/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 --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -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/pthread-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 17:11:45,080 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 17:11:45,137 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 17:11:45,142 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 17:11:45,142 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 17:11:45,172 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 17:11:45,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 17:11:45,176 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 17:11:45,176 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 17:11:45,177 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 17:11:45,177 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 17:11:45,177 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 17:11:45,177 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 17:11:45,178 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 17:11:45,178 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 17:11:45,178 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 17:11:45,178 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 17:11:45,179 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 17:11:45,179 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 17:11:45,179 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 17:11:45,179 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 17:11:45,182 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 17:11:45,182 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 17:11:45,182 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 17:11:45,182 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 17:11:45,182 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 17:11:45,182 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 17:11:45,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 17:11:45,183 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 17:11:45,183 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 17:11:45,183 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 17:11:45,183 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 17:11:45,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 17:11:45,184 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 17:11:45,184 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 17:11:45,184 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 17:11:45,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 17:11:45,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 17:11:45,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 17:11:45,604 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 17:11:45,604 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 17:11:45,605 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2023-08-25 17:11:46,590 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 17:11:46,855 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 17:11:46,855 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2023-08-25 17:11:46,870 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e78fac266/264acbe4e0a34920b5e0aafca2b6b8d3/FLAG953cef513 [2023-08-25 17:11:46,881 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e78fac266/264acbe4e0a34920b5e0aafca2b6b8d3 [2023-08-25 17:11:46,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 17:11:46,884 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 17:11:46,884 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 17:11:46,884 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 17:11:46,886 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 17:11:46,886 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:11:46" (1/1) ... [2023-08-25 17:11:46,887 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68c9758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:11:46, skipping insertion in model container [2023-08-25 17:11:46,887 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:11:46" (1/1) ... [2023-08-25 17:11:46,957 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 17:11:47,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 17:11:47,425 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 17:11:47,444 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-25 17:11:47,445 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [246] [2023-08-25 17:11:47,458 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [1102] [2023-08-25 17:11:47,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 17:11:47,537 INFO L206 MainTranslator]: Completed translation [2023-08-25 17:11:47,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:11:47 WrapperNode [2023-08-25 17:11:47,537 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 17:11:47,538 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 17:11:47,538 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 17:11:47,538 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 17:11:47,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:11:47" (1/1) ... [2023-08-25 17:11:47,567 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:11:47" (1/1) ... [2023-08-25 17:11:47,590 INFO L138 Inliner]: procedures = 364, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2023-08-25 17:11:47,590 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 17:11:47,591 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 17:11:47,591 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 17:11:47,591 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 17:11:47,597 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:11:47" (1/1) ... [2023-08-25 17:11:47,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:11:47" (1/1) ... [2023-08-25 17:11:47,607 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:11:47" (1/1) ... [2023-08-25 17:11:47,607 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:11:47" (1/1) ... [2023-08-25 17:11:47,614 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:11:47" (1/1) ... [2023-08-25 17:11:47,616 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:11:47" (1/1) ... [2023-08-25 17:11:47,617 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:11:47" (1/1) ... [2023-08-25 17:11:47,617 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:11:47" (1/1) ... [2023-08-25 17:11:47,625 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 17:11:47,625 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 17:11:47,625 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 17:11:47,625 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 17:11:47,626 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:11:47" (1/1) ... [2023-08-25 17:11:47,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 17:11:47,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:11:47,648 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 17:11:47,656 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 17:11:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 17:11:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 17:11:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 17:11:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 17:11:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 17:11:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 17:11:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2023-08-25 17:11:47,678 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2023-08-25 17:11:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 17:11:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 17:11:47,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 17:11:47,679 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 17:11:47,762 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 17:11:47,763 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 17:11:47,905 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 17:11:47,910 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 17:11:47,910 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 17:11:47,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:11:47 BoogieIcfgContainer [2023-08-25 17:11:47,912 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 17:11:47,913 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 17:11:47,913 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 17:11:47,915 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 17:11:47,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 05:11:46" (1/3) ... [2023-08-25 17:11:47,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7517c478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:11:47, skipping insertion in model container [2023-08-25 17:11:47,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:11:47" (2/3) ... [2023-08-25 17:11:47,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7517c478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:11:47, skipping insertion in model container [2023-08-25 17:11:47,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:11:47" (3/3) ... [2023-08-25 17:11:47,916 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2023-08-25 17:11:47,927 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 17:11:47,928 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-25 17:11:47,928 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 17:11:47,969 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-25 17:11:47,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 120 transitions, 248 flow [2023-08-25 17:11:48,037 INFO L124 PetriNetUnfolderBase]: 8/119 cut-off events. [2023-08-25 17:11:48,037 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 17:11:48,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 119 events. 8/119 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-08-25 17:11:48,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 120 transitions, 248 flow [2023-08-25 17:11:48,044 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 109 transitions, 224 flow [2023-08-25 17:11:48,049 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:11:48,060 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 109 transitions, 224 flow [2023-08-25 17:11:48,065 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 109 transitions, 224 flow [2023-08-25 17:11:48,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 109 transitions, 224 flow [2023-08-25 17:11:48,105 INFO L124 PetriNetUnfolderBase]: 6/109 cut-off events. [2023-08-25 17:11:48,105 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 17:11:48,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 109 events. 6/109 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 147 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-08-25 17:11:48,111 INFO L119 LiptonReduction]: Number of co-enabled transitions 1782 [2023-08-25 17:11:49,908 INFO L134 LiptonReduction]: Checked pairs total: 4604 [2023-08-25 17:11:49,908 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-08-25 17:11:49,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 17:11:49,924 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;@4f2ac4e9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 17:11:49,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-25 17:11:49,925 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 17:11:49,925 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-25 17:11:49,925 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:11:49,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:11:49,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 17:11:49,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-25 17:11:49,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:11:49,931 INFO L85 PathProgramCache]: Analyzing trace with hash 424, now seen corresponding path program 1 times [2023-08-25 17:11:49,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:11:49,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605594133] [2023-08-25 17:11:49,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:11:49,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:11:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:11:50,009 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 17:11:50,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:11:50,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605594133] [2023-08-25 17:11:50,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605594133] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:11:50,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:11:50,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 17:11:50,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531481288] [2023-08-25 17:11:50,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:11:50,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 17:11:50,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:11:50,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 17:11:50,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 17:11:50,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 208 [2023-08-25 17:11:50,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 66 flow. Second operand has 2 states, 2 states have (on average 109.5) internal successors, (219), 2 states have internal predecessors, (219), 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 17:11:50,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:11:50,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 208 [2023-08-25 17:11:50,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:11:50,076 INFO L124 PetriNetUnfolderBase]: 57/162 cut-off events. [2023-08-25 17:11:50,076 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 17:11:50,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 162 events. 57/162 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 632 event pairs, 42 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 270. Up to 117 conditions per place. [2023-08-25 17:11:50,094 INFO L140 encePairwiseOnDemand]: 205/208 looper letters, 19 selfloop transitions, 0 changer transitions 0/27 dead transitions. [2023-08-25 17:11:50,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 98 flow [2023-08-25 17:11:50,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 17:11:50,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 17:11:50,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 240 transitions. [2023-08-25 17:11:50,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2023-08-25 17:11:50,103 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 240 transitions. [2023-08-25 17:11:50,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 240 transitions. [2023-08-25 17:11:50,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:11:50,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 240 transitions. [2023-08-25 17:11:50,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 120.0) internal successors, (240), 2 states have internal predecessors, (240), 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 17:11:50,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 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 17:11:50,113 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 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 17:11:50,115 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 66 flow. Second operand 2 states and 240 transitions. [2023-08-25 17:11:50,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 98 flow [2023-08-25 17:11:50,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 94 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 17:11:50,117 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 56 flow [2023-08-25 17:11:50,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=56, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2023-08-25 17:11:50,124 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -4 predicate places. [2023-08-25 17:11:50,125 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 56 flow [2023-08-25 17:11:50,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 109.5) internal successors, (219), 2 states have internal predecessors, (219), 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 17:11:50,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:11:50,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-25 17:11:50,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 17:11:50,125 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-25 17:11:50,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:11:50,133 INFO L85 PathProgramCache]: Analyzing trace with hash -482654658, now seen corresponding path program 1 times [2023-08-25 17:11:50,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:11:50,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950108943] [2023-08-25 17:11:50,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:11:50,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:11:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:11:50,208 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 17:11:50,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:11:50,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950108943] [2023-08-25 17:11:50,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950108943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:11:50,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:11:50,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 17:11:50,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447712882] [2023-08-25 17:11:50,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:11:50,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 17:11:50,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:11:50,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 17:11:50,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 17:11:50,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 208 [2023-08-25 17:11:50,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 17:11:50,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:11:50,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 208 [2023-08-25 17:11:50,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:11:50,271 INFO L124 PetriNetUnfolderBase]: 165/339 cut-off events. [2023-08-25 17:11:50,272 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:11:50,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 339 events. 165/339 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1323 event pairs, 55 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 679. Up to 198 conditions per place. [2023-08-25 17:11:50,273 INFO L140 encePairwiseOnDemand]: 199/208 looper letters, 41 selfloop transitions, 7 changer transitions 0/48 dead transitions. [2023-08-25 17:11:50,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 48 transitions, 194 flow [2023-08-25 17:11:50,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 17:11:50,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 17:11:50,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2023-08-25 17:11:50,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176282051282052 [2023-08-25 17:11:50,275 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2023-08-25 17:11:50,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2023-08-25 17:11:50,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:11:50,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2023-08-25 17:11:50,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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 17:11:50,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 17:11:50,279 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 17:11:50,279 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 56 flow. Second operand 3 states and 323 transitions. [2023-08-25 17:11:50,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 48 transitions, 194 flow [2023-08-25 17:11:50,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 48 transitions, 194 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 17:11:50,280 INFO L231 Difference]: Finished difference. Result has 32 places, 33 transitions, 112 flow [2023-08-25 17:11:50,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=32, PETRI_TRANSITIONS=33} [2023-08-25 17:11:50,281 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2023-08-25 17:11:50,281 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 33 transitions, 112 flow [2023-08-25 17:11:50,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 17:11:50,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:11:50,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:11:50,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 17:11:50,281 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-25 17:11:50,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:11:50,282 INFO L85 PathProgramCache]: Analyzing trace with hash 91070421, now seen corresponding path program 1 times [2023-08-25 17:11:50,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:11:50,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804722139] [2023-08-25 17:11:50,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:11:50,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:11:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:11:50,350 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 17:11:50,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:11:50,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804722139] [2023-08-25 17:11:50,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804722139] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:11:50,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:11:50,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 17:11:50,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882113929] [2023-08-25 17:11:50,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:11:50,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 17:11:50,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:11:50,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 17:11:50,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 17:11:50,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 208 [2023-08-25 17:11:50,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 33 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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 17:11:50,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:11:50,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 208 [2023-08-25 17:11:50,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:11:50,419 INFO L124 PetriNetUnfolderBase]: 165/418 cut-off events. [2023-08-25 17:11:50,419 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2023-08-25 17:11:50,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 941 conditions, 418 events. 165/418 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1920 event pairs, 71 based on Foata normal form. 0/375 useless extension candidates. Maximal degree in co-relation 936. Up to 185 conditions per place. [2023-08-25 17:11:50,424 INFO L140 encePairwiseOnDemand]: 205/208 looper letters, 34 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-25 17:11:50,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 48 transitions, 226 flow [2023-08-25 17:11:50,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 17:11:50,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 17:11:50,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2023-08-25 17:11:50,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5480769230769231 [2023-08-25 17:11:50,429 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2023-08-25 17:11:50,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2023-08-25 17:11:50,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:11:50,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2023-08-25 17:11:50,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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 17:11:50,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 17:11:50,434 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 17:11:50,435 INFO L175 Difference]: Start difference. First operand has 32 places, 33 transitions, 112 flow. Second operand 3 states and 342 transitions. [2023-08-25 17:11:50,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 48 transitions, 226 flow [2023-08-25 17:11:50,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 48 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 17:11:50,439 INFO L231 Difference]: Finished difference. Result has 33 places, 34 transitions, 110 flow [2023-08-25 17:11:50,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=33, PETRI_TRANSITIONS=34} [2023-08-25 17:11:50,440 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2023-08-25 17:11:50,442 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 34 transitions, 110 flow [2023-08-25 17:11:50,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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 17:11:50,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:11:50,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:11:50,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 17:11:50,445 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-25 17:11:50,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:11:50,445 INFO L85 PathProgramCache]: Analyzing trace with hash 891018521, now seen corresponding path program 1 times [2023-08-25 17:11:50,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:11:50,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74970168] [2023-08-25 17:11:50,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:11:50,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:11:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:11:50,490 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 17:11:50,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:11:50,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74970168] [2023-08-25 17:11:50,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74970168] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:11:50,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:11:50,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 17:11:50,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774018359] [2023-08-25 17:11:50,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:11:50,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 17:11:50,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:11:50,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 17:11:50,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 17:11:50,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 208 [2023-08-25 17:11:50,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 34 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 17:11:50,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:11:50,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 208 [2023-08-25 17:11:50,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:11:50,549 INFO L124 PetriNetUnfolderBase]: 299/610 cut-off events. [2023-08-25 17:11:50,549 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2023-08-25 17:11:50,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1496 conditions, 610 events. 299/610 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2590 event pairs, 163 based on Foata normal form. 0/514 useless extension candidates. Maximal degree in co-relation 1490. Up to 558 conditions per place. [2023-08-25 17:11:50,551 INFO L140 encePairwiseOnDemand]: 203/208 looper letters, 43 selfloop transitions, 6 changer transitions 0/49 dead transitions. [2023-08-25 17:11:50,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 49 transitions, 258 flow [2023-08-25 17:11:50,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 17:11:50,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 17:11:50,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2023-08-25 17:11:50,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48878205128205127 [2023-08-25 17:11:50,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2023-08-25 17:11:50,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2023-08-25 17:11:50,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:11:50,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2023-08-25 17:11:50,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 17:11:50,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 17:11:50,554 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 17:11:50,554 INFO L175 Difference]: Start difference. First operand has 33 places, 34 transitions, 110 flow. Second operand 3 states and 305 transitions. [2023-08-25 17:11:50,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 49 transitions, 258 flow [2023-08-25 17:11:50,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 49 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 17:11:50,556 INFO L231 Difference]: Finished difference. Result has 35 places, 38 transitions, 150 flow [2023-08-25 17:11:50,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=35, PETRI_TRANSITIONS=38} [2023-08-25 17:11:50,556 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2023-08-25 17:11:50,556 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 38 transitions, 150 flow [2023-08-25 17:11:50,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 17:11:50,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:11:50,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:11:50,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 17:11:50,557 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-25 17:11:50,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:11:50,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1404687786, now seen corresponding path program 1 times [2023-08-25 17:11:50,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:11:50,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994075022] [2023-08-25 17:11:50,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:11:50,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:11:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:11:50,575 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 17:11:50,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:11:50,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994075022] [2023-08-25 17:11:50,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994075022] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:11:50,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:11:50,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 17:11:50,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868233067] [2023-08-25 17:11:50,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:11:50,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 17:11:50,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:11:50,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 17:11:50,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 17:11:50,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 208 [2023-08-25 17:11:50,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 38 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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 17:11:50,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:11:50,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 208 [2023-08-25 17:11:50,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:11:50,637 INFO L124 PetriNetUnfolderBase]: 297/606 cut-off events. [2023-08-25 17:11:50,638 INFO L125 PetriNetUnfolderBase]: For 273/273 co-relation queries the response was YES. [2023-08-25 17:11:50,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1646 conditions, 606 events. 297/606 cut-off events. For 273/273 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2486 event pairs, 149 based on Foata normal form. 0/526 useless extension candidates. Maximal degree in co-relation 1639. Up to 554 conditions per place. [2023-08-25 17:11:50,640 INFO L140 encePairwiseOnDemand]: 203/208 looper letters, 43 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2023-08-25 17:11:50,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 51 transitions, 298 flow [2023-08-25 17:11:50,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 17:11:50,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 17:11:50,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2023-08-25 17:11:50,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49198717948717946 [2023-08-25 17:11:50,644 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2023-08-25 17:11:50,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2023-08-25 17:11:50,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:11:50,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2023-08-25 17:11:50,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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 17:11:50,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 17:11:50,647 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 17:11:50,647 INFO L175 Difference]: Start difference. First operand has 35 places, 38 transitions, 150 flow. Second operand 3 states and 307 transitions. [2023-08-25 17:11:50,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 51 transitions, 298 flow [2023-08-25 17:11:50,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 51 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 17:11:50,650 INFO L231 Difference]: Finished difference. Result has 37 places, 42 transitions, 196 flow [2023-08-25 17:11:50,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=37, PETRI_TRANSITIONS=42} [2023-08-25 17:11:50,652 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2023-08-25 17:11:50,652 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 42 transitions, 196 flow [2023-08-25 17:11:50,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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 17:11:50,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:11:50,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:11:50,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 17:11:50,653 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-25 17:11:50,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:11:50,653 INFO L85 PathProgramCache]: Analyzing trace with hash 327781357, now seen corresponding path program 1 times [2023-08-25 17:11:50,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:11:50,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253498050] [2023-08-25 17:11:50,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:11:50,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:11:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:11:50,749 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 17:11:50,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:11:50,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253498050] [2023-08-25 17:11:50,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253498050] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:11:50,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:11:50,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 17:11:50,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467493161] [2023-08-25 17:11:50,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:11:50,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 17:11:50,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:11:50,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 17:11:50,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 17:11:50,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 208 [2023-08-25 17:11:50,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 42 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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 17:11:50,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:11:50,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 208 [2023-08-25 17:11:50,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:11:50,778 INFO L124 PetriNetUnfolderBase]: 41/122 cut-off events. [2023-08-25 17:11:50,779 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-08-25 17:11:50,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 122 events. 41/122 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 330 event pairs, 6 based on Foata normal form. 8/126 useless extension candidates. Maximal degree in co-relation 322. Up to 74 conditions per place. [2023-08-25 17:11:50,780 INFO L140 encePairwiseOnDemand]: 204/208 looper letters, 19 selfloop transitions, 5 changer transitions 0/28 dead transitions. [2023-08-25 17:11:50,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 150 flow [2023-08-25 17:11:50,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 17:11:50,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 17:11:50,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2023-08-25 17:11:50,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160256410256411 [2023-08-25 17:11:50,781 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2023-08-25 17:11:50,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2023-08-25 17:11:50,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:11:50,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2023-08-25 17:11:50,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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 17:11:50,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 17:11:50,783 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 17:11:50,784 INFO L175 Difference]: Start difference. First operand has 37 places, 42 transitions, 196 flow. Second operand 3 states and 322 transitions. [2023-08-25 17:11:50,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 150 flow [2023-08-25 17:11:50,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 28 transitions, 118 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-08-25 17:11:50,787 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 68 flow [2023-08-25 17:11:50,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2023-08-25 17:11:50,789 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -4 predicate places. [2023-08-25 17:11:50,789 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 68 flow [2023-08-25 17:11:50,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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 17:11:50,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:11:50,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:11:50,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 17:11:50,789 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-25 17:11:50,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:11:50,790 INFO L85 PathProgramCache]: Analyzing trace with hash 251937751, now seen corresponding path program 1 times [2023-08-25 17:11:50,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:11:50,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049793923] [2023-08-25 17:11:50,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:11:50,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:11:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:11:50,833 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 17:11:50,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:11:50,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049793923] [2023-08-25 17:11:50,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049793923] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:11:50,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:11:50,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 17:11:50,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347291924] [2023-08-25 17:11:50,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:11:50,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 17:11:50,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:11:50,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 17:11:50,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 17:11:50,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 208 [2023-08-25 17:11:50,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 17:11:50,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:11:50,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 208 [2023-08-25 17:11:50,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:11:50,875 INFO L124 PetriNetUnfolderBase]: 53/168 cut-off events. [2023-08-25 17:11:50,876 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-08-25 17:11:50,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 168 events. 53/168 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 538 event pairs, 24 based on Foata normal form. 14/182 useless extension candidates. Maximal degree in co-relation 377. Up to 93 conditions per place. [2023-08-25 17:11:50,876 INFO L140 encePairwiseOnDemand]: 205/208 looper letters, 32 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-08-25 17:11:50,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 182 flow [2023-08-25 17:11:50,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 17:11:50,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 17:11:50,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 339 transitions. [2023-08-25 17:11:50,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5432692307692307 [2023-08-25 17:11:50,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 339 transitions. [2023-08-25 17:11:50,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 339 transitions. [2023-08-25 17:11:50,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:11:50,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 339 transitions. [2023-08-25 17:11:50,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 17:11:50,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 17:11:50,881 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 17:11:50,881 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 68 flow. Second operand 3 states and 339 transitions. [2023-08-25 17:11:50,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 182 flow [2023-08-25 17:11:50,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 17:11:50,882 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 76 flow [2023-08-25 17:11:50,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-08-25 17:11:50,883 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -2 predicate places. [2023-08-25 17:11:50,883 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 76 flow [2023-08-25 17:11:50,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 17:11:50,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:11:50,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:11:50,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 17:11:50,886 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-25 17:11:50,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:11:50,887 INFO L85 PathProgramCache]: Analyzing trace with hash -897068791, now seen corresponding path program 1 times [2023-08-25 17:11:50,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:11:50,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853559232] [2023-08-25 17:11:50,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:11:50,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:11:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:11:50,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:11:50,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:11:50,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853559232] [2023-08-25 17:11:50,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853559232] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:11:50,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736689885] [2023-08-25 17:11:50,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:11:50,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:11:50,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:11:51,005 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 17:11:51,006 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 17:11:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:11:51,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 17:11:51,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:11:51,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:11:51,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:11:51,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:11:51,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736689885] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:11:51,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:11:51,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-25 17:11:51,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713970130] [2023-08-25 17:11:51,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:11:51,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 17:11:51,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:11:51,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 17:11:51,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 17:11:51,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 208 [2023-08-25 17:11:51,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 107.42857142857143) internal successors, (752), 7 states have internal predecessors, (752), 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 17:11:51,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:11:51,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 208 [2023-08-25 17:11:51,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:11:51,303 INFO L124 PetriNetUnfolderBase]: 81/298 cut-off events. [2023-08-25 17:11:51,303 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2023-08-25 17:11:51,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 298 events. 81/298 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 957 event pairs, 17 based on Foata normal form. 42/340 useless extension candidates. Maximal degree in co-relation 683. Up to 65 conditions per place. [2023-08-25 17:11:51,304 INFO L140 encePairwiseOnDemand]: 204/208 looper letters, 66 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-08-25 17:11:51,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 76 transitions, 376 flow [2023-08-25 17:11:51,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:11:51,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:11:51,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 682 transitions. [2023-08-25 17:11:51,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5464743589743589 [2023-08-25 17:11:51,306 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 682 transitions. [2023-08-25 17:11:51,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 682 transitions. [2023-08-25 17:11:51,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:11:51,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 682 transitions. [2023-08-25 17:11:51,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.66666666666667) internal successors, (682), 6 states have internal predecessors, (682), 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 17:11:51,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 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 17:11:51,309 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 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 17:11:51,309 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 76 flow. Second operand 6 states and 682 transitions. [2023-08-25 17:11:51,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 76 transitions, 376 flow [2023-08-25 17:11:51,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 76 transitions, 374 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 17:11:51,310 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 117 flow [2023-08-25 17:11:51,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=117, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2023-08-25 17:11:51,311 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 6 predicate places. [2023-08-25 17:11:51,311 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 117 flow [2023-08-25 17:11:51,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.42857142857143) internal successors, (752), 7 states have internal predecessors, (752), 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 17:11:51,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:11:51,312 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:11:51,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 17:11:51,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:11:51,517 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-25 17:11:51,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:11:51,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1983532459, now seen corresponding path program 2 times [2023-08-25 17:11:51,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:11:51,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244019066] [2023-08-25 17:11:51,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:11:51,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:11:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:11:51,577 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-08-25 17:11:51,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:11:51,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244019066] [2023-08-25 17:11:51,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244019066] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:11:51,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546386609] [2023-08-25 17:11:51,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 17:11:51,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:11:51,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:11:51,578 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 17:11:51,580 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 17:11:51,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 17:11:51,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:11:51,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 17:11:51,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:11:51,717 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-08-25 17:11:51,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:11:51,761 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-08-25 17:11:51,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546386609] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:11:51,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:11:51,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-25 17:11:51,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999509665] [2023-08-25 17:11:51,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:11:51,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 17:11:51,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:11:51,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 17:11:51,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 17:11:51,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 208 [2023-08-25 17:11:51,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 117 flow. Second operand has 7 states, 7 states have (on average 108.85714285714286) internal successors, (762), 7 states have internal predecessors, (762), 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 17:11:51,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:11:51,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 208 [2023-08-25 17:11:51,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:11:51,859 INFO L124 PetriNetUnfolderBase]: 122/524 cut-off events. [2023-08-25 17:11:51,859 INFO L125 PetriNetUnfolderBase]: For 566/566 co-relation queries the response was YES. [2023-08-25 17:11:51,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1399 conditions, 524 events. 122/524 cut-off events. For 566/566 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2067 event pairs, 24 based on Foata normal form. 69/593 useless extension candidates. Maximal degree in co-relation 1389. Up to 104 conditions per place. [2023-08-25 17:11:51,861 INFO L140 encePairwiseOnDemand]: 204/208 looper letters, 80 selfloop transitions, 6 changer transitions 0/90 dead transitions. [2023-08-25 17:11:51,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 90 transitions, 615 flow [2023-08-25 17:11:51,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:11:51,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:11:51,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 687 transitions. [2023-08-25 17:11:51,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5504807692307693 [2023-08-25 17:11:51,863 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 687 transitions. [2023-08-25 17:11:51,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 687 transitions. [2023-08-25 17:11:51,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:11:51,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 687 transitions. [2023-08-25 17:11:51,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 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 17:11:51,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 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 17:11:51,866 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 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 17:11:51,866 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 117 flow. Second operand 6 states and 687 transitions. [2023-08-25 17:11:51,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 90 transitions, 615 flow [2023-08-25 17:11:51,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 90 transitions, 575 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-08-25 17:11:51,867 INFO L231 Difference]: Finished difference. Result has 46 places, 31 transitions, 152 flow [2023-08-25 17:11:51,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=152, PETRI_PLACES=46, PETRI_TRANSITIONS=31} [2023-08-25 17:11:51,868 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2023-08-25 17:11:51,868 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 31 transitions, 152 flow [2023-08-25 17:11:51,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.85714285714286) internal successors, (762), 7 states have internal predecessors, (762), 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 17:11:51,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:11:51,868 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:11:51,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 17:11:52,073 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,SelfDestructingSolverStorable8 [2023-08-25 17:11:52,073 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-25 17:11:52,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:11:52,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1078049525, now seen corresponding path program 3 times [2023-08-25 17:11:52,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:11:52,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917592851] [2023-08-25 17:11:52,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:11:52,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:11:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:11:52,202 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 4 proven. 46 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-08-25 17:11:52,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:11:52,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917592851] [2023-08-25 17:11:52,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917592851] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:11:52,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285052071] [2023-08-25 17:11:52,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 17:11:52,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:11:52,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:11:52,218 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:11:52,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 17:11:52,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-25 17:11:52,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:11:52,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 17:11:52,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:11:52,430 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 16 proven. 52 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-25 17:11:52,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:11:52,516 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 16 proven. 52 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-25 17:11:52,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285052071] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:11:52,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:11:52,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-25 17:11:52,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48025435] [2023-08-25 17:11:52,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:11:52,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 17:11:52,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:11:52,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 17:11:52,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-08-25 17:11:52,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 208 [2023-08-25 17:11:52,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 31 transitions, 152 flow. Second operand has 17 states, 17 states have (on average 101.88235294117646) internal successors, (1732), 17 states have internal predecessors, (1732), 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 17:11:52,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:11:52,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 208 [2023-08-25 17:11:52,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:11:53,421 INFO L124 PetriNetUnfolderBase]: 253/1384 cut-off events. [2023-08-25 17:11:53,422 INFO L125 PetriNetUnfolderBase]: For 3869/3869 co-relation queries the response was YES. [2023-08-25 17:11:53,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3867 conditions, 1384 events. 253/1384 cut-off events. For 3869/3869 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 6894 event pairs, 8 based on Foata normal form. 255/1639 useless extension candidates. Maximal degree in co-relation 3853. Up to 159 conditions per place. [2023-08-25 17:11:53,427 INFO L140 encePairwiseOnDemand]: 201/208 looper letters, 596 selfloop transitions, 138 changer transitions 0/738 dead transitions. [2023-08-25 17:11:53,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 738 transitions, 4424 flow [2023-08-25 17:11:53,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-08-25 17:11:53,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-08-25 17:11:53,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 7213 transitions. [2023-08-25 17:11:53,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175803673938002 [2023-08-25 17:11:53,438 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 7213 transitions. [2023-08-25 17:11:53,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 7213 transitions. [2023-08-25 17:11:53,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:11:53,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 7213 transitions. [2023-08-25 17:11:53,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 107.65671641791045) internal successors, (7213), 67 states have internal predecessors, (7213), 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 17:11:53,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 208.0) internal successors, (14144), 68 states have internal predecessors, (14144), 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 17:11:53,464 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 208.0) internal successors, (14144), 68 states have internal predecessors, (14144), 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 17:11:53,464 INFO L175 Difference]: Start difference. First operand has 46 places, 31 transitions, 152 flow. Second operand 67 states and 7213 transitions. [2023-08-25 17:11:53,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 738 transitions, 4424 flow [2023-08-25 17:11:53,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 738 transitions, 4304 flow, removed 54 selfloop flow, removed 1 redundant places. [2023-08-25 17:11:53,474 INFO L231 Difference]: Finished difference. Result has 157 places, 170 transitions, 1702 flow [2023-08-25 17:11:53,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=1702, PETRI_PLACES=157, PETRI_TRANSITIONS=170} [2023-08-25 17:11:53,475 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 125 predicate places. [2023-08-25 17:11:53,475 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 170 transitions, 1702 flow [2023-08-25 17:11:53,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 101.88235294117646) internal successors, (1732), 17 states have internal predecessors, (1732), 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 17:11:53,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:11:53,476 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:11:53,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-25 17:11:53,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:11:53,682 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-25 17:11:53,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:11:53,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1246292249, now seen corresponding path program 4 times [2023-08-25 17:11:53,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:11:53,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024972360] [2023-08-25 17:11:53,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:11:53,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:11:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:11:53,914 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 10 proven. 75 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2023-08-25 17:11:53,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:11:53,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024972360] [2023-08-25 17:11:53,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024972360] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:11:53,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013208532] [2023-08-25 17:11:53,914 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 17:11:53,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:11:53,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:11:53,915 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:11:53,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 17:11:54,059 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 17:11:54,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:11:54,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-25 17:11:54,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:11:54,180 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 10 proven. 75 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2023-08-25 17:11:54,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:11:54,337 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 10 proven. 75 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2023-08-25 17:11:54,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013208532] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:11:54,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:11:54,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-08-25 17:11:54,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087039646] [2023-08-25 17:11:54,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:11:54,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 17:11:54,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:11:54,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 17:11:54,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2023-08-25 17:11:54,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 208 [2023-08-25 17:11:54,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 170 transitions, 1702 flow. Second operand has 15 states, 15 states have (on average 107.26666666666667) internal successors, (1609), 15 states have internal predecessors, (1609), 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 17:11:54,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:11:54,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 208 [2023-08-25 17:11:54,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:11:54,877 INFO L124 PetriNetUnfolderBase]: 392/2556 cut-off events. [2023-08-25 17:11:54,877 INFO L125 PetriNetUnfolderBase]: For 113383/113383 co-relation queries the response was YES. [2023-08-25 17:11:54,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11019 conditions, 2556 events. 392/2556 cut-off events. For 113383/113383 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 15544 event pairs, 68 based on Foata normal form. 441/2997 useless extension candidates. Maximal degree in co-relation 10959. Up to 307 conditions per place. [2023-08-25 17:11:54,898 INFO L140 encePairwiseOnDemand]: 204/208 looper letters, 300 selfloop transitions, 144 changer transitions 0/448 dead transitions. [2023-08-25 17:11:54,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 448 transitions, 5550 flow [2023-08-25 17:11:54,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 17:11:54,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 17:11:54,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1606 transitions. [2023-08-25 17:11:54,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.551510989010989 [2023-08-25 17:11:54,901 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1606 transitions. [2023-08-25 17:11:54,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1606 transitions. [2023-08-25 17:11:54,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:11:54,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1606 transitions. [2023-08-25 17:11:54,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 114.71428571428571) internal successors, (1606), 14 states have internal predecessors, (1606), 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 17:11:54,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 208.0) internal successors, (3120), 15 states have internal predecessors, (3120), 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 17:11:54,971 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 208.0) internal successors, (3120), 15 states have internal predecessors, (3120), 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 17:11:54,972 INFO L175 Difference]: Start difference. First operand has 157 places, 170 transitions, 1702 flow. Second operand 14 states and 1606 transitions. [2023-08-25 17:11:54,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 448 transitions, 5550 flow [2023-08-25 17:11:55,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 448 transitions, 5406 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-25 17:11:55,074 INFO L231 Difference]: Finished difference. Result has 172 places, 237 transitions, 2683 flow [2023-08-25 17:11:55,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2683, PETRI_PLACES=172, PETRI_TRANSITIONS=237} [2023-08-25 17:11:55,074 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 140 predicate places. [2023-08-25 17:11:55,074 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 237 transitions, 2683 flow [2023-08-25 17:11:55,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 107.26666666666667) internal successors, (1609), 15 states have internal predecessors, (1609), 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 17:11:55,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:11:55,075 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:11:55,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-25 17:11:55,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:11:55,280 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-25 17:11:55,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:11:55,281 INFO L85 PathProgramCache]: Analyzing trace with hash 60062681, now seen corresponding path program 5 times [2023-08-25 17:11:55,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:11:55,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982727915] [2023-08-25 17:11:55,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:11:55,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:11:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:11:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-08-25 17:11:55,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:11:55,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982727915] [2023-08-25 17:11:55,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982727915] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:11:55,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218925538] [2023-08-25 17:11:55,600 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 17:11:55,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:11:55,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:11:55,613 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:11:55,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 17:11:55,763 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-08-25 17:11:55,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:11:55,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-25 17:11:55,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:11:55,967 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 12 proven. 370 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-08-25 17:11:55,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:11:56,198 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 12 proven. 370 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-08-25 17:11:56,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218925538] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:11:56,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:11:56,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 35 [2023-08-25 17:11:56,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487146915] [2023-08-25 17:11:56,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:11:56,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-25 17:11:56,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:11:56,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-25 17:11:56,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=855, Unknown=0, NotChecked=0, Total=1190 [2023-08-25 17:11:56,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 208 [2023-08-25 17:11:56,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 237 transitions, 2683 flow. Second operand has 35 states, 35 states have (on average 101.68571428571428) internal successors, (3559), 35 states have internal predecessors, (3559), 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 17:11:56,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:11:56,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 208 [2023-08-25 17:11:56,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:12:05,783 INFO L124 PetriNetUnfolderBase]: 681/5219 cut-off events. [2023-08-25 17:12:05,783 INFO L125 PetriNetUnfolderBase]: For 715434/715434 co-relation queries the response was YES. [2023-08-25 17:12:05,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21363 conditions, 5219 events. 681/5219 cut-off events. For 715434/715434 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 36193 event pairs, 8 based on Foata normal form. 843/6062 useless extension candidates. Maximal degree in co-relation 21295. Up to 643 conditions per place. [2023-08-25 17:12:05,827 INFO L140 encePairwiseOnDemand]: 201/208 looper letters, 2636 selfloop transitions, 612 changer transitions 0/3252 dead transitions. [2023-08-25 17:12:05,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 3252 transitions, 25698 flow [2023-08-25 17:12:05,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 295 states. [2023-08-25 17:12:05,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2023-08-25 17:12:05,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 31719 transitions. [2023-08-25 17:12:05,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5169328552803129 [2023-08-25 17:12:05,915 INFO L72 ComplementDD]: Start complementDD. Operand 295 states and 31719 transitions. [2023-08-25 17:12:05,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 295 states and 31719 transitions. [2023-08-25 17:12:05,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:12:05,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 295 states and 31719 transitions. [2023-08-25 17:12:05,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 296 states, 295 states have (on average 107.52203389830508) internal successors, (31719), 295 states have internal predecessors, (31719), 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 17:12:06,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 296 states, 296 states have (on average 208.0) internal successors, (61568), 296 states have internal predecessors, (61568), 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 17:12:06,022 INFO L81 ComplementDD]: Finished complementDD. Result has 296 states, 296 states have (on average 208.0) internal successors, (61568), 296 states have internal predecessors, (61568), 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 17:12:06,022 INFO L175 Difference]: Start difference. First operand has 172 places, 237 transitions, 2683 flow. Second operand 295 states and 31719 transitions. [2023-08-25 17:12:06,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 3252 transitions, 25698 flow [2023-08-25 17:12:06,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 3252 transitions, 25478 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-25 17:12:06,270 INFO L231 Difference]: Finished difference. Result has 625 places, 661 transitions, 9631 flow [2023-08-25 17:12:06,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=2573, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=295, PETRI_FLOW=9631, PETRI_PLACES=625, PETRI_TRANSITIONS=661} [2023-08-25 17:12:06,271 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 593 predicate places. [2023-08-25 17:12:06,271 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 661 transitions, 9631 flow [2023-08-25 17:12:06,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 101.68571428571428) internal successors, (3559), 35 states have internal predecessors, (3559), 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 17:12:06,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:12:06,272 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:12:06,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-25 17:12:06,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-25 17:12:06,479 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-25 17:12:06,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:12:06,480 INFO L85 PathProgramCache]: Analyzing trace with hash -869510509, now seen corresponding path program 6 times [2023-08-25 17:12:06,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:12:06,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775904640] [2023-08-25 17:12:06,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:12:06,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:12:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:12:06,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2099 backedges. 20 proven. 559 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2023-08-25 17:12:06,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:12:06,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775904640] [2023-08-25 17:12:06,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775904640] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:12:06,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441568029] [2023-08-25 17:12:06,890 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 17:12:06,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:12:06,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:12:06,891 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:12:06,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 17:12:07,311 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2023-08-25 17:12:07,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:12:07,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-25 17:12:07,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:12:07,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2099 backedges. 20 proven. 559 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2023-08-25 17:12:07,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:12:07,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2099 backedges. 20 proven. 559 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2023-08-25 17:12:07,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441568029] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:12:07,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:12:07,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 23 [2023-08-25 17:12:07,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444897879] [2023-08-25 17:12:07,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:12:07,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 17:12:07,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:12:07,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 17:12:07,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2023-08-25 17:12:07,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 208 [2023-08-25 17:12:07,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 661 transitions, 9631 flow. Second operand has 23 states, 23 states have (on average 107.08695652173913) internal successors, (2463), 23 states have internal predecessors, (2463), 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 17:12:07,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:12:07,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 208 [2023-08-25 17:12:07,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:12:11,156 INFO L124 PetriNetUnfolderBase]: 890/7366 cut-off events. [2023-08-25 17:12:11,157 INFO L125 PetriNetUnfolderBase]: For 2614040/2614040 co-relation queries the response was YES. [2023-08-25 17:12:11,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49666 conditions, 7366 events. 890/7366 cut-off events. For 2614040/2614040 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 55588 event pairs, 128 based on Foata normal form. 861/8227 useless extension candidates. Maximal degree in co-relation 49434. Up to 921 conditions per place. [2023-08-25 17:12:11,363 INFO L140 encePairwiseOnDemand]: 204/208 looper letters, 715 selfloop transitions, 452 changer transitions 0/1171 dead transitions. [2023-08-25 17:12:11,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 1171 transitions, 24515 flow [2023-08-25 17:12:11,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 17:12:11,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 17:12:11,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2526 transitions. [2023-08-25 17:12:11,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520104895104895 [2023-08-25 17:12:11,370 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2526 transitions. [2023-08-25 17:12:11,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2526 transitions. [2023-08-25 17:12:11,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:12:11,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2526 transitions. [2023-08-25 17:12:11,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 114.81818181818181) internal successors, (2526), 22 states have internal predecessors, (2526), 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 17:12:11,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 208.0) internal successors, (4784), 23 states have internal predecessors, (4784), 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 17:12:11,381 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 208.0) internal successors, (4784), 23 states have internal predecessors, (4784), 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 17:12:11,381 INFO L175 Difference]: Start difference. First operand has 625 places, 661 transitions, 9631 flow. Second operand 22 states and 2526 transitions. [2023-08-25 17:12:11,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 1171 transitions, 24515 flow [2023-08-25 17:12:15,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 1171 transitions, 23447 flow, removed 165 selfloop flow, removed 60 redundant places. [2023-08-25 17:12:15,641 INFO L231 Difference]: Finished difference. Result has 594 places, 788 transitions, 11858 flow [2023-08-25 17:12:15,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=8821, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=325, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=11858, PETRI_PLACES=594, PETRI_TRANSITIONS=788} [2023-08-25 17:12:15,642 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 562 predicate places. [2023-08-25 17:12:15,642 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 788 transitions, 11858 flow [2023-08-25 17:12:15,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 107.08695652173913) internal successors, (2463), 23 states have internal predecessors, (2463), 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 17:12:15,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:12:15,643 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:12:15,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-25 17:12:15,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:12:15,849 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-25 17:12:15,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:12:15,850 INFO L85 PathProgramCache]: Analyzing trace with hash 2096681383, now seen corresponding path program 7 times [2023-08-25 17:12:15,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:12:15,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240974765] [2023-08-25 17:12:15,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:12:15,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:12:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:12:18,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2890 backedges. 0 proven. 2890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:12:18,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:12:18,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240974765] [2023-08-25 17:12:18,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240974765] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:12:18,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369731218] [2023-08-25 17:12:18,753 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 17:12:18,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:12:18,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:12:18,758 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:12:18,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 17:12:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:12:18,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 128 conjunts are in the unsatisfiable core [2023-08-25 17:12:18,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:12:19,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2890 backedges. 0 proven. 2890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:12:19,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:12:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2890 backedges. 0 proven. 2890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:12:20,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369731218] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:12:20,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:12:20,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2023-08-25 17:12:20,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153691010] [2023-08-25 17:12:20,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:12:20,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-08-25 17:12:20,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:12:20,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-08-25 17:12:20,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2023-08-25 17:12:20,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 208 [2023-08-25 17:12:20,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 788 transitions, 11858 flow. Second operand has 63 states, 63 states have (on average 104.61904761904762) internal successors, (6591), 63 states have internal predecessors, (6591), 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 17:12:20,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:12:20,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 208 [2023-08-25 17:12:20,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:13:20,246 INFO L124 PetriNetUnfolderBase]: 8758/41253 cut-off events. [2023-08-25 17:13:20,247 INFO L125 PetriNetUnfolderBase]: For 9420298/9420298 co-relation queries the response was YES. [2023-08-25 17:13:21,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461400 conditions, 41253 events. 8758/41253 cut-off events. For 9420298/9420298 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 465125 event pairs, 3324 based on Foata normal form. 1/41254 useless extension candidates. Maximal degree in co-relation 461160. Up to 8080 conditions per place. [2023-08-25 17:13:21,962 INFO L140 encePairwiseOnDemand]: 203/208 looper letters, 4557 selfloop transitions, 543 changer transitions 1/5105 dead transitions. [2023-08-25 17:13:21,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 886 places, 5105 transitions, 94606 flow [2023-08-25 17:13:21,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 293 states. [2023-08-25 17:13:21,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2023-08-25 17:13:22,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 32138 transitions. [2023-08-25 17:13:22,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5273365712785508 [2023-08-25 17:13:22,018 INFO L72 ComplementDD]: Start complementDD. Operand 293 states and 32138 transitions. [2023-08-25 17:13:22,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 293 states and 32138 transitions. [2023-08-25 17:13:22,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:13:22,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 293 states and 32138 transitions. [2023-08-25 17:13:22,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 294 states, 293 states have (on average 109.68600682593856) internal successors, (32138), 293 states have internal predecessors, (32138), 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 17:13:22,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 294 states, 294 states have (on average 208.0) internal successors, (61152), 294 states have internal predecessors, (61152), 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 17:13:22,319 INFO L81 ComplementDD]: Finished complementDD. Result has 294 states, 294 states have (on average 208.0) internal successors, (61152), 294 states have internal predecessors, (61152), 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 17:13:22,319 INFO L175 Difference]: Start difference. First operand has 594 places, 788 transitions, 11858 flow. Second operand 293 states and 32138 transitions. [2023-08-25 17:13:22,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 886 places, 5105 transitions, 94606 flow [2023-08-25 17:18:21,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 873 places, 5105 transitions, 94023 flow, removed 0 selfloop flow, removed 13 redundant places. [2023-08-25 17:18:21,656 INFO L231 Difference]: Finished difference. Result has 874 places, 1371 transitions, 13647 flow [2023-08-25 17:18:21,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=11302, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=784, PETRI_DIFFERENCE_SUBTRAHEND_STATES=293, PETRI_FLOW=13647, PETRI_PLACES=874, PETRI_TRANSITIONS=1371} [2023-08-25 17:18:21,657 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 842 predicate places. [2023-08-25 17:18:21,657 INFO L495 AbstractCegarLoop]: Abstraction has has 874 places, 1371 transitions, 13647 flow [2023-08-25 17:18:21,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 104.61904761904762) internal successors, (6591), 63 states have internal predecessors, (6591), 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 17:18:21,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:21,658 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:21,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-25 17:18:21,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:21,864 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-25 17:18:21,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:21,865 INFO L85 PathProgramCache]: Analyzing trace with hash 773461799, now seen corresponding path program 8 times [2023-08-25 17:18:21,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:21,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960877587] [2023-08-25 17:18:21,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:21,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:24,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2890 backedges. 0 proven. 2890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:18:24,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:24,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960877587] [2023-08-25 17:18:24,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960877587] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:18:24,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787486338] [2023-08-25 17:18:24,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 17:18:24,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:24,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:24,850 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:18:24,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-25 17:18:25,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 17:18:25,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:18:25,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 128 conjunts are in the unsatisfiable core [2023-08-25 17:18:25,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:18:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2890 backedges. 0 proven. 2890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:18:25,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:18:26,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2890 backedges. 0 proven. 2890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:18:26,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787486338] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:18:26,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:18:26,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2023-08-25 17:18:26,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395487856] [2023-08-25 17:18:26,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:18:26,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-08-25 17:18:26,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:26,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-08-25 17:18:26,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2023-08-25 17:18:26,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 208 [2023-08-25 17:18:26,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 874 places, 1371 transitions, 13647 flow. Second operand has 63 states, 63 states have (on average 104.61904761904762) internal successors, (6591), 63 states have internal predecessors, (6591), 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 17:18:26,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:26,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 208 [2023-08-25 17:18:26,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:19:59,996 INFO L124 PetriNetUnfolderBase]: 21300/94331 cut-off events. [2023-08-25 17:19:59,996 INFO L125 PetriNetUnfolderBase]: For 21603628/21603628 co-relation queries the response was YES. [2023-08-25 17:20:05,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1141387 conditions, 94331 events. 21300/94331 cut-off events. For 21603628/21603628 co-relation queries the response was YES. Maximal size of possible extension queue 1223. Compared 1263984 event pairs, 9358 based on Foata normal form. 1/94332 useless extension candidates. Maximal degree in co-relation 1141145. Up to 29026 conditions per place. [2023-08-25 17:20:06,439 INFO L140 encePairwiseOnDemand]: 203/208 looper letters, 5097 selfloop transitions, 983 changer transitions 1/6085 dead transitions. [2023-08-25 17:20:06,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1173 places, 6085 transitions, 101108 flow [2023-08-25 17:20:06,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 300 states. [2023-08-25 17:20:06,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2023-08-25 17:20:06,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 32900 transitions. [2023-08-25 17:20:06,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272435897435898 [2023-08-25 17:20:06,457 INFO L72 ComplementDD]: Start complementDD. Operand 300 states and 32900 transitions. [2023-08-25 17:20:06,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 300 states and 32900 transitions. [2023-08-25 17:20:06,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:20:06,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 300 states and 32900 transitions. [2023-08-25 17:20:06,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 301 states, 300 states have (on average 109.66666666666667) internal successors, (32900), 300 states have internal predecessors, (32900), 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 17:20:06,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 301 states, 301 states have (on average 208.0) internal successors, (62608), 301 states have internal predecessors, (62608), 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 17:20:06,530 INFO L81 ComplementDD]: Finished complementDD. Result has 301 states, 301 states have (on average 208.0) internal successors, (62608), 301 states have internal predecessors, (62608), 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 17:20:06,530 INFO L175 Difference]: Start difference. First operand has 874 places, 1371 transitions, 13647 flow. Second operand 300 states and 32900 transitions. [2023-08-25 17:20:06,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1173 places, 6085 transitions, 101108 flow Received shutdown request... [2023-08-25 17:25:23,832 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 17:25:23,833 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 17:25:24,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-25 17:25:24,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown