/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/pthread/stack_longer-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 18:16:43,444 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 18:16:43,532 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 [2023-08-24 18:16:43,538 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 18:16:43,538 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 18:16:43,571 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 18:16:43,572 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 18:16:43,572 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 18:16:43,573 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 18:16:43,576 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 18:16:43,577 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 18:16:43,577 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 18:16:43,577 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 18:16:43,578 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 18:16:43,579 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 18:16:43,579 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 18:16:43,579 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 18:16:43,579 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 18:16:43,579 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 18:16:43,580 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 18:16:43,580 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 18:16:43,581 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 18:16:43,581 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 18:16:43,581 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 18:16:43,582 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 18:16:43,582 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 18:16:43,582 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 18:16:43,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:16:43,582 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 18:16:43,583 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 18:16:43,584 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 18:16:43,584 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 18:16:43,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 18:16:43,584 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 18:16:43,584 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 18:16:43,585 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-24 18:16:43,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 18:16:43,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 18:16:43,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 18:16:43,917 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 18:16:43,918 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 18:16:43,919 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longer-1.i [2023-08-24 18:16:45,007 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 18:16:45,280 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 18:16:45,280 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-1.i [2023-08-24 18:16:45,298 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20d5abd73/5c458cd47e55476692020ef6f0fc1fb4/FLAG24dff5a79 [2023-08-24 18:16:45,309 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20d5abd73/5c458cd47e55476692020ef6f0fc1fb4 [2023-08-24 18:16:45,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 18:16:45,313 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 18:16:45,314 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 18:16:45,314 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 18:16:45,316 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 18:16:45,316 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:16:45" (1/1) ... [2023-08-24 18:16:45,317 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13f851f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:45, skipping insertion in model container [2023-08-24 18:16:45,317 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:16:45" (1/1) ... [2023-08-24 18:16:45,368 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 18:16:45,819 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:16:45,832 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 18:16:45,859 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-24 18:16:45,861 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-24 18:16:45,866 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [753] [2023-08-24 18:16:45,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:16:45,967 INFO L206 MainTranslator]: Completed translation [2023-08-24 18:16:45,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:45 WrapperNode [2023-08-24 18:16:45,968 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 18:16:45,970 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 18:16:45,970 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 18:16:45,970 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 18:16:45,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:45" (1/1) ... [2023-08-24 18:16:46,005 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:45" (1/1) ... [2023-08-24 18:16:46,053 INFO L138 Inliner]: procedures = 277, calls = 40, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 210 [2023-08-24 18:16:46,053 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 18:16:46,055 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 18:16:46,055 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 18:16:46,055 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 18:16:46,062 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:45" (1/1) ... [2023-08-24 18:16:46,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:45" (1/1) ... [2023-08-24 18:16:46,078 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:45" (1/1) ... [2023-08-24 18:16:46,078 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:45" (1/1) ... [2023-08-24 18:16:46,087 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:45" (1/1) ... [2023-08-24 18:16:46,102 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:45" (1/1) ... [2023-08-24 18:16:46,108 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:45" (1/1) ... [2023-08-24 18:16:46,109 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:45" (1/1) ... [2023-08-24 18:16:46,112 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 18:16:46,113 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 18:16:46,113 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 18:16:46,113 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 18:16:46,114 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:45" (1/1) ... [2023-08-24 18:16:46,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:16:46,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:16:46,146 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) [2023-08-24 18:16:46,159 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 [2023-08-24 18:16:46,185 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-24 18:16:46,185 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-24 18:16:46,185 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-24 18:16:46,185 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-24 18:16:46,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 18:16:46,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 18:16:46,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 18:16:46,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 18:16:46,187 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 18:16:46,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 18:16:46,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 18:16:46,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 18:16:46,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 18:16:46,188 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 18:16:46,309 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 18:16:46,310 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 18:16:46,574 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 18:16:46,582 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 18:16:46,583 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-24 18:16:46,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:16:46 BoogieIcfgContainer [2023-08-24 18:16:46,585 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 18:16:46,587 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 18:16:46,587 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 18:16:46,589 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 18:16:46,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:16:45" (1/3) ... [2023-08-24 18:16:46,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b27847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:16:46, skipping insertion in model container [2023-08-24 18:16:46,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:45" (2/3) ... [2023-08-24 18:16:46,591 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b27847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:16:46, skipping insertion in model container [2023-08-24 18:16:46,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:16:46" (3/3) ... [2023-08-24 18:16:46,592 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2023-08-24 18:16:46,606 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 18:16:46,607 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-24 18:16:46,607 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 18:16:46,688 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 18:16:46,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 228 transitions, 472 flow [2023-08-24 18:16:46,846 INFO L124 PetriNetUnfolderBase]: 12/226 cut-off events. [2023-08-24 18:16:46,847 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 18:16:46,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 226 events. 12/226 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 598 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 184. Up to 3 conditions per place. [2023-08-24 18:16:46,858 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 228 transitions, 472 flow [2023-08-24 18:16:46,868 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 217 transitions, 443 flow [2023-08-24 18:16:46,872 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:16:46,886 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 217 transitions, 443 flow [2023-08-24 18:16:46,890 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 217 transitions, 443 flow [2023-08-24 18:16:46,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 217 transitions, 443 flow [2023-08-24 18:16:46,958 INFO L124 PetriNetUnfolderBase]: 12/217 cut-off events. [2023-08-24 18:16:46,959 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 18:16:46,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 217 events. 12/217 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 541 event pairs, 0 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 184. Up to 3 conditions per place. [2023-08-24 18:16:46,972 INFO L119 LiptonReduction]: Number of co-enabled transitions 19012 [2023-08-24 18:16:50,736 INFO L134 LiptonReduction]: Checked pairs total: 66547 [2023-08-24 18:16:50,737 INFO L136 LiptonReduction]: Total number of compositions: 160 [2023-08-24 18:16:50,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:16:50,754 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;@322e8943, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:16:50,755 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-08-24 18:16:50,758 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:16:50,758 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2023-08-24 18:16:50,758 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:16:50,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:16:50,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-24 18:16:50,760 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-24 18:16:50,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:16:50,764 INFO L85 PathProgramCache]: Analyzing trace with hash -94742553, now seen corresponding path program 1 times [2023-08-24 18:16:50,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:16:50,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836824792] [2023-08-24 18:16:50,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:16:50,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:16:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:16:50,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:16:50,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:16:50,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836824792] [2023-08-24 18:16:50,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836824792] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:16:50,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:16:50,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:16:50,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741581272] [2023-08-24 18:16:50,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:16:50,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:16:50,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:16:51,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:16:51,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:16:51,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 388 [2023-08-24 18:16:51,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 88 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 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) [2023-08-24 18:16:51,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:16:51,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 388 [2023-08-24 18:16:51,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:16:51,674 INFO L124 PetriNetUnfolderBase]: 2646/5322 cut-off events. [2023-08-24 18:16:51,674 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2023-08-24 18:16:51,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9903 conditions, 5322 events. 2646/5322 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 33642 event pairs, 873 based on Foata normal form. 96/4529 useless extension candidates. Maximal degree in co-relation 9314. Up to 2921 conditions per place. [2023-08-24 18:16:51,713 INFO L140 encePairwiseOnDemand]: 367/388 looper letters, 94 selfloop transitions, 14 changer transitions 0/137 dead transitions. [2023-08-24 18:16:51,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 137 transitions, 505 flow [2023-08-24 18:16:51,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:16:51,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:16:51,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 689 transitions. [2023-08-24 18:16:51,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5919243986254296 [2023-08-24 18:16:51,728 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 689 transitions. [2023-08-24 18:16:51,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 689 transitions. [2023-08-24 18:16:51,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:16:51,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 689 transitions. [2023-08-24 18:16:51,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 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) [2023-08-24 18:16:51,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 388.0) internal successors, (1552), 4 states have internal predecessors, (1552), 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) [2023-08-24 18:16:51,743 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 388.0) internal successors, (1552), 4 states have internal predecessors, (1552), 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) [2023-08-24 18:16:51,744 INFO L175 Difference]: Start difference. First operand has 89 places, 88 transitions, 185 flow. Second operand 3 states and 689 transitions. [2023-08-24 18:16:51,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 137 transitions, 505 flow [2023-08-24 18:16:51,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 137 transitions, 497 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 18:16:51,752 INFO L231 Difference]: Finished difference. Result has 90 places, 101 transitions, 302 flow [2023-08-24 18:16:51,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=90, PETRI_TRANSITIONS=101} [2023-08-24 18:16:51,761 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 1 predicate places. [2023-08-24 18:16:51,762 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 101 transitions, 302 flow [2023-08-24 18:16:51,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 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) [2023-08-24 18:16:51,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:16:51,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:16:51,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 18:16:51,763 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-24 18:16:51,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:16:51,772 INFO L85 PathProgramCache]: Analyzing trace with hash -360144720, now seen corresponding path program 1 times [2023-08-24 18:16:51,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:16:51,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249541635] [2023-08-24 18:16:51,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:16:51,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:16:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:16:51,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:16:51,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:16:51,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249541635] [2023-08-24 18:16:51,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249541635] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:16:51,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:16:51,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:16:51,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909314773] [2023-08-24 18:16:51,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:16:51,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:16:51,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:16:51,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:16:51,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:16:51,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 388 [2023-08-24 18:16:51,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 101 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 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) [2023-08-24 18:16:51,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:16:51,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 388 [2023-08-24 18:16:51,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:16:52,596 INFO L124 PetriNetUnfolderBase]: 3762/8021 cut-off events. [2023-08-24 18:16:52,597 INFO L125 PetriNetUnfolderBase]: For 894/940 co-relation queries the response was YES. [2023-08-24 18:16:52,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15957 conditions, 8021 events. 3762/8021 cut-off events. For 894/940 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 59924 event pairs, 1125 based on Foata normal form. 0/6807 useless extension candidates. Maximal degree in co-relation 15296. Up to 3391 conditions per place. [2023-08-24 18:16:52,655 INFO L140 encePairwiseOnDemand]: 384/388 looper letters, 91 selfloop transitions, 3 changer transitions 0/145 dead transitions. [2023-08-24 18:16:52,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 145 transitions, 609 flow [2023-08-24 18:16:52,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:16:52,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:16:52,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 712 transitions. [2023-08-24 18:16:52,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6116838487972509 [2023-08-24 18:16:52,659 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 712 transitions. [2023-08-24 18:16:52,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 712 transitions. [2023-08-24 18:16:52,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:16:52,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 712 transitions. [2023-08-24 18:16:52,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 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) [2023-08-24 18:16:52,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 388.0) internal successors, (1552), 4 states have internal predecessors, (1552), 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) [2023-08-24 18:16:52,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 388.0) internal successors, (1552), 4 states have internal predecessors, (1552), 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) [2023-08-24 18:16:52,665 INFO L175 Difference]: Start difference. First operand has 90 places, 101 transitions, 302 flow. Second operand 3 states and 712 transitions. [2023-08-24 18:16:52,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 145 transitions, 609 flow [2023-08-24 18:16:52,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 145 transitions, 571 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 18:16:52,681 INFO L231 Difference]: Finished difference. Result has 92 places, 104 transitions, 300 flow [2023-08-24 18:16:52,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=92, PETRI_TRANSITIONS=104} [2023-08-24 18:16:52,682 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 3 predicate places. [2023-08-24 18:16:52,682 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 104 transitions, 300 flow [2023-08-24 18:16:52,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 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) [2023-08-24 18:16:52,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:16:52,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:16:52,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 18:16:52,687 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err5ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-24 18:16:52,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:16:52,691 INFO L85 PathProgramCache]: Analyzing trace with hash -853253128, now seen corresponding path program 1 times [2023-08-24 18:16:52,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:16:52,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711347538] [2023-08-24 18:16:52,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:16:52,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:16:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:16:52,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:16:52,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:16:52,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711347538] [2023-08-24 18:16:52,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711347538] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:16:52,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:16:52,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:16:52,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835567412] [2023-08-24 18:16:52,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:16:52,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:16:52,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:16:52,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:16:52,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:16:52,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 388 [2023-08-24 18:16:52,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 104 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 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) [2023-08-24 18:16:52,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:16:52,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 388 [2023-08-24 18:16:52,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:16:53,912 INFO L124 PetriNetUnfolderBase]: 5731/12222 cut-off events. [2023-08-24 18:16:53,913 INFO L125 PetriNetUnfolderBase]: For 923/957 co-relation queries the response was YES. [2023-08-24 18:16:53,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24458 conditions, 12222 events. 5731/12222 cut-off events. For 923/957 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 98213 event pairs, 2027 based on Foata normal form. 0/10474 useless extension candidates. Maximal degree in co-relation 23546. Up to 5971 conditions per place. [2023-08-24 18:16:53,981 INFO L140 encePairwiseOnDemand]: 383/388 looper letters, 86 selfloop transitions, 4 changer transitions 0/144 dead transitions. [2023-08-24 18:16:53,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 144 transitions, 583 flow [2023-08-24 18:16:53,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:16:53,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:16:53,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 696 transitions. [2023-08-24 18:16:53,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5979381443298969 [2023-08-24 18:16:53,983 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 696 transitions. [2023-08-24 18:16:53,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 696 transitions. [2023-08-24 18:16:53,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:16:53,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 696 transitions. [2023-08-24 18:16:53,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 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) [2023-08-24 18:16:53,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 388.0) internal successors, (1552), 4 states have internal predecessors, (1552), 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) [2023-08-24 18:16:53,989 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 388.0) internal successors, (1552), 4 states have internal predecessors, (1552), 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) [2023-08-24 18:16:53,989 INFO L175 Difference]: Start difference. First operand has 92 places, 104 transitions, 300 flow. Second operand 3 states and 696 transitions. [2023-08-24 18:16:53,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 144 transitions, 583 flow [2023-08-24 18:16:53,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 144 transitions, 575 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 18:16:53,994 INFO L231 Difference]: Finished difference. Result has 94 places, 107 transitions, 324 flow [2023-08-24 18:16:53,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=94, PETRI_TRANSITIONS=107} [2023-08-24 18:16:53,995 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 5 predicate places. [2023-08-24 18:16:53,995 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 107 transitions, 324 flow [2023-08-24 18:16:53,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 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) [2023-08-24 18:16:53,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:16:53,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:16:53,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 18:16:53,996 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-24 18:16:53,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:16:53,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1761708474, now seen corresponding path program 1 times [2023-08-24 18:16:53,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:16:53,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853323529] [2023-08-24 18:16:53,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:16:53,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:16:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:16:54,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:16:54,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:16:54,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853323529] [2023-08-24 18:16:54,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853323529] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:16:54,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:16:54,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 18:16:54,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699859392] [2023-08-24 18:16:54,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:16:54,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 18:16:54,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:16:54,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 18:16:54,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-24 18:16:54,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 388 [2023-08-24 18:16:54,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 107 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 186.66666666666666) internal successors, (1120), 6 states have internal predecessors, (1120), 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) [2023-08-24 18:16:54,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:16:54,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 388 [2023-08-24 18:16:54,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:17:00,518 INFO L124 PetriNetUnfolderBase]: 53641/89821 cut-off events. [2023-08-24 18:17:00,518 INFO L125 PetriNetUnfolderBase]: For 17365/17831 co-relation queries the response was YES. [2023-08-24 18:17:00,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194774 conditions, 89821 events. 53641/89821 cut-off events. For 17365/17831 co-relation queries the response was YES. Maximal size of possible extension queue 1906. Compared 789983 event pairs, 15857 based on Foata normal form. 29/76011 useless extension candidates. Maximal degree in co-relation 192617. Up to 46655 conditions per place. [2023-08-24 18:17:01,233 INFO L140 encePairwiseOnDemand]: 378/388 looper letters, 268 selfloop transitions, 21 changer transitions 0/326 dead transitions. [2023-08-24 18:17:01,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 326 transitions, 1517 flow [2023-08-24 18:17:01,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 18:17:01,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 18:17:01,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1355 transitions. [2023-08-24 18:17:01,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5820446735395189 [2023-08-24 18:17:01,237 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1355 transitions. [2023-08-24 18:17:01,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1355 transitions. [2023-08-24 18:17:01,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:17:01,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1355 transitions. [2023-08-24 18:17:01,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 225.83333333333334) internal successors, (1355), 6 states have internal predecessors, (1355), 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) [2023-08-24 18:17:01,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 388.0) internal successors, (2716), 7 states have internal predecessors, (2716), 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) [2023-08-24 18:17:01,246 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 388.0) internal successors, (2716), 7 states have internal predecessors, (2716), 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) [2023-08-24 18:17:01,246 INFO L175 Difference]: Start difference. First operand has 94 places, 107 transitions, 324 flow. Second operand 6 states and 1355 transitions. [2023-08-24 18:17:01,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 326 transitions, 1517 flow [2023-08-24 18:17:01,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 326 transitions, 1485 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 18:17:01,264 INFO L231 Difference]: Finished difference. Result has 102 places, 127 transitions, 458 flow [2023-08-24 18:17:01,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=458, PETRI_PLACES=102, PETRI_TRANSITIONS=127} [2023-08-24 18:17:01,265 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 13 predicate places. [2023-08-24 18:17:01,266 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 127 transitions, 458 flow [2023-08-24 18:17:01,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 186.66666666666666) internal successors, (1120), 6 states have internal predecessors, (1120), 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) [2023-08-24 18:17:01,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:17:01,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:17:01,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 18:17:01,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-24 18:17:01,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:17:01,267 INFO L85 PathProgramCache]: Analyzing trace with hash -887198299, now seen corresponding path program 1 times [2023-08-24 18:17:01,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:17:01,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083606921] [2023-08-24 18:17:01,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:17:01,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:17:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:17:01,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:17:01,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:17:01,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083606921] [2023-08-24 18:17:01,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083606921] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:17:01,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:17:01,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:17:01,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379139942] [2023-08-24 18:17:01,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:17:01,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:17:01,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:17:01,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:17:01,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:17:01,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 388 [2023-08-24 18:17:01,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 127 transitions, 458 flow. Second operand has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 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) [2023-08-24 18:17:01,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:17:01,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 388 [2023-08-24 18:17:01,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:17:03,945 INFO L124 PetriNetUnfolderBase]: 15245/37529 cut-off events. [2023-08-24 18:17:03,945 INFO L125 PetriNetUnfolderBase]: For 6636/7021 co-relation queries the response was YES. [2023-08-24 18:17:04,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78964 conditions, 37529 events. 15245/37529 cut-off events. For 6636/7021 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 403327 event pairs, 7191 based on Foata normal form. 7/31675 useless extension candidates. Maximal degree in co-relation 78346. Up to 24953 conditions per place. [2023-08-24 18:17:04,239 INFO L140 encePairwiseOnDemand]: 385/388 looper letters, 79 selfloop transitions, 2 changer transitions 0/153 dead transitions. [2023-08-24 18:17:04,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 153 transitions, 699 flow [2023-08-24 18:17:04,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:17:04,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:17:04,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 698 transitions. [2023-08-24 18:17:04,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5996563573883161 [2023-08-24 18:17:04,246 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 698 transitions. [2023-08-24 18:17:04,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 698 transitions. [2023-08-24 18:17:04,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:17:04,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 698 transitions. [2023-08-24 18:17:04,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 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) [2023-08-24 18:17:04,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 388.0) internal successors, (1552), 4 states have internal predecessors, (1552), 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) [2023-08-24 18:17:04,254 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 388.0) internal successors, (1552), 4 states have internal predecessors, (1552), 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) [2023-08-24 18:17:04,254 INFO L175 Difference]: Start difference. First operand has 102 places, 127 transitions, 458 flow. Second operand 3 states and 698 transitions. [2023-08-24 18:17:04,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 153 transitions, 699 flow [2023-08-24 18:17:04,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 153 transitions, 699 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:17:04,273 INFO L231 Difference]: Finished difference. Result has 105 places, 128 transitions, 470 flow [2023-08-24 18:17:04,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=470, PETRI_PLACES=105, PETRI_TRANSITIONS=128} [2023-08-24 18:17:04,277 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 16 predicate places. [2023-08-24 18:17:04,277 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 128 transitions, 470 flow [2023-08-24 18:17:04,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 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) [2023-08-24 18:17:04,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:17:04,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:17:04,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 18:17:04,278 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-24 18:17:04,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:17:04,278 INFO L85 PathProgramCache]: Analyzing trace with hash -44230461, now seen corresponding path program 1 times [2023-08-24 18:17:04,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:17:04,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246993319] [2023-08-24 18:17:04,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:17:04,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:17:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:17:04,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:17:04,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:17:04,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246993319] [2023-08-24 18:17:04,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246993319] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:17:04,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:17:04,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 18:17:04,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820181197] [2023-08-24 18:17:04,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:17:04,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 18:17:04,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:17:04,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 18:17:04,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-24 18:17:04,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 388 [2023-08-24 18:17:04,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 128 transitions, 470 flow. Second operand has 6 states, 6 states have (on average 185.16666666666666) internal successors, (1111), 6 states have internal predecessors, (1111), 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) [2023-08-24 18:17:04,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:17:04,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 388 [2023-08-24 18:17:04,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:17:12,705 INFO L124 PetriNetUnfolderBase]: 59025/103614 cut-off events. [2023-08-24 18:17:12,705 INFO L125 PetriNetUnfolderBase]: For 60173/60356 co-relation queries the response was YES. [2023-08-24 18:17:13,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265526 conditions, 103614 events. 59025/103614 cut-off events. For 60173/60356 co-relation queries the response was YES. Maximal size of possible extension queue 1654. Compared 930014 event pairs, 31312 based on Foata normal form. 0/93106 useless extension candidates. Maximal degree in co-relation 264610. Up to 83848 conditions per place. [2023-08-24 18:17:13,343 INFO L140 encePairwiseOnDemand]: 374/388 looper letters, 191 selfloop transitions, 44 changer transitions 0/271 dead transitions. [2023-08-24 18:17:13,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 271 transitions, 1388 flow [2023-08-24 18:17:13,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 18:17:13,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 18:17:13,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1289 transitions. [2023-08-24 18:17:13,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5536941580756014 [2023-08-24 18:17:13,347 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1289 transitions. [2023-08-24 18:17:13,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1289 transitions. [2023-08-24 18:17:13,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:17:13,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1289 transitions. [2023-08-24 18:17:13,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 214.83333333333334) internal successors, (1289), 6 states have internal predecessors, (1289), 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) [2023-08-24 18:17:13,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 388.0) internal successors, (2716), 7 states have internal predecessors, (2716), 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) [2023-08-24 18:17:13,354 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 388.0) internal successors, (2716), 7 states have internal predecessors, (2716), 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) [2023-08-24 18:17:13,354 INFO L175 Difference]: Start difference. First operand has 105 places, 128 transitions, 470 flow. Second operand 6 states and 1289 transitions. [2023-08-24 18:17:13,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 271 transitions, 1388 flow [2023-08-24 18:17:13,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 271 transitions, 1386 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 18:17:13,784 INFO L231 Difference]: Finished difference. Result has 113 places, 167 transitions, 774 flow [2023-08-24 18:17:13,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=774, PETRI_PLACES=113, PETRI_TRANSITIONS=167} [2023-08-24 18:17:13,785 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 24 predicate places. [2023-08-24 18:17:13,785 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 167 transitions, 774 flow [2023-08-24 18:17:13,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 185.16666666666666) internal successors, (1111), 6 states have internal predecessors, (1111), 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) [2023-08-24 18:17:13,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:17:13,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:17:13,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 18:17:13,786 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-24 18:17:13,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:17:13,787 INFO L85 PathProgramCache]: Analyzing trace with hash -412101459, now seen corresponding path program 1 times [2023-08-24 18:17:13,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:17:13,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083306272] [2023-08-24 18:17:13,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:17:13,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:17:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:17:13,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:17:13,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:17:13,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083306272] [2023-08-24 18:17:13,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083306272] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:17:13,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:17:13,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 18:17:13,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216190132] [2023-08-24 18:17:13,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:17:13,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:17:13,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:17:13,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:17:13,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:17:13,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 388 [2023-08-24 18:17:13,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 167 transitions, 774 flow. Second operand has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 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) [2023-08-24 18:17:13,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:17:13,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 388 [2023-08-24 18:17:13,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:17:17,887 INFO L124 PetriNetUnfolderBase]: 20508/48090 cut-off events. [2023-08-24 18:17:17,887 INFO L125 PetriNetUnfolderBase]: For 24441/26617 co-relation queries the response was YES. [2023-08-24 18:17:18,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114928 conditions, 48090 events. 20508/48090 cut-off events. For 24441/26617 co-relation queries the response was YES. Maximal size of possible extension queue 1126. Compared 517935 event pairs, 8506 based on Foata normal form. 576/43654 useless extension candidates. Maximal degree in co-relation 108524. Up to 27644 conditions per place. [2023-08-24 18:17:18,254 INFO L140 encePairwiseOnDemand]: 385/388 looper letters, 96 selfloop transitions, 2 changer transitions 0/209 dead transitions. [2023-08-24 18:17:18,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 209 transitions, 1122 flow [2023-08-24 18:17:18,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:17:18,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:17:18,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 703 transitions. [2023-08-24 18:17:18,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6039518900343642 [2023-08-24 18:17:18,257 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 703 transitions. [2023-08-24 18:17:18,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 703 transitions. [2023-08-24 18:17:18,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:17:18,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 703 transitions. [2023-08-24 18:17:18,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 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) [2023-08-24 18:17:18,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 388.0) internal successors, (1552), 4 states have internal predecessors, (1552), 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) [2023-08-24 18:17:18,262 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 388.0) internal successors, (1552), 4 states have internal predecessors, (1552), 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) [2023-08-24 18:17:18,262 INFO L175 Difference]: Start difference. First operand has 113 places, 167 transitions, 774 flow. Second operand 3 states and 703 transitions. [2023-08-24 18:17:18,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 209 transitions, 1122 flow [2023-08-24 18:17:18,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 209 transitions, 1098 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-08-24 18:17:18,510 INFO L231 Difference]: Finished difference. Result has 116 places, 168 transitions, 762 flow [2023-08-24 18:17:18,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=762, PETRI_PLACES=116, PETRI_TRANSITIONS=168} [2023-08-24 18:17:18,511 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 27 predicate places. [2023-08-24 18:17:18,511 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 168 transitions, 762 flow [2023-08-24 18:17:18,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 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) [2023-08-24 18:17:18,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:17:18,512 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] [2023-08-24 18:17:18,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 18:17:18,513 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-24 18:17:18,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:17:18,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1450007878, now seen corresponding path program 1 times [2023-08-24 18:17:18,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:17:18,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611510863] [2023-08-24 18:17:18,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:17:18,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:17:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:17:19,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:17:19,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:17:19,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611510863] [2023-08-24 18:17:19,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611510863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:17:19,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:17:19,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 18:17:19,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029285464] [2023-08-24 18:17:19,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:17:19,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 18:17:19,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:17:19,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 18:17:19,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-24 18:17:19,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 388 [2023-08-24 18:17:19,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 168 transitions, 762 flow. Second operand has 10 states, 10 states have (on average 179.7) internal successors, (1797), 10 states have internal predecessors, (1797), 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) [2023-08-24 18:17:19,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:17:19,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 388 [2023-08-24 18:17:19,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:17:31,199 INFO L124 PetriNetUnfolderBase]: 77516/135650 cut-off events. [2023-08-24 18:17:31,199 INFO L125 PetriNetUnfolderBase]: For 102649/102950 co-relation queries the response was YES. [2023-08-24 18:17:31,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384668 conditions, 135650 events. 77516/135650 cut-off events. For 102649/102950 co-relation queries the response was YES. Maximal size of possible extension queue 2405. Compared 1279947 event pairs, 25723 based on Foata normal form. 2523/126120 useless extension candidates. Maximal degree in co-relation 355070. Up to 57810 conditions per place. [2023-08-24 18:17:32,162 INFO L140 encePairwiseOnDemand]: 375/388 looper letters, 446 selfloop transitions, 33 changer transitions 0/515 dead transitions. [2023-08-24 18:17:32,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 515 transitions, 2971 flow [2023-08-24 18:17:32,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 18:17:32,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 18:17:32,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1927 transitions. [2023-08-24 18:17:32,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5518327605956472 [2023-08-24 18:17:32,168 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1927 transitions. [2023-08-24 18:17:32,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1927 transitions. [2023-08-24 18:17:32,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:17:32,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1927 transitions. [2023-08-24 18:17:32,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 214.11111111111111) internal successors, (1927), 9 states have internal predecessors, (1927), 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) [2023-08-24 18:17:32,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 388.0) internal successors, (3880), 10 states have internal predecessors, (3880), 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) [2023-08-24 18:17:32,178 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 388.0) internal successors, (3880), 10 states have internal predecessors, (3880), 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) [2023-08-24 18:17:32,178 INFO L175 Difference]: Start difference. First operand has 116 places, 168 transitions, 762 flow. Second operand 9 states and 1927 transitions. [2023-08-24 18:17:32,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 515 transitions, 2971 flow [2023-08-24 18:17:36,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 515 transitions, 2960 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 18:17:36,338 INFO L231 Difference]: Finished difference. Result has 127 places, 180 transitions, 978 flow [2023-08-24 18:17:36,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=978, PETRI_PLACES=127, PETRI_TRANSITIONS=180} [2023-08-24 18:17:36,339 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 38 predicate places. [2023-08-24 18:17:36,339 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 180 transitions, 978 flow [2023-08-24 18:17:36,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 179.7) internal successors, (1797), 10 states have internal predecessors, (1797), 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) [2023-08-24 18:17:36,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:17:36,340 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] [2023-08-24 18:17:36,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 18:17:36,341 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-24 18:17:36,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:17:36,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1867245836, now seen corresponding path program 2 times [2023-08-24 18:17:36,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:17:36,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894415662] [2023-08-24 18:17:36,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:17:36,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:17:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:17:36,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:17:36,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:17:36,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894415662] [2023-08-24 18:17:36,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894415662] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:17:36,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:17:36,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 18:17:36,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50932759] [2023-08-24 18:17:36,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:17:36,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 18:17:36,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:17:36,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 18:17:36,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-08-24 18:17:36,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 388 [2023-08-24 18:17:36,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 180 transitions, 978 flow. Second operand has 10 states, 10 states have (on average 179.7) internal successors, (1797), 10 states have internal predecessors, (1797), 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) [2023-08-24 18:17:36,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:17:36,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 388 [2023-08-24 18:17:36,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:17:53,780 INFO L124 PetriNetUnfolderBase]: 110686/190397 cut-off events. [2023-08-24 18:17:53,780 INFO L125 PetriNetUnfolderBase]: For 268887/269302 co-relation queries the response was YES. [2023-08-24 18:17:54,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592902 conditions, 190397 events. 110686/190397 cut-off events. For 268887/269302 co-relation queries the response was YES. Maximal size of possible extension queue 3239. Compared 1823563 event pairs, 26018 based on Foata normal form. 2890/179854 useless extension candidates. Maximal degree in co-relation 591796. Up to 64652 conditions per place. [2023-08-24 18:17:55,500 INFO L140 encePairwiseOnDemand]: 379/388 looper letters, 503 selfloop transitions, 51 changer transitions 0/590 dead transitions. [2023-08-24 18:17:55,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 590 transitions, 3830 flow [2023-08-24 18:17:55,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 18:17:55,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 18:17:55,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2270 transitions. [2023-08-24 18:17:55,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5318650421743205 [2023-08-24 18:17:55,506 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2270 transitions. [2023-08-24 18:17:55,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2270 transitions. [2023-08-24 18:17:55,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:17:55,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2270 transitions. [2023-08-24 18:17:55,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 206.36363636363637) internal successors, (2270), 11 states have internal predecessors, (2270), 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) [2023-08-24 18:17:55,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 388.0) internal successors, (4656), 12 states have internal predecessors, (4656), 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) [2023-08-24 18:17:55,517 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 388.0) internal successors, (4656), 12 states have internal predecessors, (4656), 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) [2023-08-24 18:17:55,517 INFO L175 Difference]: Start difference. First operand has 127 places, 180 transitions, 978 flow. Second operand 11 states and 2270 transitions. [2023-08-24 18:17:55,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 590 transitions, 3830 flow [2023-08-24 18:18:02,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 590 transitions, 3787 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 18:18:02,153 INFO L231 Difference]: Finished difference. Result has 140 places, 220 transitions, 1448 flow [2023-08-24 18:18:02,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1448, PETRI_PLACES=140, PETRI_TRANSITIONS=220} [2023-08-24 18:18:02,154 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 51 predicate places. [2023-08-24 18:18:02,154 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 220 transitions, 1448 flow [2023-08-24 18:18:02,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 179.7) internal successors, (1797), 10 states have internal predecessors, (1797), 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) [2023-08-24 18:18:02,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:18:02,155 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] [2023-08-24 18:18:02,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 18:18:02,155 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-24 18:18:02,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:18:02,155 INFO L85 PathProgramCache]: Analyzing trace with hash -88202224, now seen corresponding path program 3 times [2023-08-24 18:18:02,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:18:02,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781376283] [2023-08-24 18:18:02,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:18:02,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:18:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:18:02,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:18:02,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:18:02,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781376283] [2023-08-24 18:18:02,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781376283] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:18:02,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:18:02,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 18:18:02,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326405217] [2023-08-24 18:18:02,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:18:02,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 18:18:02,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:18:02,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 18:18:02,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-24 18:18:02,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 388 [2023-08-24 18:18:02,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 220 transitions, 1448 flow. Second operand has 10 states, 10 states have (on average 179.7) internal successors, (1797), 10 states have internal predecessors, (1797), 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) [2023-08-24 18:18:02,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:18:02,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 388 [2023-08-24 18:18:02,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:18:27,066 INFO L124 PetriNetUnfolderBase]: 129521/226068 cut-off events. [2023-08-24 18:18:27,067 INFO L125 PetriNetUnfolderBase]: For 632960/633646 co-relation queries the response was YES. [2023-08-24 18:18:28,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788560 conditions, 226068 events. 129521/226068 cut-off events. For 632960/633646 co-relation queries the response was YES. Maximal size of possible extension queue 3988. Compared 2260536 event pairs, 42248 based on Foata normal form. 2582/211718 useless extension candidates. Maximal degree in co-relation 787410. Up to 81670 conditions per place. [2023-08-24 18:18:29,497 INFO L140 encePairwiseOnDemand]: 375/388 looper letters, 555 selfloop transitions, 59 changer transitions 0/650 dead transitions. [2023-08-24 18:18:29,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 650 transitions, 4480 flow [2023-08-24 18:18:29,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 18:18:29,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 18:18:29,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2162 transitions. [2023-08-24 18:18:29,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5572164948453608 [2023-08-24 18:18:29,502 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2162 transitions. [2023-08-24 18:18:29,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2162 transitions. [2023-08-24 18:18:29,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:18:29,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2162 transitions. [2023-08-24 18:18:29,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 216.2) internal successors, (2162), 10 states have internal predecessors, (2162), 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) [2023-08-24 18:18:29,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 388.0) internal successors, (4268), 11 states have internal predecessors, (4268), 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) [2023-08-24 18:18:29,513 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 388.0) internal successors, (4268), 11 states have internal predecessors, (4268), 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) [2023-08-24 18:18:29,513 INFO L175 Difference]: Start difference. First operand has 140 places, 220 transitions, 1448 flow. Second operand 10 states and 2162 transitions. [2023-08-24 18:18:29,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 650 transitions, 4480 flow [2023-08-24 18:19:45,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 650 transitions, 4395 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-08-24 18:19:45,189 INFO L231 Difference]: Finished difference. Result has 152 places, 245 transitions, 1930 flow [2023-08-24 18:19:45,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=1413, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1930, PETRI_PLACES=152, PETRI_TRANSITIONS=245} [2023-08-24 18:19:45,190 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 63 predicate places. [2023-08-24 18:19:45,190 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 245 transitions, 1930 flow [2023-08-24 18:19:45,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 179.7) internal successors, (1797), 10 states have internal predecessors, (1797), 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) [2023-08-24 18:19:45,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:19:45,191 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] [2023-08-24 18:19:45,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 18:19:45,191 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-24 18:19:45,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:19:45,192 INFO L85 PathProgramCache]: Analyzing trace with hash 762984089, now seen corresponding path program 1 times [2023-08-24 18:19:45,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:19:45,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384899296] [2023-08-24 18:19:45,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:19:45,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:19:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:19:45,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:19:45,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:19:45,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384899296] [2023-08-24 18:19:45,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384899296] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:19:45,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:19:45,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 18:19:45,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977715572] [2023-08-24 18:19:45,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:19:45,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 18:19:45,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:19:45,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 18:19:45,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-08-24 18:19:45,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 388 [2023-08-24 18:19:45,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 245 transitions, 1930 flow. Second operand has 10 states, 10 states have (on average 174.7) internal successors, (1747), 10 states have internal predecessors, (1747), 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) [2023-08-24 18:19:45,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:19:45,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 388 [2023-08-24 18:19:45,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand