/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/gemcutter/Termination.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/butterfly.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 18:15:56,288 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 18:15:56,349 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 18:15:56,352 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 18:15:56,352 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 18:15:56,352 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 18:15:56,353 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 18:15:56,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 18:15:56,372 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 18:15:56,372 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 18:15:56,373 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 18:15:56,373 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 18:15:56,373 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 18:15:56,373 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 18:15:56,373 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 18:15:56,373 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 18:15:56,373 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 18:15:56,373 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 18:15:56,373 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 18:15:56,373 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 18:15:56,373 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 18:15:56,373 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 18:15:56,373 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 18:15:56,373 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 18:15:56,373 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 18:15:56,374 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 18:15:56,374 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 18:15:56,374 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 18:15:56,374 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 18:15:56,374 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 18:15:56,374 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 18:15:56,374 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 18:15:56,374 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 18:15:56,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 18:15:56,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 18:15:56,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:15:56,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 18:15:56,374 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 18:15:56,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 18:15:56,374 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 18:15:56,374 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 18:15:56,375 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 18:15:56,375 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 18:15:56,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 18:15:56,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 18:15:56,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 18:15:56,624 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-26 18:15:56,624 INFO L274 PluginConnector]: CDTParser initialized [2025-04-26 18:15:56,625 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread/butterfly.i [2025-04-26 18:15:57,886 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/62ac43289/ec149662cfa849ff8a18ba754c91ea34/FLAG9a68e749c [2025-04-26 18:15:58,102 INFO L389 CDTParser]: Found 1 translation units. [2025-04-26 18:15:58,103 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/butterfly.i [2025-04-26 18:15:58,113 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/62ac43289/ec149662cfa849ff8a18ba754c91ea34/FLAG9a68e749c [2025-04-26 18:15:58,887 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/62ac43289/ec149662cfa849ff8a18ba754c91ea34 [2025-04-26 18:15:58,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 18:15:58,890 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-26 18:15:58,891 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-26 18:15:58,891 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-26 18:15:58,894 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-26 18:15:58,895 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.04 06:15:58" (1/1) ... [2025-04-26 18:15:58,895 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51b6b801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 06:15:58, skipping insertion in model container [2025-04-26 18:15:58,895 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.04 06:15:58" (1/1) ... [2025-04-26 18:15:58,925 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-26 18:15:59,137 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/butterfly.i[32515,32528] [2025-04-26 18:15:59,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-26 18:15:59,163 INFO L200 MainTranslator]: Completed pre-run [2025-04-26 18:15:59,214 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/butterfly.i[32515,32528] [2025-04-26 18:15:59,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-26 18:15:59,247 INFO L204 MainTranslator]: Completed translation [2025-04-26 18:15:59,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 06:15:59 WrapperNode [2025-04-26 18:15:59,247 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-26 18:15:59,248 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 18:15:59,248 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 18:15:59,248 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 18:15:59,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 06:15:59" (1/1) ... [2025-04-26 18:15:59,261 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 06:15:59" (1/1) ... [2025-04-26 18:15:59,275 INFO L138 Inliner]: procedures = 171, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2025-04-26 18:15:59,275 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 18:15:59,275 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 18:15:59,276 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 18:15:59,276 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 18:15:59,280 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 06:15:59" (1/1) ... [2025-04-26 18:15:59,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 06:15:59" (1/1) ... [2025-04-26 18:15:59,284 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 06:15:59" (1/1) ... [2025-04-26 18:15:59,284 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 06:15:59" (1/1) ... [2025-04-26 18:15:59,292 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 06:15:59" (1/1) ... [2025-04-26 18:15:59,293 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 06:15:59" (1/1) ... [2025-04-26 18:15:59,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 06:15:59" (1/1) ... [2025-04-26 18:15:59,299 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 06:15:59" (1/1) ... [2025-04-26 18:15:59,300 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 06:15:59" (1/1) ... [2025-04-26 18:15:59,306 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 18:15:59,306 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 18:15:59,306 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 18:15:59,306 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 18:15:59,307 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 06:15:59" (1/1) ... [2025-04-26 18:15:59,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:15:59,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:15:59,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-26 18:15:59,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-26 18:15:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-26 18:15:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure p0 [2025-04-26 18:15:59,351 INFO L138 BoogieDeclarations]: Found implementation of procedure p0 [2025-04-26 18:15:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure p1 [2025-04-26 18:15:59,351 INFO L138 BoogieDeclarations]: Found implementation of procedure p1 [2025-04-26 18:15:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure p2 [2025-04-26 18:15:59,351 INFO L138 BoogieDeclarations]: Found implementation of procedure p2 [2025-04-26 18:15:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure p3 [2025-04-26 18:15:59,351 INFO L138 BoogieDeclarations]: Found implementation of procedure p3 [2025-04-26 18:15:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure p4 [2025-04-26 18:15:59,351 INFO L138 BoogieDeclarations]: Found implementation of procedure p4 [2025-04-26 18:15:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure p5 [2025-04-26 18:15:59,351 INFO L138 BoogieDeclarations]: Found implementation of procedure p5 [2025-04-26 18:15:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-26 18:15:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 18:15:59,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 18:15:59,352 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 18:15:59,465 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 18:15:59,467 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 18:15:59,634 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 18:15:59,634 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 18:15:59,653 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 18:15:59,653 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 18:15:59,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:15:59 BoogieIcfgContainer [2025-04-26 18:15:59,654 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 18:15:59,654 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 18:15:59,654 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 18:15:59,658 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 18:15:59,658 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:15:59,659 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.04 06:15:58" (1/3) ... [2025-04-26 18:15:59,661 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4d6af095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 06:15:59, skipping insertion in model container [2025-04-26 18:15:59,661 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:15:59,661 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 06:15:59" (2/3) ... [2025-04-26 18:15:59,661 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4d6af095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 06:15:59, skipping insertion in model container [2025-04-26 18:15:59,661 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:15:59,661 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:15:59" (3/3) ... [2025-04-26 18:15:59,662 INFO L376 chiAutomizerObserver]: Analyzing ICFG butterfly.i [2025-04-26 18:15:59,757 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-04-26 18:15:59,790 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 18:15:59,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 18:15:59,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:15:59,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-26 18:15:59,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-26 18:15:59,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 142 transitions, 326 flow [2025-04-26 18:15:59,904 INFO L116 PetriNetUnfolderBase]: 7/130 cut-off events. [2025-04-26 18:15:59,909 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-26 18:15:59,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 130 events. 7/130 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 140 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 109. Up to 2 conditions per place. [2025-04-26 18:15:59,915 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 142 transitions, 326 flow [2025-04-26 18:15:59,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 130 transitions, 296 flow [2025-04-26 18:15:59,921 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 142 places, 130 transitions, 296 flow [2025-04-26 18:15:59,922 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 142 places, 130 transitions, 296 flow