanced with new primitives that provide a finer access to the underlying Petri net model (see the "caesar_kernel.h" file). A first group of primitives provides statistical information about the number of Petri net transitions and the repartition of these transitions as epsilon, visible, and tau transitions: CAESAR_KERNEL_NB_TRANSITIONS() CAESAR_KERNEL_NO_TRANSITION() CAESAR_KERNEL_EPSILON_TRANSITION_MIN_NUMBER() CAESAR_KERNEL_EPSILON_TRANSITION_MAX_NUMBER() CAESAR_KERNEL_VISIBLE_TRANSITION_MIN_NUMBER() CAESAR_KERNEL_VISIBLE_TRANSITION_MAX_NUMBER() CAESAR_KERNEL_TAU_TRANSITION_MIN_NUMBER() CAESAR_KERNEL_TAU_TRANSITION_MAX_NUMBER() A second group of primitives gives transition properties, namely: CAESAR_KERNEL_CURRENT_TRANSITION() (see item #843 above) CAESAR_KERNEL_TRANSITION_GATE() which return the number and gate, respectively, of the last transition fired. In particular, the former function allows, in association with primitives of the first group above, to measure the coverage by counting the number of visible transitions fired. A third group of primitives allows to introduce randomness in the firing of tau transitions. The user can now provide a CAESAR_KERNEL_TAU() function (presumably based on random number generation) that is called every time a tau transition T is fireable: T will be fired iff CAESAR_KERNEL_TAU() returns true. By default, function CAESAR_KERNEL_TAU() always returns true, which expresses the default behaviour of EXEC/CAESAR, in which the first fireable tau transition is always selected.
Number: 856 Date: Tue Jun 17 15:23:56 MEST 2003 Author: Hubert Garavel (INRIA/VASY) Files: games Nature: Following a remark from one user, the "games" directory was removed from the CADP distribution.
Number: 857 Date: Thu Jun 19 16:55:48 MEST 2003 Author: Hubert Garavel (INRIA/VASY) Files: bin.*/caesar Nature: The C code generated by CAESAR (using "-exec" option) for function CAESAR_KERNEL_INIT() was improved to discover automatically (at run-time) if the user has modified the ".h" or ".t" file AFTER generating the ".c" file. This avoids the two following situations in which the ".c" file is no longer up to date after the modification of the ".h" or ".t" file: - Some sort S originally not defined as a bit field is now a bit field; in such case, the ".c" file is incorrect, as it takes the address ("&") of a bit field, and the user will receive an error message while compiling the ".c" file. - Some sort S originally defined as a bit field is no longer a bit field; in such case, the ".c" file is no longer optimal and the user will receive a warning when the C code executes; this warning indicates that the ".c" file must be regenerated.
Number: 858 Date: Fri Jun 20 17:42:16 MEST 2003 Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.adt Nature: Two limitations of CAESAR and CAESAR.ADT have been lifted: - The number of ".lib" files that can be included in a LOTOS program was increased from 128 to 255. - The number of "significant" characters that are allowed in C identifiers was increased from 32 to 48 (one should keep in mind, however, that the ANSI C standard only permits 6 significant characters for external identifiers, because of some obsolete link editors).
Number: 859 Date: Fri Jun 20 19:29:14 MEST 2003 Report: Jack Abily (BULL) Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar.adt Nature: The ".h" file produced by CAESAR.ADT has been enhanced so as to allow this file to be included in several C files (i.e., for separate compilation purpose). This is done by using a new macro CAESAR_ADT_INTERFACE that, if defined, will skip variable definitions, function definitions, as well as the inclusion of the ".f" file (since the ".f" file is supposed to contain user-defined functions, which are not guaranteed to be properly bracketed by CAESAR_ADT_INTERFACE). To use the ".h" file as a simple interface, one should either compile with the flag -DCAESAR_ADT_INTERFACE, or define the CAESAR_ADT_INTERFACE macro before including the ".h" file: #define CAESAR_ADT_INTERFACE #include "xxx.h"
Number: 860 Date: Mon Jun 23 19:23:12 MEST 2003 Report: Knut Conrad (Humboldt University, Berlin, Germany) Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar Nature: A bug was fixed in optimisation E2. This optimization was too "aggressive" and could in some rare cases (0.13% of our entire non-regression data base) remove some places that were needed to preserve the flow of data, leading to an incorrect LTS (actually, an LTS smaller than needed, in which some states were missing and some transitions were cut). The bug was fixed by strengthening the preconditions for application of optimization E2.
Number: 861 Date: Wed Jun 25 18:43:36 MEST 2003 Report: Solofo Ramangalahy (BULL) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/caesar Nature: The C code generated by CAESAR no longer declares useless variables (those named CAESAR_REGISTER_xxx). On the one hand, this avoids compiler warnings (e.g. when compiling with "gcc -Wall"). On the other hand, this reduces the stack size needed for firing transitions.
Number: 862 Date: Thu Jul 10 15:09:48 MEST 2003 Report: Nicolas Descoubes (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: man/*/caesar_*.* Nature: In the OPEN/CAESAR manuals, whatever their format (".html", ".l", ".ps", or ".pdf"), there was an error in the text notes regarding the various functions named "CAESAR_CREATE_*". Instead of: CAESAR_CREATE_TABLE_1 (CAESAR_T, ...) the correct text should have been: CAESAR_CREATE_TABLE_1 (&CAESAR_T, ...) This error (caused by a mistake in the translator used by VASY to generate manual pages automatically) has been fixed.
Number: 863 Date: Mon Jul 21 17:48:21 MEST 2003 Report: Gregory Lestiennes (Universite Paris Sud, Orsay, France) and Ken Turner (Univ. of Stirling, Scotland, UK) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/tst, INSTALLATION_4, src/com/install_uncompress, src/com/cadp_postscript Nature: On recent Linux and Cygwin distributions, the "compress" and "uncompress" commands are no longer available by default. This caused a problem for several CADP tools that relied on the presence of "uncompress". For instance, INSTALLATOR would stop with the following error messages: Extracting files from archive CADP_iX86_...tar.Z Error while decompressing .../install_uncompress: ...: uncompress: command not found These tools and the installation directives have been updated so as to use "gzip -d" instead of "uncompress" on iX86 and win32 architectures.
Number: 864 Date: Fri Sep 12 18:49:17 MEST 2003 Authors: Hubert Garavel, Frederic Lang, Gordon Pace, and Radu Mateescu (INRIA/VASY) Files: doc/*/Garavel-03.*, doc/*/Pace-Lang-Mateescu-03.* Nature: Two new publications have been added in the "doc" directory.
Number: 865 Date: Thu Sep 18 16:21:26 MEST 2003 Report: Nicolas Descoubes (INRIA/VASY) Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/libbcg_info.a Nature: The BCG_INFO tool was modified in order to improve its performance when handling very large graphs: - The algorithm used for option "-nondeterministic" was improved. From now on, this algorithm opens BCG files in mode 0 instead of mode 1 (see "man bcg_read"). - When BCG_INFO is called without option, it no longer displays unreachable states (since this would require to open the BCG file in mode 1). As a consequence, BCG_INFO is now much faster. For instance, on the cwi_33949_165318 example of the VLTS benchmark suite (33 million states and 165 million transitions), BCG_INFO now answers in 5 minutes, compared to several hours (or even segmentation faults) with the previous version.
Number: 866 Date: Thu Sep 18 17:46:13 MEST 2003 Report: Ken Turner (University of Stirling, Scotland, UK) Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar.adt Nature: LOTOS allows to define operation identifiers containing special characters such as "+", "-", "/", "--", etc. The C code generated by CAESAR.ADT for LOTOS identifiers containing the characters "\" and/or "%" was incorrect, as these characters have a special meaning in C (they provide an escape mechanism in C strings and printf() format strings). This bug was fixed.
Number: 867 Date: Tue Sep 23 18:57:40 MEST 2003 Authors: Hubert Garavel and Damien Bergamini (INRIA/VASY) Files: com/bcg_info, bin.*/libbcg_info.a, man/*/bcg_info.* Nature: A new option "-order" was added to BCG_INFO. The purpose of this option is described in the "bcg_info" manual page.
Number: 868 Date: Wed Oct 1 17:13:49 MEST 2003 Report: Tomas Barros (INRIA/OASIS, Sophia-Antipolis, France) Author: Radu Mateescu (INRIA/VASY) Files: bin.*/evaluator.a Nature: A bug was fixed in the EVALUATOR model-checker, which generated an incorrect error message when the tool was invoked on a BCG graph whose initial state number was different from zero.
Number: 869 Date: Fri Oct 3 13:04:09 MEST 2003 Authors Frederic Tronel, Frederic Lang, Hubert Garavel and David Champelovier (INRIA/VASY) Files: bin.*/bcg_graph, man/*/bcg_graph.* Nature: A new tool, named BCG_GRAPH, was added to the CADP package. This tool generates several useful kinds of automata such as bugs, FIFO queus, chaos automata.
Number: 870 Date: Mon Oct 6 12:53:33 MEST 2003 Report: Hubert Garavel (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard, man/*/svl.* Nature: The syntax of SVL has been extended in two ways: - The "reduction" operator of SVL and the meta-operators related to it have been enhanced with new attributes for dealing with the stochastic and probabilistic bisimulations implemented in BCG_MIN; one can now use the following SVL clauses: strong stochastic reduction ... branching stochastic reduction ... strong probabilistic reduction ... branching probabilistic reduction ... - New SVL behavioural operators ("bag", "chaos", "fifo", ...) have been introduced to take advantage of the facilities provided by the new BCG_GRAPH tool.
Number: 871 Date: Thu Oct 16 16:14:07 MES 2003 Report: Radu Mateescu (INRIA/VASY) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: bin.*/libbcg_open.a Nature: The implementation provided by BCG_OPEN for the two functions CAESAR_PRINT_LABEL() and CAESAR_STRING_LABEL() defined in the OPEN/CAESAR API has been made faster. For instance, on the alternating bit protocol of demo_02 with 50 messages, the following command: bcg_open bitalt_protocol.bcg generator result.bcg is now 4 times faster.
Number: 872 Date: Thu Oct 16 17:25:46 MEST 2003 Report: Nicolas Descoubes (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/libBCG.a, man/*/bcg.* Nature: The default values for the compression parameters of the BCG format (i.e., the default values for the three BCG general options "register", "-short", and "-medium", which are grouped altogether by the "-size" option) have been adapted. The previous default values (2, 2, 4) defined in 1993 were no longer optimal for the larger BCG models that can be generated in 2003. The new default values have been set to (4, 1, 3) after exhaustive experiments done on the VLTS benchmark suite. In practice, for the various BCG graphs that can be generated from the CADP demos, one observes an average reduction of 11% in the size of BCG files. For large graphs (more than 10^5 transitions), the average reduction is 11.9%. For small graphs (less than 10^5 reduction), the file sizes slightly increases (by 3,9%), but this is negligible as the files are small.
Number: 873 Date: Tue Oct 21 14:54:03 MEST 2003 Report: Hubert Garavel (INRIA/VASY) Author: Nicolas Descoubes (INRIA/VASY) Files: bin.*/libbcg_draw.a Nature: The PostScript files generated by BCG_DRAW have been enhanced with a directive: %%Page: 1 1 so as to avoid the following warning from the Gsview software running on Windows: DSC error %%Pages: doesn't match the number of %%Page
Number: 874 Date: Thu Oct 23 18:05:41 MEST 2003 Report: Marius Minea (Institute e-Austria, Timisoara, Romania) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/tst Nature: The "tst" command (self-testing command of CADP) was enhanced in several ways: - "tst" now displays the version number of the "gcc" compiler, and the version number of the "glibc" library (on Linux). - "tst" now detects the case where $CADP is not set to an absolute pathname (i.e., does not start with a "/"). - "tst" now detects the case where $CADP is set to a Windows pathname (e.g., "C:\..."). - "tst" now detects the case where $CADP is set to a pathname ending with a trailing "/", which causes "tst" to emit incorrect warning messages of the form: *** The tool ``...'' is not searched in ``$CADP/bin.iX86'' but in ``/.../bin.iX86'' instead You might have two versions of CADP installed ==> Reorder your ``$PATH'' variable to have ... and remove all obsolete versions of CADP, if any as the "tst" script is unable to figure out that "//" and "/" are in fact equivalent.
Number: 875 Date: Fri Oct 24 12:55:34 MEST 2003 Report: Alban Catry, Radu Mateescu and Nicolas Descoubes (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: doc/*/Garavel-92-a.*, man/*/caesar_*.* Nature: The OPEN/CAESAR manual pages (especially the "caesar_graph", "caesar_edge", and "caesar_table_1" pages) have been improved. In addition to English language corrections, several notes have been added. In particular, it is now said explicitly that functions CAESAR_COPY_STATE(), CAESAR_COPY_LABEL(), and CAESAR_START_STATE() do not allocate memory for their second parameter.
Number: 876 Date: Mon Oct 27 17:08:09 MET 2003 Authors: Hubert Garavel and Damien Bergamini (INRIA/VASY) Files: bin.*/caesar Nature: The CAESAR compiler was modified so as to minimize the memory size used by transition labels under their binary form (this size is the result returned by the CAESAR_SIZE_LABEL() function of the OPEN/CAESAR API). Three technical approaches have been implemented: - CAESAR now uses bitfield information when generating the definition of the binary label type. - CAESAR now permutes the fields of the binary label type (i.e., the fields corresponding to LOTOS experiment offers) in the same way as it permutes the state vector fields. - The field containing the Petri net transition number inside the binary label type was made more compact by introducing a dedicated number type CAESAR_TYPE_PACKED_TRANSITION_NUMBER. In practice, on the entire non-regression testing base of CADP, these changes reduced the size of binary labels by 45%.
Number: 877 Date: Wed Oct 29 10:59:58 MET 2003 Authors: Hubert Garavel and Damien Bergamini (INRIA/VASY) Files: bin.*/caesar Nature: The implementation generated by CAESAR (with option "-open") for the CAESAR_HASH_LABEL_SIZE() function of the OPEN/CAESAR API was made more accurate. In many cases, this function now returns a greater value than previously. This, combined with the average label size reduction (see item #876 above), improves the quality of hashing on binary labels by increasing the relative percentage of binary label representation on which user-defined hashing functions can operate. Reminder: before any LTS processing, one should not forget to invoke the CAESAR_INIT_GRAPH() function of the OPEN/CAESAR API. The former versions of CAESAR used to generate an empty definition for CAESAR_INIT_GRAPH(), so that omitting to invoke this function was harmless when using "caesar.open" (but not "bcg.open", "seq.open", etc.). At present, the definition generated by CAESAR for CAESAR_INIT_GRAPH() is no longer empty and cannot be ommitted, otherwise CAESAR_HASH_LABEL_SIZE() will return an incorrect value.
Number: 878 Date: Mon Nov 17 15:17:12 MET 2003 Report: Katsumi Wasaki (Shinshu University, Nagano, Japan), and Carlos Eduardo Araujo Vieira (University of Ceara, Brazil) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: src/com/cadp_cc, src/com/windows/gcc-crtdll-specs-3.3 Nature: The win32 version of CADP was adapted to support the Gcc 3.3 compiler included in the latest versions of Cygwin. This suppresses various error messages of the form: gcc: installation problem, cannot exec `cpp0': No such file or directory <command line>:20:13: warning: "system" re-asserted <command line>:22:1: warning: "__STDC_HOSTED__" redefined <command line>:1:1: warning: "__STDC__" redefined <command line>:23:9: warning: "cpu" re-asserted <command line>:24:13: warning: "machine" re-asserted /lib/mingw/crt1.o(...):crt1.c: undefined reference to `__p__fmode' etc.
Number: 879 Date: Mon Nov 17 15:57:10 MET 2003 Report: Ken Turner (University of Stirling, Scotland, UK) Author: Hubert Garavel (INRIA/VASY) Files: com/tst, src/com/cadp_which, cadp_cygwin.com Nature: The "tst" command was enhanced to compare, on win32, both files "/bin/sh.exe" and "/bin/bash.exe", and if different, to warn the user that the shell-script "cadp_cygwin.com" should be executed. The "cadp_which" command was modified on win32 so as to function properly even when the "cadp_cygwin.com" shell- script has not been applied properly. The "cadp_cygwin.com" shell-script was modified in several ways: - Obsolete features related to old features of Cygwin have been removed. - Version 1.5.5 of Cygwin is now supported. - It is now possible to execute "cadp_cygwin.com" several times, e.g., after each upgrade of Cygwin.
Number: 880 Date: Tue Nov 18 10:20:32 MET 2003 Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar Nature: In the C code generated by CAESAR with "-open" option, the array CAESAR_UNIQUE_GATE[] was removed and replaced with a new array named CAESAR_UNIQUE_GATE_AND_PROFILE[]. Then, the C code generated for functions CAESAR_COMPARE_LABEL() and CAESAR_HASH_LABEL() has been revised, with two main advantages: - The CAESAR_COMPARE_LABEL() function becomes faster. - The CAESAR_HASH_LABEL() function becomes faster and gives a better hash dispersion: the previous hash function only considered the gate and the profile of a label, thus giving the same hash value for labels with the same gate and profile, but different experiment offers; the new hash function reduces the risk of collisions by hashing also on all experiment offers of canonical type (i.e., of any type but a pointer type). In the alternating bit protocol of demo_02 with 100 messages, the number of hash collisions for all reachable labels was reduced from 101 to 0. In the bounded retransmission protocol of demo_16 with 10 messages, the number of hash collisions for all reachable labels was reduced from 48 to 10 (only conflicts for non- canonical sorts remain). On the entire list of full-LOTOS programs used for regression testing of CAESAR, the average number of hash collisions for labels was divided by 3.9 on Solaris and divided by 2.5 on Linux.
Number: 881 Date: Thu Nov 20 09:35:16 MET 2003 Report: Katsumi Wasaki (Shinshu University, Nagano, Japan) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/tst Nature: The "tst" command was improved in two ways: - On Windows, it now detects and report the case where Cygwin is not installed in C:\ but in a sub-directory, such as C:\cygwin. - On Linux, it now detects and reports obsolete versions of the Glibc library (i.e., versions strictly older than Glibc 2.3) and warns about potential 'undefined symbols' problems.
Number: 882 Date: Thu Nov 20 12:33:53 MET 2003 Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.adt Nature: In the front-end part of the CAESAR and CAESAR.ADT compilers for LOTOS specifications, the static semantics analysis phase has changed slightly. From now on, binding of process identifiers is done before binding of gate identifiers. For the user, the effect is the same, except for incorrect LOTOS specifications that contain both erroneous process and gate identifiers; for such specifications, CAESAR and CAESAR.ADT will stop just after displaying error messages related to processes (previously, error messages related to gates were displayed first).
Number: 883 Date: Mon Nov 24 17:09:52 MET 2003 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: src/com/cadp_windows, com/tst Nature: A new shell-script named "cadp_windows" was added. This shell- script is used to adapt the Windows distribution of CADP. Specifically, "cadp_windows": - removes symbolic links in the $CADP directory (symbolic links are a Cygwin-specific extension and are not handled by pure Win32 applications, such as CADP binary programs), - modifies text files by expanding tabulations and converts "\n" into "\r\n", so that text files can be read by simple Windows editors such as Notepad. The "tst" command has also been adapted. On Windows, it now detects the existence of symbolic links in the $CADP directory and, in such case, suggests to execute the "cadp_windows" shell-script.
Number: 884 Date: Tue Nov 25 14:38:08 MET 2003 Authors: Hubert Garavel and Damien Bergamini (INRIA/VASY) Files: bin.*/libcaesar.a Nature: The CAESAR_PRINT_TABLE_1() function of the OPEN/CAESAR library now displays more accurate statistics for hash collision lists.
Number: 885 Date: Tue Nov 25 16:31:47 MET 2003 Author: Radu Mateescu (INRIA/VASY) Files: src/xtl/ctl.mcl Nature: A new library file for EVALUATOR (description of the CTL logic in modal mu-calculus) was added.
Number: 886 Date: Wed Nov 26 11:27:32 MET 2003 Author: Hubert Garavel (INRIA/VASY) Files: com/bcg_edit Nature: The BCG_EDIT tool, when given the "-version" option, would fail with the following message: grep: can't open /incl/bcg_version.h This problem was solved.
Number: 887 Date: Mon Dec 1 12:11:47 MET 2003 Report: Frederic Lang (INRIA/VASY) Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: bin.*/libBCG_IO.a Nature: The Linux version of the BCG_IO tool would generate incorrect Fc2 files. Precisely, the command: bcg_io file.bcg file.fc2 would generate in the Fc2 file an extra number at the end of certain labels, which was then rejected by Fc2 tools such as Fc2Link. This bug, which seemed to occur only on Linux, was fixed.
Number: 888 Date: Mon Dec 1 17:11:03 MET 2003 Authors: Frederic Tronel, Frederic Lang and Hubert Garavel (INRIA/VASY) Files: doc/*/Tronel-Lang-Garavel-03.*, doc/*/Mateescu-03-b.* Nature: Two new papers have been added in the "doc" directory: the former deals with the compositional verification using CADP of the ScalAgent deployment protocol for software components; the latter is about action-based temporal logics for asynchronous systems.
Number: 889 Date: Tue Dec 2 13:10:55 MET 2003 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/bcg_edit, src/com/bcg_edit/bcg_edit.tcl Nature: In the "Help" menu of the BCG_EDIT tool, the "BCG Postscript Format" entry did not work correctly when selected: - On Solaris, nothing happened, - On Windows, a dialog box would open with the message Error: "/Program: not found" These problems were fixed.
Number: 890 Date: Wed Dec 3 15:31:21 MEST 2003 Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2fc2 Nature: A bug was fixed in EXP2FC2, which did not translate the "||" operator into the Fc2 format correctly. The reason was that EXP2FC2 required synchronization only on labels present on both sides of the "||" operator (whereas it should synchronize on all labels instead).
Number: 891 Date: Thu Dec 11 13:05:45 MET 2003 Report: Nicolas Descoubes (INRIA/VASY) and Solofo Ramangalahy (BULL) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.adt, com/cadp_cc Nature: On Linux and Windows systems with Gcc version 3.*, the CAESAR and CAESAR.ADT compilers performed unecessary recompilations. This problem was fixed.
Number: 892 Date: Fri Dec 12 13:51:28 MET 2003 Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.adt Nature: CAESAR.ADT was enhanced with a sort finiteness analysis (fixpoint computation, 250 lines of C code) that classes LOTOS sorts into three categories: - sorts whose value domain is finite, - sorts whose value domain is infinite but bounded by a user-defined iterator, which only enumerates a restricted, finite subset of values, - sorts whose value domain is infinite and not bounded by an iterator. For each sort of the third category, a comment was added in the C code generated by CAESAR.ADT so as to remind the user that it is possible to define an iterator manually for this sort. Then, CAESAR was modified to take advantage of the sort finiteness analysis performed by CAESAR.ADT: CAESAR will now emit a warning if the generated simulator program contains an iteration over the domain of some infinite sort S that lacks an iterator in the ".h" file. This warning is emitted before compiling and executing the simulator program; it has the following form: #185 warning during simulation: foreseeable impossibility to enumerate the domain of some LOTOS sort graph exploration is likely to abort because no iterator exists to enumerate the domain of sort S Later, when executing the simulator program after it is compiled, if the iteration over the domain of S is actually reached, the usual error messages will be displayed: #226 theoretical limitation : domain of an infinite (or complex) sort cannot be enumerated; no available iterator for sort S #203 system error during simulation: termination on SOFTWARE_TERMINATION signal (files completed) quit
Number: 893 Date: Tue Dec 16 11:17:27 MET 2003 Author: Hubert Garavel (INRIA/VASY) Files: incl/caesar_standard.h, bin.*/libcaesar.a, man/*/caesar_standard.*, src/open_caesar/generator.c, src/open_caesar/reductor.c, src/open_caesar/executor.c Nature: A new function named CAESAR_SIGNALS() was added to the "caesar_standard" library of OPEN/CAESAR. This function allowed to simplify and shorten the source code of the GENERATOR, REDUCTOR, and EXECUTOR tools.
Number: 894 Date: Fri Dec 19 15:57:30 MET 2003 Report: Matts Kindahl (Uppsala University, Sweden) Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, man/*/caesar_graph.* Nature: The C code fragment generated by CAESAR for producing the character string corresponding to a label was improved. This C code fragment is used by the "-bcg" option of CAESAR and by the "-open" option of CAESAR (in order to implement the CAESAR_STRING_LABEL() function of OPEN/CAESAR's "caesar_graph" interface). It is not used by the "-aldebaran" and "-exec" options of CAESAR. This C code fragment, which could be slow, was made faster by implementing a hash-based cache table, which avoids useless recomputations. In the alternating bit protocol of demo_02 with 100 messages, CAESAR with "-bcg" option was made 32% faster after this change. In the bounded retransmission protocol of demo_16 with 10 messages, CAESAR was made 6.5% faster. In the worst case where all labels are different, a small penalty (-4.2%) can be observed though. Similarly, the CAESAR_STRING_LABEL() function, which is used intensively in tools such as GENERATOR and EVALUATOR, was made faster (26% faster for GENERATOR and 2-4 times faster for EVALUATOR). In the worst case, a small penalty (-2%) is also observed. In the manual page for "caesar_graph", the implementation note that warned about the potential inefficiency of function CAESAR_PRINT_LABEL() was removed.
Number: 895 Date: Tue Dec 23 17:17:12 MET 2003 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: bin.*/libcaesar.a, man/*/caesar_rename_1.*, doc/*/Garavel-92-a.* Nature: The documentation of the CAESAR_APPLY_RENAME_1() function of the "caesar_rename_1" library was improved: it now specifies that it is forbidden to call CAESAR_APPLY_RENAME_1() by giving to its second argument the value returned by a former call to CAESAR_APPLY_RENAME_1(), as in the following example: CAESAR_APPLY_RENAME_1 (..., CAESAR_APPLY_RENAME_1 (..., ...)) A test was added in the code of CAESAR_APPLY_RENAME_1() so as to detect and reject this situation.
Number: 896 Date: Wed Feb 10 16:21:53 MET 2004 Report: Hubert Garavel (INRIA/VASY) Author: David Champelovier (INRIA/VASY) Files: bin.*/mcl_expand, demos/demo_02/*.mcl, demos/demo_29/*.mcl Nature: The formula language of the EVALUATOR 3 model-checker was enhanced with a concatenation operator (noted `#') operating on label strings and regular expressions. Precisely, the syntax of strings was extended with the following rule: <string> ::= ... | <string1> # <string2> and the syntax of regular expressions was extended with the three following rules: <regexp> ::= ... | <regexp1> # <regexp2> | <string1> # <regexp2> | <regexp1> # <string2> This syntactic extension, combined with the use of the MCL_EXPAND preprocessor, allows to define parameterized action predicates. For instance, the "macros.mcl" file of demo_02 now defines two parameterized macros GET (N) and PUT (N) instead of several macros GET_0, GET_1, ..., PUT_0, PUT_1, etc. Similarly, the "macros.mcl" of demo_29 was simplified; it has now only 183 lines instead of 783 lines.
Number: 897 Date: Mon Feb 16 14:58:29 MET 2004 Authors: Hubert Garavel and Radu Mateescu (INRIA/VASY) Files: doc/Garavel-Mateescu-04, doc/=READ_ME.txt, doc/biblio.bib Nature: A new publication entitled "SEQ.OPEN: A Tool for Efficient Trace-Based Verification" was added to the CADP release. This paper describes SEQ.OPEN, an OPEN/CAESAR-compliant compiler for the SEQUENCE format.
Number: 898 Date: Mon Feb 16 15:04:24 MET 2004 Authors: Gregory Batt, Damien Bergamini, Hidde de Jong, Hubert Garavel, and Radu Mateescu (INRIA) Files: doc/Batt-Bergamini-deJong-et-al-04, doc/=READ_ME.txt, doc/biblio.bib Nature: A new publication entitled "Model Checking Genetic Regulatory Networks using GNA and CADP" was added to the CADP release. This paper describes a connection between the GNA (Genetic Network Analyzer) tool and CADP, which enables the analysis of genetic regulatory networks using standard equivalence checking and model checking techniques.
Number: 899 Date: Wed Feb 25 15:03:06 MET 2004 Report: Wendelin Serwe (INRIA/VASY) Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: src/bcg_edit/bcg_edit.tcl Nature: Two bugs were fixed in the BCG_EDIT tool: - In some cases, refresh would not be done and the BCG_EDIT window could remain grey. - Modifying the Postscript Options (e.g., the radius value) would have no effect.
Number: 900 Date: Wed Feb 25 17:50:28 MET 2004 Report: Jack Abily and Solofo Ramangalahy (BULL) Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: incl/caesar_kernel.h, bin.*/caesar Nature: The "caesar_kernel.h" file defining the EXEC/CAESAR API was enhanced with new functionalities (some of which borrowed from the OPEN/CAESAR API). Several new primitives have been added: CAESAR_CREATE(), CAESAR_DELETE(), CAESAR_CREATE_STATE(), CAESAR_DELETE_STATE(), CAESAR_SIZE_STATE(), and CAESAR_ALIGNMENT_STATE(). Then, two new primitives, CAESAR_KERNEL_SAVE_STATE() and CAESAR_KERNEL_RESTORE_STATE() have been added to save and restore the current simulation state to/from memory. These functions are useful, e.g., to hardware/software cosimulation. The following code fragment shows how these functions can be used: main () { CAESAR_TYPE_STATE CAESAR_S; CAESAR_KERNEL_INIT (NULL); CAESAR_CREATE_STATE (&CAESAR_S); ... /* saving the current simulation state into CAESAR_S */ CAESAR_KERNEL_SAVE_STATE (CAESAR_S); ... /* advancing the simulation by one step */ CAESAR_KERNEL_NEXT (); ... /* backtracking to saved state CAESAR_S */ CAESAR_KERNEL_RESTORE_STATE (CAESAR_S); ... CAESAR_DELETE_STATE (&CAESAR_S); } The C code generated by CAESAR with "-exec" option was modified so as to implement the new primitives added to the EXEC/CAESAR API.
Number: 901 Date: Tue Mar 9 16:47:14 MET 2004 Report: Andrea Martins Araujo (Univ. Federal do Rio de Janeiro, Brasil) Author: Damien Bergamini (INRIA/VASY) Files: src/bcg_edit/bcg_edit.tcl Nature: If a label of BCG GRAPH would contain braces, e.g., as in the following label "GET !1 !true !{}", BCG_EDIT would abort with the following error message: Error in startup script: list element in braces followed by "\))" instead of space ... This problem was solved.
Number: 902 Date: Mon Apr 19 21:39:27 MEST 2004 Author: Hubert Garavel (INRIA/VASY) Files: bin.*/libseqopen.a Nature: Two bugs have been fixed in the SEQ.OPEN tool: - On Windows, ``.seq'' files with lines terminated with CR-LF ("\r\n") instead of LF ("\n") were rejected by SEQ.OPEN, unless the "-seqno" option was selected. - The value given to the CAESAR_HINT_HASH_SIZE_LABEL variable is now equal to 0, and not to sizeof (CAESAR_BODY_LABEL).
Number: 903 Date: Fri Apr 23 10:50:16 MEST 2004 Report: Axel Belinfante (University of Twente, The Netherlands), Olivier Bonaventure (Universite de Liege, Belgium), Francois Germeau (Universite de Liege, Belgium), Michel Jankowski (Universite de Liege, Belgium), Charles Pecheur (INRIA/VASY), Meurig Sage (University of Glasgow, UK), Frederic Tronel (INRIA, VASY), and many others Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar.adt, bin.*/caesar, bin.*/caesar.indent, lib/*.lib, incl/X_*.h, demos/demo_02/BITALT.t, demos/demo_03/DATALINK.t, demos/demo_05/list.lotos, demos/demo_05/user.c, demos/demo_07/overtaking.lotos, demos/demo_08/REL_REL_FIFO.lib, demos/demo_09/INRES_PROTOCOL.lib demos/demo_09/INRES_SERVICE.lib, demos/demo_10/BITALT.t demos/demo_11/rel_rel.t, demos/demo_11/REL_REL_FIFO.lib, demos/demo_16/BRP.t, demos/demo_16/brp_service.t, demos/demo_16/brp_protocol.t, demos/demo_18/transit_node.t, demos/demo_20/REL_REL_FIFO.lib, demos/demo_20/rel_rel.t, demos/demo_23/*.f, demos/demo_26/*.f, demos/demo_31/TYPES.lib, demos/demo_31/SCSI_A.f, demos/demo_31/SCSI_A.t, demos/demo_31/SCSI_B.f, demos/demo_31/SCSI_C.f Nature: The CAESAR.ADT and CAESAR tools have been modified so as to address two issues: a) The former versions of CAESAR.ADT could generate iterators only for "simple" LOTOS sorts, namely natural numbers, enumerated types (including singleton types), and tuple types (see $CADP/doc/pdf/Garavel-89-c.pdf for details). However, more "complex" types would not be supported, even if their domain of values was finite, such as the following LOTOS sort T with two constructors: A (*! constructor *) : BOOL -> T B (*! constructor *) : BOOL, BOOL -> T For those types, CAESAR.ADT would generate an error message about infinite or too complex types; this error message would appear as soon as CAESAR would try to enumerate the domains of these types. A workaround was to provide, for these types, hand-written iterators defined in the ".t" and/or ".f" files. b) In the particular case of "tuples of tuples" types, the iterators generated by CAESAR.ADT for those types would not work properly: the C compiler would reject them because of name clashes between variables declared in iterators. These two issues are now solved by the recent version 5.2 of CAESAR.ADT, which can now generate iterators for all LOTOS sorts with a finite domain of values. In particular, for the previously so-called "complex" sorts, it is no longer needed to provide ".t" and/or ".f" files containing hand-written C code for enumerating the domain of these sorts. However, this improvement requires important changes in the definition of the iterators generated by CAESAR.ADT. One must now distinguish between two different forms of iterators: - "Old-style" iterators are described in the [Garavel-89-c] paper. In a LOTOS specification, an old-style iterator is specified using a special comment of the form: sort S (*! implementedby S ... enumeratedby ENUM_S ... *) It consists of one single C macro-definition ENUM_S to be used as follows for enumerating all values of sort S: S LOOP_VARIABLE; { ENUM_S (LOOP_VARIABLE) { ... loop body parameterized by LOOP_VARIABLE } } For instance, the old-style iterator for enumerating the integer range 0..15 has the form: #define ENUM(X) for ((X) = 0; X <= 15; ++(X)) - "New-style" iterators are introduced with CAESAR.ADT 5.2. In a LOTOS specification, a new-style iterator is specified using a special comment of the form: sort S (*! implementedby S ... iteratedby FIRST_S and NEXT_S ... *) It consists of two C macro-definitions FIRST_S and NEXT_S with the following profiles FIRST_S() : returns a constant value of sort S NEXT_S(X) : tries to advance X to the next value of S and returns a non-zero value iff there exists such a value To enumerate all values of sort S, a new-style iterator must be used as follows: S LOOP_VARIABLE; LOOP_VARIABLE = FIRST_S(); do { ... loop body parameterized by LOOP_VARIABLE } while (NEXT_S (LOOP_VARIABLE)); For instance, the new-style iterator for enumerating the integer range 0..15 has the form: #define FIRST() 0 #define NEXT(X) ((X)++ < 15) Given that there exist two forms of iterators, which one should be preferred? The rule is simple: From now on, the use of new-style iterators is highly recommended in LOTOS files and in their associated hand-written ".t" and ".f" files. Specifically, any further use of "enumeratedby" clauses in special comments is discouraged; "iteratedby" clauses should be used instead. (Backward compatibility issues will be discussed later below). Consequently, the following changes have been brought to the CADP toolbox: - The CAESAR.ADT compiler was modified to handle special comments of the form "iteratedby ... and ..." and to generate appropriate C code for new-style iterators. The "-map" and "-external" options of CAESAR.ADT have been extended accordingly. - The CAESAR.INDENT pretty-printer was modified to accept special comments of the form "iteratedby ... and ...". - The CAESAR compiler was modified to handle special comments of the form "iteratedby ... and ...". In the generated C code, CAESAR can now invoke new-style iterators instead of old-style ones according to rules detailed below. The "-map" option was also updated. - In all "*.lib" files contained in directory $CADP/lib, special comments of the form "enumeratedby" have been replaced with "iteratedby" ones. - Consequently, in all "X_*.h" files contained in directory $CADP/incl, definitions of old-style iterator macros of the form ADT_ENUM_xxx() have been removed and replaced with corresponding pairs of ADT_ENUM_FIRST_xxx() and ADT_ENUM_NEXT_xxx() macros. - In all demo examples containing iterator macros, the "*.lib", "*.h", "*.f", and "*.t" macros have been updated accordingly. The improvement is particularly evident in the case of demo_23, where all the "*.f" containing old- style iterators (a total of 2,464 lines of C code) have been replaced with equivalent, yet shorter ".t" files (only 111 lines in total) containing new-style iterators. Although we recommend to migrate, as much as possible, to new-style iterators, we implemented specific policies to ensure a maximal backward compatibility for already existing LOTOS programs (together with their associated ".t" and ".f" files) making use of old-style iterators. In some cases however, backward compatibility cannot be ensured, thus leaving migration as the only available option. First, to avoid migration problems, one should carefully erase the ".h" files generated by former versions of CAESAR.ADT and the ".c" files generated by former versions of CAESAR. The backward compatibility rules implemented in CAESAR.ADT and CAESAR are the following: (1) If an "iteratedby" comment is present when a LOTOS sort S is declared, then CAESAR.ADT will generate a new-style iterator for S, and CAESAR will invoke this new-style iterator whenever it is necessary to enumerate all values in the domain of S. (2) If an "enumeratedby" comment is present when a LOTOS sort S is declared, then CAESAR.ADT will generate *both* an old-style iterator and a new-style iterator for S, and CAESAR will invoke the old-style iterator whenever it is necessary to enumerate all values in the domain of S. (3) If neither "iteratedby" nor "enumeratedby" comment is present when a LOTOS sort S is declared, then CAESAR.ADT and CAESAR will consider, by default, that sort S has a new-style iterator, the name of which is unspecified and provided automatically by CAESAR.ADT and CAESAR. Thus, CAESAR.ADT will generate a new-style iterator for S, and CAESAR will invoke this new-style iterator whenever it is necessary to enumerate all values in the domain of S. Note: following rules (1)-(3), a new-style iterator will always be generated, independently of whether an "iteratedby" or "enumeratedby" comment is present or not. Note: in the syntax of special comments attached to LOTOS sorts, it is not allowed to specify simultaneously "enumeratedby" and "iteratedby" for the same LOTOS sort. Note: rule (3) breaks backward compatibility (but only if hand-written old-style iterators are given in the ".t" file or if the old-style iterators generated by CAESAR.ADT are invoked in some hand-written C program). Previously, any LOTOS sort without special comment would be given an old-style iterator by default. From now on, it will be given a new-style iterator by default. In that case, we decided to give priority to new-style iterators instead of old-style ones. In addition to the general rules (1)-(3), the following rules detail how particular cases are handled: (4) In the C code generated by CAESAR.ADT, all iteration macros (either old-style or new-style) are enclosed between #ifdef ... and #endif. This allows users to provide their own iterators by defining their own macros in the ".t" file. Because of #ifdef clauses, the C code generated by CAESAR.ADT will not override the actual macro-definitions provided by the user. (5) The new version of CAESAR.ADT will analyze (during its "type survey" phase) the ".t" file (if present) to determine whether it contains hand-written (old-style or new-style) iterators for the LOTOS sorts. Similarly, the new version of CAESAR does the same with the ".h" file, which can be either generated automatically by CAESAR.ADT or provided by the user. Note: for a new-style operator, the existence test is done by checking the existence of both macros, i.e., #if defined(FIRST) && defined (NEXT) If only one macro is defined (i.e., if FIRST() exists but not NEXT(), or vice versa), a warning will be emitted. (6) Because the tests on iterator existence mentioned in rules (4) and (5) are implemented using #ifdef conditions, the new-style iterators provided by the user must always be defined as C macro-definitions and not as C functions (for old-style iterators, this is always the case). Otherwise, the #ifdef condition would always be false. Thus, the rule will be to define FIRST() and NEXT() as macros, even if they could be also defined as C functions. Anyway, if the C code for new-style iterators is so complex that it must be enclosed in functions, say FIRST_FUNCTION() and NEXT_FUNCTION(), it is always possible (and required) to define FIRST() and NEXT() as wrappers around these functions, i.e., #define FIRST() FIRST_FUNCTION() #define NEXT(X) NEXT_FUNCTION(&(X)) (7) If a LOTOS sort S is specified to be "external" using a special comment of the form "(*! ... external *)", and if CAESAR needs to enumerate the value domain of S, then a ".t" file should be present and should contain an iterator for S. CAESAR.ADT will not generate iterators for external sorts and CAESAR will emit warning/error messages when trying to enumerate the value domain of external sorts without hand-written iterators. (8) As regards hand-written old-style iterators given in the ".t" file: it is strongly recommended to rewrite them into new-style iterators. However, to preserve backward compatibility, CAESAR.ADT will generate macro-definitions in which new-style iterators are derived from old-style ones. These new-style operators provided for backward compatibility are functionally correct but slower: when used to enumerate a domain with N values, they take a quadratic amount of time O(N^2) instead of a linear one O(N). Therefore, migrating towards hand-written new-style iterators is advised. (9) The new version of CAESAR.ADT analyzes the constructors of each LOTOS sort in order to detect whether the value domain of each sort is finite or infinite (this is done by computing fixed points, since an infinite sort is characterized by the existence of recursive constructor definitions). Even if a sort S has an infinite value domain, the user can always define, in the ".t" file, an iterator for S that enumerates only a finite subset of the value domain of S. If such an iterator is present, CAESAR and CAESAR.ADT will consider that sort S, although infinite in theory, is actually bounded. Otherwise, sort S will be considered as "truly" infinite. In any case, CAESAR.ADT will not generate iterators for infinite sorts and CAESAR will emit warning/error messages when trying to enumerate the value domain of external sorts without hand-written iterators. Note: For an external, infinite or "complex" sort S, the previous versions of CAESAR.ADT would generate, in the ".h" file, a "fake" iterator CAESAR_ADT_NO_ITERATOR_S() that would, in turn, invoke a macro CAESAR_ADT_NO_ITERATOR ("S") that would itself trigger an exception (using the raise (15) signal) as soon as the iterator is invoked. This is no longer the case: the new version of CAESAR.ADT generates no iterator at all for such sorts and the CAESAR_ADT_NO_ITERATOR_S() and CAESAR_ADT_NO_ITERATOR() macros are no longer defined. Consequently, the new version of CAESAR no longer tries to invoke such macros: instead, during its "type survey" phase, it checks for the existence of iterators in the ".h" file; if it is required to invoke an interator that does not exist, CAESAR will emit first a warning message, followed by an error message during the simulation phase when the iterator is actually invoked. Note that ".c" files generated by former versions of CAESAR should be erased and regenerated, as they might contain invocations to the CAESAR_ADT_NO_ITERATOR_S() and CAESAR_ADT_NO_ITERATOR() macros. (10) Beyond rules (1)-(3), there are two cases in which the new version of CAESAR.ADT tries to generate an old-style iterator for some LOTOS sort S: - when S is declared with an "enumeratedby" comment, as specified by rule (2) - when S is declared with an "iteratedby" comment or without comment, but appears as a field of a tuple sort S' declared with an "enumeratedby" comment (i.e., S' has a unique constructor with one or several parameters of sort S). The second case intends to provide backward compatibility as much as possible. (11) There are situations in which it is not possible to generate an old-style iterator for some sort S, because of issues a) and b) listed above. This happens when S is finite and S does not have a hand-written iterator given in the ".t" file and - either S is a "complex" sort - or S is a tuple sort, the unique constructor of which has at least one parameter of sort S' such that S' is either a tuple sort, or an external sort declared with an "iteratedby" comment, or a sort declared with an "iteratedby" comment for which a hand-written iterator exists in the ".t" file. In such case, CAESAR.ADT will emit a warning message reporting that the old-style iterator cannot be produced. Note: To summarize the benefits of new-style iterators, the new version of CAESAR.ADT can generate an iterator for any LOTOS sort S that is not declared as external and for which no hand-written iterator is given in the ".t" file and that has a finite value domain.
Number: 904 Date: Mon Apr 26 13:25:23 MEST 2004 Report: Bruno Ondet (INRIA/VASY) Author: Nicolas Descoubes (INRIA/VASY) Files: com/tst, com/installator Nature: Two bugs have been fixed in the INSTALLATOR and "tst" tools: both tools would fail if the environment variable $CADP_TMP was set to a non-existent directory, or to a non-writable directory, or to a relative pathname (i.e., not starting with a `/'). From now on, both INSTALLATOR and "tst" will check that $CADP_TMP is set to the absolute pathname of a writable directory and, if not, emit a proper error message.
Number: 905 Date: Tue Apr 27 13:02:01 MEST 2004 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/installator, src/installator/installator.tcl Nature: Many improvements have been made to the INSTALLATOR assistant: - INSTALLATOR now handles file and directory name that contain spaces (such as "Program Files", "Documents and Settings", etc.) - A "Retry" button was added when the FTP connection needed to search for the most recent (beta-)version of CADP fails. - A "Show Prototype License File" was added to display the prototype license file before it is sent to the CADP team. - Environment variables $LANG and $LC_ALL are now set to standard values so as to ensure a correct functioning in any country. - The builtin FTP client of INSTALLATOR now opens "passive" connections (instead of "active" ones), which is more compatible with firewall policies that may exist on the side of CADP users. This avoids most "FTP error" messages, but will not bypass strict firewalls (or iptable/ipchains configurations) that disable all FTP downloads. - Two new buttons labelled "Look instead for a stable version" and "Look instead for a beta version" have been added. They allow to switch easily from a stable version to a beta- version and vice-versa. These buttons allow to recover easily from the omission of the "-beta" version.
Number: 906 Date: Tue Apr 27 15:42:26 MEST 2004 Report: Wendelin Serwe (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: com/svl, bin.*/svl_kernel, man/*/svl.l Nature: The semantics of "root leaf reduction" and "node reduction" have been modified in order to benefit from the most efficient CADP tools available up to date. For instance, certain invocations of ALDEBARAN for reducing composition expressions have been replaced with invocations of BCG_MIN and GENERATOR. Also, to ease the debugging of SVL scripts, the SVL compiler has been modified to keep the intermediate files present in the current directory when a command called by SVL fails.
Number: 907 Date: Tue Apr 27 16:31:48 MEST 2004 Report: Wendelin Serwe (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard Nature: A bug was fixed in SVL. If some label occurring in a hide, rename, or abstraction expression had leading blank characters (inside quotes), these blank characters were ignored, since SVL would remove quotes while creating the rename, hide, or synchronization file.
Number: 908 Date: Fri Apr 30 18:49:46 MEST 2004 Authors: Nicolas Descoubes, Hubert Garavel, and Frederic Lang (INRIA/VASY) Files: bin.win32/libBCG.a Nature: Two problems have been solved in the BCG library: - In some cases, under Windows, the BCG tools could emit a warning message of the form: "bcg_dynamic: stat error on the bcg file" This was due to an error in the system function tmpfile(), which we replaced by a correct function. - The value returned by the system function getdtablesize() was increased from 20 to 40, which now allows to open 37 BCG files simultaneously (instead of 17 as before).
Number: 909 Date: Tue May 4 14:54:12 MEST 2004 Report: Jaco van de Pol (CWI, Amsterdam, The Netherlands) Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: bin.*/libcaesar.a, doc/*/Garavel-92-a.*, man/*/caesar_hide_1.*, man/*/caesar_rename_1.* Nature: The definition of the "gate mode" used in the OPEN/CAESAR libraries "hide_1" and "rename_1" was slightly extended. Previously, the "gate" extended from the beginning of the label up to the first space or tabulation character; now, it extends up to the first space, tabulation character, `?', `!', or `(' character. This definition is compatible with the conventions used in the LOTOS and muCRL languages, but it may break compatibility with some (hypothetical) langages that would allow the `?', `!', or `(' characters in their gate names. The manual pages for the "hide_1" and "rename_1" libraries have been made more precise, by defining exactly the notion of "the first word of S"
Number: 910 Date: Tue May 4 15:17:19 MEST 2004 Report: Nicolas Descoubes (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: incl/caesar_standard.h, incl/bcg_standard.h doc/*/Garavel-92-a.*, man/*/caesar_standard.* Nature: The "caesar_standard.h" include file was modified to ensure compatibility with ISO C: - It no longer includes <malloc.h> (which does not exist on Mac OS X) but includes <stlib.h> instead. The same change was made also to "bcg_standard.h". - Migration from <varargs.h> to <stdargs.h> was achieved. The CAESAR_VARARGS() macro-definition was removed. The prototypes of functions CAESAR_ERROR() and CAESAR_WARNING() was modified to include a first parameter CAESAR_FORMAT (exactly like printf()) in order to be conformant with <stdarg.h>: this change should be totally transparent to the end-users.
Number: 911 Date: Wed May 5 17:58:28 MEST 2004 Report: Jaco van de Pol (CWI, Amsterdam, The Netherlands) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/ocis.a Nature: When launching the OCIS simulator in graphical mode, the CAESAR_INIT_GRAPH() primitive was called twice, which was inefficient and possibly erroneous, since initialization actions that perform side effects should be executed only once.
Number: 912 Date: Wed May 5 18:48:13 MEST 2004 Report: Jaco van de Pol (CWI, Amsterdam, The Netherlands) Authors: Radu Mateescu and Hubert Garavel (INRIA/VASY) Files: bin.*/evaluator.a Nature: The EVALUATOR 3 model-checker is developed using Lex/Yacc. When linking the "evaluator.a" library against other binary objects (e.g., mcrl.open) also developed using Lex/Yacc, name clashes would occur at link edit time. This problem was solved by prefixing all Lex/Yacc-related identifiers in EVALUATOR 3 with a constant string ("evaluator_yy").
Number: 913 Date: Tue May 25 16:08:34 MEST 2004 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: installator.shar, installator.com, cadp_cygwin.com, src/com/install_uncompress Nature: The INSTALLATOR assistant was made more portable: - An increasing number of operating systems no longer have the "uudecode" command installed by default. From now on, INSTALLATOR will build itself its own version of "uudecode" if the standard "uudecode" is absent from the host machine. Consequently, the "cadp_cygwin.com" shell-script for Windows was simplified, as it no longer needs to install "uudecode": this is now done by INSTALLATOR. - Similarly, INSTALLATOR will build itself its own version of "uncompress" if the host machine has neither "uncompress", nor "compress", nor "gunzip", nor "gzip". Also, the "install_uncompress" shell-script was adapted to perform the installation of CADP using "uncompress", "gzip", etc. depending on what exists. Consequently, the shell-script "cadp_cygwin.com" no longer creates a symbolic link named "uncompress" that points to "gunzip".
Number: 914 Date: Tue Jun 1 15:19:44 MEST 2004 Authors: Susanne Graf (VERIMAG) and Wendelin Serwe (INRIA/VASY) Files: demos/demo_32 Nature: A new demo (prepared by Susanne Graf in 1994 and slightly updated by Wendelin Serwe ten years later) was added to the CADP tool set. This demo is about a distributed, lazy cache memory preserving sequential consistency.
Number: 915 Date: Wed Jun 2 18:41:59 MEST 2004 Authors: Frederic Tronel and Frederic Lang (INRIA/VASY) Files: demos/demo_33 Nature: A new demo, dealing with a randomized binary distributed consensus protocol proposed by Ben-Or in 1983, was added to the CADP tool set.
Number: 916 Date: Tue Jun 8 16:58:07 MEST 2004 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: src/com/cadp_cc, src/com/cadp_mail, src/com/cadp_psbox, src/com/cadp_tail, src/com/install_version, src/com/xeuca_convert, src/com/xeuca_man, src/com/xeuca_ps, src/com/xeuca_version, com/tst, com/upc, ./src/eucalyptus/eucalyptus.tcl, ./src/installator/installator.tcl Nature: Changes were made to the CADP tool set in order to support the Linux distribution "gentoo" and, precisely, to avoid error messages such as: > tail: `-10' option is obsolete; use `-n 10' since this > will be removed in the future To solve this problem, all invocations of the form `head -N', `tail -N', and `tail +N' have been replaced, respectively, by `head -n N', `"$CADP"/src/com/cadp_tail -n N', and `"$CADP"/src/com/cadp_tail -n +N', where "cadp_tail" is a new command.
Number: 917 Date: Tue Jun 15 11:59:34 MEST 2004 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: INSTALLATION_0, INSTALLATION_2 Nature: The INSTALLATION_0 and INSTALLATION_2 documentation files have been simplified and adapted to the latest versions of Linux and Cygwin/Windows, and to explain how the $MANPATH variable should be set.
Number: 918 Date: Tue Jun 15 15:21:10 MEST 2004 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: src/com/cadp_web, INSTALLATION_2 Nature: On Solaris and Linux, when the environment variable $NAVIGATOR is not set, it is no longer replaced with "netscape" (since most recent Linuxes do not have Netscape installed); instead, several browsers are tried, including Mozilla, Firefox, etc.
Number: 919 Date: Wed Jun 16 16:04:29 MEST 2004 Authors: Nicolas Descoubes, Hubert Garavel, and Damien Bergamini (INRIA/VASY) Files: tcl-tk/*, bin.*/xsimulator.a, src/ocis/ocis.tcl, src/eucalyptus/eucalyptus.tcl, src/xsimulator/main.tcl, src/bcg_edit/bcg_edit.tcl, src/installator/installator.tcl, src/monitor/main.tcl, src/com/cadp_x11, demos/demo_19/graphics/startsimu Nature: Several changes were made to port the graphical tools of CADP to Mac OS X: - The version of Tcl/Tk shipped with CADP was upgraded to version 8.4.6. - The version of Tix shipped with CADP was upgraded to version 8.2. - A new shell-script named cadp_x11 was added.
Number: 920 Date: Thu Jul 1 16:49:43 MEST 2004 Authors: Nicolas Descoubes and Wendelin Serwe (INRIA/VASY) Files: doc/pdf/Aguilar-Garavel-et-al-01.pdf, doc/pdf/Chehaibar-Garavel-et-al-96.pdf, doc/pdf/Garavel-98.pdf, doc/pdf/Garavel-Lang-01.pdf, doc/pdf/Garavel-Mounier-96.pdf, doc/pdf/Garavel-Viho-Zendri-00.pdf, doc/pdf/Mateescu-00-a.pdf, doc/pdf/Mateescu-96.pdf, doc/pdf/Mateescu-Sighireanu-00.pdf, doc/pdf/Pace-Lang-Mateescu-03.pdf, doc/pdf/Sighireanu-Mateescu-97.pdf Nature: Several PDF files included in the CADP distribution were incorrect (i.e., produced by a bogus PDF document generator). These files have been replaced with correct ones.
Number: 921 Date: Fri Jul 2 17:04:15 MEST 2004 Report: Stefan Blom (CWI, Amsterdam, The Netherlands) Author: Hubert Garavel (INRIA/VASY) Files: com/arch, src/com/cadp_cc, src/com/cadp_cpp, src/com/cadp_crlf, src/com/cadp_rm, src/com/install_df, src/com/xeuca_shell, src/com/cadp_which, src/com/xeuca_ps, src/com/xeuca_term Nature: The CADP tool set was ported to AMD's "Opteron" processors running in 32-bit mode under Linux.
Number: 922 Date: Mon Jul 5 18:17:49 MEST 2004 Report: Hubert Garavel (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard Nature: The warning messages possibly issued by CAESAR.ADT and CAESAR (in the ".err" file) during the compilation of a LOTOS description are now reproduced by the SVL compiler in the SVL log file. SVL also reports the occurrence of such message to the user, and keeps the ".err" file in the current directory until the ``svl -clean'' command is executed.
Number: 923 Date: Thu Jul 8 19:29:23 MEST 2004 Authors: Hubert Garavel and Radu Mateescu (INRIA/VASY) Files: bin.*/libcaesar.a, incl/caesar_standard.h, man/*/caesar_standard.*, doc/*/Garavel-92-a.* Nature: A new function named CAESAR_TEMPORARY_FILE() was added to OPEN/CAESAR's "standard" library.
Number: 924 Date: Tue Jul 13 11:21:45 MEST 2004 Report: Jack Abily (BULL) and Axel Belinfante (University of Twente) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: src/com/cadp_cc, src/linux/bin.iX86/libcpatch-2.2.5.a Nature: Backward compatibility support was added for the old GNU C library "glibc 2.2.5" used in former versions of Linux such as Redhat 7.2. This avoids error messages about undefined symbols at link edit time, such as: > .../CADP/bin.iX86/libBCG.a(bcg_read_2.o): In function > `BCG_STRING_TO_UPPER': undefined reference to > `__ctype_toupper_loc' or: > .../CADP/bin.iX86/libBCG.a(bcg_stream.o): In function > `BCG_PRINT_IN_DOUBLE_QUOTE': undefined reference to > `__ctype_b_loc'
Number: 925 Date: Tue Jul 13 14:47:58 MEST 2004 Author: Damien Bergamini (INRIA/VASY) Files: bin.*/caesar.bdd, man/*/caesar.bdd.* Nature: A new tool named CAESAR.BDD was added to the CADP tool set. This tool uses Binary Decision Diagrams to compute structural properties of Basic Petri Nets. See the "caesar.bdd" manual page for details.
Number: 926 Date: Tue Jul 13 17:11:50 MEST 2004 Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, man/*/caesar.* Nature: The optimization E7 of CAESAR, which removes all network transitions that never fire according to Petri net rules, was redesigned. The former optimization E7 was based on the explicit enumeration of all reachable markings ("explicit-state" approach); it was optional and only executed if the "-e7" option was given on the command-line when invoking CAESAR. The new optimization E7 is based on Binary Decision Diagrams and relies on the CAESAR.BDD tool (see item #925 above). Since this new optimization is much faster, it is no longer optional: it is performed by default every time CAESAR is invoked. Experiments have shown that the new optimization E7 could handle large LOTOS examples that could not be processed by the old optimization, due to lack of memory. We found no counter-example that the old optimization, but not the new one, could handle. Moreover, on several hundreds of LOTOS examples handled by both the old and new optimizations, the new optimization proved to be faster than the old optimization by 19%. On the same hundreds of examples, it appeared that applying the new optimization E7 is as fast as applying no optimization E7, either new or old (in fact, it is even slightly faster by 0.6%). Thus, the time spent in BDD computations to remove dead transitions is totally compensated by the state space reductions and time savings arising from a smaller network. The semantics of CAESAR's command-line options was modified as follows: - A new option "-e7old" was added for backward compatibility, so as to retain the former behaviour of CAESAR. This option performs the old optimization E7 instead of the new one. - Option "-e7" no longer performs the old optimization E7; its new meaning is to disable the new optimization E7. - In absence of both "-e7" and "-e7old", the new optimization E7 is peformed by default. In summary, there are now three cases: - If you do not want optimization E7: use "-e7" option. - If you want the old optimization E7: use "-e7old" option. - If you want the new optimization E7: use no option. The CAESAR manual page was updated accordingly.
Number: 927 Date: Thu Jul 15 12:03:01 MEST 2004 Report: Nicolas Descoubes (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: src/com/xeuca_info Nature: Changes were brought to the "xeuca_info" shell-script in order to support recent Linux distributions and, precisely, to avoid error messages of the form: > cut: invalid byte, character or field list
Number: 928 Date: Fri Jul 16 14:40:55 MEST 2004 Author: Damien Bergamini (INRIA/VASY) Files: ./INSTALLATION_MACOS, ./INSTALLATION_WINDOWS, ./INSTALLATION_0 Nature: Following the efforts under way to port CADP to Mac OS X, the documentation files have been updated: - A new file named INSTALLATION_MACOS explains the preliminary steps needed to get CADP working on Mac OS X. - The already existing file INSTALLATION_0 was renamed into INSTALLATION_WINDOWS, and a symbolic link INSTALLATION_0 pointing to INSTALLATION_WINDOWS was installed for backward compatibility.
Number: 929 Date: Tue Jul 20 11:33:57 MEST 2004 Report: Humberto Osorio (Universidade Federal do Ceara, Brazil) Author: Hubert Garavel (INRIA/VASY) Files: bin.iX86/* Nature: The Linux binaries of CADP tools have been made compatible with recent Linux distributions based on the Linux 2.6 kernel, such as Mandrake version 10.
Number: 930 Date: Wed Jul 21 20:30:43 MEST 2004 Report: Lars-Ake Fredlund (SICS, Sweden), Marc Herbert (INRIA/VASY), and Guy Tremblay (Universite du Quebec a Montreal, Canada) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/* Nature: 8-bit characters are now allowed in LICENSE files. Previously, only 7-bit characters were permitted, and the use of 8-bit characters would generate error messages of the form: > *018 protection violation: > falsified license > wrong global checksum > quit
Number: 931 Date: Fri Jul 23 16:54:03 MEST 2004 Report: Gert Huisman (Vrije Universiteit Amsterdam, The Netherlands), and Christophe Joubert (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/*, com/rfl, INSTALLATION_3 Nature: The CADP licensing mechanism was enhanced to allow multiple license files. In addition to the primary license file named "$CADP/LICENSE", it is now possible to have a secondary license file named "$CADP/LICENSE.1", and even a tertiary license file named "$CADP/LICENSE.2". These files will be checked in the following order: primary, then secondary, then tertiary. This feature is intended to administrators of clusters or large networks with hundreds of machines: secondary/ tertiary license files allow to obtain licenses for machines that were down or otherwise unavailable at the time the primary license file was prepared.
Number: 932 Date: Sat Aug 7 11:28 MES 2004 Report: Katsumi Wasaki (Shinshu University, Nagano, Japan) Author: Hubert Garavel (INRIA/VASY) Files: demos/demo_04/EXP.t, incl/caesar_kernel.h Nature: The two files "EXP.t" and "caesar_kernel.h" were changed so as to remplace the inclusion of <malloc.h> (which does not exist on Mac OS X) by the inclusion of <stdlib.h>. This suppresses the following error messages emitted by CAESAR and CAESAR.ADT: > .. malloc.h: No such file or directory > #127 error in file ``.h'' during type survey: > survey program is rejected by the C compiler > quit
Number: 933 Date: Tue Aug 24 14:57:26 MEST 2004 Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2c, bin.*/libexpopen.a, bin.*/libexp_open.a, com/exp.open, man/*/exp.open.* Nature: The EXP.OPEN 1.0 tool, which allows to compile networks of communicating LTSs into the OPEN/CAESAR "caesar_graph" API, was replaced by a new version EXP.OPEN 2.0 entirely rewritten from scratch. The input language of EXP.OPEN 2.0 (i.e., the contents of ".exp" files) is a superset of the input language of EXP.OPEN 1.0. That is, the networks of communicating LTSs accepted by EXP.OPEN 1.0 (i.e., LTS files combined using LOTOS parallel composition and gate hiding operator) are still accepted by EXP.OPEN 2.0, which also brings the following extensions: - The "hide" operator was generalized so that labels can be defined using regular expressions, possibly in a separate file, according to the conventions of the "caesar_hide_1" library. - Two new operators, "rename" and "cut", were added to the input language of EXP.OPEN 2.0. Like the generalized "hide" operator, these operators allow labels to be specified using regular expressions, possibly in a separate file. - The generalized parallel composition ("par") operator of E-LOTOS was also added; this operator provides advanced features, including "n among m" synchronization. - Finally, operators brought from various formalisms were also added to the input language of EXP.OPEN 2.0, namely: - a parallel composition operator based on the notion of synchronization vectors (as in the MEC and FC2 tools), - the parallel composition operators of the CCS, CSP, and mCRL process algebras, - the renaming, cut, and hiding operators of the CCS and CSP process algebras. The command-line syntax of EXP.OPEN 2.0 also extends that of EXP.OPEN 1.0 with new functionalities: - New "-branching" and "-ratebranching" options allow to use partial order methods to reduce (at least, partially) state spaces while preserving branching and stochastic branching bisimulations, respectively. By default, strong bisimulation is preserved. - A new "-network" option allows to translate the EXP.OPEN 2.0 input language into other (lower-level) formats. Currently, two such formats are supported: the Petri net format of the PEP tool (use "-network pep" option) and the parallel FC2 format (use "-network fc2"). - New options ("-ccs", "-csp", "-elotos", "-lotos", "-mcrl") allow to interpret the input language of EXP.OPEN 2.0 according to the conventions used in the languages CCS, CSP, E-LOTOS, LOTOS, and muCRL, respectively. These conventions rule, for instance, the case sensitivity in identifiers, the string denoting the silent action ("i", "tau", etc.), the semantics of the "||" operator, etc. EXP.OPEN 2.0 corrects all known bugs in EXP.OPEN 1.0. In particular: - the scope of nested "hide" operators is now correctly handled, - there is no more limitation in the number of labels that EXP.OPEN can process, and - function CAESAR_HASH_SIZE_STATE() of the OPEN/CAESAR "caesar_graph" API now returns a correct result. In the demonstration examples present in the $CADP/demos directory, EXP.OPEN 2.0 uses about 2 times less memory than EXP.OPEN 1.0, and runs from 1.5 to 45 times faster. EXP.OPEN 2.0 provides the user with a better understanding of the generated LTS by indicating, for each of its actions, the history of successive operations (synchronizations, hidings, renamings) that engendered this action. Note: EXP.OPEN 2.0 uses a new library named "libexp_open.a", which replaces the older "libexpopen.a". See the EXP.OPEN manual page for more information.
Number: 934 Date: Tue Aug 24 16:09:39 MEST 2004 Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: bin.*/exp2fc2, com/exp2fc2, man/*/exp2fc2.* Nature: The EXP2FC2 program (which contained a few bugs and only supported the input language of EXP.OPEN 1.0) was replaced by a simple shell-script that invokes EXP.OPEN 2.0 with the "-network fc2" option. Indeed, exp2fc2 FILE.exp FILE.fc2 is equivalent to: exp.open -case -network fc2 FILE.exp The manual page for EXP2FC2 was updated.
Number: 935 Date: Thu Aug 26 14:57:26 MEST 2004 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/rfl Nature: The option "-l" of the RFL shell-script was enhanced so as to support the secondary and ternary license files, if any (see item #931 above).
Number: 936 Date: Fri Aug 27 10:36:35 MEST 2004 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/*, src/com/*, ./INSTALLATION_1, ./INSTALLATION_2, ./INSTALLATION_3, ./INSTALLATION_4 Nature: Most CADP shell-scripts were modified in order to support spaces in file names. However, this work is not complete yet, so the use of spaces in file names is still discouraged. Also, the documentation files INSTALLATION_* were updated: double quotes were added around every occurrence of $CADP to deal with the presence of spaces in directory and file names.
Number: 937 Date: Tue Aug 31 11:38:51 MEST 2004 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/tst, src/com/cadp_adjust, src/com/cadp_windows, src/installator/installator.tcl, ./INSTALLATION_4 Nature: The existing "cadp_windows" shell-script was renamed into "cadp_adjust". This shell-script fixes two issues arising on Windows: - The Cygwin symbolic links are not recognized by standard Win32 applications, among which the CADP binaries; the script "cadp_adjust" solves this problem by replacing all symbolic links by their target. - The text files of CADP contain only LF characters and, thus, do not display properly on certain Windows applications such as Notepad; the script "cadp_script" solves this problem by replacing every LF character by a pair CR/LF. The INSTALLATOR assistant was modified to invoke "cadp_adjust" automatically when installing CADP on a Windows system. The "INSTALLATION_4" file (directives for manual installation of CADP) was modified to mention that "cadp_adjust" must be invoked. Finally, the "tst" shell-script was adapted to detect whether "cadp_adjust" has been been correctly applied.
Number: 938 Date: Wed Sep 1 15:13:28 MEST 2004 Report: Damien Bergamini (INRIA/VASY) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: bin.macOS/xsimulator.a Nature: The XSIMULATOR tool was ported to Mac OS X. It will launch automatically the X11 server if this server is not already running. This is done by invoking the $CADP/src/com/cadp_x11 shell-script.
Number: 939 Date: Mon Sep 6 10:30:49 MEST 2004 Author: David Champelovier (INRIA/VASY) Files: com/caesar.open Nature: The "caesar.open" shell-script no longer sets the environment variable $CADP_LANGUAGE to "-english", as this was overriding the genuine value of $CADP_LANGUAGE set by the user and the "-french" option possibly passed to "caesar.open".
Number: 940 Date: Tue Sep 7 14:44:02 MEST 2004 Report: Damien Bergamini (INRIA/VASY) Author: Nicolas Descoubes (INRIA/VASY) Files: src/bcg_edit/bcg_edit.tcl Nature: A bug was fixed in the BCG_EDIT tool. After selecting "Load BCG" in the "File" menu, and then making a double click (instead of a simple click) on a directory name different from the parent directory "..", a warning message would occur: > bad listbox index "": must be active, anchor, end, > @x,y, or a number
Number: 941 Date: Thu Sep 9 15:05:57 MEST 2004 Report: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar.bdd, bin.*/caesar, man/*/caesar.bdd.* Nature: The CAESAR.BDD tool was enhanced in several ways: - The Basic Petri Net format was extended with, for each unit, the list of its sub-units; - CAESAR.BDD now handles properly user interrupts (Ctrl-C); - CAESAR.BDD now returns different exit codes for each cause of error; - A bug with option "-unit" was fixed. The CAESAR compiler was also enhanced to recover from the various errors faced by CAESAR.BDD, to display relevant error messages, to abort optimization E7 properly, and to continue its execution.
Number: 942 Date: Mon Sep 13 10:30:10 MEST 2004 Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: demos/demo_26/* Nature: The ADT_ENUM_NEXT_NAT() iterators defined in the ".f" files of demo_26 have been updated to avoid a "macro redefined" warning produced by the C compiler. Also, all the ".f" files have been renamed into ".t" files, to follow the CAESAR.ADT conventions.
Number: 943 Date: Mon Sep 13 10:59:08 MEST 2004 Report: David Champelovier (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/libBCG_IO.a Nature: A bug was fixed in the BCG_IO_WRITE_BCG_END() function of the "bcg_write" API; in some cases, this bug would cause a segmentation fault / core dump on Linux.
Number: 944 Date: Fri Sep 17 11:33:25 MEST 2004 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/rfl, com/installator, src/installator/*, installator.shar Nature: The CADP installation procedure was enhanced so that CADP users can receive by e-mail a reminder message a fixed number of days (by default, 30 days) before their license expires. This new feature required the following changes: - LICENSE files now contain the e-mail address of the person to whom the reminder message will be sent; - LICENSE files also contain the number of days in advance at which the reminder must be set; - The RFL shell-script was extended with two new options ("-e" and "-r") that extract from LICENCE files the e-mail address and the number of days, respectively; - INSTALLATOR now always asks for an e-mail address (before, this was optional for Unix and only mandatory on Windows); incidentally, this will solve the problem of LICENSE files sent to the CADP team from the "root" account of Unix, which could be returned only to "root" and not to a real user e-mail address.
Number: 945 Date: Fri Sep 24 10:03:30 MEST 2004 Report: Marc Herbstritt (Albert-Ludwigs University, Freiburg, Germany), Venkatesh P. Ranganath (Kansas State University, USA), and Judi Romijn (Technical Univ. of Eindhoven, The Netherlands) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: src/installator/installator.tcl, src/com/install_uncompress Nature: On recent Linux systems equipped with GNU tar version 1.14, the INSTALLATOR assistant would fail with the following error message: > Extracting files from archive CADP_...tar.Z > ./src/linux/bin.iX86/ > ./src/linux/bin.iX86/libcpatch-2.2.5.a > ./gc/bin.iX86/ > ./gc/bin.iX86/COPYRIGHT_GC > ... > ./bin.iX86/cadp_hostinfo > ./bin.iX86/bcg_graph > ./bin.iX86/caesar.bdd > Error while decompressing This problem (which did not occur with the previous version 1.13.25 of GNU tar) is due to an unexpected change in the behaviour of GNU tar, the new version of which writes a message (of the form "tar: Read 1536 bytes from -") to the stderr stream even if the extraction performed successfully. The presence of such messages on the stderr stream confused INSTALLATOR, which believed that an error occurred. This problem was fixed. Additionally, to prevent similar errors arising from further modifications of GNU tar, gzip, or uncompress, various buttons were added ("Abort", "Retry", "Continue"), so that the user can decide to continue if he/she believes that extraction performed correctly.
Number: 946 Date: Fri Sep 24 10:50:51 MEST 2004 Report: Christophe Lohr (Concordia University, Montreal, Canada), and Philippe Marty (Universite de Paris-Sud, Orsay, France) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: src/installator/installator.tcl, ./INSTALLATION_3, ./INSTALLATION_4 Nature: The INSTALLATOR assistant was modified to address the case of machines that cannot send prototype license files using e-mail (and also the case of machines that can send e-mail actually, but in an undetectable way, i.e. a way that cannot be predicted reliably in advance). By default, the new version of INSTALLATOR will send the prototype license files using the FTP protocol, i.e., by uploading these files onto the VASY FTP server. However, INSTALLATOR will still provide the user with 3 possibilities: "Send by FTP", "Send by e-mail", and "Save to disk".
Number: 947 Date: Mon Sep 27 09:12:00 MEST 2004 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel Nature: A bug was fixed in SVL to handle non-quoted identifiers correctly when the "-case" option is set.
Number: 948 Date: Thu Sep 30 17:04:45 MEST 2004 Report: Greg Eakman (Boston University, Massachussets, USA) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/installator, src/installator/installator.tcl, src/com/install_clone, src/com/install_lock, src/installator/bin.win32/install_lock.exe Nature: A double problem with the Windows version of INSTALLATOR was solved. This problem comes from the "locks" that Windows puts on files and directories when they are in use. When locked, a file or a directory cannot be removed or modified. Thus, the Windows version of INSTALLATOR would fail to upgrade CADP properly if, for instance, a binary program of CADP was already executing (first problem). Also, when INSTALLATOR was launched from an existing CADP installation (i.e., by running the command "$CADP/com/installator"), rather than launched from the "installator.com" file, this would create a lock on the existing "$CADP/com" directory (because of the existence of a running program in this directory), and thus this directory would become unwritable and would prevent CADP from being upgraded properly (second problem). To solve these two Windows-specific locking problems, the following changes were made to INSTALLATOR: - When "$CADP/com/installator" is launched to upgrade an existing version of CADP (located in directory "$CADP"), INSTALLATOR will start by "cloning" itself, i.e., copying all its files in "/tmp" and re-launching itself from there. This avoids creating a lock on "$CADP/com" and, thus, solves the second problem. - In addition, a test was added to terminate the execution of INSTALLATOR if the "$CADP" directory is locked, i.e., if some CADP program is already executing. This addresses the first problem.
Number: 949 Date: Mon Oct 4 17:01:07 MEST 2004 Report: Hubert Garavel and Radu Mateescu (INRIA/VASY) Author: Nicolas Descoubes (INRIA/VASY) Files: com/upc, com/rfl, com/cadp_hostname Nature: A minor problem of RFL on Solaris was fixed. This problem (upper-case letters instead of lower-case letters in prototype license files) only occurred when RFL invoked "/usr/bin/tr" instead of "/usr/ucb/tr".
Number: 950 Date: Mon Oct 4 19:14:13 MEST 2004 Report: Hubert Garavel (INRIA/VASY) Author: Nicolas Descoubes (INRIA/VASY) Files: com/tst Nature: Changes were brought to "tst" in order to allow a better detection of the Glibc version number. The modified version of "tst" now uses three different methods to ensure that the Glibc version number will be properly detected.
Number: 951 Date: Fri Oct 8 14:46:09 MEST 2004 Report: Frederic Lang (INRIA/VASY) Authors: Damien Bergamini and Hubert Garavel (INRIA/VASY) Files: bin.*/bcg_min Nature: A bug in the implementation of the branching stochastic bisimulation was fixed in the BCG_MIN tool. Due to this bug, the reduction was not "total" in the sense that one single call to "bcg_min -rate -branching" would not always yield the minimal stochastic LTS (in some cases, several calls would be necessary).
Number: 952 Date: Tue Oct 12 12:17:52 MEST 2004 Report: Solofo Ramangalahy (BULL) and Ken Turner (University of Stirling, Scotland, UK) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: com/rfl, src/com/install_rfl, src/installator/installator.tcl Nature: The RFL and INSTALLATOR tools were modified to provide a better support for the SSH protocol. Previously, the RFL command tried to estblish remote connections using, first, "rsh", then "ssh", then "krsh", and thus could be slow (due to timeouts) for machines supporting "ssh" but not "rsh". To address this issue, a new "-p" option was added to RFL, which specifies the protocol ("rsh", "ssh", or "krsh") to be tried first when attempting remote connections. The shell "install_rfl" was also modified to support this "-p" option. Finally, INSTALLATOR was modified to offer the choice between these three protocols.
Number: 953 Date: Tue Oct 12 15:29:32 MEST 2004 Report: Tomas Barros (INRIA/OASIS, Sophia-Antipolis, France) Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: installator.shar Nature: The Mac OS X version of "installator.shar" was modified to solve a problem with the version of "uudecode" present on MacOS X 10.3; for security purpose, this particular version of "uudecode" requires a "-s" option, otherwise it removes the last "/" in the pathnames, leading to error messages of the form: > installator.shar: line 807: /tmp/_sh01984/cmp: > No such file or directory This problem was solved.
Number: 954 Date: Mon Oct 18 11:20:53 MEST 2004 Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2c, man/*/exp.open.* Nature: A new "-interface" option was added to EXP.OPEN 2.0. This option allows to synthesize an "interface" expressing the synchronization constraints imposed on one LTS by (a subset of) its neighbour LTSs in a parallel composition expression. Practically, EXP.OPEN with option "-interface" generates a C file containing an OPEN/CAESAR graph module (implicit LTS) and a ".sync" file containing a list of labels. The graph module can be then translated into an interface (explicit LTS) using the GENERATOR tool. The resulting LTS can then be given, together with the ``.sync'' file, to the PROJECTOR tool. See the updated "exp.open" manual page for more details.
Number: 955 Date: Tue Oct 19 16:42:10 MEST 2004 Authors: Nicolas Descoubes, Hubert Garavel, Christophe Joubert, and Radu Mateescu (INRIA/VASY) Files: man/*/bcg_info.*, man/*/bcg_labels.*, man/*/bcg_min.*, man/*/caesar_*.*, doc/*/Garavel-92-a.* Nature: Various mistakes have been fixed in the BCG_INFO, BCG_LABELS, and BCG_MIN manual pages, and in the OPEN/CAESAR reference manual.
Number: 956 Date: Thu Oct 21 15:03:55 MEST 2004 Authors: Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: incl/caesar_hash.h, bin.*/libcaesar.a, man/*/caesar_hash.*, doc/*/Garavel-92-a.* Nature: In the "hash" library of OPEN/CAESAR, the existing macro- definitions CAESAR_STATE_i_HASH(), where i = 0..6, and CAESAR_LABEL_0_HASH() have been turned into functions, so that they can be passed as actual parameters to other functions. Also, new functions CAESAR_LABEL_i_HASH(), where i= 1..6, and CAESAR_STRING_0_HASH() have been added to the "hash" library.
Number: 957 Date: Thu Oct 21 16:55:58 MEST 2004 Author: Hubert Garavel (INRIA/VASY) Files: incl/caesar_standard.h, bin.*/libcaesar.a, man/*/caesar_standard.*, doc/*/Garavel-92-a.* Nature: The "standard" library of OPEN/CAESAR was enhanced in three ways: - Better explanations about CAESAR_ALIGNMENT_POINTER() and the notion of alignment factor have been added. - Five new "functional" types have been added, respectively: CAESAR_TYPE_GENERIC_FUNCTION, CAESAR_TYPE_COMPARE_FUNCTION, CAESAR_TYPE_HASH_FUNCTION, CAESAR_TYPE_CONVERT_FUNCTION, and CAESAR_TYPE_PRINT_FUNCTION. - A new function CAESAR_FUNCTION_NAME() was added, which allows a better display of the predefined function names of the OPEN/CAESAR library.
Number: 958 Date: Thu Oct 21 18:16:09 MEST 2004 Authors: Frederic Lang and David Champelovier (INRIA/VASY) Files: com/svl, bin.*/svl_kernel, src/svl/standard Nature: SVL was improved in order to work correctly when the $CADP environment variable contains spaces or blank characters.
Number: 959 Date: Mon Oct 25 15:21:22 MEST 2004 Author: Hubert Garavel (INRIA/VASY) Files: incl/caesar_block_1.h, bin.*/libcaesar.a, man/*/caesar_block_1.*, doc/*/Garavel-92-a.* Nature: A new OPEN/CAESAR library named "block_1" was added to CADP. This library provides some form of object-orientation for memory blocks of different classes (ordinary, empty, state, label, or string).
Number: 960 Date: Wed Nov 3 16:32:35 MET 2004 Authors: Hubert Garavel and Nicolas Descoubes (INRIA/VASY) Files: incl/caesar_mask_1.h, bin.*/libcaesar.a, man/*/caesar_mask_1.*, doc/*/Garavel-92-a.* Nature: A new OPEN/CAESAR library named "mask_1" was added to CADP. This library allows to perform sequences of hiding and renaming operations on memory blocks (labels, strings, ...) in the style of BCG_LABELS command-line options.
Number: 961 Date: Wed Nov 3 17:33:08 MET 2004 Authors: Hubert Garavel and Nicolas Descoubes (INRIA/VASY) Files: src/open_caesar/generator.c, src/open_caesar/generator2.c, src/open_caesar/reductor.c, src/open_caesar/reductor2.c, src/open_caesar/READ_ME, incl/bcg_options.h Nature: The GENERATOR and REDUCTOR tools have been enhanced with new command-line options: - Options "-uncompress", "-compress", "-register", "-short", "-medium", "-size", and "-tmp" allow to control the generated BCG graph. For these options, the "bcg_options.h" header file was added in directory $CADP/incl. - Options "-hide" and "-rename" (together with the qualifiers "-total", "-partial", "-gate", "-single", and "-multiple") perform on-the-fly hiding and/or renaming of labels. These options are implemented using the recent "mask_1" library (see item #960 above). The source C code of GENERATOR and REDUCTOR is available in directory $CADP/src/open_caesar. The former versions of GENERATOR and REDUCTOR (which are easier to read and to understand than the latest versions) are kept in that directory for user information (see the READ_ME file for information).
Number: 962 Date: Mon Nov 15 12:34:39 MET 2004 Author: Hubert Garavel (INRIA/VASY) Files: incl/caesar_stack_1.h, bin.*/libcaesar.a, man/*/caesar_stack_1.*, doc/*/Garavel-92-a.* Nature: The programming interface of OPEN/CAESAR's "stack_1" library was improved: - A new function type CAESAR_TYPE_OVERFLOW_FUNCTION_STACK_1 was added to caesar_stack_1.h. - Consequently, the type of the 3rd argument CAESAR_OVERFLOW of function CAESAR_CREATE_STACK_1() was changed into CAESAR_TYPE_OVERFLOW_FUNCTION_STACK_1. The explanations given in the "stack_1" manual page regarding this argument were simplified. This change is fully compatible at the binary level, meaning that all OPEN/CAESAR application tools available under binary form (".a" or ".o") need not be recompiled with the modified "caesar_stack_1.h" file and can be directly linked against the modified "libcaesar.a" library.
Number: 963 Date: Wed Nov 17 15:27:24 MET 2004 Authors Nicolas Descoubes and Hubert Garavel (INRIA/VASY) Files: bin.*/bcg_labels Nature: The code of the BCG_LABELS tool was greatly simplified by taking advantage of the recent "mask_1" library (see item #960 above). This simplification should be totally transparent to the end-user.
Number: 964 Date: Thu Nov 25 14:28:06 MET 2004 Report: Damien Bergamini (INRIA/VASY) Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: ./tst Nature: The "tst" shell-script was improved in order to detect, on MacOS, situations in which the maximal size allocated to the execution stack is unsufficient. For instance, setting a limit of 512 kbytes to the execution stack might cause BCG_MIN to abort with a core dump. The improved "tst" will warn about such situations.
Number: 965 Date: Wed Dec 1 17:59:33 MET 2004 Author: Hubert Garavel (INRIA/VASY) Files: bin.*/libBCG_IO.a, man/*/bcg_write.* Nature: In function BCG_IO_WRITE_BCG_BEGIN() of the "bcg_write" API, it is now permitted to give a NULL value to the parameter bcg_creation_comment.
Number: 966 Date: Fri Dec 3 15:07:12 MET 2004 Authors: Holger Hermanns (Saarland University), Christophe Joubert, Hubert Garavel, and David Champelovier (INRIA/VASY) Files: bin.*/bcg_steady, bin.*/bcg_transient, bin.*/READ_ME man/*/bcg_steady.*, man/*/bcg_transient.* Nature: Two new tools, BCG_STEADY and BCG_TRANSIENT, for performance evaluation have been integrated into the CADP toolbox. The BCG_STEADY tool performs steady-state analysis, and the BCG_TRANSIENT tool performs transient analysis. For details, see the manual pages.
Number: 967 Date: Fri Dec 10 14:44:28 MET 2004 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard, man/man.*/svl.* Nature: A semantic bug was fixed in SVL. An ``abstraction'' operator with a synchronization set of the form ``all but'' followed by an empty list of gates or labels was processed exactly as an ``abstraction'' operator without synchronization set. SVL was modified to implement the correct semantics, namely: - In the former case, synchronization is required on all gates or labels (depending on the matching mode) that occur in the interface graph, except "i". - In the latter case, synchronization is required on all gates or labels (depending on the matching mode) that occur in any of the interface and/or specification graphs, except "i".
Number: 968 Date: Mon Dec 13 09:10:15 MET 2004 Author: Wendelin Serwe (INRIA/VASY) Files: incl/caesar_hash.h, bin.*/libcaesar.a, man/*/caesar_hash.*, doc/*/Garavel-92-a.* Nature: The dispersion of the hash function CAESAR_STRING_0_HASH() was improved.
Number: 969 Date: Mon Dec 13 15:34:45 MET 2004 Author: Hubert Garavel (INRIA/VASY) Files: incl/caesar_block_1.h, incl/caesar_area_1.h, bin.*/libcaesar.a, man/*/caesar_block_1.*, man/*/caesar_area_1.*, doc/*/Garavel-92-a.* Nature: The recent "block_1" library of OPEN/CAESAR was renamed into "area_1" in order to avoid confusion with the notion of block used in the "solve_1" library to be added soon to OPEN/CAESAR (see item #979 below). Consequently, the include files and manual pages named "caesar_block_1.*" have been renamed into "caesar_area_1.*". Also, the "area_1" library was extended with the notion of empty area. Finally, a new function CAESAR_HASH_STRING_AREA_1() was added.
Number: 970 Date: Mon Dec 13 19:01:18 MET 2004 Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: incl/caesar_table_1.h, bin.*/libcaesar.a, man/*/caesar_table_1.*, doc/*/Garavel-92-a.*, com/upc Nature: The "table_1" library of OPEN/CAESAR, and especially its CAESAR_CREATE_TABLE_1() function, have been enhanced in subtle ways. The rationale for these changes are threefold: - Take advantage of the new "area_1" library to improve and simplify the programming interfaces (API) of "table_1": in particular, the use of "area_1" now allows to specify both the memory size and the memory alignment for the base and mark fields (the previous "table_1" API only allowed to specify the memory size). - Make the "table_1" more generic (so that it becomes simpler to use the table to store other objects than states) by using the functionnalities of the "area_1" library for automatic selection of hash functions, printing functions, etc. This removes odd dependencies of the "table_1" with respect to the notion of states. - Solve an issue that occurred when the base field and the mark field had different memory alignments; the mark field would be improperly aligned, possibly resulting in run-time errors (segmentation faults) unless the programmer took explicit provision to avoid this problem; from now on, the "table_1" library will insert appropriate padding bytes before and after the mark field, so that base and mark fields are always aligned properly. Strictly speaking, these changes are not upward compatible with the previous versions of the "table_1" library. We introduced these changes nevertheless since we believed that they were required for a long-term future. However, we took great care to ensure backward compatibility as much as possible, although we cannot guarantee this in all cases. Users facing problems with this migration should contact the [email protected] mailing-list. All the changes concern the CAESAR_CREATE_TABLE_1() function, which has 10 parameters. Specifically, the changes concern the 2nd, 3rd, 7th, 8th, 9th, and 10th parameters. * Changes for the 2nd parameter (CAESAR_BASE_SIZE) From now on, the parameter CAESAR_BASE_SIZE is declared of type CAESAR_TYPE_AREA_1 instead of CAESAR_TYPE_NATURAL. In most cases, this change should be upward compatible. However, we strongly advise users of the "table_1" library to examine every call to CAESAR_CREATE_TABLE_1() and to update the actual values supplied for the CAESAR_BASE_SIZE parameter: instead of a mere natural number, the actual value should be formed using the appropriate primitives provided by the "area_1" library. These primitives allow to specify memory alignment constraints for the base field and to make special cases of base fields (states, labels, strings, etc.) explicit. * Changes for the 3rd parameter (CAESAR_MARK_SIZE) From now on, the parameter CAESAR_MARK_SIZE is declared of type CAESAR_TYPE_AREA_1 instead of CAESAR_TYPE_NATURAL. In most cases, this change should be upward compatible. However, we strongly advise users of the "table_1" library to examine every call to CAESAR_CREATE_TABLE_1() and to update the actual values supplied for the CAESAR_MARK_SIZE parameter: instead of a mere natural number, the actual value should be formed using the appropriate primitives provided by the "area_1" library. These primitives allow to specify memory alignment constraints for the mark field and to make special cases of mark fields (states, labels, strings, etc.) explicit. * Changes for the 7th parameter (CAESAR_COMPARE) A new type CAESAR_TYPE_COMPARE_FUNCTION_TABLE_1 was added to "caesar_table_1.h". This new type is used to declare the 7th parameter of CAESAR_CREATE_TABLE_1(), which is now declared as CAESAR_TYPE_COMPARE_FUNCTION_TABLE_1 CAESAR_COMPARE; instead of CAESAR_TYPE_BOOLEAN (*CAESAR_COMPARE)(CAESAR_TYPE_POINTER, CAESAR_TYPE_POINTER) Both forms are equivalent from a type-checking point of view. Additionally, the semantics of CAESAR_CREATE_TABLE_1() was modified in the case where CAESAR_COMPARE is NULL. Formerly, in such case, a NULL value of CAESAR_COMPARE was replaced by CAESAR_COMPARE_STATE() provided that the memory size of the base field was equal to CAESAR_SIZE_STATE(), otherwise a run-time error would occur. From now on, a NULL value of CAESAR_COMPARE() is replaced by a default function determined by the CAESAR_USE_COMPARE_FUNCTION_AREA_1() of the "area_1" library. The explanations regarding the CAESAR_COMPARE parameter in the "table_1" manual page have been simplified accordingly. * Changes for the 8th parameter (CAESAR_HASH) The 8th parameter of CAESAR_CREATE_TABLE_1() is now declared as CAESAR_TYPE_HASH_FUNCTION CAESAR_HASH; where the type CAESAR_TYPE_HASH_FUNCTION is defined as typedef CAESAR_TYPE_NATURAL (*CAESAR_TYPE_HASH_FUNCTION) (CAESAR_TYPE_POINTER, CAESAR_TYPE_NATURAL); instead of CAESAR_TYPE_NATURAL (*CAESAR_HASH) (CAESAR_TYPE_POINTER, CAESAR_TYPE_NATURAL, CAESAR_TYPE_NATURAL); Both forms are *not* equivalent from a type-checking point of view, since from now on, CAESAR_HASH() has only 2 parameters whereas it had 3 parameters previously. This change was needed to give a uniform profile to hash functions throughout all OPEN/CAESAR APIs. Therefore, from now on, one should no longer use for the CAESAR_HASH parameter certain functions of the "hash" library, such as CAESAR_0_HASH(), CAESAR_1_HASH(), etc. However, the new version of the "table_1" library tries to provide some (limited) upward compatibility by detecting when certain functions with 3 parameters are used, in which case the missing parameter is supplied automatically. However, relying on this undocumented feature is not recommended, as it could disappear from further versions of CADP. Additionally, the semantics of CAESAR_CREATE_TABLE_1() was modified in the case where CAESAR_HASH is NULL. Formerly, in such case, a NULL value of CAESAR_HASH was replaced by CAESAR_HASH_STATE() provided that the memory size of the base field was equal to CAESAR_SIZE_STATE(), otherwise a run-time error would occur. From now on, a NULL value of CAESAR_HASH() is replaced by a default function determined by the CAESAR_USE_HASH_FUNCTION_AREA_1() of the "area_1" library. The explanations regarding the CAESAR_HASH parameter in the "table_1" manual page have been simplified accordingly. * Changes for the 9th parameter (CAESAR_PRINT) A new type CAESAR_TYPE_PRINT_FUNCTION_TABLE_1 was added to "caesar_table_1.h". This new type is used to declare the 9th parameter of CAESAR_CREATE_TABLE_1(), which is now declared as CAESAR_TYPE_PRINT_FUNCTION_TABLE_1 CAESAR_PRINT; instead of void (*CAESAR_PRINT) (CAESAR_TYPE_FILE, CAESAR_TYPE_POINTER); Both forms are equivalent from a type-checking point of view. Additionally, the semantics of CAESAR_CREATE_TABLE_1() was modified in the case where CAESAR_PRINT is NULL. Formerly, in such case, a NULL value of CAESAR_PRINT was replaced by CAESAR_PRINT_STATE() provided that the memory size of the base field was equal to CAESAR_SIZE_STATE(), otherwise a run-time error would occur. From now on, a NULL value of CAESAR_PRINT() is replaced by a default function determined by the CAESAR_USE_PRINT_FUNCTION_AREA_1() of the "area_1" library; this function will print both the base field and the mark field (if not empty) whereas the mark field was never displayed formerly. The explanations regarding the CAESAR_PRINT parameter in the "table_1" manual page have been simplified accordingly. * Changes for the 10th parameter (CAESAR_OVERFLOW): A new type CAESAR_TYPE_OVERFLOW_FUNCTION_TABLE_1 was added to "caesar_table_1.h". This new type is used to declare the 10th parameter of CAESAR_CREATE_TABLE_1(), which is now declared as CAESAR_TYPE_OVERFLOW_FUNCTION_TABLE_1 CAESAR_OVERFLOW; instead of void (*CAESAR_OVERFLOW) (); Both forms are equivalent from a type-checking point of view. The explanations regarding the CAESAR_OVERFLOW parameter in the "table_1" manual page have been simplified. * Changes for the memory structure of table_1 items: From now on, padding bytes are automatically inserted before and after the mark field, so that base fields and mark fields are always properly aligned with respect to their alignments constraints specified using the 2nd and 3rd parameters of CAESAR_CREATE_TABLE_1(). This changes a fundamental invariant of the "table_1": the base field and mark field are no longer concatenated, meaning that there may be extra bytes between the last byte of the base field and the first byte of the mark field. The CAESAR_RETRIEVE_B_M_TABLE_1() function can be used to access the mark field. Unfortunately, this change is *not* upward compatible, so that user programs using the "table_1" might need to be modified appropriately. * Other changes: The manual page for caesar_table_1 (which is part of the OPEN/CAESAR reference manual in $CADP/doc/*/Garavel-92-a.*) was updated (and simplified) to reflect all these changes. The "upc" command was modified to remind the users that calls to function CAESAR_CREATE_TABLE_1() might have to be adapted. All the CADP tools using the "table_1" library have been updated to integrate these evolutions.
Number: 971 Date: Tue Dec 14 14:10:52 MET 2004 Author: Frederic Lang (INRIA/VASY) Files: com/exp2fc2 Nature: A minor bug in the EXP2FC2 script, which impacted SVL, was fixed.
Number: 972 Date: Wed Dec 15 09:41:06 MET 2004 Report: Tomas Barros (INRIA/OASIS, Sophia Antipolis, France) Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2c Nature: If a label in an LTS of the input composition expression would contain special characters, e.g., '"', '%', '\', etc., the C program generated by exp2c would contain errors. This problem was solved.
Number: 973 Date: Wed Dec 15 11:21:59 MET 2004 Report: Tomas Barros (INRIA/OASIS, Sophia Antipolis, France) Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2c Nature: The EXP.OPEN tool now issues a warning message when the synchronization of a set of LTSs through a respective set of gates (or labels, depending on the semantics of the parallel composition operator considered) cannot ever happen because one of the LTSs does not contain a transition with the appropriate gate (or label).
Number: 974 Date: Wed Dec 15 16:15:30 MET 2004 Authors: Hubert Garavel (INRIA/VASY), Holger Hermanns (Saarland Univ., Germany), Christophe Joubert (INRIA/VASY), Frederic Lang (INRIA/VASY), Radu Mateescu (INRIA/VASY) Files: bin.*/determinator.a, man/*/determinator.* Nature: A new tool named DETERMINATOR was added to the CADP toolbox. This tool provides determinization features for both ordinary LTSs and extended Markovian models containing ordinary, probabilistic and/or stochastic transitions.
Number: 975 Date: Thu Dec 16 11:01:51 MET 2004 Report: Thierry Heuillard (France Telecom R&D) Author: Wendelin Serwe (INRIA/VASY) Files: bin.win32/tgv.a Nature: A bug was fixed in the Windows version of TGV: TGV would stop with a segmentation fault after displaying the two lines: > SP initialisation > - SPEC initialised This problem did not occur on Solaris nor Linux.
Number: 976 Date: Thu Dec 16 11:09:04 MET 2004 Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: bin.*/tgv.a, man/*/tgv.* Nature: Various improvements were brought to the TGV tool: - It was ported to MacOS X. - It now accepts hiding files with ".hid" suffix (in addition to ".hide"). - It now accepts renaming files with ".ren" suffix (in addition to ".rename"). - The manual page was corrected in several places. Especially, it now makes clear that one should use "-bcg -unparse" options instead of "-aldebaran -unparse".
Number: 977 Date: Fri Dec 17 16:41:38 MET 2004 Authors: Nicolas Descoubes, Hubert Garavel, Frederic Lang, Bruno Ondet, and Gordon Pace (INRIA/VASY) Files: bin.*/projector.a, man/*/projector.* Nature: The PROJECTOR 1.0 tool was replaced by a new version 2.0, which introduces the following changes and improvements: - PROJECTOR 2.0 is more efficient than PROJECTOR 1.0. Speedups of up to 4 times have been observed. - Synchronisation sets can now be specified using regular expressions, and using complementation ("all but" operator). - New options ("-gate", "-total", and "-partial") allow to specify whether the regular expressions contained in synchronisation sets must be interpreted as gates, full labels, or label substrings. - The new "-monitor" option allows to open a graphical window to get real-time monitoring information, such as number of states and transitions generated, labels encountered, etc. - PROJECTOR 2.0 is fully compatible with PROJECTOR 1.0, except that interfaces files must now be given in the BCG format, while PROJECTOR 1.0 required the ".aut" format. However, when SVL is used, it will perform such file format conversions automatically whenever necessary.
Number: 978 Date: Fri Dec 17 17:01:54 MET 2004 Report: Frederic Tronel (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard, man/*/svl.* Nature: SVL was enhanced to support the new PROJECTOR 2.0 tool: - Following the recent evolution of the PROJECTOR tool, the SVL language was extended to allow abstractions with synchronization on the complement of a set ("sync all but"), and synchronization on labels and gates specified as regular expressions ("gate", "total", and "partial" abstractions). - A new notation was introduced to enable the description of label lists and renaming rule lists using shell variables in hide, rename, abstraction, parallel composition, and LOTOS process invocations.
Number: 979 Date: Fri Dec 17 17:13:40 MET 2004 Author: Radu Mateescu (INRIA/VASY) Files: bin.*/libcaesar.a, incl/caesar_solve_1.h, man/*/caesar_solve_1.*, doc/*/Garavel-92-a.* Nature: The OPEN/CAESAR environment was enhanced with a new generic library (named CAESAR_SOLVE_1) for solving boolean equation systems on the fly. A manual page for this library (23 pages) was written.
Number: 980 Date: Fri Dec 17 18:39:55 MET 2004 Author: Radu Mateescu (INRIA/VASY) Files: bin.*/bisimulator.a, man/*/bisimulator.* Nature: A new tool named BISIMULATOR was added to the CADP toolbox. This tool allows to check equivalence and preorder relations between LTSs on the fly.
Number: 981 Date: Mon Dec 20 15:24:47 MET 2004 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard, man/man.*/svl.* Nature: SVL was extended to support the new BISIMULATOR tool. From now on, BISIMULATOR becomes the default tool (in place of ALDEBARAN) for comparing LTSs and behaviours. As BISIMULATOR works on-the-fly, the default comparison method is now "fly" instead of "std".
Number: 982 Date: Tue Dec 21 09:47:41 MET 2004 Authors: Hubert Garavel (INRIA/VASY), Holger Hermanns (Saarland Univ., Germany), and Christophe Joubert (INRIA/VASY) Files: demos/demo_30 Nature: A new demo (Markovian analysis of the Hubble space telescope) was added to the CADP toolbox.
Number: 983 Date: Tue Dec 21 12:09:38 MET 2004 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard Nature: SVL now generates extended ".exp" files containing generalized hiding and renaming operators (thus allowing "hide all but" constructs and different matching semantics to be used inside ".exp" files). Such ".exp" files are accepted by EXP.OPEN 2.0. This modification has the advantage to avoid the generation of intermediate BCG graphs. At the same time, on-the-fly reduction of ".exp" files using ALDEBARAN has been removed from SVL, for the following reasons: - ALDEBARAN cannot process these extended ".exp" files; - On-the-fly reduction is generally slower than standard reduction; - On-the-fly reduction does not bring the usual advantages of on-the-fly verification, namely the ability to provide verification verdicts without exploring the entire state space. As a consequence, the four shell variables predefined in SVL DEFAULT_REDUCTION_TOOL_LTS, DEFAULT_REDUCTION_TOOL_EXP, DEFAULT_REDUCTION_METHOD_LTS, and DEFAULT_REDUCTION_METHOD_EXP have been replaced by the variables DEFAULT_REDUCTION_TOOL and DEFAULT_REDUCTION_METHOD. Warning messages are issued at reduction time if one of the former variables is defined. Equivalence and preorder checking of ".exp" files using the ALDEBARAN tool is still supported in SVL. However, such ".exp" files should neither contain hiding nor renaming operators (because ALDEBARAN does not handle them properly). Otherwise, an error message is emitted. In general, the (more efficient) BISIMULATOR tool should be preferred, as it accepts any LTS given using the OPEN/CAESAR "graph module" API, including enhanced ".exp" files.
Number: 984 Date: Tue Jan 4 18:26:15 MET 2005 Authors: Christophe Joubert and Radu Mateescu (INRIA/VASY) Files: doc/*/Joubert-Mateescu-04.*, doc/*/Joubert-Mateescu-05.*, doc/=READ_ME.txt, doc/biblio.bib Nature: Two new papers were added in the "doc" directory of the CADP toolbox: - The paper "Joubert-Mateescu-04" describes a method for distributed on-the-fly equivalence checking. - The paper "Joubert-Mateescu-05" presents a distributed on-the-fly resolution algorithm for single block boolean equation systems.
Number: 985 Date: Thu Jan 6 14:04:27 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2c Nature: A table overflow error was corrected in EXP.OPEN 2.0, which sometimes caused erroneous results when the graph module explored by EXP.OPEN 2.0 contained less labels than one of the input graphs.
Number: 986 Date: Thu Jan 6 15:19:43 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel Nature: A bug was corrected in SVL, which caused erroneous expansion of the "leaf reduction" macro operator.
Number: 987 Date: Mon Jan 10 17:00:53 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, svl/src/standard, man/*/svl.* Nature: Three minor bugs were corrected in SVL: - Cleaning after macro operator expansion no longer removes "generation" operators when their operand is a "rename" expression (such a "rename" operator may now be part of a ".exp" file). - The temporary BCG file containing the LTS generated from a ".exp" file is now given a new file name (previously, its name was the same as the ".exp" file by replacing the ".exp" suffix with a ".bcg" suffix). This new scheme avoids clashes between file names. - The SVL_SYNC_TO_HIDE() function defined in "svl/src/standard" was corrected to take into account the fact that ".sync" files may now be begin with either the "Sync" or "sync" keywords.
Number: 988 Date: Mon Jan 10 17:18:54 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2c Nature: A minor bug was corrected in EXP.OPEN, which caused a warning message when compiling the C code generated by EXP2C.
Number: 989 Date: Mon Jan 17 16:50:11 MET 2005 Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: com/tst Nature: The "tst" shell-script was modified not to emit a spurious warning "*** No license exists for host ..." when the current host name appears to be suffixed by its domain name (for instance, "cadp.inria.fr" instead of "cadp").
Number: 990 Date: Mon Jan 24 16:53:29 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard, man/*/svl.* Nature: The SVL tool has been enhanced with a new "refined abstraction" operator. This operator allows to restrict a behaviour within a parallel composition expression (among other operators) with respect to constraints induced by synchronization with some of its concurrent neighbours. Compared to normal "abstraction", the user does not need to provide a synchronization set, as this set will be built automatically using EXP.OPEN. As a consequence, the synchronization constraints computed in such a way are more precise.
Number: 991 Date: Thu Jan 27 16:33:43 MET 2005 Authors: Damien Bergamini, Adrian Curic, Nicolas Descoubes, Hubert Garavel, Christophe Joubert, Radu Mateescu, Irina Smarandache-Sturm, and Gilles Stragier (INRIA/VASY) Files: bin.*/distributor.a, bin.*/bcg_merge, src/monitor/READ_ME, src/monitor/distributor.tcl, man/*/distributor.*, man/*/bcg_merge.* Nature: Two new tools named DISTRIBUTOR and BCG_MERGE have been added to the CADP toolbox. These tool allow distributed state space generation on a network of workstations or a cluster of PCs.
Number: 992 Date: Tue Feb 1 15:11:24 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard, man/*/svl.* Nature: The semantics of SVL meta-operations, in particular "leaf" and "node reduction", was improved. Expansion of these operations now distributes "reduction" across "generation", "abstraction", and "refined abstraction". The cleaning function was also modified accordingly. Additionally, "node reduction" now distributes hiding operators as far as possible towards the leaves, in order to allow better reductions of intermediate state spaces.
Number: 993 Date: Tue Feb 1 16:16:55 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2c, com/exp.open, man/*/exp.open.* Nature: A new "-labels" option was added to EXP.OPEN. Given as input a network of communicating automata (".exp" file), this option displays on the standard output all labels that might occur in the LTS generated from this network, assuming that all the synchronizations are possible.
Number: 994 Date: Wed Feb 2 08:39:35 MET 2005 Author: Radu Mateescu (INRIA/VASY) Files: bin.*/evaluator.*, man/*/evaluator.* Nature: An enhanced version of the EVALUATOR on-the-fly model checker was installed in the CADP toolbox. The new version 3.5 of EVALUATOR supersedes the former version 3.0 still remaining fully compatible with it. The main differences between both versions are the following: - EVALUATOR 3.5 uses the resolution algorithms provided by the CAESAR_SOLVE library (see item #979 above) whereas EVALUATOR 3.0 contained an ad hoc resolution engine. This improves the modularity by clearly separating the translation of the verification problem (done in EVALUATOR) from the resolution (done in CAESAR_SOLVE). - The analysis of regular alternation-free mu-calculus formulas is enhanced with the detection of formulas that lead to disjunctive or conjunctive boolean equation systems. These systems can be solved more efficiently using algorithm A4 of CAESAR_SOLVE, which does not keep in memory the dependencies between boolean variables. Since most of the formulas encountered in practice are of this type, this enhancement results in important memory reductions (proportional to the number of transitions in the graph under verification) w.r.t. EVALUATOR 3.0. - Another optimization, performed on the system of modal equations used as intermediate representation by EVALUATOR, consists in expanding on-line the propositional variables that occur only once in the right-hand side of an equation. On most practical examples, this reduces by a factor of 3 the number of variables and induces the same reduction on the time and memory necessary for resolution. - The generation of diagnostics (examples and counterexamples) is improved in order to reflect more accurately the structure of the temporal formulas. In the diagnostics produced by EVALUATOR 3.0, each state was associated to a state of the graph being checked, which caused the duplication of transitions in the diagnostic. For instance, when evaluating the formula ``<A.A.A> true'' on the graph consisting of a single A-loop ``S --A--> S'', the diagnostic produced by EVALUATOR 3.0 was the graph with a single state S and three A-loop transitions attached to S. To the contrary, the diagnostics produced by EVALUATOR 3.5 is the sequence ``S1 --A--> S2 --A--> S3 --A--> S4'', which is a better explanation that the formula requires to traverse three successive A-transitions. - Several new command-line options were added to EVALUATOR 3.5 to benefit from all features of CAESAR_SOLVE, namely: use of the breadth-first search based algorithm A2 to produce small-depth diagnostics ("-bfs" option, with its dual "-dfs" option), use of the memory-efficient algorithm A3 to check properties on acyclic graphs ("-acyclic"), and possibility to display the underlying boolean equation system in a textual form ("-bes"). Also, the manual page for EVALUATOR was updated.
Number: 995 Date: Thu Feb 10 11:13:57 MET 2005 Report: Tomas Barros (INRIA/OASIS, Sophia-Antipolis, France) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: bin.iX86/* Nature: The CADP binaries have been ported to Linux Fedora Core 3 (they no longer make a segmentation fault error when being run on this recent version of Linux).
Number: 996 Date: Fri Feb 11 16:44:38 MET 2005 Author: Frederic Lang and Radu Mateescu (INRIA/VASY) Files: bin.*/bisimulator.a, man/*/bisimulator.*, bin.*/svl_kernel, src/svl/standard, man/*/svl.* Nature: The BISIMULATOR tool was enhanced with comparisons modulo two new equivalence relations and their associated preorders: trace equivalence (option "-trace") and weak trace equivalence (option "-weaktrace"), which considers only visible transitions. The generation of counterexamples for these equivalences and their preorders was also implemented. These equivalence relations have been also added to the SVL language. They are implemented as follows: - Comparisons modulo these equivalences are done by invoking BISIMULATOR with options "-trace" and "-weaktrace". - Reductions modulo these equivalences are done in two steps. First, DETERMINATOR is invoked to eliminate non-determinism (and, for weak trace reduction only, tau-transitions using the "-tauclosure" option). Second, BCG_MIN is used to merge equivalent states modulo strong bisimulation.
Number: 997 Date: Wed Feb 16 14:24:08 MET 2005 Report: Samson Bisaro (Universite Henri Poincare, Nancy, France) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: com/tst Nature: The "tst" shell-script was enhanced to detect whether the GR-security extensions are installed in the Linux kernel and, if so, to emit a warning message (as the CADP tools may face problems in this case). The "tst" shell-script was also enhanced to identify Fedora Core distributions and to display their version number.
Number: 998 Date: Fri Feb 18 11:47:45 MET 2005 Authors: Hubert Garavel (INRIA/VASY), Holger Hermanns (Saarland Univ.), Radu Mateescu (INRIA/VASY), Christophe Joubert (INRIA/VASY), and David Champelovier (INRIA/VASY) Files: demos/demo_31 Nature: A new demo example (SCSI-2 bus arbitration protocol) was added. This demo illustrates major topics, such as formal modelling of hardware protocols, compositional state space generation, model checking of mu-calculus formulas, and performance evaluation combined with functional verification. This demo example is presented in an FME'02 paper by Garavel and Hermanns (see doc/*/Garavel-Hermanns-02.pdf).
Number: 999 Date: Fri Feb 18 12:04:16 MET 2005 Author: Radu Mateescu (INRIA/VASY) Files: demos/demo_34 Nature: A new demo (Computer Integrated Manufacturing architecture) was added to the CADP toolbox.
Number: 1000 Date: Tue Feb 22 17:26:15 MET 2005 Report: Christophe Joubert (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/bcg_info Nature: A bug was fixed in BCG_INFO. Due to a numerical overflow, BCG_INFO could abort with a segmentation fault when invoked on large models with its "-nondeterministic" option, as in: bcg_info -nondeterministic - vasy_6020_19353.bcg where vasy_6020_19353.bcg is an element of the VLTS benchmark suite.
Number: 1001 Date: Wed Feb 23 11:01:23 MET 2005 Authors: Frederic Perret and David Champelovier (INRIA/VASY) Files: bin.*/ocis.a Nature: Many issues have been fixed in the OCIS simulator: - The new version of OCIS correctly displays deadlock states. - The menus of OCIS' main window have been improved. - When EXHIBITOR is running, the "OK" button of the OCIS window from which EXHIBITOR was launched is desactivated, so that two instances of EXHIBITOR cannot be launched at the same time. - The BCG files containing the scenarios stored by OCIS have been made smaller: they no longer contain so-called "unexplored" transitions; this change is upward compatible in the sense that the new version of OCIS can reload the scenarios stored by both the old and new version of OCIS. - The file selection window was improved in several ways: all clicks on the "Save" button are now ignored until a file name is selected; when a scenario save operation fails (i.e., because the current directory or the BCG file is write-protected), the interface now reacts properly; navigation in directories now works correctly when loading and saving scenarios, sequence files, PostScript files, etc.; when saving a PostScript file, a ".ps" suffix is now added automatically if not already present; when saving a sequence tree, a ".seq" suffix is now added automatically if not already present; when quitting, OCIS no longer proposes to store the current scenario if this one is unmodified.
Number: 1002 Date: Thu Feb 24 13:01:12 MET 2005 Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.*/ocis.a Nature: More improvements have been brought to the OCIS simulator: - A bug was fixed: when launching EXHIBITOR from OCIS on a ".seq" file several times, the first launch would execute properly, but the next launches would face an issue: the pathname of the ".seq" file was an absolute one, which prevented to start a new search; from now on, only the basename of this file is displayed, which solves the problem. - OCIS was ported to MacOS X. A bug was fixed in the MacOS X version of OCIS: the communication protocol between C and Tcl would emit error messages of the form "Wrong parameter format". - On MacOS X, the "$CADP/src/com/cadp_x11" script is now invoked automatically, so as to start the X11 environment if not already running.
Number: 1003 Date: Thu Feb 24 16:23:25 MET 2005 Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: bin.*/libcaesar.a, man/*/caesar_hash.*, doc/*/Garavel-92-a.* Nature: The "hash" library of OPEN/CAESAR was enhanced in several ways: - The CAESAR_1_HASH() function was modified so as to return the same results as the s_hash() function of SPIN when given identical input parameters. - The CAESAR_1_HASH() function was corrected so that it no longer reads bytes outside of the memory zone to be hashed. - The CAESAR_2_HASH() function was modified so as to return the same results as the d_hash() function of SPIN when given identical input parameters. - The CAESAR_2_HASH() function was corrected so that it no longer reads bytes outside of the memory zone to be hashed. - The CAESAR_6_HASH() function was entirely rewritten; the previous version could cause a segmentation fault error and could return different results depending on the memory alignment of the memory zone to be hashed. - Three new functions CAESAR_7_HASH(), CAESAR_STATE_7_HASH(), and CAESAR_LABEL_7_HASH() have been added. These functions are inspired from those of Bob Jenkins in SPIN 4.2.2.
Number: 1004 Date: Fri Feb 25 14:10:06 MET 2005 Report: Benjamin Fontan (ENSICA, Toulouse, France) Author: Hubert Garavel (INRIA/VASY) Files: bin.iX86/* Nature: A license problem with Linux laptops was solved. This problem occurred when these laptops were booted on a local area network and then disconnected from the network, or vice-versa.
Number: 1005 Date: Mon Feb 28 19:04:47 MET 2005 Authors: Frederic Lang, Radu Mateescu, and Hubert Garavel (INRIA/VASY) Files: demos/demo_01, demos/demo_02, demos/demo_03, demos/demo_07, demos/demo_08, demos/demo_09, demos/demo_10, demos/demo_11, demos/demo_14, demos/demo_16, demos/demo_17, demos/demo_20, demos/demo_24, demos/demo_25, demos/demo_26, demos/demo_28, demos/demo_29, demos/demo_32, demos/demo_33 Nature: Many CADP demos have been adapted to use the new BISIMULATOR tool rather than ALDEBARAN. This was done by modifying the "=READ_ME.txt" and "demo.svl" files only.
Number: 1006 Date: Thu Mar 3 12:32:49 MET 2005 Authors: Damien Bergamini, Hubert Garavel, and Radu Mateescu (INRIA/VASY) Files: src/eucalyptus Nature: The EUCALYPTUS user-interface was updated so as to reflect the recent evolutions of CADP: - In the "Options" menu, a "Bisimulator" entry was added, which allows to enable the "-stat" option of BISIMULATOR and to choose the name of the Boolean Equation System file produced by BISIMULATOR. - In the "CAESAR and CAESAR.ADT" sub-menu of the "Options" menu, the semantics of "Optimization E7" was modified to take into account the changes in the "-e7" option of CAESAR (see above item #926). - In the contextual menu for ".lotos" and ".LOTOS" files, a "Compare" entry was added, which invokes BISIMULATOR. - In the contextual menu for ".bcg" files, an "Evaluate performance..." entry was added, which invokes the BCG_STEADY and BCG_TRANSIENT tools. - The "Help" menu of EUCALYPTUS was updated with the new tools recently added in CADP. The help page for the obsolete Des2Aut tool was removed.
Number: 1007 Date: Thu Mar 3 16:14:59 MET 2005 Report: Ken Turner (University of Stirling, Scotland, UK) Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar.adt Nature: A bug was fixed in the C code generated by CAESAR.ADT for constant operations: when a constant operation F1 was defined using a non-constructor operation F2, and when the definition of F2 contained an occurrence of some other constant operation F3, a dependence between F1 and F3 would exist. From now on, CAESAR.ADT properly detects the existence of "recursive" constants (e.g., when F1 and F3 are identical) and rejects them with an explicit error message. Also, the C code generated by CAESAR.ADT now properly orders the definitions of constants to avoid using a constant before it is assigned.
Number: 1008 Date: Thu Mar 3 17:28:39 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard, man/*/svl.* Nature: To compute the graph of a parallel composition expression, SVL may now automatically use the partial order reduction features of EXP.OPEN ("-branching" and "-ratebranching" options). The use of partial order reduction depends on the context in which the parallel composition expression occurs: - If the parallel composition expression occurs in the context of a "stochastic branching reduction", then the "-ratebranching" option of EXP.OPEN is used . - If the parallel composition expression occurs either in the interface part of an "abstraction" operator, or in the context of a "reduction" or "comparison" modulo an equivalence relation that is weaker or equal to branching equivalence (i.e., observational, tau*.a, safety, or weak trace), then the "-branching" option of EXP.OPEN is used.
Number: 1009 Date: Mon Mar 14 11:24:40 MET 2005 Author: Hubert Garavel (INRIA/VASY) Files: bin.win32/libm.a, bin.win32/libcaesar.a, incl/bcg_standard.h incl/caesar_system.h, incl/caesar_standard.h, Nature: A new include file named "caesar_system.h" was added, which gathers OS-specific definitions previously contained in file "caesar_standard.h" and "bcg_standard.h", such as system(), popen(), and pclose(). On Windows, such functions are no longer contained in the "bin.win32/libcaesar.a" library (since they are useful to both BCG and OPEN/CAESAR tools) but in the `fake' "bin.win32/libm.a" library. This change should be transparent to most users.
Number: 1010 Date: Mon Mar 14 12:35:39 MET 2005 Authors: David Champelovier, Hubert Garavel, and Frederic Lang (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.adt, bin.*/caesar.indent, exp2c, mcl_expand, svl_kernel, xtl Nature: The CAESAR, CAESAR.ADT, CAESAR.INDENT, EXP2C, MCL_EXPAND, SVL, and XTL compilers have been enhanced so as to support 8-bit characters in source files.
Number: 1011 Date: Fri Mar 18 11:28:59 MET 2005 Authors: Frederic Perret, David Champelovier, Radu Mateescu, and Hubert Garavel (INRIA/VASY) Files: bin.*/ocis.a Nature: The OCIS interactive simulator was improved: from now on, it can re-read a simulation scenario contained in a BCG graph and reply this scenario during the current simulation session. Typically, the BCG graph can be either a simulation scenario previously explored and saved using OCIS, or an execution trace produced by EXHIBITOR or EXECUTOR, or a diagnostic generated by EVALUATOR for a temporal logic property. To do so, OCIS needs to decide whether this BCG graph is a subset or not of the graph being explored during the current OCIS session. This amounts to checking graph inclusion modulo the preorder associated to strong equivalence; if so, a diagnostic is generated, which can be subsequently read and replayed by OCIS as an ordinary simulation scenario. This is done by invoking BISIMULATOR and DETERMINATOR from OCIS automatically.
Number: 1012 Date: Wed Mar 23 11:22:41 MET 2005 Report: Judi Romijn (Technical Univ. of Eindhoven, The Netherlands) Author: David Champelovier (INRIA/VASY) Files: src/monitor/distributor.tcl Nature: A bug was fixed in the real-time monitoring window of the DISTRIBUTOR tool (this window is created by giving the "-monitor" option to DISTRIBUTOR). On large examples, DISTRIBUTOR could emit the following error messages: > bgerror failed to handle background error. > Original error: too many nested evaluations (infinite loop?) > ... <snip> > fatal error on master node (Exit requested by user) > Closing pipe to monitor
Number: 1013 Date: Wed Mar 23 11:55:43 MET 2005 Report: Christophe Joubert (INRIA/VASY) Author: David Champelovier (INRIA/VASY) Files: src/monitor/distributor.tcl Nature: A bug was fixed in the real-time monitoring window of the DISTRIBUTOR tool. When the graph under generation became large, the progression bars in the "Progress" tab of the monitoring window would block after a certain time. This was due to an arithmetic overflow problem, which was solved by replacing integer numbers with floating-point numbers.
Number: 1014 Date: Thu Mar 24 10:36:03 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: com/exp.open, bin.*/exp2c, man/*/exp.open.* Nature: A new "-info" option was added to the EXP.OPEN tool. This option displays information about the LTSs referenced in the input composition expression, using the bcg_info tool.
Number: 1015 Date: Thu Mar 24 10:45:40 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: demos/demo_35, demos/demo_36 Nature: Two new demo examples have been added to the CADP toolbox: - demo_35 features a distributed summation algorithm using the "n among m" synchronization operator proposed by H. Garavel and M. Sighireanu in 1999. - demo_36 features a distributed Erathostenes sieve, which is verified using compositional verification and partial order reduction
Number: 1016 Date: Thu Mar 24 15:09:39 MET 2005 Report: Gregory Batt (INRIA Rhone-Alpes/HELIX), Ludovic Apvrille (ENST, Sophia-Antipolis, France), and Dave Parker (Univ. of Birmingham, UK) Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: src/installator/installator.tcl Nature: A bug was fixed in the INSTALLATOR assistant, which would sometimes freeze when or after performing FTP transfers. In the log file, this bug produced the following error message: > too many nested calls to Tcl_EvalObj (infinite loop?) > (procedure "Trace" line 9) > invoked from within > ... > "DisplayMsg "C: 421 Service not available, closing > control connection." > ...
Number: 1017 Date: Fri Mar 25 16:06:22 MET 2005 Report: Gwen Salaun (INRIA/VASY) Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar Nature: A bug was fixed in optimization U2 of CAESAR. Under some rare circumstances, this optimization could merge two concurrent units into one single sequential unit.
Number: 1018 Date: Fri Mar 25 16:46:15 MET 2005 Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: incl/caesar_table_1.h, bin.*/libcaesar.a man/*/caesar_table_1.* doc/*/Garavel-92-a.* Nature: The "caesar_table_1" library of OPEN/CAESAR was modified so as to increase its maximal capacity from (2^24)-1 elements up to 2^29 elements. This change increases the memory size of a table, but in a reasonable manner. In particular, the constant CAESAR_NULL_INDEX_TABLE_1 was modified: its value changed from 16777215 to -1. Consequently, all OPEN/CAESAR applications using the include file "caesar_table_1.h" should be recompiled to take into account the new value of CAESAR_NULL_INDEX_TABLE_1. This does not preserve binary compatibility, since a ".o" or ".a" file produced with any version of CADP older or equal to CADP 2003-y can not be used with the "libcaesar.a" library provided in a version of CADP equal or newer to CADP 2003-z.
Number: 1019 Date: Tue Mar 29 19:02:17 MEST 2005 Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2c Nature: The implementation of the CAESAR_ITERATE_STATE() function provided by EXP.OPEN was modified, which reduces execution time with a negligible memory overhead. For instance, reachability analysis becomes 1.26 times faster for demo_20 and 1.36 times faster for demo_35.
Number: 1020 Date: Wed Mar 30 09:45:43 MEST 2005 Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: bin.win32/*, src/windows/*, src/com/cadp_cc Nature: The Windows binaries of CADP tools have been modernized. Previously, these binaries were compiled against Microsoft's CRTDLL library, which is now more or less deprecated. From now on, these binaries are compiled against Microsoft's MSVCRT library. Precisely: - The "cadp_cc" shell-script was modified to compile against MSVCRT instead of CRTDLL. - The directory "src/windows" was removed. - The Mingwin libraries used to compile the CADP tools have been upgraded to mingw-runtime-3.7 and w32api-3.2.
Number: 1021 Date: Tue Apr 5 12:51:09 MEST 2005 Report: Frederic Lang (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: com/bcg_edit Nature: A bug was fixed in the BCG_EDIT tool. When the environment variable $PRINTER would contain white spaces (for instance, "Microsoft Office Document Image Writer"), BCG_EDIT would emit an error message "test: too many arguments". A similar problem was fixed for environment variable $CADP_PS_VIEWER.
Number: 1022 Date: Thu Apr 7 12:22:41 MEST 2005 Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: bin.*/caesar.new, doc/*/Garavel-Serwe-04.* Nature: A prototype version of CAESAR (named CAESAR.NEW) was added to the CADP toolbox. This prototype version implements the state space reductions described in a recent paper by Garavel and Serwe (see doc/*/Garavel-Serwe-04.*). Eventually, the features provided by CAESAR.NEW will be integrated into the "official" version of CAESAR. In the meantime, it is possible to use CAESAR.NEW in place of CAESAR by typing the following shell commands: $ cd $CADP/bin.`$CADP/com/arch` $ mv caesar caesar#6.2 $ mv caesar.new caesar
Number: 1023 Date: Wed Apr 13 18:31:25 MEST 2005 Report: Howard Bowman (University of Kent at Canterbury, UK) Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.adt, bin.*/caesar.new Nature: Two minor problems were fixed in the C code generated by CAESAR and CAESAR.ADT. This C code was not fully compliant to ISO C, so that recent C compilers would emit two warnings: > warning: old-style declaration or incorrect type for: main and > warning: implicit function declaration: exit
Number: 1024 Date: Fri Apr 15 10:26:04 MEST 2005 Report: Frederic Lang (INRIA/VASY) Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: src/monitor/distributor.tcl Nature: The real-time monitoring window of DISTRIBUTOR (which is created using the "-monitor" option of DISTRIBUTOR) did not work on Windows. This problem was solved.
Number: 1025 Date: Thu Apr 21 17:29:48 MEST 2005 Report: Husain Aljazzar (University of Konstanz, Germany), Holger Hermanns (Saarland University, Germany) Author: David Champelovier (INRIA/VASY) Files: bin.*/bcg_transient Nature: When invoked with a list of several "time instants" given on the command-line, BCG_TRANSIENT could produce incorrect numerical results (transition throughputs) for one or several instants located at the end of the list. This issue was fixed.
Number: 1026 Date: Tue May 17 18:11:59 MEST 2005 Author: Frederic Lang (INRIA/VASY) Files: demos/demo_35 Nature: The demo_35 (distributed summation algorithm) was entirely rewritten. The network topology is now properly isolated in the data type part (it is defined using a "neighbourhood" function).
Number: 1027 Date: Fri May 20 13:33:39 MEST 2005 Author: Radu Mateescu (INRIA/VASY) Files: doc/*/Bergamini-Descoubes-Joubert-Mateescu-05.* Nature: A new paper on BISIMULATOR was added to the CADP toolbox. In particular, this paper provides a performance comparison between ALDEBARAN and BISIMULATOR.
Number: 1028 Date: Wed Jun 22 11:17:14 MEST 2005 Report: Hubert Garavel (INRIA/VASY) Author: David Champelovier (INRIA/VASY) Files: bin.*/src/com/cadp_cc Nature: Two minor problems were fixed in the Windows version of CADP: CAESAR.ADT and CAESAR would regenerate ".h" and ".c" files systematically, even if the source LOTOS file did not change. This was not time-effective. One problem was caused by the stat() function of Mingwin that does not recognize Cygwin's mount points, such as the fact that "/usr/lib" is mounted on "/lib", and thus would conclude that include files located in "/usr/lib" did not exist, thus forcing recompilation. This problem was solved by modifying the "-datation" option of the "cadp_cc" shell-script. Another problem was that some error messages of the GCC compiler were unduly understood as file dependencies, thus forcing recompilation. Again, the "cadp_cc" shell-script was corrected.
Number: 1029 Date: Fri Jun 24 15:41:32 MEST 2005 Report: Husain Aljazzar (Univ. of Konstanz, Germany) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.new Nature: The C code generated by CAESAR using "-open" option was slightly modified (namely, the declaration of the functional parameter CAESAR_LOOP of function CAESAR_ITERATE_STATE was made more accurate) so that this C code can now be processed by the "protoize" tool.
Number: 1030 Date: Fri Jun 24 16:04:23 MEST 2005 Authors: Frederic Lang and Wendelin Serwe (INRIA/VASY) Files: bin.*/projector.a Nature: The hash function associated to a hash table in PROJECTOR was modified to improve its dispersion. This makes PROJECTOR much faster when many labels are identical up to character permutations.
Number: 1031 Date: Fri Jun 24 16:57:29 MEST 2005 Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard Nature: SVL now minimizes the interfaces given to the PROJECTOR 2.0 tool modulo branching bisimulation before safety equivalence, so as to minimize large interfaces in a faster way.
Number: 1032 Date: Fri Jun 24 19:23:16 MEST 2005 Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.win32/distributor.a Nature: A problem was fixed in the Windows version of DISTRIBUTOR. When the SFU (Microsoft's Services for Unix) software was installed, DISTRIBUTOR would not work properly because the Unix commands contained in C:\SFU would take precedence over the Unix commands provided by Cygwin. This would generate an error message of the form: > This command is not supported. Please type help for further and DISTRIBUTOR would stop.
Number: 1033 Date: Mon Jul 18 16:34:05 MEST 2005 Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: bin.*/caesar.adt, bin.*/caesar, bin.*/caesar.new Nature: From now on, when a ".h" file (resp., a ".f" or a ".t" file) does not start with the special macro-definition #define CAESAR_ADT_EXPERT_H ... (resp. CAESAR_ADT_EXPERT_F or CAESAR_ADT_EXPERT_T), CAESAR and CAESAR.ADT will emit a warning that this macro-definition is missing. In such case, the default CAESAR.ADT version number will be 5.2 instead of 4.1 (which means that one assumes that the ".h", ".f", or ".t" file was written for version 5.2 of CAESAR.ADT rather than for version 4.1, which lasted from 1993).
Number: 1034 Date: Mon Sep 5 16:12:02 MEST 2005 Authors: Frederic Lang and Hubert Garavel (INRIA/VASY) Files: demo_37 Nature: A new demo example was added: the ODP (Open Distributed Processing) trader.
Number: 1035 Date: Tue Sep 6 18:20:19 MEST 2005 Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: src/exec_caesar/main.c, demos/demo_19/main.c, demos/demo_19/driver.c, demos/demo_19/gate_functions.c, demos/demo_19/start Nature: The "main.c" file containing the entry point of EXEC/CAESAR was enhanced. The main() function can now accept an optional argument that, if present, will be the file name to which the transitions will be logged as they are executed. If this argument is absent, no logging will take place. If this parameter is equal to "-", then logging will take place on the standard output. The source files of demo_19 were adapted accordingly. The "main.c" program of demo_19 was removed, as it is now subsumed by the enhanced file "src/exec_caesar/main.c. The "driver.c" program and the "start" shell-script were also simplified. Finally, file "driver.c" was renamed into "gate_functions.c".
Number: 1036 Date: Wed Sep 7 14:37:13 MEST 2005 Authors: Frederic Lang, Gwen Salaun and Wendelin Serwe (INRIA/VASY) Files: doc/*/Lang-05.*, doc/*/Salaun-Serwe-05.*, doc/=READ_ME.txt, doc/biblio.bib Nature: Two new papers were added in the "doc" directory of the CADP toolbox: - The paper "Lang-05" presents the principles and the main functionalities of the EXP.OPEN 2.0 tool. - The paper "Salaun-Serwe-05" discusses translation issues between the hardware process algebra CHP and LOTOS.
Number: 1037 Date: Fri Sep 9 17:56:40 MEST 2005 Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: incl/caesar_kernel.h, demos/demo_19/gate_functions.c Nature: In the standard EXEC/CAESAR include file "caesar_kernel.h", four macro definitions have been added: CAESAR_KERNEL_ASSERT_EOL(), CAESAR_KERNEL_ASSERT_INPUT(), CAESAR_KERNEL_ASSERT_OUTPUT(), CAESAR_KERNEL_ASSERT_TYPE() These macros are useful to check the arguments passed to EXEC/CAESAR gate functions. The "gate_functions.c" file of demo_19 was modified to take advantage of these new macros.
Number: 1038 Date: Fri Sep 9 18:49:56 MEST 2005 Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: demos/demo_38 Nature: A new demo was added: it features the LOTOS description of an asynchronous hardware architecture implementing the DES (Data Encryption Standard). The demo illustrates two key points: the compositional verification of the control part of this architecture, and rapid prototyping by C code generation using EXEC/CAESAR.
Number: 1039 Date: Mon Sep 12 15:17:16 MEST 2005 Author: Radu Mateescu (INRIA/VASY) Files: demos/demo_39 Nature: A new demo was added: it features the LOTOS description of a turntable system for drilling products. The demo illustrates both functional verification (model checking) and performance evaluation.
Number: 1040 Date: Mon Sep 12 19:25:04 MEST 2005 Report: Alexandre Mota (Univ. Federal de Pernambuco, Recife, Brazil) Author: Hubert Garavel (INRIA/VASY) Files: com/tst Nature: On RedHat Linux version 3WS, the "tst" shell-script would emit an incorrect warning: > *** The CADP software might not work correctly on RedHat 3WS > ==> Please upgrade to RedHat 6.0 or higher This erroneous message was removed.
Number: 1041 Date: Mon Sep 19 17:45:37 MEST 2005 Report: Jaco van de Pol (CWI, Amsterdam, The Netherlands) Author: Frederic Lang (INRIA/VASY) Files: com/exp.open, bin.*/exp2c Nature: Two bugs were fixed in Exp.Open: - The -mcrl option was not recognized due to a mistake in the "com/exp.open" command. - While generating a synchronization label file for Projector ("-interface" option), Exp.Open assumed erroneously that the hidden action was systematically written "i". Thus, when written differently, the hidden action was considered by Projector as synchronizable, which led to wrong behaviours.
Number: 1042 Date: Thu Sep 22 11:54:27 MEST 2005 Author: Radu Mateescu (INRIA/VASY) Files: bin.*/libcaesar.a, incl/caesar_solve_1.h, man/*/caesar_solve_1.*, doc/*/Garavel-92-a.* Nature: The interface of the CAESAR_SOLVE library of OPEN/CAESAR was enhanced with several new types and functions, which facilitate the creation of boolean equation systems: - The enumerated type CAESAR_TYPE_BLOCK_SIGN_SOLVE_1 consists of the two constant values CAESAR_MINIMAL_FIXED_POINT_SOLVE_1() and CAESAR_MAXIMAL_FIXED_POINT_SOLVE_1() denoting the sign of an equation block (minimal or maximal fixed point). - The enumerated type CAESAR_TYPE_VARIABLE_KIND_SOLVE_1 consists of the two constant values CAESAR_DISJUNCTIVE_VARIABLE_SOLVE_1() and CAESAR_CONJUNCTIVE_VARIABLE_SOLVE_1() denoting the kind of a boolean variable (disjunctive or conjunctive). - The following types CAESAR_TYPE_BLOCK_SIGN_FUNCTION_SOLVE_1 CAESAR_TYPE_VARIABLE_KIND_FUNCTION_SOLVE_1 CAESAR_TYPE_AREA_FUNCTION_SOLVE_1 CAESAR_TYPE_BOOLEAN_FUNCTION_SOLVE_1 CAESAR_TYPE_NATURAL_FUNCTION_SOLVE_1 denote pointers to functions with various profiles, which occur as arguments of the CAESAR_CREATE_SOLVE_1() function.
Number: 1043 Date: Fri Sep 23 16:33:51 MEST 2005 Author: Radu Mateescu (INRIA/VASY) Files: bin.*/libcaesar.a Nature: A bug was corrected in the breadth-first resolution algorithm of the CAESAR_SOLVE library. In some cases, the error caused a loss of information in the diagnostic generated by this algorithm.
Number: 1044 Date: Tue Sep 27 15:12:55 MEST 2005 Author: Radu Mateescu (INRIA/VASY) Files: bin.*/libcaesar.a, man/*/caesar_solve_1.*, doc/*/Garavel-92-a.* Nature: A new on-the-fly resolution algorithm, named A5, was added to the CAESAR_SOLVE boolean resolution library of OPEN/CAESAR. Similarly to algorithm A0 already present in the library, algorithm A5 is based upon a depth-first search of the dependency graph between boolean variables and is able to solve general equation blocks (containing any combinations of disjunctions and conjunctions in the right hand sides of the equations). Algorithm A5 is optimized to perform a faster detection of examples (resp. counterexamples) in maximal (resp. minimal) fixed point equation blocks. This detection is based upon a generalization of Tarjan's algorithm for computing strongly connected components. Algorithm A5 proves to be much faster (between one and two orders of magnitude) than all the other algorithms of CAESAR_SOLVE when it is invoked many times on the same equation block (e.g., for detecting tau-confluent or redundant transitions during the on-the-fly reductions).
Number: 1045 Date: Wed Sep 28 12:31:44 MEST 2005 Report: Tomas Barros (INRIA/OASIS, Sophia-Antipolis, France) Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2c, man/*/exp.open.* Nature: Exp.Open now allows to write labels containing special characters, such as double quotes. To this aim, labels may contain escape character sequences such as '"' or '', following the definition of character constants of the ANSI C specification.
Number: 1046 Date: Thu Sep 29 13:30:25 MEST 2005 Report: Tomas Barros (INRIA/OASIS, Sophia-Antipolis, France) Author: Frederic Lang (INRIA/VASY) Files: com/exp.open, bin.*/exp2c, man/*/exp.open.* Nature: When some LTS of an Exp.Open composition expression was in a format other than BCG (i.e., ALDEBARAN, FC2, or SEQ), Exp.Open did translate this LTS into BCG automatically, by calling the bcg_io tool. Doing this, labels were parsed as explained in the bcg_write manual page. This prevented using labels whose syntax does not fulfill the BCG conventions. To palliate this limitation, a new -unparse option was added, which turns label parsing off.
Number: 1047 Date: Fri Oct 7 13:27:11 MEST 2005 Author: Gwen Salaun (INRIA/VASY) Files: doc/*/Chirichiello-Salaun-05.* Nature: A new paper related to the use of CADP for the verification of Web services was added to the CADP toolbox.
Number: 1048 Date: Mon Oct 10 10:18:21 MEST 2005 Report: Radu Mateescu (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: demos/demo_24/demos.svl, demos/demo_31/demo.svl, demos/demo_39/demo.svl Nature: Three SVL scripts called the SVL_RECORD_FOR_CLEAN() macro (defined in "src/svl/standard") using regular expressions as arguments, instead of plain filenames as required. This bug was fixed.
Number: 1049 Date: Mon Oct 10 16:28:25 MEST 2005 Authors: Frederic Lang and Radu Mateescu (INRIA/VASY) Files: src/open_caesar/reductor.c, src/open_caesar/reductor3.c, bin.*/reductor.a, man/*/reductor.* Nature: The new version 4.0 of Reductor was released. The archive file "bin.*/reductor.a" of the CADP toolbox replaces the source file "src/open_caesar/reductor.c", which was archived in a new file named "src/open_caesar/reductor3.c". As before, Reductor 4.0 still allows to eliminate all invisible transitions on-the-fly (-taustar option) by merging the source and target states of every invisible transition. Reductor 4.0 also has the following new features: - In addition to invisible transitions, Reductor 4.0 allows to eliminate also some nondeterministic transitions that are irrelevant as regards safety equivalence (-safety option). - Reductor 4.0 allows to compute the minimal quotient of the graph (-minimal option) modulo either strong bisimulation (-strong option), tau*.a bisimulation (-taustar option), and safety equivalence (-safety option). Reductor 4.0 also allows to display the equivalence classes of the quotient (-class option). As in Bisimulator, state equivalence checking is implemented using the efficient "caesar_solve_1" library (solving Boolean Equation Systems). Moreover, the closure algorithm used to eliminate invisible transitions (tau*.a and safety reductions) is faster than in earlier versions. The Reductor manual page was updated.
Number: 1050 Date: Thu Oct 13 18:05:22 MEST 2005 Authors: Hubert Garavel, Bruno Ondet, and Wendelin Serwe (INRIA/VASY) Files: bin.*/libcaesar.a, man/*/caesar_table_1.*, doc/Garavel-92-a.* Nature: The implementation of the "table_1" module of the OPEN/CAESAR library was enhanced in three ways so as to reduce its memory cost (especially for tables containing a little number of items): - Depending on the size of base fields, the actual value given to the CAESAR_LIMIT_SIZE parameter of CAESAR_CREATE_TABLE_1() (or the default value given to CAESAR_LIMIT_SIZE when the actual value specified by the user is equal to zero) is now decreased automatically if it exceeds the total number of different base fields. - Depending on the (possibly decreased) value given to CAESAR_LIMIT_SIZE, the memory cost of the "table_1" was reduced by representing internal memory cells using a variable number of bytes (1, 2, 3 or 4 bytes) instead of a fixed number (4 bytes) as done previously. - Depending on the (possibly decreased) value given to CAESAR_LIMIT_SIZE, the actual value given to the CAESAR_HASH_SIZE parameter of CAESAR_CREATE_TABLE_1() (or the default value given to CAESAR_HASH_SIZE when the actual value specified by the user is equal to zero) is now decreased automatically if it exceeds CAESAR_LIMIT_SIZE, i.e., the maximal number of items that can be stored in the table. The "caesar_table_1" manual page was updated accordingly.
Number: 1051 Date: Wed Oct 19 17:19:55 MEST 2005 Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: ./bin.*/caesar, ./bin.*/caesar.adt, ./bin.*/caesar.new, ./com/tst, ./src/open_caesar/simulator.c, ./src/open_caesar/simulator.i, ./src/open_caesar/declarator.c, ./src/open_caesar/executor.c, ./src/open_caesar/generator.c, ./src/open_caesar/predictor.c, ./src/open_caesar/terminator.c, ./src/open_caesar/reductor3.c, ./src/open_caesar/generator2.c, ./src/open_caesar/reductor2.c, ./man/*/caesar_stack_1.*, ./man/*/caesar_standard.*, ./man/*/bcg_write.*, ./man/*/bcg_read.*, ./demos/demo_05/user.c, ./demos/demo_05/=READ_ME.txt, ./demos/demo_12/main.c, ./demos/demo_12/=READ_ME.txt Nature: In order to avoid warnings emitted by recent C compilers, such as Sun C compiler 5.7 (SunStudio 10), various changes have been brought to the CADP source files written in C, as well as to the C code generated by CAESAR, CAESAR.ADT, and CAESAR.NEW. We can mention the following enhancements: - addition of missing #include directives, - addition of missing calls to exit(), and - addition of "int" result type when declaring the main() function.
Number: 1052 Date: Thu Oct 20 10:42:31 MEST 2005 Report: Thomas Arts (Computer Science Lab, Ericsson, Sweden), Clara Benac Earle (University of Kent at Canterbury, UK), Olivier Bonaventure (University of Liege, Belgium), Romaric Charton (LORIA, Nancy), Wan Fokkink (CWI, Amsterdam, The Netherlands), Hubert Garavel (INRIA/VASY), Francois Germeau (University of Liege, Belgium), Jean-Charles Henrion (University of Liege, Belgium), Marc Herbert (INRIA/VASY), Guoping Jia (Verimag, Grenoble), Frederic Lang (INRIA/VASY), Izak van Langevelde (CWI, Amsterdam, The Netherlands), Wayne Liu (University of Waterloo, Ontario, Canada), Stephane Martin (INRIA/VASY), Radu Mateescu (INRIA/VASY), Charles Pecheur (INRIA/VASY), Wendelin Serwe (INRIA/VASY), and Arno Wouters (CWI, Amsterdam, The Netherlands) Authors: Frederic Lang and Hubert Garavel (INRIA/VASY) Files: bin.*/aldebaran, bin.*/aldebaran.old, com/aldebaran Nature: The Aldebaran binary tool (version 6.6) was replaced by the new shell-script "com/aldebaran" (version 7.0), which invokes the tools Bcg_Info, Bcg_Io, Bcg_Labels, Bcg_Min, Bcg_Open, Bisimulator, Determinator, Evaluator, Exp.Open, Exhibitor, Generator, and Reductor. In the same time, the binary files "bin.*/aldebaran" corresponding to version 6.6 were renamed into "bin.*/aldebaran.old". Aldebaran 7.0 may also invoke Aldebaran 6.6, either when the new option -old (which must be the first option on the command line) is set, or to perform minimization modulo observational equivalence and comparison modulo delay equivalence, which are not supported by other CADP tools. Aldebaran 7.0 fixes 24 out of the 25 known bugs of Aldebaran 6.6. In addition, Aldebaran 7.0 relaxes the following limitations of Aldebaran 6.6: - Aldebaran 7.0 accepts as input the full Exp.Open 2.0 language instead of the subset consisting of LOTOS parallel composition and hiding. In particular, the restriction that forbidded hiding operators whose scope does not contain the whole expression is now relaxed. - As regards comparison modulo branching bisimulation, Aldebaran 7.0 does not require anymore that one of the graphs be free of invisible transitions. - Comparisons modulo branching and observational preorders are now supported.
Number: 1053 Date: Fri Oct 28 19:55:44 MEST 2005 Report: Hubert Garavel (INRIA/VASY) Author: Radu Mateescu (INRIA/VASY) Files: bin.*/bisimulator.a, man/*/bisimulator.* Nature: The counterexamples produced by BISIMULATOR when the two LTSs compared are not equivalent were made more readable. Labels of error transitions indicating non equivalent states, which previously were of the following form: "Absent in LTS1: a" and "Absent in LTS2: b" where a (resp. b) is a transition label belonging to the second (resp. the first) LTS given as input to BISIMULATOR, were respectively changed into: "Present in lts2.bcg: a" and "Absent in lts2.bcg: b" where "lts2.bcg" is the name of the BCG file denoting the second LTS given as input to BISIMULATOR.
Number: 1054 Date: Mon Nov 21 16:54:06 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: bin.*/reductor.a, man/*/reductor.* Nature: Two new reduction options preserving branching bisimulation were added in Reductor: the "-tauconfluence" option yields a graph in which tau-confluence has been eliminated; the "-taucompression" option yields a graph in which every cycle of tau-transitions has been merged into a single state.
Number: 1055 Date: Tue Nov 29 16:48:20 MET 2005 Report: Gwen Salaun (INRIA/VASY) Author: Wendelin Serwe (INRIA/VASY) Files: bin.*/caesar.indent Nature: Two bug fixes and two enhancements were brought to the CAESAR.INDENT pretty-printer for LOTOS: - CAESAR.INDENT no longer removes white spaces before or after the keywords "accept", "actualizedby", "any", "par", "renamedby", and "using". For instance, "any Bool" is no longer translated into "anyBool". - From now on, CAESAR.INDENT handles ".lib" files containing "library"..."endlib" directives (i.e., nested include files). Previously, such directives would cause syntax errors to be reported. - From now on, CAESAR.INDENT no longer inserts extra spaces after the ":", "!" and "?" keywords. For instance, G ! 5 ? B : Bool is now formatted as: G !5 ?B:Bool - In type definitions, the formatting of "sortnames" clauses, "opnnames" clauses, and "S1 for S2" lists was improved.
Number: 1056 Date: Fri Dec 16 15:11:44 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: com/exp.open, bin.*/exp2c, bin.*/libexp_open.a, man/*/exp.open.* Nature: Two new partial order reductions were added to Exp.Open: the "-deadpreserving" option yields a reduced graph that contains the same deadlock states as the entire graph, and the "-weaktrace" option yields a reduced graph that is equivalent to the entire graph modulo weak trace equivalence.
Number: 1057 Date: Fri Dec 16 16:30:39 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: demos/demo_04/EXP.t Nature: The PRINT_EXP (F, E) function defined in the "EXP.t" file of demo_04 was modified to take into account the case where E == NULL. This avoid a segmentation fault when invoking "reductor -class" on Solaris.
Number: 1058 Date: Fri Dec 16 18:12:58 MET 2005 Author: Wendelin Serwe (INRIA/VASY) Files: bin.*/caesar.indent, man/*/caesar.indent.* Nature: Two problems have been fixed in the CAESAR.INDENT tool: - When pretty-printing a ".lib" file, a missing "n" is now added at the end of file; - The unsecure mktemp() function is no longer invoked; instead the "secure" mkstemp() is now invoked (except on Windows, where this function does not exist in the Mingwin32 API).
Number: 1059 Date: Mon Dec 19 14:21:19 MET 2005 Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: incl/caesar_kernel.h Nature: A collection of logging macro-definitions was added to the EXEC/CAESAR's interface file "caesar_kernel.h".
Number: 1060 Date: Tue Dec 20 11:48:01 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: com/aldebaran, man/*/aldebaran.* Nature: The diagnostics issued by the new ALDEBARAN shell-script are now stored in file "aldebaran.bcg". This behaviour is coherent with respect to other tools such as BISIMULATOR and EVALUATOR, which issue diagnostics in files "bisimulator.bcg" and "evaluator.bcg", respectively.
Number: 1061 Date: Tue Dec 20 12:56:17 MET 2005 Report: Hubert Garavel (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard Nature: The BCG files containing the diagnostics issued by ALDEBARAN were not removed from the directory when calling SVL with the -clean option. This problem was solved.
Number: 1062 Date: Tue Dec 20 14:14:11 MET 2005 Author: Frederic Lang (INRIA/VASY) Files: demos/demo_10/demo.svl, demos/demo_11/demo.svl, demos/demo_14/demo.svl, demos/demo_37/demo.svl Nature: The diagnostics generated by the ALDEBARAN shell-script for a livelock detection is a graph that contains cycles. In four demo examples, the SVL script stored these diagnostics into ".seq" files, thus causing an error as these diagnostics are not traces. This bug was solved by replacing ".seq" files by ".bcg" files.
Number: 1063 Date: Thu Dec 22 12:11:02 MET 2005 Authors: Frederic Lang and Radu Mateescu (INRIA/VASY) Files: bin.*/reductor.a, man/*/reductor.* Nature: A new "-divergence" option, to be used with "-taucompression", was added to REDUCTOR. Instead of full tau-compression, which removes every strongly connected component of tau-transitions, the new "-divergence" option allows to keep a self-looping tau-transition in place of every strongly connected component of tau-transitions, thus preserving the livelocks of the original, entire graph.
Number: 1064 Date: Thu Dec 22 16:37:23 MET 2005 Report: Hubert Garavel (INRIA/VASY) Author: Radu Mateescu (INRIA/VASY) Files: bin.*/bisimulator.a Nature: A bug was fixed in BISIMULATOR's diagnostic generation for branching equivalence. In a few cases, some transitions of the diagnostic were labelled by invisible actions instead of the visible actions occurring in the LTSs being compared.
Number: 1065 Date: Wed Jan 4 11:14:46 MET 2006 Report: David Champelovier (INRIA/VASY) Author: Radu Mateescu (INRIA/VASY) Files: bin.*/bisimulator.a Nature: Another bug was fixed in BISIMULATOR's diagnostic generation for branching equivalence. Because of the bug, BISIMULATOR would in some cases abort with a core dump when writing the BCG file containing the diagnostic.
Number: 1066 Date: Fri Jan 6 18:29:04 MET 2006 Author: Radu Mateescu (INRIA/VASY) Files: bin.*/bisimulator.a Nature: The comparison modulo branching and observational equivalences in BISIMULATOR was improved. The encoding of branching equivalence in terms of boolean equation systems was enhanced in order to reduce the number of tau-closures (transitive reflexive closures over tau- transitions) computed when one of the states being compared does not have outgoing tau-transitions. The new encoding allows to identify (on the fly) the cases where branching equivalence becomes identical to tau*.a equivalence, and to simplify the equations accordingly. We observed that this can reduce the number of boolean variables by up to 40% and the number of boolean operators by up to 60%. The encoding of observational equivalence was improved in the case where the explicit LTS (represented as a BCG file) is deterministic and does not have invisible transitions. In this case, observational equivalence becomes identical (modulo the presence of deadlock states) to tau*.a equivalence. This allows to simplify the equations and to reduce the number of boolean variables and operators by one order of magnitude.
Number: 1067 Date: Mon Jan 9 11:48:22 MET 2006 Author: David Champelovier (INRIA/VASY) Files: ./INSTALLATION_MACOS, ./com/installator, ./src/com/install_uncompress Nature: We ported INSTALLATOR to MacOS X 10.4 "Tiger": modifications were made in order to avoid a problem with the "uncompress" command in MacOS X 10.4. Also, the installation directives given in file INSTALLATION_MACOS were updated.
Number: 1068 Date: Mon Jan 9 15:07:21 MET 2006 Report: Mohammad Torabi Dashti (CWI, Amsterdam, The Netherlands) Author: Radu Mateescu (INRIA/VASY) Files: man/*/evaluator.* Nature: In the manual page for EVALUATOR, a syntactic error was corrected in an example given to illustrate action predicates involving Unix regular expressions.
Number: 1069 Date: Wed Jan 11 09:51:24 MET 2006 Authors: Hubert Garavel and Radu Mateescu (INRIA/VASY) Files: doc/*/Mateescu-05.*, doc/*/Garavel-Mateescu-Bergamini-06.* Nature: Two new papers were added to CADP, one about state space reductions for weak equivalences, and another one about the DISTRIBUTOR and BCG_MERGE tools.
Number: 1070 Date: Thu Jan 26 11:42:57 MET 2006 Report: Wendelin Serwe (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2c Nature: A table overflow error was corrected in EXP.OPEN 2.0, which sometimes caused a segmentation fault when parallel operators had synchronization sets containing gates or labels that did not occur in any of the parallel behaviours.
Number: 1071 Date: Wed Feb 1 15:04:17 MET 2006 Author: Radu Mateescu (INRIA/VASY) Files: bin.*/bisimulator.a, man/*/bisimulator.l Nature: A new option "-tauconfluence" was added to BISIMULATOR. This option, which can be used in conjunction with branching and observational equivalences, reduces the implicit LTS (represented as an OPEN/CAESAR program) on-the-fly by applying tau-confluence, a form of partial order reduction preserving branching equivalence. In some cases, this option improves the speed and memory consumption significantly.
Number: 1072 Date: Thu Feb 2 13:32:10 MET 2006 Report: Nicolas Descoubes (INRIA/VASY) Author: Radu Mateescu (INRIA/VASY) Files: bin.*/xtl Nature: A bug was fixed in the XTL model checker, which caused it to loop forever in certain cases and on some versions of Linux and Windows operating systems. The error was apparently in the Gcc compiler, some versions of which behave incorrectly when they are invoked with the "-O2" option. Replacing the "-O2" by "-O3" option solved the problem.
Number: 1073 Date: Thu Feb 16 19:16:51 MET 2006 Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: demo_19/*, demo_38/gate_functions.c Nature: The C files containing the EXEC/CAESAR's gate functions for demo_19 and demo_38 have been enhanced to make use of the logging macro-definitions recently added to "caesar_kernel.h" (see item #1059 above). Also, various issues have been fixed in demo_19.
Number: 1074 Date: Fri Feb 17 19:13:52 MET 2006 Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.new Nature: A problem was fixed in the C code generated by CAESAR with "-exec" option (i.e., using the EXEC/CAESAR framework). The visible gate "delta" expressing the termination of a LOTOS program (i.e., the "exit" operator in LOTOS) was translated into a C function named exit(), which caused a confusion with the predefined C function having the same name. From now on, the "delta" gate will be translated into a C gate function named CAESAR_EXIT() instead of exit().
Number: 1075 Date: Tue Feb 21 10:13:43 MET 2006 Report: Patrice Moreaux (Universite de Savoie, France) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: src/com/cadp_postscript Nature: The BCG_DRAW and EUCALYPTUS tools have been enhanced to use automatically, on Solaris and Linux, an alternative PostScript viewer ("gv", "ggv", or "kghostview") when the "ghostview" PostScript viewer "ghostview" is missing.
Number: 1076 Date: Tue Feb 21 12:56:19 MET 2006 Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: src/com/cadp_cc Nature: The "cadp_cc" shell-script was enhanced to handle properly, on Solaris, the case where the Sun C compiler is installed elsewhere than in its standard location /opt/SUNWspro/bin/cc.
Number: 1077 Date: Tue Feb 21 17:34:28 MET 2006 Authors: David Champelovier, Hubert Garavel, and Frederic Lang (INRIA/ VASY) Files: bin.*/caesar, bin.*/caesar.adt, bin.*/caesar.new, bin.*/exp2c, bin.*/libBCG.a, bin.*/bcg_lib, demos/demo_12/main.c, incl/X_NATURAL.h, incl/bcg_predefined_declarations.h, src/open_caesar/simulator.i Nature: Many changes have been brought to CADP in order to support the Intel C/C++ compiler "icc" version 9.0. These changes concerned existing C files as well as C code generated by tools such as CAESAR, CAESAR.ADT, CAESAR.NEW, EXP2C, and BCG_LIB. They aimed at avoiding warnings emitted by "icc", such as: - warning #108: implicitly-signed bit field of length 1 - warning #180: argument is incompatible with formal parameter - warning #592: variable "bcg1_return" is used before its value is set - warning #1011: missing return statement at end of non-void function "CAESAR_INFORMATION_LABEL" - warning #1011: missing return statement at end of non-void function "CAESAR_COMPARE_LABEL" - warning #1011: missing return statement at end of non-void function "CAESAR_ADT_ITR_NEXT_FUNCTION_xxx" - warning #1011: missing return statement at end of non-void function "EXPOPEN_SELECT_STATE" - warning #1011: missing return statement at end of non-void function "Bcg1_GET_VALUE"
Number: 1078 Date: Thu Feb 23 13:39:51 MET 2006 Report: Hubert Garavel and Jerome Fereyre (INRIA/VASY) Author: Radu Mateescu (INRIA/VASY) Files: bin.*/libcaesar.a, incl/caesar_solve_1.h, bin.*/bisimulator.a, bin.*/evaluator.a, man/*/caesar_solve_1.*, doc/*/Garavel-92-a.* Nature: The functions CAESAR_READ_SOLVE_1() and CAESAR_WRITE_SOLVE_1() belonging to the CAESAR_SOLVE_1 library were improved as follows. - For each function, the parameter: CAESAR_PATHNAME of type CAESAR_TYPE_STRING previously denoting the pathname of a ".bes" file was replaced by a parameter: CAESAR_FILE of type CAESAR_TYPE_FILE denoting a pointer to an already open file. Consequently, CAESAR_READ_SOLVE_1() and CAESAR_WRITE_SOLVE_1() no longer invoke fopen() and fclose() internally; this should be done outside. - Two new parameters were added to CAESAR_READ_SOLVE_1(): CAESAR_BLOCK_UNIQUE_RESOLUTION of type CAESAR_TYPE_BOOLEAN_FUNCTION_SOLVE_1 CAESAR_BLOCK_SOLVE_MODE of type CAESAR_TYPE_NATURAL_FUNCTION_SOLVE_1 These parameters are pointers to functions returning, for each index of an equation block in the system, a boolean value indicating whether that block will be solved one or several times, and the resolution mode used for that block, respectively. If the actual values of these parameters are different from NULL, they will be given to the corresponding parameters in the call to CAESAR_CREATE_SOLVE_1() performed by CAESAR_READ_SOLVE_1(), which creates the boolean equation system read from the file. If these parameters are set to NULL, the corresponding parameters of CAESAR_CREATE_SOLVE_1() are determined by the contents of the input file. These two parameters allow to do last minute changes of the resolution of the boolean equation system contained in the input file. - One new parameter was added to CAESAR_WRITE_SOLVE_1(): CAESAR_DIAGNOSTIC of type CAESAR_TYPE_BOOLEAN If this parameter is set to CAESAR_FALSE, the portion of the boolean equation system written into the output file will contain all equations defining the variables upon which the variable CAESAR_V depends. Otherwise, the output file will contain only the equations defining the variables contained in the diagnostic of the CAESAR_V variable. As these changes are NOT backward-compatible with former versions of the CAESAR_SOLVE_1 library, user applications invoking CAESAR_READ_SOLVE_1() and/or CAESAR_WRITE_SOLVE_1() should be updated accordingly.
Number: 1079 Date: Fri Feb 24 12:12:28 MET 2006 Report: David Champelovier (INRIA/VASY) Author: Radu Mateescu (INRIA/VASY) Files: bin.*/xtl Nature: A bug was fixed in the XTL tool, which caused a core dump in the particular situation when the input BCG file becomes unreadable between the moment at which XTL was launched and the moment the C code generated by the tool is executed.
Number: 1080 Date: Thu Mar 2 14:29:51 MET 2006 Report: Frederic Lang (INRIA/VASY) Author: Radu Mateescu (INRIA/VASY) Files: bin.*/libcaesar.a, bin.*/reductor.a Nature: A bug was fixed in the CAESAR_SOLVE library, which caused a segmentation fault when invoking the REDUCTOR tool with the "-taucompression -divergence" options.
Number: 1081 Date: Fri Mar 3 17:32:17 MET 2006 Report: Gwen Salaun (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: bin.*/exp2c Nature: A bug was fixed, which caused EXP.OPEN 2.0 to abort with a segmentation fault while generating the C code corresponding to a composition expression containing the "label par" operator.
Number: 1082 Date: Mon Mar 6 19:37:52 MET 2006 Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard, man/*/svl.* Nature: The SVL language and compiler were extended to integrate several recent functionalities of CADP: - Comparison using BISIMULATOR may now use one of the "dfs" or "bfs" methods; this gives access to the "-dfs" and "-bfs" options of BISIMULATOR for selecting depth-first search or breadth-first search algorithms. - Temporal logic formula verification (i.e., the "verify" operator in SVL) may now use the "dfs", "bfs", or "acyclic" methods; this triggers the "-dfs", "-bfs", and "-acyclic" options of EVALUATOR, thus allowing to choose among a depth- first search algorithm, a breadth-first search algorithm, or an algorithm dedicated to acyclic graphs.
Number: 1083 Date: Fri Mar 10 08:45:50 MET 2006 Authors: Frederic Lang and Hubert Garavel (INRIA/VASY) Files: bin.*/determinator.a, bin.*/reductor.a, man/*/determinator.l, man/*/reductor.l, com/aldebaran, man/*/aldebaran.*, demo_31/demo.svl, demo_39/demo.svl Nature: A new version 5.0 of Reductor was released, together with a new version of Determinator. The new version of Reductor includes several functionalities previously available in Determinator. The main changes wrt version 4.0 of Reductor are the following: - The "-minimal" option of Reductor was renamed into "-total" (since "-minimal" does not always generate a minimal graph). A new "-partial" option (opposite of "-total") was added for symmetry. - New equivalences have been added to Reductor, namely "-trace" (which implements trace reduction, previously available in Determinator as normal determinization), "-weaktrace" (which implements weak trace reduction, previously available in Determinator as determinization with tau-elimination), and "-taudivergence". - Consequently, the determinization of ordinary Labelled Transition Systems is no longer supported by Determinator. Option "-rate" of Determinator becomes the default option. The options "-normal" and "-tauclosure" of Determinator are now deprecated. The Reductor tool should be used instead: Precisely, one should use ``reductor -trace'' instead of ``determinator -normal'', and ``reductor -weaktrace'' instead of ``determinator -normal -tauclosure''. The Aldebaran 7.0 shell-script was modified; it now invokes Reductor instead of Determinator to perform determinization, trace reduction and weak trace reduction. This change is transparent to the end user. The demos 31 and 39, which invoked ``determinator -rate'' have been simplified to drop the "-rate" option. The Aldebaran, Determinator, and Reductor manual pages have been updated accordingly. The Reductor manual page, in particular, was deeply revised.
Number: 1084 Date: Fri Mar 10 18:38:46 MET 2006 Authors: Frederic Lang and Hubert Garavel (INRIA/VASY) Files: bin.*/svl_kernel, src/svl/standard, man/*/svl.*, demo_07/demo.svl, demo_32/demo.svl Nature: The SVL language and compiler have been modified to reflect the changes brought to Reductor 5.0: - The "reduction" operator of SVL is now equipped with a new clause "with reductor" and three new equivalence names ("tau-confluence", "tau-compression", and "tau-divergence"). - A new "partial" or "total" optional attribute was added to the "reduction", "root reduction", "leaf reduction", "root leaf reduction", and "node reduction" operators. Total reduction has the same meaning as reduction alone. Partial reduction denotes an on-the-fly reduction performed using Reductor, which is generally faster but produces a larger graph than total reduction. - To compute "tau-confluence", "tau-compression", and "tau-divergence", SVL invokes Reductor by default. To compute "trace" and "weak trace" equivalence, SVL now invokes Reductor instead of Determinator. To compute "tau*.a" and "safety" equivalences, SVL now invokes Reductor by default instead of Aldebaran. Demo_07 and demo_32 have been modified so as to remove occurrences of "using fly" in SVL scripts.
Number: 1085 Date: Wed Mar 15 11:35:00 MET 2006 Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: co,/tst, incl/bcg_standard.h, incl/caesar_standard.h, ./INSTALLATION_2 Nature: Many changes have been brought to CADP tools for a smoother support of Intel's ICC 9.0 compiler for Linux and Sun's SunStudio 11 compiler for Solaris: - The "tst" shell-script now recognizes ICC and displays its version number. - The "tst" shell-script also displays the version number of Sun's C compiler and, when necessary, emits a warning about the C compilers available on Solaris. - "tst" now emits a warning message if the version of ICC is l_cc_c_9.0.030 or older, as these versions of ICC contain a bug (issue Q338282 : "sign extension on cast from unsigned short to int when optimized"), detected by VASY, that prevents BCG tools from working properly when using optimization option "-O1" (which is activated by default in ICC). This issue was fixed by Intel in version l_cc_c_9.0.031. - On Linux, "tst" no longer displays any warning message when $CADP_CC is set to a value different from "gcc" (as "icc" is also a valid value). Also, "tst" no longer complains in the particular case where, under Linux, $CADP_CC is set to "icc" and $LD_LIBRARY_PATH contains the path of ICC's dynamic libraries. - "tst" now checks the C compiler contained in $CADP_CC by trying to compile and execute a simple C program. - The INSTALLATION_2 file was enhanced to provide better explanations on how to set $CADP_CC (especially for Solaris users) and how to use Parasoft's Insure software. - The include files "bcg_standard.h" and "caesar_standard.h" have been adapted to work with ICC.
Number: 1086 Date: Thu Mar 16 12:05:45 MET 2006 Report: Wendelin Serwe (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard Nature: If the diagnostic produced by the SVL's "verify" (respectively, "comparison") operator was a trace and if some labels in this trace contained the sub-string "TRUE" or "FALSE", these labels were displayed after the expected verification (respectively, comparison) result, i.e., TRUE or FALSE. This bug was fixed.
Number: 1087 Date: Thu Mar 16 15:32:42 MET 2006 Author: Frederic Lang (INRIA/VASY) Files: bin.*/reductor.a Nature: In some cases, the labelled transition system generated by ``reductor -total -safety'' was not minimal modulo safety equivalence. This bug was fixed.
Number: 1088 Date: Thu Mar 16 16:23:16 MET 2006 Author: Hubert Garavel (INRIA/VASY) Files: bin.*/bcg_min Nature: BCG_MIN now emits a warning message when the "-epsilon" option is used for standard labelled transition systems, i.e., when neither the "-rate" nor "-prob" option is given on the command-line.
Number: 1089 Date: Fri Mar 24 18:14:16 MET 2006 Report: Sven Johr, Holger Hermanns, and Reza Pulungan (Saarland University, Germany) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/bcg_min, bin.*/determinator.a, man/*/bcg_min.*, man/*/determinator.* Nature: A new option "-format" was added to BCG_MIN and DETERMINATOR. This option allows to control the representation of floating- point numbers finely. Previously, the floating-point numbers (rate or probabilities) occurring on the transitions of the Markov chains generated by BCG_MIN and DETERMINATOR were displayed using the "%f" format of sprintf(), i.e. with at most 6 digits after the radix character ".", thus causing a loss of precision (transitions with slightly different values being considered as identical). From now on, the format for floating-point numbers can be specified using the "-format" option. Also, the following (incompatibble) changes have been brought to BCG_MIN and DETERMINATOR: - When no "-format" option is given, the default format used by BCG_MIN and DETERMINATOR is now "%g" instead of "%f". For instance, this allows to display a probability value as 1.23e-9 instead of 0.000000. - For BCG_MIN, when no "-epsilon" option is given, the default precision is now 1e-6 instead of 1e-3. Thus, the behaviour of BCG_MIN is now aligned on that of DETERMINATOR. The manual pages for BCG_MIN and DETERMINATOR have been updated accordingly.
Number: 1090 Date: Fri Mar 24 19:20:19 MET 2006 Author: Radu Mateescu (INRIA/VASY) Files: bin.*/evaluator.a, man/*/evaluator.* Nature: The "-bes" option of EVALUATOR was improved in two ways: - When this option is given on the command-line, EVALUATOR no longer stops after producing the text file containing the boolean equation system; from now on, EVALUATOR continues evaluating the formula and generating the diagnostics. - If the file name specified after "-bes" has the extension ".bes.gz", it will be compressed using gzip(1), which yields substantial file size reductions for large boolean equation systems.
Number: 1091 Date: Mon Mar 27 19:33:42 MEST 2006 Authors: Antonella Chirichiello (Univ. La Sapienza, Roma, Italy), Gwen Salaun, and Wendelin Serwe (INRIA/VASY) Files: demos/demo_40 Nature: A new demo (Web services for stock management and on-line book auction) was added to CADP.
Number: 1092 Date: Tue Mar 28 17:58:42 MEST 2006 Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.new Nature: In the C code generated by CAESAR (and CAESAR.NEW) using the "-exec" option (i.e., the C code produced for the EXEC/CAESAR environment), the name of the gate function generated for the "delta" gate of LOTOS was renamed into "EXIT()" instead of "CAESAR_EXIT()" (see also item #1074 above). This avoids a potential name conflict in case the LOTOS specification with functionality "exit" would also contain a visible gate named "caesar_exit", or "Caesar_Exit", etc.
Number: 1093 Date: Tue Mar 28 18:55:08 MEST 2006 Report: Reza Pulungan (Saarland Univ., Germany) Author: Frederic Lang (INRIA/VASY) Files: bin.*/svl_kernel Nature: A bug was fixed in the SVL tool, which generated incorrect ".exp" files when the gates to synchronize did not start with a letter (e.g., when these gates were numbers).
Number: 1094 Date: Thu Mar 30 16:19:48 MEST 2006 Report: Wendelin Serwe (INRIA/VASY) Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.new Nature: In the C code generated by CAESAR (and CAESAR.NEW) using the "-exec" option, the gate functions were not declared before being used. With recent C compilers, such as SunStudio 11, this caused warnings of the form: warning: implicit declaration of function `G' This issue was solved.
Number: 1095 Date: Thu Mar 30 17:45:25 MEST 2006 Report: Wendelin Serwe (INRIA/VASY) Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.new Nature: In the special case of LOTOS specifications not containing any visible nor tau transition, the C code generated by CAESAR (and CAESAR.NEW) with option "-exec" would not compile properly. This issue was fixed.
Number: 1096 Date: Thu Mar 30 21:48:36 MEST 2006 Report: Reza Pulungan (Saarland Univ., Germany) Author: Hubert Garavel (INRIA/VASY) Files: bin.*/bcg_io, man/*/bcg_io.* Nature: A new option "-format" (similar to the "-format" option added to BCG_MIN and DETERMINATOR recently) was added also to the "-etmcc" option of BCG_IO. This option controls the format under which floating-point numbers (rates or probabilities) are written into the ".tra" file to be read by the ETMCC model checker. This change is potentially incompatible, as floating-point numbers are now displayed, by default, using format "%g" instead of "%f". However, the former behaviour can still be obtained using option ``-format "%f"''.
Number: 1097 Date: Thu Apr 6 19:24:20 MEST 2006 Report: Wendelin Serwe (INRIA/VASY) Authors: Radu Mateescu and David Champelovier (INRIA/VASY) Files: bin.*/ocis.a Nature: Recent versions of OCIS could not execute properly. At link edit time, an error message of the form: Undefined symbol CAESAR_TAU_CLOSURE_REACH_DEADLOCK_EDGE_LIST would be emitted. This issue was fixed.
Number: 1098 Date: Fri Apr 7 17:02:48 MEST 2006 Authors: Hubert Garavel and Radu Mateescu (INRIA/VASY) Files: doc/=READ_ME.txt Nature: The CADP publication list was entirely reorganized. New sections were added to reflect the new software architecture of CADP. Sections related to obsolete or deprecated CADP tools were moved at the end of the list. The corresponding Web page http://vasy.inria.fr/publications/cadp.html was updated accordingly.
Number: 1099 Date: Fri Apr 7 18:04:11 MEST 2006 Report: Frederic Lang (INRIA/VASY) Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: bin.*/libcaesar.a Nature: An issue was fixed in function CAESAR_TEST_REGEXP() defined in the "caesar_regexp.h" library. In some cases, this function would modify the character string pointed by its first argument. On Linux, this could cause a segmentation fault when running EXP.OPEN.
Number: 1100 Date: Mon Apr 10 16:37:41 MEST 2006 Author: Radu Mateescu (INRIA/VASY) Files: bin.*/bisimulator.a, man/*/bisimulator.* Nature: The "-bes" option of BISIMULATOR was improved in two ways (see also item #1090 above): - When this option is given on the command-line, BISIMULATOR no longer stops after producing the text file containing the boolean equation system; from now on, BISIMULATOR continues comparing the graphs and generating the diagnostics. - If the file name specified after "-bes" has the extension ".bes.gz", it will be compressed using gzip(1), which yields substantial file size reductions for large boolean equation systems.
Number: 1101 Date: Tue Apr 18 11:25:22 MEST 2006 Authors: Christophe Joubert and Radu Mateescu (INRIA/VASY) Files: doc/*/Joubert-Mateescu-06.* Nature: A new paper on distributed verification was added in the "doc" directory.
Number: 1102 Date: Wed Apr 26 18:51:34 MEST 2006 Report: Ken Turner (University of Stirling, Scotland, UK) Author: Hubert Garavel (INRIA/VASY) Files: tcl-tk/com/wish, tcl-tk/com/tixwish Nature: On Windows, if the environment variable $CYGWIN was set and if its value contained the substring "tty", all the CADP tools based on Tcl/Tk (e.g., Installator, Eucalyptus) would fail with the following error message: [main] echo ... tty_list::allocate_tty: No tty allocated while executing ... The Wish and Tixwish shell-scripts included in CADP have been modified so as to remove the "tty" substring from $CYGWIN when present.
Number: 1103 Date: Tue May 2 14:18:30 MEST 2006 Report: Gwen Salaun and Wendelin Serwe (INRIA/VASY) Author: Radu Mateescu (INRIA/VASY) Files: bin.*/bisimulator.a Nature: A bug was fixed in the counterexample generation feature of BISIMULATOR. The bug, which occurred only when checking branching equivalence, caused in some cases the insertion in the counterexample of certain transition sequences that were absent from both LTSs being compared.
Number: 1104 Date: Wed May 3 18:57:38 MEST 2006 Report: Wendelin Serwe (INRIA/VASY) Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: incl/X_STRING.h Nature: The two macro-definitions of ADT_CMP_STRING (X1, X2) and ADT_PRINT_STRING (F, X) have been modified to handle the cases where string pointers X, X1, and/or X2 are NULL (this situation can arise when using CAESAR.NEW, which resets dead variables to NULL automatically).
Number: 1105 Date: Thu May 4 10:34:21 MEST 2006 Report: Jacques Abily and Sylvie Lesmanne (Bull) Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.new, man/*/caesar.* Nature: CAESAR and CAESAR.NEW have been enhanced with a "-external" option that generates automatically a prototype file (with suffix ".c.proto") containing skeletons for EXEC/CAESAR's gate functions, i.e., functions associated to all visible gates of the LOTOS specification. These gate functions are incomplete: they must be completed manually (at all places marked "...") with input/output operations required to interface the C code generated from the LOTOS specification with its real, external environment. Option "-external" must be used together with "-exec" option. Three new additional options ("-indent", "-oldstyle", and "-newstyle") have been also added to control the form of the generated C code.
Number: 1106 Date: May 5 10:37:35 MEST 2006 Report: Gwen Salaun and Wendelin Serwe (INRIA/VASY) Authors: David Champelovier, Hubert Garavel, and Frederic Lang (INRIA/ VASY) Files: src/eucalyptus/eucalyptus.tcl, src/com/xeuca_convert Nature: A new version 2.6 of EUCALYPTUS was released, which reflects the changes brought to the command-line CADP tools. As regards the menu bar, the changes are the following: - In the menu "File / Save Preferences", the preferred options for BISIMULATOR, EVALUATOR, and TGV are now stored in file ~/.xeucarc. - Following the replacement of ALDEBARAN by a shell-script (see item #1052 above), the menu "Options / ALDEBARAN" was removed. The "-labels" option of ALDEBARAN can now be set in the "Reduce" window of ALDEBARAN. - The former menu "Options / EVALUATOR and XTL" was splitted into "Options / EVALUATOR" and "Options / XTL". The new menu "Options / EVALUATOR" gives access to the recent options of EVALUATOR, including "-verbose", "-silent", "Boolean Equation System printing...", etc. - A new menu "Options / EXP.OPEN" was added to specify the command-line options of EXP.OPEN 2.0. - The "Help" menu was updated. In particular, the manual page for the (now obsolete) EXP2FC2 tool is no longer proposed in the Help window. As regards the contextual menus attached to files in the left window of EUCALYPTUS, the following changes were made: - In the "Compare..." menu, tau-confluence option was added for the BISIMULATOR tool and the ALDEBARAN tool is no longer proposed (since BISIMULATOR is superior to ALDEBARAN in every respect, except that it does not support the delay equivalence, which is never used in practice). Also, a bug that prevented the comparison between a ".aut" and a ".bcg" file was fixed. - In the "Convert" menu for ".exp" files, a bug was fixed that prevented ".exp" files from being translated into the FC2 format. Also, the translation into the PEP format is now proposed. - A new menu "Evaluate performance..." was added to invoke the BCG_STEADY and BCG_TRANSIENT tools. - In the "Evaluate temporal formula..." menu, the access to options "-bfs", "-dfs" and "-acyclic" of EVALUATOR was made safer. EUCALYPTUS only proposes three possibilities ("-bfs", "-dfs", and "-dfs -acyclic") thus preventing from selecting "-bfs" and "-acyclic" simultaneously. - In the "Find Deadlock..." menu, the ALDEBARAN tool is no longer proposed. - In the "Find Livelock..." menu, the ALDEBARAN tool is no longer proposed. - In the "Properties" menu, the ALDEBARAN tool is no longer used to display properties of ".exp" files; EXP.OPEN is used instead, with its "-info" option. - In the "Reduce..." menu, many changes have been made. On- the-fly reduction using the REDUCTOR tool is now proposed for several types of files, including ".lotos" files. Generally, the ALDEBARAN tool is still proposed, but for observational equivalence only, as other equivalences are more efficiently implemented by BCG_MIN and REDUCTOR. On ".exp" files however, ALDEBARAN is no longer proposed in the "Reduce..." menu, since ALDEBARAN does not implement observational equivalence for ".exp" files. Finally, the new "-format" option of BCG_MIN and the new default value for the "-epsilon" option of BCG_MIN (see above item #1089) are now reflected by EUCALYPTUS.
Number: 1107 Date: Fri May 19 16:39:31 MEST 2006 Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: demos/demo_05/user.c, demos/demo_12/main.c, demos/demo_19/gate_functions.c, incl/caesar_standard.h, src/exec_caesar/main.c, src/open_caesar/declarator.c, src/open_caesar/executor.c, src/open_caesar/generator.c, src/open_caesar/generator2.c, src/open_caesar/predictor.c, src/open_caesar/reductor2.c, src/open_caesar/reductor3.c, src/open_caesar/simulator.c, src/open_caesar/terminator.c Nature: Minor changes have been made to source C code files included in CADP so as to avoid warnings from the "lint" verifier of Sun Studio 11.
Number: 1108 Date: Tue May 23 18:38:20 MEST 2006 Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar.indent Nature: CAESAR.INDENT was modified to produce nicer results when pretty-printing LOTOS specifications, and especially data type definitions: - A newline character is now inserted after keyword "opns" - No newline character is any more inserted after keyword "=>" - Equations occurring after a "forall" clause are shifted to the right by one tabulation - Spaces are no longer inserted around keyword ":" in variable declarations (which have the form X:S or X1, ..., Xn:S)
Number: 1109 Date: Tue Jun 6 16:46:50 MEST 2006 Report: Gert Huisman (Vrije Universiteit Amsterdam, The Netherlands) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: com/rfl Nature: Two new options ("-v" and "-t") have been added to the "rfl" shell-script. These options will be used when sending e-mail messages to warn users about CADP license expiration. They will allow to mention the CADP version number and the date at which the license was requested. These are useful information for users running different versions of CADP on the same machine(s).
Number: 1110 Date: Tue Jun 6 19:57:26 MEST 2006 Author: Hubert Garavel (INRIA/VASY) Files: com/rfl Nature: When installing CADP on certain versions of Windows and Cygwin tools, the prototype license files sent by Installator would contain extra '^M' (r) characters. This was solved by modifying the "rfl" shell-script so as to remove these extra-characters.
Number: 1111 Date: Wed Jun 7 19:21:08 MEST 2006 Report: Christophe Joubert (University of Malaga, Spain) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: ./INSTALLATION_2, ./INSTALLATION_4, ./src/com/installator/installator.tcl Nature: When installing CADP on a FAT or NTFS partition accessed from Linux (using SAMBA), the installation would fail silently as symbolic links are not supported by FAT nor NTFS. Two actions have been taken to address this issue: - This problem is now documented in files INSTALLATION_2 and INSTALLATION_4. - Installator now checks whether it is possible to create symbolic links on the partition chosen by the user to install CADP; if not, an error message is displayed.
Number: 1112 Date: Mon Jun 26 14:25:14 MEST 2006 Report: Nathalie Lepy (INRIA/VASY) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: src/eucalyptus/eucalyptus.tcl, src/com/cadp_web, ./INSTALLATION_2 Nature: The EUCALYPTUS graphical user-interface was enhanced in several ways: - On Unix systems, the default browser (i.e., the default value of the environment variable $NAVIGATOR) is now "firefox" instead of "netscape". - The contents of the "Web" menu have been redesigned. The new "Web" menu gives access to various Web pages providing useful information about CADP: tutorials, manual pages, case studies, FAQ, etc. - Two problems have been fixed in the "Compare..." and "Reduce..." menus for files with ".LOTOS" extension (i.e., files to be pre-processed using APERO). - The "More" menu for files with a ".lotos" or ".LOTOS" extension has been renamed into "More commands". For ".LOTOS", this menu now contains the "Compile abstract data types" entry. For ".lotos" and ".LOTOS" files, two new entries have been added: "Generate external types/ functions" (the corresponding menu entry "Options / Caesar.adt / Generate external prototype files" has been removed) and "Generate gate functions...". - In the XTL-related section of the "Verify temporal properties..." menu, the "Expand only" option has been made active.
Number: 1113 Date: Mon Jun 26 17:28:52 MEST 2006 Author: Hubert Garavel (INRIA/VASY) Files: bin.*/caesar.adt, man/*/caesar.adt.* Nature: From now on, CAESAR.ADT will indent, not only the generated ".h" file as usual, but also the ".f.proto" and ".t.proto" files if the "-external" option is selected. The "-indent" option can be use to prevent these files from being indented.
Number: 1114 Date: Mon Jun 26 19:33:52 MEST 2006 Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.new, man/*/caesar.* Nature: From now on, if the "-external" option is given, CAESAR and CAESAR.NEW will no longer stop if the ".c" file already exists and is up to date: CAESAR will generate both the ".c" and the ".c.proto" files.
Number: 1115 Date: Mon Jun 26 19:43:50 MEST 2006 Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: bin.*/caesar.adt Nature: From now on, if the "-external" option is given, CAESAR.ADT will no longer stop if the ".h" file already exists and is up to date: CAESAR.ADT will generate the ".h", ".f.proto", and ".t.proto" files.
Number: 1116 Date: Wed Jun 28 12:42:03 MEST 2006 Report: Nathalie Lepy (INRIA/VASY) Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: src/eucalyptus/eucalyptus.tcl Nature: In the EUCALYPTUS interface, when evaluating an XTL formula on a BCG file, the "Expand only" option has been made active.
Number: 1117 Date: Mon Jul 3 17:25:10 MEST 2006 Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: com/tst Nature: When running the "tst" shell-script on Linux, if the process stack size was set to unlimited, an error message was issued: tst: line 1055: [: unlimited: integer expression expected This problem was fixed.
Number: 1118 Date: Mon Jul 3 18:24:33 MEST 2006 Report: David Champelovier and Frederic Lang (INRIA/VASY) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: src/com/cadp_tail Nature: Under some circumstances, the "cadp_tail" command would emit an error message: cadp_tail: line 69: 2548 Broken pipe tail "$@ This problem was solved by handling SIGPIPE signals correctly.
Number: 1119 Date: Mon Jul 3 19:12:41 MEST 2006 Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: src/com/cadp_indent Nature: The "cadp_indent" command can now detect automatically the Sun pretty-printer ("indent") even if it is not located in /opt/SUNWspro/bin/indent. It can also use the GNU "indent" if present.
Number: 1120 Date: Tue Jul 4 19:39:32 MEST 2006 Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar.indent Nature: The LOTOS pretty-printer was enhanced, as regards variable declarations. Single variable declarations are formatted without spaces ("X:S"), while multiple variable declarations are formatted with spaces ("X1, ..., Xn : S"), so as to enhance readability.
Number: 1121 Date: Wed Jul 5 17:08:48 MEST 2006 Authors: Wendelin Serwe and Hubert Garavel (INRIA/VASY) Files: bin.*/caesar.bdd Nature: A semantic error was fixed in the "-unit" option of the CAESAR.BDD tool. The algorithm implementing this option was entirely redesigned so as to be compatible with the definition of "concurrent units" given in the [Garavel-Serwe-04] paper.
Number: 1122 Date: Fri Jul 7 11:41:30 MEST 2006 Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: src/com/cadp_indent Nature: The "cadp_indent" command was modified so as to cope with core files on Linux (which are not named "core", but "core.pid", where pid is a process number).
Number: 1123 Date: Fri Jul 7 17:33:12 MEST 2006 Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: bin.*/caesar, bin.*/caesar.old, bin.*/caesar.new, com/rfl, demo_20/=READ_ME.txt, demo_27/=READ_ME.txt, demo_28/=READ_ME.txt Nature: The "caesar" binary (version 6.2 of CAESAR) was renamed into "caesar.old". The "caesar.new" binary (version 7.0 of CAESAR) was renamed into "caesar" and becomes the default. The statistics of demos 20, 27 and 28 have been updated accordingly, so as to reflect the reduction factor obtained using CAESAR 7.0. On all CADP demos, we observed that this divides the number of states generated by an average factor of 45 (with a maximum factor of 4,400) and the numbers of transitions by an average factor of 38 (with a maximum factor of 3,100).
Number: 1124 Date: Mon Jul 10 18:29:19 MEST 2006 Authors: Frederic Lang and Hubert Garavel (INRIA/VASY) Files: com/exp.open, bin.*/exp2c, man/*/exp.open.*, src/eucalyptus/eucalyptus.tcl, src/com/xeuca_convert Nature: A new "-network tina" option was added to the EXP.OPEN 2.0 compiler, so as to convert the input language of EXP.OPEN into the Petri net format of the TINA toolbox. The EUCALYPTUS graphical interface was enhanced to give access to this new functionality in the "Convert..." menu associated to ".exp" files.
Number: 1125 Date: Wed Jul 12 11:37:40 MEST 2006 Report: Nathalie Lepy (INRIA/VASY) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: src/eucalyptus/eucalyptus.tcl Nature: The Tcl/Tk code of EUCALYPTUS was modified to handle properly the situation where a user replaces, in the interface panels, an (integer or floating-point) number with the empty string. From now on, quotes are added around numbers so that empty strings can be detected.
Number: 1126 Date: Wed Jul 19 12:16:21 MEST 2006 Author: Radu Mateescu (INRIA/VASY) Files: doc/*/Mateescu-06-a.* Nature: An overview paper on the CAESAR_SOLVE library for on-the-fly resolution of alternation-free boolean equation systems was added.
Number: 1127 Date: Fri Jul 21 11:32:08 MEST 2006 Report: David Champelovier (INRIA/VASY) Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard Nature: On Windows, some ".sync" files produced by SVL automatically for Projector were incorrect. This bug was fixed.
Number: 1128 Date: Tue Jul 25 11:46:23 MEST 2006 Report: David Champelovier (INRIA/VASY) Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.macOS/projector.a Nature: The Mac OS X version of the PROJECTOR tool was modified so as to get rid of the following error message: > /usr/bin/ld: warning -L: directory name ('$CADP'/bin.macOS) > does not exist
Number: 1129 Date: Tue Jul 25 12:16:11 MEST 2006 Authors: Frederic Lang and Hubert Garavel (INRIA/VASY) Files: bin.*/reductor.a, bin.*/tgv.a, bin.*/xsimulator.a, com/bcg_open, com/caesar.open, com/exp.open, com/seq.open, src/open_caesar/generator.c, src/open_caesar/generator2.c, src/open_caesar/reductor2.c, src/open_caesar/reductor3.c Nature: Many CADP programs and shell-scripts have been modified so as to add double quotes around occurrences of $CADP in $LDFLAGS and $LD_LIBRARY_PATH. This change is yet another step towards the acceptance and proper handling of white spaces in file names.
Number: 1130 Date: Tue Jul 25 12:24:23 MEST 2006 Report: Wendelin Serwe (INRIA/VASY) Author: Radu Mateescu (INRIA/VASY) Files: bin.*/bisimulator.a, man/*/bisimulator.* Nature: A bug was fixed in the counterexample generation for branching equivalence in BISIMULATOR. In some cases, the counterexamples produced contained some transition sequences which were not included in the input LTSs. The new counterexamples are correct w.r.t. this criterion and illustrate properly the cases where the non equivalence of the LTSs is determined by the non equivalence of the source states of some transitions (the cases erroneously handled before were precisely of this type). The description of the -diag option in the manual page of the tool was updated accordingly. (The present bug fix completes a previous, partial bug fix for the same problem - see item #1103 above).
Number: 1131 Date: Fri Sep 8 18:35:41 CEST 2006 Author: Hubert Garavel (INRIA/VASY) Files: com/tst Nature: The "tst" shell-script was enhanced in several ways to be fully compatible with the Solaris 10 operating system: a) When running on Solaris 10, "tst" no longer emits the following warning: > Current operating system is ``SunOS 5.10'' > *** The CADP software is intended for SunOS 5.5 (Solaris > 2.5) or higher > ... b) When "indent" is missing on the current, "tst" explains how to obtain it from Sun Web site: > *** Can't find command ``indent'' > ==> Add directory /opt/SUNWspro/bin to your ``$PATH'' > variable > If this directory does not exist, we recommend that you > install the Sun Studio 11 (or higher) tool suite, which > you can freely download from www.sun.com (follow > Downloads, then Development Tools) c) When the default C compiler (i.e., gcc) is missing, the explanation message was improved.
Number: 1132 Date: Mon Sep 18 14:08:55 MEST 2006 Report: Wendelin Serwe (INRIA/VASY) Author: Radu Mateescu (INRIA/VASY) Files: bin.*/evaluator.a Nature: A minor error was fixed in the way a certain error message was printed by EVALUATOR.
Number: 1133 Date: Tue Sep 19 11:50:01 MEST 2006 Author: Radu Mateescu (INRIA/VASY) Files: bin.*/evaluator.a Nature: A portability issue was fixed in the lexical scanning of .blk files containing modal equation systems given as arguments to the "-block" option of EVALUATOR. On Windows systems, this issue caused an infinite loop of EVALUATOR when parsing .blk files containing comments enclosed between "(*" and "*)".
Number: 1134 Date: Wed Sep 20 15:16:37 MEST 2006 Report: Reza Pulungan (Saarland University, Germany) Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: src/com/install_df Nature: The "install_df" script used by INSTALLATOR was modified so as to avoid a fatal error in INSTALLATOR. This error occurred on Windows only for filesystems (mount points) with long names. After entering the download password, the following error message would be displayed: > syntax error in expression "double(round((double(27%) / > (1024))*10))/10": unexpected close parenthesis > syntax error in expression "double(round((double(27%) / > (1024))*10))/10": unexpected close parenthesis > while executing > "expr double(round((double($TAILLE) / (1024))*10))/10" > (procedure "Get_Free_Space" line 7) > invoked from within > "Get_Free_Space $CADP(TMP_ARCHIVE)" > (procedure "Check_Required_Space" line 28) > ... This problem is solved now.
Number: 1135 Date: Thu Sep 21 11:49:31 MEST 2006 Report: Jan Rakow (OFFIS, Oldenburg, Germany) Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: com/tst Nature: The "tst" shell-script emits a warning when the maximal stack size is not large enough (this can cause problems with those CADP programs making intensive use of recursion). In such case, it emits a warning message: > *** The maximal stack size for executing your programs is > currently limited to 2042 kbytes (see the ``ulimit -s'' > command'') > ... Unfortunately, it appears that command "ulimit -s" is not fully implemented in Cygwin, so that it is not possible to increase the stack size this way. The "tst" warning message was improved to explain this situation.
Number: 1136 Date: Fri Sep 22 12:53:34 MEST 2006 Report: Reza Pulungan (Saarland University, Germany) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: bin.win32/* Nature: The CADP licensing mechanism was enhanced to handle the case where, on Windows, the CADP tools are invoked from a current directory that is not on the same disk as the disk on which CADP is installed, for instance, when the user home directory is on disk D: while CADP is installed on disk C:.
Number: 1137 Date: Fri Sep 22 17:15:32 MEST 2006 Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: src/com/cadp_print, com/tst, INSTALLATION_2 Nature: The "cadp_print" shell-script was modified to fetch "lpr" in "/usr/ucb" on Solaris. This suppresses the need for having "/usr/ucb" present in the $PATH on Solaris, thus simplifying the installation for Solaris users. The INSTALLATION_2 file and the "tst" shell-script have been modified accordingly.
Number: 1138 Date: Fri Sep 22 17:22:09 MEST 2006 Report: Damien Thivolle (INRIA/VASY) Author: Radu Mateescu (INRIA/VASY) Files: src/xtl/actl.mcl Nature: The translation in modal mu-calculus of the inevitability operator AU_A_A() of ACTL was improved. When using EVALUATOR to verify temporal formulas containing this operator, the new translation always leads to gains in time and memory, sometimes up to a factor 8.
Number: 1139 Date: Mon Sep 25 16:43:31 MEST 2006 Report: Claude Jard (ENS Cachan, Bretagne, France) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: bin.macOS/* Nature: The CADP licensing mechanism was enhanced to handle the case of disconnected Mac OS X machines without DHCP (i.e., using fixed IP addresses). Upon disconnection, the names of these machines change, e.g., from "xxx.domain.com" into "xxx.local".
Number: 1140 Date: Thu Oct 5 16:43:49 MEST 2006 Report: Jerome Fereyre (INRIA/VASY) Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: bin.*/cadp_hostinfo Nature: The "cadp_hostinfo" tool was modified to avoid intermittent blockings that occurred on a Linux cluster with biprocessor nodes.
Number: 1141 Date: Mon Oct 9 10:43:07 MEST 2006 Author: David Champelovier (INRIA/VASY) Files: com/bcg_open Nature: Following the change described in item #1129 above, a residual bug (missing backslash) was fixed in the bcg_open script. This bug caused warnings of the form > .../bcg_open: line 1: "/common/Cadp"/com/arch: > No such file or directory
Number: 1142 Date: Tue Oct 10 11:49:02 MEST 2006 Author: Hubert Garavel (INRIA/VASY) Files: src/com/cadp_cc Nature: From now on, CADP will use "cc" (instead of "gcc") as the default C compiler on Solaris systems.
Number: 1143 Date: Tue Oct 10 12:15:24 MEST 2006 Author: Hubert Garavel (INRIA/VASY) Files: INSTALLATION_2, INSTALLATION_WINDOWS Nature: The installation guidelines have been updated and simplified to get rid of obsolete platforms (architectures and operating systems). In particular, compared to the previous stable version CADP 2001, the following platforms are no longer supported: - Sparc stations running Solaris 7 - PC computers running Windows 98 or Windows NT4 - PC computers running Linux with kernel version <= 2.2 and/or glibc version < 2.3 It may happen that recent versions of CADP still work on some of these old architectures, but we do not make statements on this, as we have discontinued testing CADP on these platforms.
Number: 1144 Date: Wed Oct 11 15:38:10 MEST 2006 Author: Radu Mateescu (INRIA/VASY) Files: doc/=READ_ME.txt, doc/biblio.bib, doc/*/Mateescu-Sighireanu-00.*, doc/*/Mateescu-Sighireanu-03.*, doc/*/Mateescu-06-b.* Nature: The paper Mateescu-Sighireanu-00 (24 pages) was replaced with Mateescu-Sighireanu-03 (32 pages), which provides the most complete reference on EVALUATOR 3.0 (please note that, for EVALUATOR 3.5, the reference paper is Mateescu-06-a). Also, a new case-study paper, Mateescu-06-b, was added.
Number: 1145 Date: Wed Oct 11 17:37:23 CEST 2006 Report: Wendelin Serwe (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: src/com/cadp_psbox, src/com/cadp_web Nature: The "cadp_psbox" and "cadp_web" have been modified so as to fetch "gs" and "mozilla" in "/usr/sfw/bin". This is suitable on Solaris 10 systems.
Number: 1146 Date: Wed Oct 11 19:13:27 MEST 2006 Authors: Hubert Garavel, Radu Mateescu, and Wendelin Serwe (INRIA/VASY) Files: doc/pdf/*.pdf Nature: Many PDF files (those corresponding to INRIA research reports) have been reformatted, so as to obtain a well-centered title page.
Number: 1147 Date: Tue Oct 17 11:49:48 MEST 2006 Report: David Champelovier (INRIA/VASY) Author: Hubert Garavel (INRIA/VASY) Files: INSTALLATION_2 Nature: The installation guidelines for Windows have been updated to specify that the CADP software must be installed on the same disk as the Windows operating system itself. Usually, Windows is installed on "C:", so should be CADP (installing CADP on another disk, such as "E:" will not work).
Number: 1148 Date: Tue Oct 17 18:56:42 MEST 2006 Author: Frederic Lang (INRIA/VASY) Files: doc/*/Lang-06.*, doc/=READ_ME.txt, doc/biblio.bib Nature: A new paper on refined interface generation using EXP.OPEN and SVL was added in the "doc" directory of the CADP toolbox.
Number: 1149 Date: Fri Oct 20 14:22:24 MEST 2006 Report: David Champelovier (INRIA/VASY) Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: com/bcg_draw, com/bcg_info, com/bcg_open, com/caesar.open, com/exp.open, com/seq.open, com/svl, com/tst, src/com/cadp_basename, src/com/cadp_edit, src/com/xeuca_convert, src/svl/standard Nature: Under Solaris, SVL did not detect the presence of ".err" error files generated by CAESAR.ADT and CAESAR if the "basename" command found in the $PATH was "/usr/bin/basename" instead of "/usr/ucb/basename" or "/usr/xpg4/basename". This was caused by the fact that "/usr/bin/basename" interprets its second argument as a regular expression, not a string. This bug was fixed. A new shell-script "cadp_basename" was added, which addresses this issue by ensuring that "/usr/bin/basename" will not be invoked on Solaris. Consequently, all the CADP shell scripts have been modified to invoke "cadp_basename" instead of "basename" whenever needed. The "tst" shell-script has been enhanced to emit a warning if neither "/usr/ucb/basename" nor "/usr/xpg4/basename" are available on a Solaris machine.
Number: 1150 Date: Mon Oct 23 10:08:10 MEST 2006 Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: com/tst Nature: The "tst" shell-script was modified to avoid an error on Solaris machines working with a non-English language (e.g., French-speaking versions of Solaris).
Number: 1151 Date: Mon Oct 23 11:41:03 MEST 2006 Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: INSTALLATION_2, com/tst, com/installator Nature: The installation directives have been simplified: it is no longer required to set the $LD_LIBRARY_PATH variable on Solaris machines (Sun's documentation even discourages using $LD_LIBRARY_PATH in production software, as this can result in an overall performance degradation). The checks performed by the "tst" shell-script regarding the setting of $LD_LIBRARY_PATH have been adapted accordingly. The "installator" shell-script was also modified.
Number: 1152 Date: Wed Oct 25 15:12:17 MEST 2006 Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: com/upc, src/com/cadp_cc, src/com/cadp_indent, src/com/cadp_postscript, src/com/cadp_psbox, src/com/cadp_web Nature: A minor bug was fixed in several CADP shell-scripts (variable $PATH was set but not exported).
Number: 1153 Date: Thu Oct 26 14:46:49 MEST 2006 Report: Reza Pulungan (Saarland University, Germany), Jan Friso Groote (Technical Univ. Eindhoven, The Netherlands) Authors: Hubert Garavel and David Champelovier (INRIA/VASY) Files: com/tst Nature: The "tst" shell script was enhanced in four ways: - On Solaris, when $CADP_CC is not set and "/opt/SUNWspro/bin" is not in the $PATH, "tst" no longer emits an error message "cc" not found". - When "$CADP/com" and/or "$CADP/bin.*" are missing from the $PATH, "tst" no longer emits a sequence of warnings of the form: > *** The tool ``bcg_draw'' is not searched in ``$CADP/com'' > but in ``'' instead > You might have two versions of CADP installed > ==> Reorder your ``$PATH'' variable to have ``$CADP/com'' > first and remove all obsolete versions of CADP, if any - On Windows, "tst" now detects the case where "$CADP" contains a Cygwin-specific mount point (such as "/cygdrive/c/...") and emits a warning message, as CADP programs will not understand Cygwin conventions because they are pure Win32 applications. - On Opteron machines running Linux, "tst" now emits a proper warning message if the 32-bit developement library is not installed.
Number: 1154 Date: Thu Oct 26 16:12:22 MEST 2006 Author: Frederic Lang (INRIA/VASY) Files: src/svl/standard Nature: The "standard" shell-script for SVL was modified to avoid a bug that occurs with the Solaris "test" command, which fails when executing the following command: A="(" ; if test "$A" = "("; then echo 0; fi Note that this problem does not occur on Linux.
Number: 1155 Date: Thu Oct 26 18:57:43 MEST 2006 Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: com/rfl Nature: The "rfl" shell-script was modified so as to remove all "r" characters that remained in license files generated on Windows.
Number: 1156 Date: Fri Oct 27 17:06:23 MEST 2006 Report: Tomas Barros (Universidad Diego Portales, Santiago, Chile) Authors: Hubert Garavel, Frederic Lang, and Marie Vidal (INRIA/VASY) Files: bin.*/bcg_labels, man/*/bcg_labels.*, src/eucalyptus/eucalyptus.tcl Nature: Two new options "-parse" and "-unparse" have been added to BCG_LABELS. See the corresponding man page for details. The EUCALYPTUS graphical interface was enhanced so as to give access to these options. Additionally, a mistake was fixed in EUCALYPTUS: when clicking on "Disable parsing of BCG labels", TGV was invoked with "-parse" option instead of "-unparse". This issue was fixed.
Number: 1157 Date: Mon Oct 30 10:17:08 MET 2006 Report: Juan Jose Sanchez Penas (University of Corunha, Spain) Authors: Hubert Garavel and Wendelin Serwe (INRIA/VASY) Files: src/eucalyptus/eucalyptus.tcl Nature: On computer screens with 1024x768 pixels only (such as 14'' laptops screens), the "Reduce" window of EUCALYPTUS (for labelled transitions systems) was too high; thus, the "OK" button located at the window bottom could not be accessed. the contents of this window have been compacted so as to reduce its height.
Number: 1158 Date: Mon Oct 30 11:10:03 MET 2006 Report: Radu Mateescu (INRIA/VASY) Author: Marie Vidal (INRIA/VASY) Files: ./src/bcg_draw/bcg_draw_header.ps Nature: Using BCG_EDIT, there was a problem with arrow heads inclined at 45 degrees exactly: the arrow heads would disappear in a random way, from the screen and/or printed PostScript material. This issue (an incorrect test to decide whether two vertices overlap or not) was solved.
Number: 1159 Date: Mon Oct 30 12:36:34 MET 2006 Report: David Champelovier (INRIA/VASY) Authors: Hubert Garavel and Frederic Lang (INRIA/VASY) Files: com/tst, com/upc, src/com/cadp_echo, src/svl/standard Nature: Under Solaris, the command "/bin/echo" has a different behaviour than "echo" on all other architectures supported by CADP: it does not understand the "-n" option (see items #433 and #435 above) and interprets octal characters such as '015'. But its exists a Solaris command, "/usr/ucb/echo" with the desired behaviour. A new shell-script "cadp_echo" was added, which addresses this issue by ensuring that "/usr/ucb/echo" will used when needed. A few CADP shell scripts have been modified to invoke "cadp_echo" instead of "echo". The "tst" shell-script has been enhanced to emit a warning if "/usr/ucb/echo" is missing from a Solaris machine.
Number: 1160 Date: Thu Nov 16 19:18:00 MET 2006 Report: Yaroslav Usenko (Technical Univ. of Eindhoven, The Netherlands) Author: Hubert Garavel (INRIA/VASY) Files: src/com/cadp_postscript Nature: Support for the Evince PostScript viewer has been added to BCG_DRAW and BCG_EDIT.
Number: 1161 Date: Thu Nov 30 12:30:38 MET 2006 Author: David Champelovier (INRIA/VASY) Files: incl/X_ACTION.h, incl/X_BIT.h, incl/X_BOOLEAN.h Nature: A minor bug was fixed in the include files that implement LOTOS sorts directly in C. The following macro-definitions #define CAESAR_ADT_BITS_ACTION : 1 #define CAESAR_ADT_BITS_BIT : 1 #define CAESAR_ADT_BITS_BOOL : 1 have been replaced with #define CAESAR_ADT_BITS_ADT_ACTION : 1 #define CAESAR_ADT_BITS_ADT_BIT : 1 #define CAESAR_ADT_BITS_ADT_BOOL : 1
Number: 1162 Date: Thu Nov 30 12:41:58 MET 2006 Author: David Champelovier (INRIA/VASY) Files: incl/X_ACTION.h, incl/X_BIT.h, incl/X_BOOLEAN.h Nature: The three following C types implementing external LOTOS sorts: ADT_ACTION, ADT_BIT, and ADT_BOOL have been implemented as "unsigned char" instead of "char".
Number: 1163 Date: Thu Nov 30 12:52:52 MET 2006 Author: David Champelovier (INRIA/VASY) Files: src/com/cadp_which Nature: Due to a bug in the "cadp_which" shell-script (the "macOS" architecture was incorrectly handled as "sun5" whereas it should be handled as "iX86"), the "tst" command would emit strange error messages if Ghostview was not installed: $CADP/src/com/cadp_which: line 1: type: gs: not found
Number: 1164 Date: Thu Nov 30 13:08:31 MET 2006 Report: Christophe Joubert (University of Malaga, Spain) Authors: David Champelovier and Hubert Garavel (INRIA/VASY) Files: src/com/cadp_shell, com/tst Nature: On Linux systems for which the standard shell "/bin/sh" is a link to "dash" instead of "bash" (e.g., Linux Ubuntu Edgy 6.10 or Linux Kubuntu Edgy 6.10), the Installator assistant would freeze on its first screen (the "Next" button not being clickable). This problem was solved. Additionally, the "tst" shell-script was modified to display the system shell (sh, bash, dash, etc.).
Number: 1165 Date: Thu Nov 30 16:20:14 MET 2006 Authors: Radu Mateescu and Gwen Salaun (INRIA/VASY) Files: demos/demo_40/commerce_p2.mcl, demos/demo_40/negociation_p2.mcl Nature: Two mu-calculus formulas for demo_40 (Web service) have been corrected (previously, these formulas always evaluated to true).
Number: 1166 Date: Mon Dec 11 17:40:22 MET 2006 Author: Radu Mateescu (INRIA/VASY) Files: demos/demo_24/co4.lotos Nature: A minor bug (extra ".lib" suffix in a "library" ... "endlib" directive) was fixed in file "co4.lotos".
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