/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:41:52,722 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:41:52,790 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 11:41:52,819 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:41:52,819 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:41:52,820 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:41:52,820 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:41:52,820 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:41:52,821 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:41:52,821 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:41:52,821 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:41:52,821 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:41:52,822 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:41:52,822 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:41:52,822 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:41:52,822 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:41:52,823 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:41:52,823 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:41:52,823 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:41:52,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:41:52,824 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:41:52,827 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:41:52,827 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:41:52,827 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:41:52,830 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:41:52,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:41:52,830 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:41:52,831 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:41:52,831 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:41:52,831 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:41:52,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:41:52,832 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:41:52,832 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:41:53,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:41:53,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:41:53,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:41:53,071 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:41:53,071 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:41:53,072 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i [2023-11-17 11:41:54,131 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:41:54,377 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:41:54,377 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i [2023-11-17 11:41:54,395 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0b592b89/484841696aaf48bebf4bbc0cdacaa726/FLAGd8079b57b [2023-11-17 11:41:54,411 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0b592b89/484841696aaf48bebf4bbc0cdacaa726 [2023-11-17 11:41:54,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:41:54,415 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:41:54,418 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:41:54,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:41:54,422 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:41:54,422 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:41:54" (1/1) ... [2023-11-17 11:41:54,423 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b67f3d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:41:54, skipping insertion in model container [2023-11-17 11:41:54,423 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:41:54" (1/1) ... [2023-11-17 11:41:54,466 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:41:54,776 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i[47038,47051] [2023-11-17 11:41:54,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:41:54,811 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:41:54,846 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i[47038,47051] [2023-11-17 11:41:54,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:41:54,897 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:41:54,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:41:54 WrapperNode [2023-11-17 11:41:54,898 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:41:54,899 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:41:54,899 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:41:54,899 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:41:54,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:41:54" (1/1) ... [2023-11-17 11:41:54,932 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:41:54" (1/1) ... [2023-11-17 11:41:54,965 INFO L138 Inliner]: procedures = 279, calls = 67, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 229 [2023-11-17 11:41:54,966 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:41:54,966 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:41:54,966 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:41:54,967 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:41:54,979 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:41:54" (1/1) ... [2023-11-17 11:41:54,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:41:54" (1/1) ... [2023-11-17 11:41:54,987 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:41:54" (1/1) ... [2023-11-17 11:41:54,987 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:41:54" (1/1) ... [2023-11-17 11:41:54,992 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:41:54" (1/1) ... [2023-11-17 11:41:54,995 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:41:54" (1/1) ... [2023-11-17 11:41:55,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:41:54" (1/1) ... [2023-11-17 11:41:55,014 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:41:54" (1/1) ... [2023-11-17 11:41:55,017 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:41:55,018 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:41:55,018 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:41:55,018 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:41:55,018 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:41:54" (1/1) ... [2023-11-17 11:41:55,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:41:55,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:41:55,082 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 11:41:55,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 11:41:55,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:41:55,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-17 11:41:55,126 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-17 11:41:55,126 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-17 11:41:55,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:41:55,127 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 11:41:55,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:41:55,127 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-17 11:41:55,127 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-17 11:41:55,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:41:55,127 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 11:41:55,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 11:41:55,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:41:55,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-17 11:41:55,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:41:55,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:41:55,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:41:55,129 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 11:41:55,286 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:41:55,287 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:41:55,517 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:41:55,753 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:41:55,753 INFO L307 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-17 11:41:55,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:41:55 BoogieIcfgContainer [2023-11-17 11:41:55,754 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:41:55,756 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:41:55,756 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:41:55,758 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:41:55,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:41:54" (1/3) ... [2023-11-17 11:41:55,758 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd06057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:41:55, skipping insertion in model container [2023-11-17 11:41:55,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:41:54" (2/3) ... [2023-11-17 11:41:55,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd06057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:41:55, skipping insertion in model container [2023-11-17 11:41:55,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:41:55" (3/3) ... [2023-11-17 11:41:55,759 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2023-11-17 11:41:55,773 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:41:55,773 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:41:55,773 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:41:55,845 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-17 11:41:55,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 75 transitions, 170 flow [2023-11-17 11:41:55,934 INFO L124 PetriNetUnfolderBase]: 36/155 cut-off events. [2023-11-17 11:41:55,934 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-17 11:41:55,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 155 events. 36/155 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 562 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 80. Up to 8 conditions per place. [2023-11-17 11:41:55,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 75 transitions, 170 flow [2023-11-17 11:41:55,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 73 transitions, 160 flow [2023-11-17 11:41:55,947 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:41:55,960 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 73 transitions, 160 flow [2023-11-17 11:41:55,968 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 73 transitions, 160 flow [2023-11-17 11:41:55,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 73 transitions, 160 flow [2023-11-17 11:41:55,991 INFO L124 PetriNetUnfolderBase]: 32/149 cut-off events. [2023-11-17 11:41:55,991 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 11:41:55,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 149 events. 32/149 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 530 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 74. Up to 8 conditions per place. [2023-11-17 11:41:55,993 INFO L119 LiptonReduction]: Number of co-enabled transitions 1796 [2023-11-17 11:42:11,131 INFO L134 LiptonReduction]: Checked pairs total: 5999 [2023-11-17 11:42:11,132 INFO L136 LiptonReduction]: Total number of compositions: 37 [2023-11-17 11:42:11,143 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:42:11,147 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@560e5c07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:42:11,148 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 11:42:11,155 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:42:11,155 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2023-11-17 11:42:11,155 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:42:11,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:42:11,156 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-17 11:42:11,156 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:42:11,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:42:11,160 INFO L85 PathProgramCache]: Analyzing trace with hash 225450431, now seen corresponding path program 1 times [2023-11-17 11:42:11,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:42:11,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970297803] [2023-11-17 11:42:11,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:42:11,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:42:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:42:11,296 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-17 11:42:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:42:11,376 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-17 11:42:11,377 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-17 11:42:11,378 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-17 11:42:11,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-17 11:42:11,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 11:42:11,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-17 11:42:11,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:42:11,380 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-17 11:42:11,383 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-17 11:42:11,383 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-17 11:42:11,442 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-17 11:42:11,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 135 transitions, 314 flow [2023-11-17 11:42:11,512 INFO L124 PetriNetUnfolderBase]: 141/507 cut-off events. [2023-11-17 11:42:11,513 INFO L125 PetriNetUnfolderBase]: For 72/86 co-relation queries the response was YES. [2023-11-17 11:42:11,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 596 conditions, 507 events. 141/507 cut-off events. For 72/86 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2910 event pairs, 2 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 338. Up to 32 conditions per place. [2023-11-17 11:42:11,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 135 transitions, 314 flow [2023-11-17 11:42:11,526 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 135 transitions, 314 flow [2023-11-17 11:42:11,526 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:42:11,526 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 135 transitions, 314 flow [2023-11-17 11:42:11,527 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 135 transitions, 314 flow [2023-11-17 11:42:11,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 135 transitions, 314 flow [2023-11-17 11:42:11,576 INFO L124 PetriNetUnfolderBase]: 141/507 cut-off events. [2023-11-17 11:42:11,576 INFO L125 PetriNetUnfolderBase]: For 72/86 co-relation queries the response was YES. [2023-11-17 11:42:11,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 596 conditions, 507 events. 141/507 cut-off events. For 72/86 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2910 event pairs, 2 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 338. Up to 32 conditions per place. [2023-11-17 11:42:11,596 INFO L119 LiptonReduction]: Number of co-enabled transitions 10496 [2023-11-17 11:42:15,340 INFO L134 LiptonReduction]: Checked pairs total: 43106 [2023-11-17 11:42:15,340 INFO L136 LiptonReduction]: Total number of compositions: 73 [2023-11-17 11:42:15,343 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:42:15,343 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@560e5c07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:42:15,343 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 11:42:15,349 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:42:15,349 INFO L124 PetriNetUnfolderBase]: 10/65 cut-off events. [2023-11-17 11:42:15,349 INFO L125 PetriNetUnfolderBase]: For 7/8 co-relation queries the response was YES. [2023-11-17 11:42:15,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:42:15,349 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2023-11-17 11:42:15,350 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:42:15,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:42:15,350 INFO L85 PathProgramCache]: Analyzing trace with hash -478323740, now seen corresponding path program 1 times [2023-11-17 11:42:15,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:42:15,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201623441] [2023-11-17 11:42:15,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:42:15,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:42:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:42:15,407 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-17 11:42:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:42:15,442 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-17 11:42:15,442 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-17 11:42:15,442 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-17 11:42:15,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-17 11:42:15,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-17 11:42:15,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-11-17 11:42:15,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-17 11:42:15,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:42:15,443 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-17 11:42:15,444 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-17 11:42:15,444 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-17 11:42:15,502 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-11-17 11:42:15,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 195 transitions, 462 flow [2023-11-17 11:42:15,734 INFO L124 PetriNetUnfolderBase]: 504/1445 cut-off events. [2023-11-17 11:42:15,734 INFO L125 PetriNetUnfolderBase]: For 419/489 co-relation queries the response was YES. [2023-11-17 11:42:15,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1881 conditions, 1445 events. 504/1445 cut-off events. For 419/489 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 9837 event pairs, 41 based on Foata normal form. 0/1091 useless extension candidates. Maximal degree in co-relation 1052. Up to 192 conditions per place. [2023-11-17 11:42:15,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 195 transitions, 462 flow [2023-11-17 11:42:15,764 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 195 transitions, 462 flow [2023-11-17 11:42:15,764 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:42:15,764 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 195 transitions, 462 flow [2023-11-17 11:42:15,765 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 195 transitions, 462 flow [2023-11-17 11:42:15,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 195 transitions, 462 flow [2023-11-17 11:42:15,968 INFO L124 PetriNetUnfolderBase]: 504/1445 cut-off events. [2023-11-17 11:42:15,968 INFO L125 PetriNetUnfolderBase]: For 419/489 co-relation queries the response was YES. [2023-11-17 11:42:15,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1881 conditions, 1445 events. 504/1445 cut-off events. For 419/489 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 9837 event pairs, 41 based on Foata normal form. 0/1091 useless extension candidates. Maximal degree in co-relation 1052. Up to 192 conditions per place. [2023-11-17 11:42:16,011 INFO L119 LiptonReduction]: Number of co-enabled transitions 25980 [2023-11-17 11:42:20,756 INFO L134 LiptonReduction]: Checked pairs total: 105427 [2023-11-17 11:42:20,758 INFO L136 LiptonReduction]: Total number of compositions: 112 [2023-11-17 11:42:20,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:42:20,766 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@560e5c07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:42:20,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-17 11:42:20,773 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:42:20,773 INFO L124 PetriNetUnfolderBase]: 13/71 cut-off events. [2023-11-17 11:42:20,774 INFO L125 PetriNetUnfolderBase]: For 9/11 co-relation queries the response was YES. [2023-11-17 11:42:20,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:42:20,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:42:20,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:42:20,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:42:20,774 INFO L85 PathProgramCache]: Analyzing trace with hash 356973291, now seen corresponding path program 1 times [2023-11-17 11:42:20,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:42:20,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130236373] [2023-11-17 11:42:20,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:42:20,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:42:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:42:20,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:42:20,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:42:20,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130236373] [2023-11-17 11:42:20,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130236373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:42:20,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:42:20,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:42:20,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553879583] [2023-11-17 11:42:20,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:42:20,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:42:20,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:42:20,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:42:20,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:42:20,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 307 [2023-11-17 11:42:20,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 143 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:42:20,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:42:20,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 307 [2023-11-17 11:42:20,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand