/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 04:04:36,660 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 04:04:36,739 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-VariableLbe.epf [2023-08-25 04:04:36,743 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 04:04:36,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 04:04:36,776 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 04:04:36,777 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 04:04:36,782 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 04:04:36,782 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 04:04:36,786 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 04:04:36,786 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 04:04:36,787 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 04:04:36,787 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 04:04:36,788 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 04:04:36,788 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 04:04:36,789 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 04:04:36,789 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 04:04:36,789 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 04:04:36,789 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 04:04:36,790 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 04:04:36,790 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 04:04:36,791 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 04:04:36,791 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 04:04:36,792 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 04:04:36,792 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 04:04:36,792 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 04:04:36,792 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 04:04:36,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 04:04:36,793 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 04:04:36,793 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 04:04:36,794 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 04:04:36,794 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 04:04:36,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 04:04:36,794 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 04:04:36,794 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 04:04:36,795 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 04:04:37,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 04:04:37,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 04:04:37,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 04:04:37,162 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 04:04:37,163 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 04:04:37,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i [2023-08-25 04:04:38,356 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 04:04:38,620 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 04:04:38,621 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i [2023-08-25 04:04:38,652 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dfb03da1/623b3439301f47839be186c0bd7f894a/FLAG830896b48 [2023-08-25 04:04:38,668 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dfb03da1/623b3439301f47839be186c0bd7f894a [2023-08-25 04:04:38,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 04:04:38,674 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 04:04:38,676 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 04:04:38,677 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 04:04:38,679 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 04:04:38,680 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 04:04:38" (1/1) ... [2023-08-25 04:04:38,681 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70714c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:38, skipping insertion in model container [2023-08-25 04:04:38,681 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 04:04:38" (1/1) ... [2023-08-25 04:04:38,731 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 04:04:39,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 04:04:39,079 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 04:04:39,093 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 04:04:39,094 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 04:04:39,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 04:04:39,159 INFO L206 MainTranslator]: Completed translation [2023-08-25 04:04:39,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:39 WrapperNode [2023-08-25 04:04:39,160 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 04:04:39,161 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 04:04:39,162 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 04:04:39,162 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 04:04:39,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:39" (1/1) ... [2023-08-25 04:04:39,181 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:39" (1/1) ... [2023-08-25 04:04:39,201 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 85 [2023-08-25 04:04:39,201 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 04:04:39,202 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 04:04:39,202 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 04:04:39,202 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 04:04:39,209 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:39" (1/1) ... [2023-08-25 04:04:39,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:39" (1/1) ... [2023-08-25 04:04:39,213 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:39" (1/1) ... [2023-08-25 04:04:39,213 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:39" (1/1) ... [2023-08-25 04:04:39,224 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:39" (1/1) ... [2023-08-25 04:04:39,228 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:39" (1/1) ... [2023-08-25 04:04:39,244 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:39" (1/1) ... [2023-08-25 04:04:39,245 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:39" (1/1) ... [2023-08-25 04:04:39,258 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 04:04:39,259 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 04:04:39,260 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 04:04:39,260 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 04:04:39,260 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:39" (1/1) ... [2023-08-25 04:04:39,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 04:04:39,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:04:39,295 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) [2023-08-25 04:04:39,297 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 [2023-08-25 04:04:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 04:04:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 04:04:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 04:04:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 04:04:39,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 04:04:39,324 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-25 04:04:39,324 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-25 04:04:39,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 04:04:39,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 04:04:39,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 04:04:39,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 04:04:39,326 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 04:04:39,432 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 04:04:39,433 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 04:04:39,689 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 04:04:39,695 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 04:04:39,695 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-08-25 04:04:39,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 04:04:39 BoogieIcfgContainer [2023-08-25 04:04:39,697 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 04:04:39,699 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 04:04:39,699 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 04:04:39,701 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 04:04:39,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 04:04:38" (1/3) ... [2023-08-25 04:04:39,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49fbc4b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 04:04:39, skipping insertion in model container [2023-08-25 04:04:39,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:39" (2/3) ... [2023-08-25 04:04:39,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49fbc4b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 04:04:39, skipping insertion in model container [2023-08-25 04:04:39,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 04:04:39" (3/3) ... [2023-08-25 04:04:39,703 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2023-08-25 04:04:39,719 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 04:04:39,719 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-25 04:04:39,719 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 04:04:39,860 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 04:04:39,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 156 transitions, 317 flow [2023-08-25 04:04:39,962 INFO L124 PetriNetUnfolderBase]: 16/209 cut-off events. [2023-08-25 04:04:39,963 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:04:39,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 209 events. 16/209 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 596 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 124. Up to 4 conditions per place. [2023-08-25 04:04:39,972 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 156 transitions, 317 flow [2023-08-25 04:04:39,976 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 156 transitions, 317 flow [2023-08-25 04:04:39,979 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:04:39,986 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 156 transitions, 317 flow [2023-08-25 04:04:39,988 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 156 transitions, 317 flow [2023-08-25 04:04:39,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 156 transitions, 317 flow [2023-08-25 04:04:40,021 INFO L124 PetriNetUnfolderBase]: 16/209 cut-off events. [2023-08-25 04:04:40,022 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:04:40,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 209 events. 16/209 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 596 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 124. Up to 4 conditions per place. [2023-08-25 04:04:40,027 INFO L119 LiptonReduction]: Number of co-enabled transitions 7788 [2023-08-25 04:04:42,980 INFO L134 LiptonReduction]: Checked pairs total: 29608 [2023-08-25 04:04:42,981 INFO L136 LiptonReduction]: Total number of compositions: 107 [2023-08-25 04:04:42,993 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:04:42,998 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=LoopsAndPotentialCycles, 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;@5ba47913, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:04:42,999 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-25 04:04:43,001 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:04:43,001 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-25 04:04:43,001 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:04:43,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:04:43,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-25 04:04:43,002 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-25 04:04:43,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:04:43,006 INFO L85 PathProgramCache]: Analyzing trace with hash 18010, now seen corresponding path program 1 times [2023-08-25 04:04:43,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:04:43,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641375291] [2023-08-25 04:04:43,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:04:43,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:04:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:04:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:04:43,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:04:43,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641375291] [2023-08-25 04:04:43,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641375291] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:04:43,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:04:43,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 04:04:43,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935673153] [2023-08-25 04:04:43,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:04:43,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 04:04:43,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:04:43,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 04:04:43,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 04:04:43,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 263 [2023-08-25 04:04:43,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 71 transitions, 147 flow. Second operand has 2 states, 2 states have (on average 144.0) internal successors, (288), 2 states have internal predecessors, (288), 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) [2023-08-25 04:04:43,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:04:43,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 263 [2023-08-25 04:04:43,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:04:43,275 INFO L124 PetriNetUnfolderBase]: 132/560 cut-off events. [2023-08-25 04:04:43,276 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:04:43,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 560 events. 132/560 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2927 event pairs, 132 based on Foata normal form. 12/521 useless extension candidates. Maximal degree in co-relation 825. Up to 300 conditions per place. [2023-08-25 04:04:43,280 INFO L140 encePairwiseOnDemand]: 253/263 looper letters, 25 selfloop transitions, 0 changer transitions 0/61 dead transitions. [2023-08-25 04:04:43,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 61 transitions, 177 flow [2023-08-25 04:04:43,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 04:04:43,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 04:04:43,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 321 transitions. [2023-08-25 04:04:43,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6102661596958175 [2023-08-25 04:04:43,293 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 321 transitions. [2023-08-25 04:04:43,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 321 transitions. [2023-08-25 04:04:43,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:04:43,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 321 transitions. [2023-08-25 04:04:43,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 160.5) internal successors, (321), 2 states have internal predecessors, (321), 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) [2023-08-25 04:04:43,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 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) [2023-08-25 04:04:43,303 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 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) [2023-08-25 04:04:43,304 INFO L175 Difference]: Start difference. First operand has 66 places, 71 transitions, 147 flow. Second operand 2 states and 321 transitions. [2023-08-25 04:04:43,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 61 transitions, 177 flow [2023-08-25 04:04:43,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 61 transitions, 177 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:04:43,308 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 127 flow [2023-08-25 04:04:43,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=127, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2023-08-25 04:04:43,313 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2023-08-25 04:04:43,313 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 127 flow [2023-08-25 04:04:43,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 144.0) internal successors, (288), 2 states have internal predecessors, (288), 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) [2023-08-25 04:04:43,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:04:43,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-25 04:04:43,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 04:04:43,314 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-25 04:04:43,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:04:43,315 INFO L85 PathProgramCache]: Analyzing trace with hash 558106, now seen corresponding path program 1 times [2023-08-25 04:04:43,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:04:43,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224498315] [2023-08-25 04:04:43,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:04:43,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:04:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:04:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:04:43,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:04:43,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224498315] [2023-08-25 04:04:43,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224498315] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:04:43,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:04:43,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:04:43,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254430301] [2023-08-25 04:04:43,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:04:43,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:04:43,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:04:43,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:04:43,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:04:43,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 263 [2023-08-25 04:04:43,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 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) [2023-08-25 04:04:43,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:04:43,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 263 [2023-08-25 04:04:43,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:04:43,500 INFO L124 PetriNetUnfolderBase]: 132/571 cut-off events. [2023-08-25 04:04:43,501 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:04:43,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 571 events. 132/571 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2971 event pairs, 110 based on Foata normal form. 0/520 useless extension candidates. Maximal degree in co-relation 865. Up to 276 conditions per place. [2023-08-25 04:04:43,508 INFO L140 encePairwiseOnDemand]: 260/263 looper letters, 36 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-25 04:04:43,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 229 flow [2023-08-25 04:04:43,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:04:43,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:04:43,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-08-25 04:04:43,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5627376425855514 [2023-08-25 04:04:43,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-08-25 04:04:43,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-08-25 04:04:43,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:04:43,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-08-25 04:04:43,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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) [2023-08-25 04:04:43,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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) [2023-08-25 04:04:43,520 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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) [2023-08-25 04:04:43,520 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 127 flow. Second operand 3 states and 444 transitions. [2023-08-25 04:04:43,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 229 flow [2023-08-25 04:04:43,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 74 transitions, 229 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:04:43,522 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 135 flow [2023-08-25 04:04:43,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2023-08-25 04:04:43,525 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2023-08-25 04:04:43,525 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 135 flow [2023-08-25 04:04:43,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 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) [2023-08-25 04:04:43,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:04:43,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-25 04:04:43,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 04:04:43,527 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-25 04:04:43,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:04:43,530 INFO L85 PathProgramCache]: Analyzing trace with hash -549755770, now seen corresponding path program 1 times [2023-08-25 04:04:43,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:04:43,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144250268] [2023-08-25 04:04:43,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:04:43,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:04:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:04:43,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 04:04:43,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:04:43,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144250268] [2023-08-25 04:04:43,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144250268] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:04:43,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:04:43,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:04:43,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846095460] [2023-08-25 04:04:43,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:04:43,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:04:43,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:04:43,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:04:43,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:04:43,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 263 [2023-08-25 04:04:43,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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) [2023-08-25 04:04:43,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:04:43,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 263 [2023-08-25 04:04:43,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:04:43,710 INFO L124 PetriNetUnfolderBase]: 176/641 cut-off events. [2023-08-25 04:04:43,710 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-25 04:04:43,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1086 conditions, 641 events. 176/641 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3251 event pairs, 116 based on Foata normal form. 0/613 useless extension candidates. Maximal degree in co-relation 1080. Up to 367 conditions per place. [2023-08-25 04:04:43,713 INFO L140 encePairwiseOnDemand]: 258/263 looper letters, 33 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-08-25 04:04:43,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 64 transitions, 216 flow [2023-08-25 04:04:43,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:04:43,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:04:43,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-08-25 04:04:43,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576679340937896 [2023-08-25 04:04:43,714 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-08-25 04:04:43,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-08-25 04:04:43,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:04:43,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-08-25 04:04:43,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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) [2023-08-25 04:04:43,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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) [2023-08-25 04:04:43,718 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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) [2023-08-25 04:04:43,718 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 135 flow. Second operand 3 states and 440 transitions. [2023-08-25 04:04:43,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 64 transitions, 216 flow [2023-08-25 04:04:43,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 04:04:43,720 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 141 flow [2023-08-25 04:04:43,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2023-08-25 04:04:43,721 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 0 predicate places. [2023-08-25 04:04:43,721 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 141 flow [2023-08-25 04:04:43,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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) [2023-08-25 04:04:43,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:04:43,722 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-25 04:04:43,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 04:04:43,722 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-25 04:04:43,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:04:43,722 INFO L85 PathProgramCache]: Analyzing trace with hash -549755668, now seen corresponding path program 1 times [2023-08-25 04:04:43,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:04:43,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639087432] [2023-08-25 04:04:43,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:04:43,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:04:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:04:43,743 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 04:04:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:04:43,770 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 04:04:43,771 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 04:04:43,774 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-08-25 04:04:43,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2023-08-25 04:04:43,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2023-08-25 04:04:43,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2023-08-25 04:04:43,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2023-08-25 04:04:43,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (12 of 18 remaining) [2023-08-25 04:04:43,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2023-08-25 04:04:43,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2023-08-25 04:04:43,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2023-08-25 04:04:43,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2023-08-25 04:04:43,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2023-08-25 04:04:43,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2023-08-25 04:04:43,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2023-08-25 04:04:43,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2023-08-25 04:04:43,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2023-08-25 04:04:43,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2023-08-25 04:04:43,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2023-08-25 04:04:43,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2023-08-25 04:04:43,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 04:04:43,778 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-25 04:04:43,780 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 04:04:43,781 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 04:04:43,808 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 04:04:43,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 223 transitions, 458 flow [2023-08-25 04:04:43,848 INFO L124 PetriNetUnfolderBase]: 27/334 cut-off events. [2023-08-25 04:04:43,848 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 04:04:43,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 334 events. 27/334 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1281 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 210. Up to 6 conditions per place. [2023-08-25 04:04:43,851 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 223 transitions, 458 flow [2023-08-25 04:04:43,854 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 223 transitions, 458 flow [2023-08-25 04:04:43,854 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:04:43,854 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 223 transitions, 458 flow [2023-08-25 04:04:43,854 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 223 transitions, 458 flow [2023-08-25 04:04:43,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 223 transitions, 458 flow [2023-08-25 04:04:43,888 INFO L124 PetriNetUnfolderBase]: 27/334 cut-off events. [2023-08-25 04:04:43,888 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 04:04:43,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 334 events. 27/334 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1281 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 210. Up to 6 conditions per place. [2023-08-25 04:04:43,903 INFO L119 LiptonReduction]: Number of co-enabled transitions 24420 [2023-08-25 04:04:46,919 INFO L134 LiptonReduction]: Checked pairs total: 126832 [2023-08-25 04:04:46,919 INFO L136 LiptonReduction]: Total number of compositions: 132 [2023-08-25 04:04:46,921 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:04:46,922 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=LoopsAndPotentialCycles, 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;@5ba47913, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:04:46,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-25 04:04:46,923 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:04:46,923 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-25 04:04:46,924 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:04:46,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:04:46,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-25 04:04:46,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 04:04:46,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:04:46,924 INFO L85 PathProgramCache]: Analyzing trace with hash 31513, now seen corresponding path program 1 times [2023-08-25 04:04:46,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:04:46,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471932078] [2023-08-25 04:04:46,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:04:46,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:04:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:04:46,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:04:46,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:04:46,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471932078] [2023-08-25 04:04:46,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471932078] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:04:46,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:04:46,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 04:04:46,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731853959] [2023-08-25 04:04:46,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:04:46,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 04:04:46,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:04:46,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 04:04:46,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 04:04:46,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 355 [2023-08-25 04:04:46,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 120 transitions, 252 flow. Second operand has 2 states, 2 states have (on average 204.0) internal successors, (408), 2 states have internal predecessors, (408), 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) [2023-08-25 04:04:46,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:04:46,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 355 [2023-08-25 04:04:46,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:04:47,926 INFO L124 PetriNetUnfolderBase]: 3720/9981 cut-off events. [2023-08-25 04:04:47,926 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-08-25 04:04:47,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15949 conditions, 9981 events. 3720/9981 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 93724 event pairs, 3720 based on Foata normal form. 815/9877 useless extension candidates. Maximal degree in co-relation 11305. Up to 5916 conditions per place. [2023-08-25 04:04:47,986 INFO L140 encePairwiseOnDemand]: 339/355 looper letters, 38 selfloop transitions, 0 changer transitions 0/104 dead transitions. [2023-08-25 04:04:47,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 104 transitions, 296 flow [2023-08-25 04:04:47,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 04:04:47,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 04:04:47,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 460 transitions. [2023-08-25 04:04:47,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.647887323943662 [2023-08-25 04:04:47,989 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 460 transitions. [2023-08-25 04:04:47,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 460 transitions. [2023-08-25 04:04:47,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:04:47,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 460 transitions. [2023-08-25 04:04:47,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 230.0) internal successors, (460), 2 states have internal predecessors, (460), 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) [2023-08-25 04:04:47,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 355.0) internal successors, (1065), 3 states have internal predecessors, (1065), 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) [2023-08-25 04:04:47,993 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 355.0) internal successors, (1065), 3 states have internal predecessors, (1065), 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) [2023-08-25 04:04:47,993 INFO L175 Difference]: Start difference. First operand has 111 places, 120 transitions, 252 flow. Second operand 2 states and 460 transitions. [2023-08-25 04:04:47,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 104 transitions, 296 flow [2023-08-25 04:04:47,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 104 transitions, 294 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-25 04:04:47,998 INFO L231 Difference]: Finished difference. Result has 110 places, 104 transitions, 218 flow [2023-08-25 04:04:47,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=218, PETRI_PLACES=110, PETRI_TRANSITIONS=104} [2023-08-25 04:04:47,999 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -1 predicate places. [2023-08-25 04:04:47,999 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 104 transitions, 218 flow [2023-08-25 04:04:48,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 204.0) internal successors, (408), 2 states have internal predecessors, (408), 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) [2023-08-25 04:04:48,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:04:48,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-25 04:04:48,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 04:04:48,000 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 04:04:48,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:04:48,001 INFO L85 PathProgramCache]: Analyzing trace with hash 976998, now seen corresponding path program 1 times [2023-08-25 04:04:48,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:04:48,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547215618] [2023-08-25 04:04:48,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:04:48,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:04:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:04:48,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:04:48,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:04:48,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547215618] [2023-08-25 04:04:48,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547215618] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:04:48,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:04:48,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:04:48,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065387719] [2023-08-25 04:04:48,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:04:48,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:04:48,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:04:48,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:04:48,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:04:48,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 355 [2023-08-25 04:04:48,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 104 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 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) [2023-08-25 04:04:48,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:04:48,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 355 [2023-08-25 04:04:48,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:04:48,891 INFO L124 PetriNetUnfolderBase]: 3720/9836 cut-off events. [2023-08-25 04:04:48,892 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-25 04:04:48,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15801 conditions, 9836 events. 3720/9836 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 92219 event pairs, 1716 based on Foata normal form. 0/9064 useless extension candidates. Maximal degree in co-relation 15796. Up to 5892 conditions per place. [2023-08-25 04:04:48,957 INFO L140 encePairwiseOnDemand]: 352/355 looper letters, 50 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2023-08-25 04:04:48,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 118 transitions, 350 flow [2023-08-25 04:04:48,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:04:48,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:04:48,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 638 transitions. [2023-08-25 04:04:48,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5990610328638498 [2023-08-25 04:04:48,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 638 transitions. [2023-08-25 04:04:48,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 638 transitions. [2023-08-25 04:04:48,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:04:48,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 638 transitions. [2023-08-25 04:04:48,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 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) [2023-08-25 04:04:48,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 355.0) internal successors, (1420), 4 states have internal predecessors, (1420), 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) [2023-08-25 04:04:48,965 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 355.0) internal successors, (1420), 4 states have internal predecessors, (1420), 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) [2023-08-25 04:04:48,965 INFO L175 Difference]: Start difference. First operand has 110 places, 104 transitions, 218 flow. Second operand 3 states and 638 transitions. [2023-08-25 04:04:48,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 118 transitions, 350 flow [2023-08-25 04:04:48,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 118 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:04:48,968 INFO L231 Difference]: Finished difference. Result has 113 places, 105 transitions, 230 flow [2023-08-25 04:04:48,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=113, PETRI_TRANSITIONS=105} [2023-08-25 04:04:48,969 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 2 predicate places. [2023-08-25 04:04:48,969 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 105 transitions, 230 flow [2023-08-25 04:04:48,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 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) [2023-08-25 04:04:48,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:04:48,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:04:48,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 04:04:48,970 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 04:04:48,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:04:48,971 INFO L85 PathProgramCache]: Analyzing trace with hash 138606176, now seen corresponding path program 1 times [2023-08-25 04:04:48,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:04:48,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788073799] [2023-08-25 04:04:48,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:04:48,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:04:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:04:49,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:04:49,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:04:49,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788073799] [2023-08-25 04:04:49,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788073799] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:04:49,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608967197] [2023-08-25 04:04:49,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:04:49,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:04:49,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:04:49,025 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 04:04:49,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 04:04:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:04:49,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 04:04:49,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:04:49,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 04:04:49,135 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 04:04:49,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608967197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:04:49,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 04:04:49,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-25 04:04:49,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980331583] [2023-08-25 04:04:49,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:04:49,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:04:49,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:04:49,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:04:49,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 04:04:49,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 355 [2023-08-25 04:04:49,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 105 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 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) [2023-08-25 04:04:49,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:04:49,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 355 [2023-08-25 04:04:49,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:04:50,115 INFO L124 PetriNetUnfolderBase]: 5317/12838 cut-off events. [2023-08-25 04:04:50,115 INFO L125 PetriNetUnfolderBase]: For 550/550 co-relation queries the response was YES. [2023-08-25 04:04:50,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21799 conditions, 12838 events. 5317/12838 cut-off events. For 550/550 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 116760 event pairs, 3984 based on Foata normal form. 0/12226 useless extension candidates. Maximal degree in co-relation 21792. Up to 8334 conditions per place. [2023-08-25 04:04:50,176 INFO L140 encePairwiseOnDemand]: 347/355 looper letters, 51 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2023-08-25 04:04:50,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 110 transitions, 360 flow [2023-08-25 04:04:50,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:04:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:04:50,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 621 transitions. [2023-08-25 04:04:50,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5830985915492958 [2023-08-25 04:04:50,178 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 621 transitions. [2023-08-25 04:04:50,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 621 transitions. [2023-08-25 04:04:50,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:04:50,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 621 transitions. [2023-08-25 04:04:50,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 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) [2023-08-25 04:04:50,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 355.0) internal successors, (1420), 4 states have internal predecessors, (1420), 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) [2023-08-25 04:04:50,183 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 355.0) internal successors, (1420), 4 states have internal predecessors, (1420), 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) [2023-08-25 04:04:50,183 INFO L175 Difference]: Start difference. First operand has 113 places, 105 transitions, 230 flow. Second operand 3 states and 621 transitions. [2023-08-25 04:04:50,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 110 transitions, 360 flow [2023-08-25 04:04:50,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 110 transitions, 357 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 04:04:50,186 INFO L231 Difference]: Finished difference. Result has 110 places, 103 transitions, 241 flow [2023-08-25 04:04:50,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=110, PETRI_TRANSITIONS=103} [2023-08-25 04:04:50,186 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -1 predicate places. [2023-08-25 04:04:50,187 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 103 transitions, 241 flow [2023-08-25 04:04:50,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 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) [2023-08-25 04:04:50,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:04:50,187 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-25 04:04:50,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-25 04:04:50,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:04:50,393 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 04:04:50,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:04:50,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1686532624, now seen corresponding path program 1 times [2023-08-25 04:04:50,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:04:50,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47758261] [2023-08-25 04:04:50,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:04:50,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:04:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:04:50,408 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 04:04:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:04:50,433 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 04:04:50,433 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 04:04:50,433 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 24 remaining) [2023-08-25 04:04:50,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (22 of 24 remaining) [2023-08-25 04:04:50,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (21 of 24 remaining) [2023-08-25 04:04:50,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (20 of 24 remaining) [2023-08-25 04:04:50,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (19 of 24 remaining) [2023-08-25 04:04:50,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (18 of 24 remaining) [2023-08-25 04:04:50,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 24 remaining) [2023-08-25 04:04:50,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 24 remaining) [2023-08-25 04:04:50,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 24 remaining) [2023-08-25 04:04:50,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 24 remaining) [2023-08-25 04:04:50,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 24 remaining) [2023-08-25 04:04:50,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 24 remaining) [2023-08-25 04:04:50,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 24 remaining) [2023-08-25 04:04:50,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 24 remaining) [2023-08-25 04:04:50,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 24 remaining) [2023-08-25 04:04:50,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 24 remaining) [2023-08-25 04:04:50,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 24 remaining) [2023-08-25 04:04:50,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 24 remaining) [2023-08-25 04:04:50,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 24 remaining) [2023-08-25 04:04:50,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 24 remaining) [2023-08-25 04:04:50,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 24 remaining) [2023-08-25 04:04:50,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 24 remaining) [2023-08-25 04:04:50,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 24 remaining) [2023-08-25 04:04:50,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 24 remaining) [2023-08-25 04:04:50,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 04:04:50,436 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-25 04:04:50,436 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 04:04:50,436 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-25 04:04:50,471 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 04:04:50,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 274 places, 290 transitions, 601 flow [2023-08-25 04:04:50,526 INFO L124 PetriNetUnfolderBase]: 38/459 cut-off events. [2023-08-25 04:04:50,526 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-25 04:04:50,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 459 events. 38/459 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1985 event pairs, 0 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 338. Up to 8 conditions per place. [2023-08-25 04:04:50,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 274 places, 290 transitions, 601 flow [2023-08-25 04:04:50,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 274 places, 290 transitions, 601 flow [2023-08-25 04:04:50,536 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:04:50,536 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 274 places, 290 transitions, 601 flow [2023-08-25 04:04:50,537 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 274 places, 290 transitions, 601 flow [2023-08-25 04:04:50,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 274 places, 290 transitions, 601 flow [2023-08-25 04:04:50,589 INFO L124 PetriNetUnfolderBase]: 38/459 cut-off events. [2023-08-25 04:04:50,590 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-25 04:04:50,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 459 events. 38/459 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1985 event pairs, 0 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 338. Up to 8 conditions per place. [2023-08-25 04:04:50,616 INFO L119 LiptonReduction]: Number of co-enabled transitions 49896 [2023-08-25 04:04:53,542 INFO L134 LiptonReduction]: Checked pairs total: 254550 [2023-08-25 04:04:53,542 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-08-25 04:04:53,544 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:04:53,544 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=LoopsAndPotentialCycles, 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;@5ba47913, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:04:53,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-08-25 04:04:53,545 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:04:53,546 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-25 04:04:53,546 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:04:53,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:04:53,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-25 04:04:53,546 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 04:04:53,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:04:53,546 INFO L85 PathProgramCache]: Analyzing trace with hash 47833, now seen corresponding path program 1 times [2023-08-25 04:04:53,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:04:53,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066218781] [2023-08-25 04:04:53,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:04:53,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:04:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:04:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:04:53,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:04:53,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066218781] [2023-08-25 04:04:53,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066218781] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:04:53,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:04:53,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 04:04:53,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027659405] [2023-08-25 04:04:53,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:04:53,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 04:04:53,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:04:53,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 04:04:53,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 04:04:53,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 443 [2023-08-25 04:04:53,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 168 transitions, 357 flow. Second operand has 2 states, 2 states have (on average 264.0) internal successors, (528), 2 states have internal predecessors, (528), 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) [2023-08-25 04:04:53,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:04:53,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 443 [2023-08-25 04:04:53,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:05:06,603 INFO L124 PetriNetUnfolderBase]: 74700/151965 cut-off events. [2023-08-25 04:05:06,604 INFO L125 PetriNetUnfolderBase]: For 1087/1087 co-relation queries the response was YES. [2023-08-25 04:05:07,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255994 conditions, 151965 events. 74700/151965 cut-off events. For 1087/1087 co-relation queries the response was YES. Maximal size of possible extension queue 3221. Compared 1776430 event pairs, 74700 based on Foata normal form. 10615/149449 useless extension candidates. Maximal degree in co-relation 137629. Up to 103260 conditions per place. [2023-08-25 04:05:08,054 INFO L140 encePairwiseOnDemand]: 421/443 looper letters, 51 selfloop transitions, 0 changer transitions 0/146 dead transitions. [2023-08-25 04:05:08,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 146 transitions, 415 flow [2023-08-25 04:05:08,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 04:05:08,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 04:05:08,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 599 transitions. [2023-08-25 04:05:08,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6760722347629797 [2023-08-25 04:05:08,057 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 599 transitions. [2023-08-25 04:05:08,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 599 transitions. [2023-08-25 04:05:08,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:05:08,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 599 transitions. [2023-08-25 04:05:08,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 299.5) internal successors, (599), 2 states have internal predecessors, (599), 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) [2023-08-25 04:05:08,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 443.0) internal successors, (1329), 3 states have internal predecessors, (1329), 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) [2023-08-25 04:05:08,067 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 443.0) internal successors, (1329), 3 states have internal predecessors, (1329), 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) [2023-08-25 04:05:08,067 INFO L175 Difference]: Start difference. First operand has 155 places, 168 transitions, 357 flow. Second operand 2 states and 599 transitions. [2023-08-25 04:05:08,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 146 transitions, 415 flow [2023-08-25 04:05:08,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 146 transitions, 409 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-25 04:05:08,073 INFO L231 Difference]: Finished difference. Result has 154 places, 146 transitions, 307 flow [2023-08-25 04:05:08,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=443, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=307, PETRI_PLACES=154, PETRI_TRANSITIONS=146} [2023-08-25 04:05:08,075 INFO L281 CegarLoopForPetriNet]: 155 programPoint places, -1 predicate places. [2023-08-25 04:05:08,075 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 146 transitions, 307 flow [2023-08-25 04:05:08,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 264.0) internal successors, (528), 2 states have internal predecessors, (528), 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) [2023-08-25 04:05:08,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:05:08,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-25 04:05:08,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 04:05:08,076 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 04:05:08,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:05:08,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1483247, now seen corresponding path program 1 times [2023-08-25 04:05:08,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:05:08,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379796396] [2023-08-25 04:05:08,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:05:08,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:05:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:05:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:05:08,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:05:08,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379796396] [2023-08-25 04:05:08,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379796396] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:05:08,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:05:08,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:05:08,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342925144] [2023-08-25 04:05:08,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:05:08,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:05:08,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:05:08,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:05:08,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:05:08,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 443 [2023-08-25 04:05:08,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 146 transitions, 307 flow. Second operand has 3 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 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) [2023-08-25 04:05:08,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:05:08,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 443 [2023-08-25 04:05:08,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:05:20,915 INFO L124 PetriNetUnfolderBase]: 74700/157932 cut-off events. [2023-08-25 04:05:20,915 INFO L125 PetriNetUnfolderBase]: For 494/494 co-relation queries the response was YES. [2023-08-25 04:05:21,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261788 conditions, 157932 events. 74700/157932 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 3338. Compared 1913189 event pairs, 48360 based on Foata normal form. 0/145353 useless extension candidates. Maximal degree in co-relation 261782. Up to 103236 conditions per place. [2023-08-25 04:05:22,110 INFO L140 encePairwiseOnDemand]: 440/443 looper letters, 63 selfloop transitions, 2 changer transitions 0/160 dead transitions. [2023-08-25 04:05:22,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 160 transitions, 465 flow [2023-08-25 04:05:22,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:05:22,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:05:22,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 831 transitions. [2023-08-25 04:05:22,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6252821670428894 [2023-08-25 04:05:22,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 831 transitions. [2023-08-25 04:05:22,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 831 transitions. [2023-08-25 04:05:22,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:05:22,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 831 transitions. [2023-08-25 04:05:22,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 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) [2023-08-25 04:05:22,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 443.0) internal successors, (1772), 4 states have internal predecessors, (1772), 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) [2023-08-25 04:05:22,120 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 443.0) internal successors, (1772), 4 states have internal predecessors, (1772), 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) [2023-08-25 04:05:22,120 INFO L175 Difference]: Start difference. First operand has 154 places, 146 transitions, 307 flow. Second operand 3 states and 831 transitions. [2023-08-25 04:05:22,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 160 transitions, 465 flow [2023-08-25 04:05:22,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 160 transitions, 465 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:05:22,123 INFO L231 Difference]: Finished difference. Result has 157 places, 147 transitions, 319 flow [2023-08-25 04:05:22,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=443, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=319, PETRI_PLACES=157, PETRI_TRANSITIONS=147} [2023-08-25 04:05:22,124 INFO L281 CegarLoopForPetriNet]: 155 programPoint places, 2 predicate places. [2023-08-25 04:05:22,124 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 147 transitions, 319 flow [2023-08-25 04:05:22,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 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) [2023-08-25 04:05:22,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:05:22,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:05:22,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 04:05:22,125 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 04:05:22,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:05:22,126 INFO L85 PathProgramCache]: Analyzing trace with hash -264069206, now seen corresponding path program 1 times [2023-08-25 04:05:22,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:05:22,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358621546] [2023-08-25 04:05:22,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:05:22,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:05:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:05:22,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:05:22,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:05:22,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358621546] [2023-08-25 04:05:22,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358621546] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:05:22,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263260157] [2023-08-25 04:05:22,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:05:22,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:05:22,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:05:22,178 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 04:05:22,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 04:05:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:05:22,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 04:05:22,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:05:22,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 04:05:22,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 04:05:22,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263260157] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:05:22,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 04:05:22,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-25 04:05:22,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764632766] [2023-08-25 04:05:22,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:05:22,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:05:22,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:05:22,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:05:22,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 04:05:22,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 443 [2023-08-25 04:05:22,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 147 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 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) [2023-08-25 04:05:22,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:05:22,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 443 [2023-08-25 04:05:22,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:05:42,522 INFO L124 PetriNetUnfolderBase]: 149033/269486 cut-off events. [2023-08-25 04:05:42,522 INFO L125 PetriNetUnfolderBase]: For 10129/10129 co-relation queries the response was YES. [2023-08-25 04:05:43,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484378 conditions, 269486 events. 149033/269486 cut-off events. For 10129/10129 co-relation queries the response was YES. Maximal size of possible extension queue 5028. Compared 2953062 event pairs, 120781 based on Foata normal form. 0/255789 useless extension candidates. Maximal degree in co-relation 484370. Up to 204580 conditions per place. [2023-08-25 04:05:44,484 INFO L140 encePairwiseOnDemand]: 432/443 looper letters, 71 selfloop transitions, 4 changer transitions 0/153 dead transitions. [2023-08-25 04:05:44,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 153 transitions, 498 flow [2023-08-25 04:05:44,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:05:44,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:05:44,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 806 transitions. [2023-08-25 04:05:44,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6064710308502633 [2023-08-25 04:05:44,486 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 806 transitions. [2023-08-25 04:05:44,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 806 transitions. [2023-08-25 04:05:44,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:05:44,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 806 transitions. [2023-08-25 04:05:44,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 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) [2023-08-25 04:05:44,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 443.0) internal successors, (1772), 4 states have internal predecessors, (1772), 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) [2023-08-25 04:05:44,491 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 443.0) internal successors, (1772), 4 states have internal predecessors, (1772), 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) [2023-08-25 04:05:44,491 INFO L175 Difference]: Start difference. First operand has 157 places, 147 transitions, 319 flow. Second operand 3 states and 806 transitions. [2023-08-25 04:05:44,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 153 transitions, 498 flow [2023-08-25 04:05:44,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 153 transitions, 495 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 04:05:44,494 INFO L231 Difference]: Finished difference. Result has 152 places, 144 transitions, 333 flow [2023-08-25 04:05:44,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=443, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=333, PETRI_PLACES=152, PETRI_TRANSITIONS=144} [2023-08-25 04:05:44,495 INFO L281 CegarLoopForPetriNet]: 155 programPoint places, -3 predicate places. [2023-08-25 04:05:44,495 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 144 transitions, 333 flow [2023-08-25 04:05:44,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 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) [2023-08-25 04:05:44,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:05:44,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:05:44,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-25 04:05:44,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-25 04:05:44,700 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 04:05:44,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:05:44,701 INFO L85 PathProgramCache]: Analyzing trace with hash 609888513, now seen corresponding path program 1 times [2023-08-25 04:05:44,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:05:44,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39976808] [2023-08-25 04:05:44,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:05:44,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:05:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:05:44,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:05:44,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:05:44,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39976808] [2023-08-25 04:05:44,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39976808] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:05:44,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:05:44,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 04:05:44,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063120076] [2023-08-25 04:05:44,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:05:44,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 04:05:44,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:05:44,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 04:05:44,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 04:05:44,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 443 [2023-08-25 04:05:44,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 144 transitions, 333 flow. Second operand has 6 states, 6 states have (on average 172.83333333333334) internal successors, (1037), 6 states have internal predecessors, (1037), 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) [2023-08-25 04:05:44,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:05:44,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 443 [2023-08-25 04:05:44,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand