/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/pthread/stack-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 21:56:27,533 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 21:56:27,598 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 21:56:27,602 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 21:56:27,602 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 21:56:27,626 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 21:56:27,627 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 21:56:27,630 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 21:56:27,630 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 21:56:27,633 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 21:56:27,633 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 21:56:27,633 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 21:56:27,634 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 21:56:27,634 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 21:56:27,635 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 21:56:27,635 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 21:56:27,635 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 21:56:27,635 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 21:56:27,635 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 21:56:27,635 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 21:56:27,635 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 21:56:27,636 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 21:56:27,636 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 21:56:27,636 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 21:56:27,637 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 21:56:27,637 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 21:56:27,637 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 21:56:27,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 21:56:27,637 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 21:56:27,637 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 21:56:27,638 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 21:56:27,638 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 21:56:27,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 21:56:27,638 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 21:56:27,638 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 21:56:27,638 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 21:56:27,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 21:56:27,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 21:56:27,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 21:56:27,861 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 21:56:27,862 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 21:56:27,862 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-2.i [2023-08-25 21:56:28,829 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 21:56:29,108 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 21:56:29,109 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i [2023-08-25 21:56:29,123 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/707744117/fbab006a5b584992a562e93564601cfb/FLAG40309017f [2023-08-25 21:56:29,136 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/707744117/fbab006a5b584992a562e93564601cfb [2023-08-25 21:56:29,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 21:56:29,140 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 21:56:29,142 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 21:56:29,142 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 21:56:29,144 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 21:56:29,145 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 09:56:29" (1/1) ... [2023-08-25 21:56:29,146 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65170d20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:56:29, skipping insertion in model container [2023-08-25 21:56:29,146 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 09:56:29" (1/1) ... [2023-08-25 21:56:29,188 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 21:56:29,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 21:56:29,554 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 21:56:29,577 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-25 21:56:29,578 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-25 21:56:29,583 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [753] [2023-08-25 21:56:29,615 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 21:56:29,663 INFO L206 MainTranslator]: Completed translation [2023-08-25 21:56:29,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:56:29 WrapperNode [2023-08-25 21:56:29,664 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 21:56:29,665 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 21:56:29,665 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 21:56:29,665 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 21:56:29,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:56:29" (1/1) ... [2023-08-25 21:56:29,695 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:56:29" (1/1) ... [2023-08-25 21:56:29,721 INFO L138 Inliner]: procedures = 277, calls = 45, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 214 [2023-08-25 21:56:29,722 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 21:56:29,722 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 21:56:29,722 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 21:56:29,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 21:56:29,728 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:56:29" (1/1) ... [2023-08-25 21:56:29,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:56:29" (1/1) ... [2023-08-25 21:56:29,741 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:56:29" (1/1) ... [2023-08-25 21:56:29,742 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:56:29" (1/1) ... [2023-08-25 21:56:29,748 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:56:29" (1/1) ... [2023-08-25 21:56:29,754 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:56:29" (1/1) ... [2023-08-25 21:56:29,756 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:56:29" (1/1) ... [2023-08-25 21:56:29,757 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:56:29" (1/1) ... [2023-08-25 21:56:29,759 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 21:56:29,759 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 21:56:29,759 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 21:56:29,759 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 21:56:29,760 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:56:29" (1/1) ... [2023-08-25 21:56:29,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 21:56:29,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:56:29,780 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 21:56:29,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 21:56:29,807 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-25 21:56:29,808 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-25 21:56:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-25 21:56:29,808 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-25 21:56:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 21:56:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 21:56:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 21:56:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 21:56:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 21:56:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 21:56:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 21:56:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 21:56:29,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 21:56:29,810 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 21:56:29,919 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 21:56:29,921 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 21:56:30,123 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 21:56:30,130 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 21:56:30,130 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 21:56:30,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 09:56:30 BoogieIcfgContainer [2023-08-25 21:56:30,131 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 21:56:30,133 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 21:56:30,133 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 21:56:30,134 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 21:56:30,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 09:56:29" (1/3) ... [2023-08-25 21:56:30,135 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa5d5cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 09:56:30, skipping insertion in model container [2023-08-25 21:56:30,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:56:29" (2/3) ... [2023-08-25 21:56:30,135 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa5d5cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 09:56:30, skipping insertion in model container [2023-08-25 21:56:30,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 09:56:30" (3/3) ... [2023-08-25 21:56:30,136 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-2.i [2023-08-25 21:56:30,146 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 21:56:30,146 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-25 21:56:30,146 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 21:56:30,232 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 21:56:30,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 232 transitions, 480 flow [2023-08-25 21:56:30,307 INFO L124 PetriNetUnfolderBase]: 12/230 cut-off events. [2023-08-25 21:56:30,307 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 21:56:30,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 230 events. 12/230 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 606 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 184. Up to 3 conditions per place. [2023-08-25 21:56:30,312 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 232 transitions, 480 flow [2023-08-25 21:56:30,316 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 216 places, 221 transitions, 451 flow [2023-08-25 21:56:30,318 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 21:56:30,323 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 216 places, 221 transitions, 451 flow [2023-08-25 21:56:30,324 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 216 places, 221 transitions, 451 flow [2023-08-25 21:56:30,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 221 transitions, 451 flow [2023-08-25 21:56:30,354 INFO L124 PetriNetUnfolderBase]: 12/221 cut-off events. [2023-08-25 21:56:30,354 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 21:56:30,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 221 events. 12/221 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 546 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 184. Up to 3 conditions per place. [2023-08-25 21:56:30,361 INFO L119 LiptonReduction]: Number of co-enabled transitions 19012 [2023-08-25 21:56:33,491 INFO L134 LiptonReduction]: Checked pairs total: 66292 [2023-08-25 21:56:33,491 INFO L136 LiptonReduction]: Total number of compositions: 167 [2023-08-25 21:56:33,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 21:56:33,504 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;@6527b569, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 21:56:33,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-08-25 21:56:33,506 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 21:56:33,506 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-25 21:56:33,506 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 21:56:33,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:56:33,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-25 21:56:33,507 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)] === [2023-08-25 21:56:33,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:56:33,510 INFO L85 PathProgramCache]: Analyzing trace with hash 312439696, now seen corresponding path program 1 times [2023-08-25 21:56:33,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:56:33,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341174448] [2023-08-25 21:56:33,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:56:33,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:56:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:56:33,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:56:33,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:56:33,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341174448] [2023-08-25 21:56:33,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341174448] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:56:33,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:56:33,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:56:33,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372046217] [2023-08-25 21:56:33,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:56:33,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:56:33,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:56:33,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:56:33,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:56:33,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 399 [2023-08-25 21:56:33,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 86 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:33,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:56:33,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 399 [2023-08-25 21:56:33,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:56:34,193 INFO L124 PetriNetUnfolderBase]: 2400/4911 cut-off events. [2023-08-25 21:56:34,194 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2023-08-25 21:56:34,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9072 conditions, 4911 events. 2400/4911 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 30853 event pairs, 790 based on Foata normal form. 0/4155 useless extension candidates. Maximal degree in co-relation 8504. Up to 2674 conditions per place. [2023-08-25 21:56:34,217 INFO L140 encePairwiseOnDemand]: 379/399 looper letters, 90 selfloop transitions, 14 changer transitions 0/134 dead transitions. [2023-08-25 21:56:34,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 134 transitions, 491 flow [2023-08-25 21:56:34,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:56:34,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:56:34,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 695 transitions. [2023-08-25 21:56:34,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806182121971596 [2023-08-25 21:56:34,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 695 transitions. [2023-08-25 21:56:34,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 695 transitions. [2023-08-25 21:56:34,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:56:34,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 695 transitions. [2023-08-25 21:56:34,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:34,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:34,239 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:34,240 INFO L175 Difference]: Start difference. First operand has 88 places, 86 transitions, 181 flow. Second operand 3 states and 695 transitions. [2023-08-25 21:56:34,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 134 transitions, 491 flow [2023-08-25 21:56:34,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 134 transitions, 483 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-25 21:56:34,248 INFO L231 Difference]: Finished difference. Result has 89 places, 100 transitions, 300 flow [2023-08-25 21:56:34,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=89, PETRI_TRANSITIONS=100} [2023-08-25 21:56:34,251 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 1 predicate places. [2023-08-25 21:56:34,251 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 100 transitions, 300 flow [2023-08-25 21:56:34,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:34,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:56:34,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:56:34,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 21:56:34,252 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)] === [2023-08-25 21:56:34,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:56:34,253 INFO L85 PathProgramCache]: Analyzing trace with hash -33101586, now seen corresponding path program 1 times [2023-08-25 21:56:34,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:56:34,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200408697] [2023-08-25 21:56:34,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:56:34,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:56:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:56:34,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:56:34,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:56:34,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200408697] [2023-08-25 21:56:34,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200408697] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:56:34,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:56:34,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:56:34,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132193459] [2023-08-25 21:56:34,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:56:34,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:56:34,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:56:34,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:56:34,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:56:34,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 399 [2023-08-25 21:56:34,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 100 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:34,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:56:34,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 399 [2023-08-25 21:56:34,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:56:34,719 INFO L124 PetriNetUnfolderBase]: 3583/7636 cut-off events. [2023-08-25 21:56:34,719 INFO L125 PetriNetUnfolderBase]: For 1144/1188 co-relation queries the response was YES. [2023-08-25 21:56:34,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15379 conditions, 7636 events. 3583/7636 cut-off events. For 1144/1188 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 56355 event pairs, 1076 based on Foata normal form. 0/6608 useless extension candidates. Maximal degree in co-relation 14730. Up to 3188 conditions per place. [2023-08-25 21:56:34,755 INFO L140 encePairwiseOnDemand]: 395/399 looper letters, 95 selfloop transitions, 3 changer transitions 0/146 dead transitions. [2023-08-25 21:56:34,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 146 transitions, 631 flow [2023-08-25 21:56:34,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:56:34,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:56:34,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 724 transitions. [2023-08-25 21:56:34,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6048454469507101 [2023-08-25 21:56:34,757 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 724 transitions. [2023-08-25 21:56:34,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 724 transitions. [2023-08-25 21:56:34,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:56:34,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 724 transitions. [2023-08-25 21:56:34,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.33333333333334) internal successors, (724), 3 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:34,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:34,761 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:34,761 INFO L175 Difference]: Start difference. First operand has 89 places, 100 transitions, 300 flow. Second operand 3 states and 724 transitions. [2023-08-25 21:56:34,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 146 transitions, 631 flow [2023-08-25 21:56:34,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 146 transitions, 589 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 21:56:34,770 INFO L231 Difference]: Finished difference. Result has 91 places, 103 transitions, 298 flow [2023-08-25 21:56:34,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=91, PETRI_TRANSITIONS=103} [2023-08-25 21:56:34,771 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 3 predicate places. [2023-08-25 21:56:34,771 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 103 transitions, 298 flow [2023-08-25 21:56:34,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:34,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:56:34,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:56:34,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 21:56:34,772 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err5ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-25 21:56:34,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:56:34,772 INFO L85 PathProgramCache]: Analyzing trace with hash -393135466, now seen corresponding path program 1 times [2023-08-25 21:56:34,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:56:34,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317513579] [2023-08-25 21:56:34,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:56:34,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:56:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:56:34,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:56:34,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:56:34,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317513579] [2023-08-25 21:56:34,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317513579] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:56:34,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:56:34,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:56:34,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065476862] [2023-08-25 21:56:34,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:56:34,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:56:34,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:56:34,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:56:34,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:56:34,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 399 [2023-08-25 21:56:34,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 103 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:34,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:56:34,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 399 [2023-08-25 21:56:34,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:56:35,500 INFO L124 PetriNetUnfolderBase]: 4938/10799 cut-off events. [2023-08-25 21:56:35,501 INFO L125 PetriNetUnfolderBase]: For 835/849 co-relation queries the response was YES. [2023-08-25 21:56:35,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21503 conditions, 10799 events. 4938/10799 cut-off events. For 835/849 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 84328 event pairs, 2014 based on Foata normal form. 0/9481 useless extension candidates. Maximal degree in co-relation 20847. Up to 5661 conditions per place. [2023-08-25 21:56:35,546 INFO L140 encePairwiseOnDemand]: 394/399 looper letters, 84 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2023-08-25 21:56:35,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 137 transitions, 561 flow [2023-08-25 21:56:35,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:56:35,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:56:35,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2023-08-25 21:56:35,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5889724310776943 [2023-08-25 21:56:35,548 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2023-08-25 21:56:35,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2023-08-25 21:56:35,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:56:35,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2023-08-25 21:56:35,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:35,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:35,553 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:35,553 INFO L175 Difference]: Start difference. First operand has 91 places, 103 transitions, 298 flow. Second operand 3 states and 705 transitions. [2023-08-25 21:56:35,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 137 transitions, 561 flow [2023-08-25 21:56:35,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 137 transitions, 553 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 21:56:35,558 INFO L231 Difference]: Finished difference. Result has 93 places, 105 transitions, 316 flow [2023-08-25 21:56:35,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=93, PETRI_TRANSITIONS=105} [2023-08-25 21:56:35,559 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2023-08-25 21:56:35,561 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 105 transitions, 316 flow [2023-08-25 21:56:35,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:35,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:56:35,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:56:35,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 21:56:35,562 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)] === [2023-08-25 21:56:35,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:56:35,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1948149667, now seen corresponding path program 1 times [2023-08-25 21:56:35,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:56:35,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866828173] [2023-08-25 21:56:35,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:56:35,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:56:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:56:35,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:56:35,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:56:35,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866828173] [2023-08-25 21:56:35,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866828173] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:56:35,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:56:35,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 21:56:35,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321234824] [2023-08-25 21:56:35,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:56:35,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:56:35,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:56:35,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:56:35,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 21:56:35,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 399 [2023-08-25 21:56:35,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 105 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 190.66666666666666) internal successors, (1144), 6 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:35,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:56:35,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 399 [2023-08-25 21:56:35,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:56:40,422 INFO L124 PetriNetUnfolderBase]: 46693/78706 cut-off events. [2023-08-25 21:56:40,422 INFO L125 PetriNetUnfolderBase]: For 14113/14653 co-relation queries the response was YES. [2023-08-25 21:56:40,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170608 conditions, 78706 events. 46693/78706 cut-off events. For 14113/14653 co-relation queries the response was YES. Maximal size of possible extension queue 1503. Compared 672459 event pairs, 14425 based on Foata normal form. 7/67463 useless extension candidates. Maximal degree in co-relation 169446. Up to 41240 conditions per place. [2023-08-25 21:56:40,884 INFO L140 encePairwiseOnDemand]: 389/399 looper letters, 273 selfloop transitions, 21 changer transitions 0/328 dead transitions. [2023-08-25 21:56:40,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 328 transitions, 1543 flow [2023-08-25 21:56:40,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 21:56:40,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 21:56:40,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1379 transitions. [2023-08-25 21:56:40,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5760233918128655 [2023-08-25 21:56:40,889 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1379 transitions. [2023-08-25 21:56:40,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1379 transitions. [2023-08-25 21:56:40,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:56:40,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1379 transitions. [2023-08-25 21:56:40,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 229.83333333333334) internal successors, (1379), 6 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:40,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:40,896 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:40,896 INFO L175 Difference]: Start difference. First operand has 93 places, 105 transitions, 316 flow. Second operand 6 states and 1379 transitions. [2023-08-25 21:56:40,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 328 transitions, 1543 flow [2023-08-25 21:56:40,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 328 transitions, 1521 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 21:56:40,912 INFO L231 Difference]: Finished difference. Result has 101 places, 125 transitions, 452 flow [2023-08-25 21:56:40,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=452, PETRI_PLACES=101, PETRI_TRANSITIONS=125} [2023-08-25 21:56:40,913 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 13 predicate places. [2023-08-25 21:56:40,913 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 125 transitions, 452 flow [2023-08-25 21:56:40,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.66666666666666) internal successors, (1144), 6 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:40,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:56:40,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:56:40,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 21:56:40,914 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-25 21:56:40,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:56:40,914 INFO L85 PathProgramCache]: Analyzing trace with hash 2138609058, now seen corresponding path program 1 times [2023-08-25 21:56:40,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:56:40,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616588705] [2023-08-25 21:56:40,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:56:40,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:56:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:56:40,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:56:40,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:56:40,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616588705] [2023-08-25 21:56:40,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616588705] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:56:40,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:56:40,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:56:40,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451064877] [2023-08-25 21:56:40,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:56:40,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:56:40,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:56:40,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:56:40,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:56:40,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 399 [2023-08-25 21:56:40,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 125 transitions, 452 flow. Second operand has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:40,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:56:40,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 399 [2023-08-25 21:56:40,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:56:43,254 INFO L124 PetriNetUnfolderBase]: 13484/33394 cut-off events. [2023-08-25 21:56:43,254 INFO L125 PetriNetUnfolderBase]: For 6073/6441 co-relation queries the response was YES. [2023-08-25 21:56:43,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70359 conditions, 33394 events. 13484/33394 cut-off events. For 6073/6441 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 353418 event pairs, 6385 based on Foata normal form. 0/28339 useless extension candidates. Maximal degree in co-relation 69755. Up to 22036 conditions per place. [2023-08-25 21:56:43,406 INFO L140 encePairwiseOnDemand]: 396/399 looper letters, 80 selfloop transitions, 2 changer transitions 0/151 dead transitions. [2023-08-25 21:56:43,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 151 transitions, 697 flow [2023-08-25 21:56:43,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:56:43,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:56:43,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 710 transitions. [2023-08-25 21:56:43,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5931495405179615 [2023-08-25 21:56:43,409 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 710 transitions. [2023-08-25 21:56:43,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 710 transitions. [2023-08-25 21:56:43,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:56:43,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 710 transitions. [2023-08-25 21:56:43,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:43,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:43,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:43,413 INFO L175 Difference]: Start difference. First operand has 101 places, 125 transitions, 452 flow. Second operand 3 states and 710 transitions. [2023-08-25 21:56:43,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 151 transitions, 697 flow [2023-08-25 21:56:43,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 151 transitions, 697 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 21:56:43,422 INFO L231 Difference]: Finished difference. Result has 104 places, 126 transitions, 464 flow [2023-08-25 21:56:43,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=104, PETRI_TRANSITIONS=126} [2023-08-25 21:56:43,423 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 16 predicate places. [2023-08-25 21:56:43,423 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 126 transitions, 464 flow [2023-08-25 21:56:43,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:43,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:56:43,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:56:43,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 21:56:43,423 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)] === [2023-08-25 21:56:43,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:56:43,424 INFO L85 PathProgramCache]: Analyzing trace with hash -895997480, now seen corresponding path program 1 times [2023-08-25 21:56:43,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:56:43,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303655423] [2023-08-25 21:56:43,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:56:43,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:56:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:56:43,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:56:43,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:56:43,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303655423] [2023-08-25 21:56:43,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303655423] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:56:43,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:56:43,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 21:56:43,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478208220] [2023-08-25 21:56:43,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:56:43,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:56:43,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:56:43,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:56:43,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 21:56:43,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 399 [2023-08-25 21:56:43,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 126 transitions, 464 flow. Second operand has 6 states, 6 states have (on average 189.16666666666666) internal successors, (1135), 6 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:43,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:56:43,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 399 [2023-08-25 21:56:43,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:56:49,919 INFO L124 PetriNetUnfolderBase]: 52835/92709 cut-off events. [2023-08-25 21:56:49,919 INFO L125 PetriNetUnfolderBase]: For 54680/54841 co-relation queries the response was YES. [2023-08-25 21:56:50,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238653 conditions, 92709 events. 52835/92709 cut-off events. For 54680/54841 co-relation queries the response was YES. Maximal size of possible extension queue 1475. Compared 816391 event pairs, 28158 based on Foata normal form. 0/83449 useless extension candidates. Maximal degree in co-relation 237751. Up to 75519 conditions per place. [2023-08-25 21:56:50,388 INFO L140 encePairwiseOnDemand]: 385/399 looper letters, 188 selfloop transitions, 44 changer transitions 0/265 dead transitions. [2023-08-25 21:56:50,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 265 transitions, 1368 flow [2023-08-25 21:56:50,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 21:56:50,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 21:56:50,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1313 transitions. [2023-08-25 21:56:50,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484544695071011 [2023-08-25 21:56:50,391 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1313 transitions. [2023-08-25 21:56:50,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1313 transitions. [2023-08-25 21:56:50,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:56:50,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1313 transitions. [2023-08-25 21:56:50,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 218.83333333333334) internal successors, (1313), 6 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:50,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:50,396 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:50,396 INFO L175 Difference]: Start difference. First operand has 104 places, 126 transitions, 464 flow. Second operand 6 states and 1313 transitions. [2023-08-25 21:56:50,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 265 transitions, 1368 flow [2023-08-25 21:56:50,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 265 transitions, 1366 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 21:56:50,647 INFO L231 Difference]: Finished difference. Result has 112 places, 165 transitions, 768 flow [2023-08-25 21:56:50,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=768, PETRI_PLACES=112, PETRI_TRANSITIONS=165} [2023-08-25 21:56:50,647 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 24 predicate places. [2023-08-25 21:56:50,647 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 165 transitions, 768 flow [2023-08-25 21:56:50,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.16666666666666) internal successors, (1135), 6 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:50,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:56:50,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:56:50,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 21:56:50,648 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)] === [2023-08-25 21:56:50,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:56:50,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1426041745, now seen corresponding path program 1 times [2023-08-25 21:56:50,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:56:50,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036373063] [2023-08-25 21:56:50,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:56:50,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:56:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:56:50,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:56:50,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:56:50,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036373063] [2023-08-25 21:56:50,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036373063] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:56:50,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:56:50,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 21:56:50,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379529491] [2023-08-25 21:56:50,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:56:50,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:56:50,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:56:50,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:56:50,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:56:50,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 399 [2023-08-25 21:56:50,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 165 transitions, 768 flow. Second operand has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:50,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:56:50,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 399 [2023-08-25 21:56:50,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:56:53,760 INFO L124 PetriNetUnfolderBase]: 18316/43047 cut-off events. [2023-08-25 21:56:53,760 INFO L125 PetriNetUnfolderBase]: For 20270/22148 co-relation queries the response was YES. [2023-08-25 21:56:53,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103712 conditions, 43047 events. 18316/43047 cut-off events. For 20270/22148 co-relation queries the response was YES. Maximal size of possible extension queue 1035. Compared 457234 event pairs, 7644 based on Foata normal form. 550/39179 useless extension candidates. Maximal degree in co-relation 97361. Up to 24413 conditions per place. [2023-08-25 21:56:54,029 INFO L140 encePairwiseOnDemand]: 396/399 looper letters, 96 selfloop transitions, 2 changer transitions 0/206 dead transitions. [2023-08-25 21:56:54,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 206 transitions, 1116 flow [2023-08-25 21:56:54,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:56:54,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:56:54,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 715 transitions. [2023-08-25 21:56:54,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5973266499582289 [2023-08-25 21:56:54,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 715 transitions. [2023-08-25 21:56:54,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 715 transitions. [2023-08-25 21:56:54,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:56:54,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 715 transitions. [2023-08-25 21:56:54,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:54,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:54,034 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:54,035 INFO L175 Difference]: Start difference. First operand has 112 places, 165 transitions, 768 flow. Second operand 3 states and 715 transitions. [2023-08-25 21:56:54,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 206 transitions, 1116 flow [2023-08-25 21:56:54,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 206 transitions, 1092 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-08-25 21:56:54,196 INFO L231 Difference]: Finished difference. Result has 115 places, 166 transitions, 756 flow [2023-08-25 21:56:54,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=756, PETRI_PLACES=115, PETRI_TRANSITIONS=166} [2023-08-25 21:56:54,196 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 27 predicate places. [2023-08-25 21:56:54,196 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 166 transitions, 756 flow [2023-08-25 21:56:54,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:54,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:56:54,197 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] [2023-08-25 21:56:54,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 21:56:54,197 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)] === [2023-08-25 21:56:54,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:56:54,198 INFO L85 PathProgramCache]: Analyzing trace with hash -2085473312, now seen corresponding path program 1 times [2023-08-25 21:56:54,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:56:54,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575617131] [2023-08-25 21:56:54,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:56:54,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:56:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:56:54,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:56:54,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:56:54,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575617131] [2023-08-25 21:56:54,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575617131] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:56:54,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:56:54,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 21:56:54,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806756283] [2023-08-25 21:56:54,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:56:54,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 21:56:54,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:56:54,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 21:56:54,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-08-25 21:56:54,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 399 [2023-08-25 21:56:54,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 166 transitions, 756 flow. Second operand has 9 states, 9 states have (on average 179.88888888888889) internal successors, (1619), 9 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:56:54,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:56:54,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 399 [2023-08-25 21:56:54,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:57:03,953 INFO L124 PetriNetUnfolderBase]: 69839/121816 cut-off events. [2023-08-25 21:57:03,953 INFO L125 PetriNetUnfolderBase]: For 94028/94456 co-relation queries the response was YES. [2023-08-25 21:57:04,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348669 conditions, 121816 events. 69839/121816 cut-off events. For 94028/94456 co-relation queries the response was YES. Maximal size of possible extension queue 2150. Compared 1127407 event pairs, 23644 based on Foata normal form. 2281/113040 useless extension candidates. Maximal degree in co-relation 347283. Up to 52644 conditions per place. [2023-08-25 21:57:04,865 INFO L140 encePairwiseOnDemand]: 387/399 looper letters, 425 selfloop transitions, 31 changer transitions 0/489 dead transitions. [2023-08-25 21:57:04,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 489 transitions, 2865 flow [2023-08-25 21:57:04,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 21:57:04,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 21:57:04,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1725 transitions. [2023-08-25 21:57:04,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404135338345865 [2023-08-25 21:57:04,868 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1725 transitions. [2023-08-25 21:57:04,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1725 transitions. [2023-08-25 21:57:04,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:57:04,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1725 transitions. [2023-08-25 21:57:04,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 215.625) internal successors, (1725), 8 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:57:04,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 399.0) internal successors, (3591), 9 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:57:04,874 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 399.0) internal successors, (3591), 9 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:57:04,874 INFO L175 Difference]: Start difference. First operand has 115 places, 166 transitions, 756 flow. Second operand 8 states and 1725 transitions. [2023-08-25 21:57:04,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 489 transitions, 2865 flow [2023-08-25 21:57:07,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 489 transitions, 2854 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 21:57:07,861 INFO L231 Difference]: Finished difference. Result has 124 places, 176 transitions, 954 flow [2023-08-25 21:57:07,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=954, PETRI_PLACES=124, PETRI_TRANSITIONS=176} [2023-08-25 21:57:07,862 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 36 predicate places. [2023-08-25 21:57:07,862 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 176 transitions, 954 flow [2023-08-25 21:57:07,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 179.88888888888889) internal successors, (1619), 9 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:57:07,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:57:07,863 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] [2023-08-25 21:57:07,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 21:57:07,863 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)] === [2023-08-25 21:57:07,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:57:07,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1312452550, now seen corresponding path program 2 times [2023-08-25 21:57:07,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:57:07,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790575585] [2023-08-25 21:57:07,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:57:07,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:57:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:57:08,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:57:08,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:57:08,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790575585] [2023-08-25 21:57:08,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790575585] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:57:08,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:57:08,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 21:57:08,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958530487] [2023-08-25 21:57:08,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:57:08,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 21:57:08,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:57:08,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 21:57:08,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-25 21:57:08,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 399 [2023-08-25 21:57:08,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 176 transitions, 954 flow. Second operand has 9 states, 9 states have (on average 179.88888888888889) internal successors, (1619), 9 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:57:08,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:57:08,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 399 [2023-08-25 21:57:08,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:57:20,746 INFO L124 PetriNetUnfolderBase]: 93834/160890 cut-off events. [2023-08-25 21:57:20,746 INFO L125 PetriNetUnfolderBase]: For 201289/201878 co-relation queries the response was YES. [2023-08-25 21:57:21,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500870 conditions, 160890 events. 93834/160890 cut-off events. For 201289/201878 co-relation queries the response was YES. Maximal size of possible extension queue 2740. Compared 1503417 event pairs, 21554 based on Foata normal form. 2594/149121 useless extension candidates. Maximal degree in co-relation 499791. Up to 57075 conditions per place. [2023-08-25 21:57:22,111 INFO L140 encePairwiseOnDemand]: 391/399 looper letters, 460 selfloop transitions, 31 changer transitions 0/524 dead transitions. [2023-08-25 21:57:22,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 524 transitions, 3447 flow [2023-08-25 21:57:22,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 21:57:22,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 21:57:22,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1862 transitions. [2023-08-25 21:57:22,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2023-08-25 21:57:22,115 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1862 transitions. [2023-08-25 21:57:22,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1862 transitions. [2023-08-25 21:57:22,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:57:22,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1862 transitions. [2023-08-25 21:57:22,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 206.88888888888889) internal successors, (1862), 9 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:57:22,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 399.0) internal successors, (3990), 10 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:57:22,122 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 399.0) internal successors, (3990), 10 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:57:22,122 INFO L175 Difference]: Start difference. First operand has 124 places, 176 transitions, 954 flow. Second operand 9 states and 1862 transitions. [2023-08-25 21:57:22,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 524 transitions, 3447 flow [2023-08-25 21:57:27,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 524 transitions, 3410 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 21:57:27,600 INFO L231 Difference]: Finished difference. Result has 134 places, 202 transitions, 1258 flow [2023-08-25 21:57:27,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1258, PETRI_PLACES=134, PETRI_TRANSITIONS=202} [2023-08-25 21:57:27,601 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 46 predicate places. [2023-08-25 21:57:27,601 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 202 transitions, 1258 flow [2023-08-25 21:57:27,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 179.88888888888889) internal successors, (1619), 9 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:57:27,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:57:27,602 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] [2023-08-25 21:57:27,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 21:57:27,602 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)] === [2023-08-25 21:57:27,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:57:27,602 INFO L85 PathProgramCache]: Analyzing trace with hash 503676214, now seen corresponding path program 3 times [2023-08-25 21:57:27,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:57:27,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263847133] [2023-08-25 21:57:27,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:57:27,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:57:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:57:27,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:57:27,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:57:27,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263847133] [2023-08-25 21:57:27,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263847133] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:57:27,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:57:27,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 21:57:27,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59689975] [2023-08-25 21:57:27,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:57:27,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 21:57:27,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:57:27,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 21:57:27,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-25 21:57:27,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 399 [2023-08-25 21:57:27,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 202 transitions, 1258 flow. Second operand has 9 states, 9 states have (on average 179.88888888888889) internal successors, (1619), 9 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:57:27,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:57:27,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 399 [2023-08-25 21:57:27,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:57:46,929 INFO L124 PetriNetUnfolderBase]: 120968/209834 cut-off events. [2023-08-25 21:57:46,929 INFO L125 PetriNetUnfolderBase]: For 532819/533633 co-relation queries the response was YES. [2023-08-25 21:57:48,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722748 conditions, 209834 events. 120968/209834 cut-off events. For 532819/533633 co-relation queries the response was YES. Maximal size of possible extension queue 3521. Compared 2055594 event pairs, 38110 based on Foata normal form. 2512/193347 useless extension candidates. Maximal degree in co-relation 721635. Up to 78442 conditions per place. [2023-08-25 21:57:48,674 INFO L140 encePairwiseOnDemand]: 387/399 looper letters, 532 selfloop transitions, 53 changer transitions 0/618 dead transitions. [2023-08-25 21:57:48,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 618 transitions, 4163 flow [2023-08-25 21:57:48,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 21:57:48,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 21:57:48,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1947 transitions. [2023-08-25 21:57:48,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5421888053467001 [2023-08-25 21:57:48,677 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1947 transitions. [2023-08-25 21:57:48,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1947 transitions. [2023-08-25 21:57:48,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:57:48,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1947 transitions. [2023-08-25 21:57:48,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 216.33333333333334) internal successors, (1947), 9 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:57:48,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 399.0) internal successors, (3990), 10 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:57:48,684 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 399.0) internal successors, (3990), 10 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:57:48,684 INFO L175 Difference]: Start difference. First operand has 134 places, 202 transitions, 1258 flow. Second operand 9 states and 1947 transitions. [2023-08-25 21:57:48,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 618 transitions, 4163 flow [2023-08-25 21:58:16,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 618 transitions, 4162 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 21:58:16,254 INFO L231 Difference]: Finished difference. Result has 146 places, 229 transitions, 1774 flow [2023-08-25 21:58:16,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1774, PETRI_PLACES=146, PETRI_TRANSITIONS=229} [2023-08-25 21:58:16,254 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 58 predicate places. [2023-08-25 21:58:16,254 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 229 transitions, 1774 flow [2023-08-25 21:58:16,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 179.88888888888889) internal successors, (1619), 9 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:58:16,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:58:16,255 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] [2023-08-25 21:58:16,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 21:58:16,255 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)] === [2023-08-25 21:58:16,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:58:16,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1018093213, now seen corresponding path program 1 times [2023-08-25 21:58:16,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:58:16,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892020180] [2023-08-25 21:58:16,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:58:16,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:58:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:58:16,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:58:16,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:58:16,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892020180] [2023-08-25 21:58:16,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892020180] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:58:16,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:58:16,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 21:58:16,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59329556] [2023-08-25 21:58:16,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:58:16,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 21:58:16,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:58:16,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 21:58:16,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-25 21:58:16,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 399 [2023-08-25 21:58:16,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 229 transitions, 1774 flow. Second operand has 9 states, 9 states have (on average 174.88888888888889) internal successors, (1574), 9 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:58:16,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:58:16,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 399 [2023-08-25 21:58:16,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:58:39,982 INFO L124 PetriNetUnfolderBase]: 124027/216809 cut-off events. [2023-08-25 21:58:39,982 INFO L125 PetriNetUnfolderBase]: For 847023/847587 co-relation queries the response was YES. [2023-08-25 21:58:41,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803185 conditions, 216809 events. 124027/216809 cut-off events. For 847023/847587 co-relation queries the response was YES. Maximal size of possible extension queue 3413. Compared 2126596 event pairs, 47007 based on Foata normal form. 0/198149 useless extension candidates. Maximal degree in co-relation 802018. Up to 164073 conditions per place. [2023-08-25 21:58:42,294 INFO L140 encePairwiseOnDemand]: 387/399 looper letters, 320 selfloop transitions, 77 changer transitions 0/430 dead transitions. [2023-08-25 21:58:42,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 430 transitions, 3925 flow [2023-08-25 21:58:42,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 21:58:42,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 21:58:42,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1589 transitions. [2023-08-25 21:58:42,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49780701754385964 [2023-08-25 21:58:42,297 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1589 transitions. [2023-08-25 21:58:42,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1589 transitions. [2023-08-25 21:58:42,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:58:42,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1589 transitions. [2023-08-25 21:58:42,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 198.625) internal successors, (1589), 8 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:58:42,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 399.0) internal successors, (3591), 9 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:58:42,302 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 399.0) internal successors, (3591), 9 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:58:42,303 INFO L175 Difference]: Start difference. First operand has 146 places, 229 transitions, 1774 flow. Second operand 8 states and 1589 transitions. [2023-08-25 21:58:42,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 430 transitions, 3925 flow [2023-08-25 21:58:59,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 430 transitions, 3861 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-25 21:58:59,816 INFO L231 Difference]: Finished difference. Result has 153 places, 264 transitions, 2315 flow [2023-08-25 21:58:59,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=1739, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2315, PETRI_PLACES=153, PETRI_TRANSITIONS=264} [2023-08-25 21:58:59,816 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 65 predicate places. [2023-08-25 21:58:59,817 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 264 transitions, 2315 flow [2023-08-25 21:58:59,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 174.88888888888889) internal successors, (1574), 9 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:58:59,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:58:59,817 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] [2023-08-25 21:58:59,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-25 21:58:59,817 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-25 21:58:59,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:58:59,818 INFO L85 PathProgramCache]: Analyzing trace with hash 65534358, now seen corresponding path program 4 times [2023-08-25 21:58:59,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:58:59,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641888647] [2023-08-25 21:58:59,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:58:59,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:58:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:59:00,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:59:00,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:59:00,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641888647] [2023-08-25 21:59:00,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641888647] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:59:00,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:59:00,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 21:59:00,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889478514] [2023-08-25 21:59:00,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:59:00,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 21:59:00,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:59:00,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 21:59:00,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-25 21:59:00,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 399 [2023-08-25 21:59:00,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 264 transitions, 2315 flow. Second operand has 9 states, 9 states have (on average 179.88888888888889) internal successors, (1619), 9 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:00,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:59:00,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 399 [2023-08-25 21:59:00,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand