/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/goblint-regression/28-race_reach_04-munge_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 07:38:47,278 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 07:38:47,362 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 [2023-08-26 07:38:47,367 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 07:38:47,368 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 07:38:47,401 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 07:38:47,401 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 07:38:47,406 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 07:38:47,407 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 07:38:47,410 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 07:38:47,411 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 07:38:47,411 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 07:38:47,411 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 07:38:47,412 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 07:38:47,412 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 07:38:47,413 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 07:38:47,413 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 07:38:47,413 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 07:38:47,413 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 07:38:47,414 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 07:38:47,414 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 07:38:47,415 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 07:38:47,415 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 07:38:47,415 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 07:38:47,416 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 07:38:47,416 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 07:38:47,416 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 07:38:47,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:38:47,417 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 07:38:47,417 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 07:38:47,418 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 07:38:47,418 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 07:38:47,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 07:38:47,418 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 07:38:47,418 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 07:38:47,419 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 07:38:47,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 07:38:47,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 07:38:47,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 07:38:47,730 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 07:38:47,730 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 07:38:47,732 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-08-26 07:38:48,831 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 07:38:49,135 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 07:38:49,136 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-08-26 07:38:49,157 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aad25a4b2/fe1ebf00c81447db89ca0c1e3fd9a706/FLAG7aa229f85 [2023-08-26 07:38:49,169 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aad25a4b2/fe1ebf00c81447db89ca0c1e3fd9a706 [2023-08-26 07:38:49,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 07:38:49,172 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 07:38:49,173 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 07:38:49,173 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 07:38:49,176 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 07:38:49,176 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:38:49" (1/1) ... [2023-08-26 07:38:49,177 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7753ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:38:49, skipping insertion in model container [2023-08-26 07:38:49,177 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:38:49" (1/1) ... [2023-08-26 07:38:49,212 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 07:38:49,490 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:38:49,507 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 07:38:49,536 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 07:38:49,537 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 07:38:49,557 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:38:49,601 INFO L206 MainTranslator]: Completed translation [2023-08-26 07:38:49,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:38:49 WrapperNode [2023-08-26 07:38:49,602 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 07:38:49,603 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 07:38:49,603 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 07:38:49,603 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 07:38:49,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:38:49" (1/1) ... [2023-08-26 07:38:49,638 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:38:49" (1/1) ... [2023-08-26 07:38:49,676 INFO L138 Inliner]: procedures = 172, calls = 38, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 250 [2023-08-26 07:38:49,677 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 07:38:49,678 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 07:38:49,678 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 07:38:49,679 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 07:38:49,686 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:38:49" (1/1) ... [2023-08-26 07:38:49,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:38:49" (1/1) ... [2023-08-26 07:38:49,700 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:38:49" (1/1) ... [2023-08-26 07:38:49,701 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:38:49" (1/1) ... [2023-08-26 07:38:49,708 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:38:49" (1/1) ... [2023-08-26 07:38:49,732 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:38:49" (1/1) ... [2023-08-26 07:38:49,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:38:49" (1/1) ... [2023-08-26 07:38:49,735 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:38:49" (1/1) ... [2023-08-26 07:38:49,739 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 07:38:49,739 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 07:38:49,740 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 07:38:49,740 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 07:38:49,740 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:38:49" (1/1) ... [2023-08-26 07:38:49,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:38:49,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:38:49,783 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) [2023-08-26 07:38:49,809 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 [2023-08-26 07:38:49,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 07:38:49,828 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-26 07:38:49,828 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-26 07:38:49,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 07:38:49,829 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 07:38:49,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 07:38:49,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 07:38:49,829 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-26 07:38:49,829 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-26 07:38:49,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 07:38:49,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 07:38:49,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 07:38:49,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 07:38:49,832 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 07:38:49,991 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 07:38:49,993 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 07:38:50,420 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 07:38:50,428 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 07:38:50,428 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-26 07:38:50,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:38:50 BoogieIcfgContainer [2023-08-26 07:38:50,431 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 07:38:50,432 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 07:38:50,433 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 07:38:50,435 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 07:38:50,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 07:38:49" (1/3) ... [2023-08-26 07:38:50,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29787f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:38:50, skipping insertion in model container [2023-08-26 07:38:50,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:38:49" (2/3) ... [2023-08-26 07:38:50,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29787f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:38:50, skipping insertion in model container [2023-08-26 07:38:50,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:38:50" (3/3) ... [2023-08-26 07:38:50,438 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2023-08-26 07:38:50,453 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 07:38:50,454 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-26 07:38:50,454 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 07:38:50,524 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 07:38:50,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 262 transitions, 546 flow [2023-08-26 07:38:50,697 INFO L124 PetriNetUnfolderBase]: 61/489 cut-off events. [2023-08-26 07:38:50,697 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-26 07:38:50,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 489 events. 61/489 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2426 event pairs, 0 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 266. Up to 8 conditions per place. [2023-08-26 07:38:50,725 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 262 transitions, 546 flow [2023-08-26 07:38:50,734 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 262 transitions, 546 flow [2023-08-26 07:38:50,737 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:38:50,744 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 233 places, 262 transitions, 546 flow [2023-08-26 07:38:50,746 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 233 places, 262 transitions, 546 flow [2023-08-26 07:38:50,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 262 transitions, 546 flow [2023-08-26 07:38:50,818 INFO L124 PetriNetUnfolderBase]: 61/489 cut-off events. [2023-08-26 07:38:50,818 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-26 07:38:50,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 489 events. 61/489 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2426 event pairs, 0 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 266. Up to 8 conditions per place. [2023-08-26 07:38:50,844 INFO L119 LiptonReduction]: Number of co-enabled transitions 30954 [2023-08-26 07:38:55,091 INFO L134 LiptonReduction]: Checked pairs total: 85872 [2023-08-26 07:38:55,091 INFO L136 LiptonReduction]: Total number of compositions: 185 [2023-08-26 07:38:55,104 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:38:55,110 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;@65ef901f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:38:55,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-08-26 07:38:55,113 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:38:55,113 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-26 07:38:55,113 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:38:55,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:38:55,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 07:38:55,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t1_funErr3ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr4ASSERT_VIOLATIONDATA_RACE, t1_funErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 07:38:55,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:38:55,119 INFO L85 PathProgramCache]: Analyzing trace with hash 31608267, now seen corresponding path program 1 times [2023-08-26 07:38:55,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:38:55,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751314762] [2023-08-26 07:38:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:38:55,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:38:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:38:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:38:55,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:38:55,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751314762] [2023-08-26 07:38:55,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751314762] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:38:55,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:38:55,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:38:55,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367862993] [2023-08-26 07:38:55,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:38:55,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:38:55,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:38:55,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:38:55,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:38:55,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 447 [2023-08-26 07:38:55,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 121 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 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) [2023-08-26 07:38:55,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:38:55,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 447 [2023-08-26 07:38:55,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:38:56,363 INFO L124 PetriNetUnfolderBase]: 5260/10916 cut-off events. [2023-08-26 07:38:56,363 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-08-26 07:38:56,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19065 conditions, 10916 events. 5260/10916 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 94358 event pairs, 4263 based on Foata normal form. 1993/10368 useless extension candidates. Maximal degree in co-relation 18355. Up to 7990 conditions per place. [2023-08-26 07:38:56,436 INFO L140 encePairwiseOnDemand]: 418/447 looper letters, 69 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2023-08-26 07:38:56,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 111 transitions, 386 flow [2023-08-26 07:38:56,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:38:56,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:38:56,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 764 transitions. [2023-08-26 07:38:56,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56972408650261 [2023-08-26 07:38:56,520 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 764 transitions. [2023-08-26 07:38:56,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 764 transitions. [2023-08-26 07:38:56,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:38:56,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 764 transitions. [2023-08-26 07:38:56,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 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) [2023-08-26 07:38:56,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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) [2023-08-26 07:38:56,537 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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) [2023-08-26 07:38:56,539 INFO L175 Difference]: Start difference. First operand has 96 places, 121 transitions, 264 flow. Second operand 3 states and 764 transitions. [2023-08-26 07:38:56,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 111 transitions, 386 flow [2023-08-26 07:38:56,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 111 transitions, 386 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:38:56,551 INFO L231 Difference]: Finished difference. Result has 95 places, 93 transitions, 216 flow [2023-08-26 07:38:56,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=95, PETRI_TRANSITIONS=93} [2023-08-26 07:38:56,556 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -1 predicate places. [2023-08-26 07:38:56,556 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 93 transitions, 216 flow [2023-08-26 07:38:56,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 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) [2023-08-26 07:38:56,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:38:56,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:38:56,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 07:38:56,557 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1_funErr4ASSERT_VIOLATIONDATA_RACE === [t1_funErr3ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr4ASSERT_VIOLATIONDATA_RACE, t1_funErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 07:38:56,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:38:56,558 INFO L85 PathProgramCache]: Analyzing trace with hash -204747608, now seen corresponding path program 1 times [2023-08-26 07:38:56,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:38:56,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62708529] [2023-08-26 07:38:56,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:38:56,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:38:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:38:56,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:38:56,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:38:56,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62708529] [2023-08-26 07:38:56,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62708529] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:38:56,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:38:56,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:38:56,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560791015] [2023-08-26 07:38:56,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:38:56,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:38:56,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:38:56,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:38:56,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:38:56,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 447 [2023-08-26 07:38:56,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 93 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 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) [2023-08-26 07:38:56,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:38:56,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 447 [2023-08-26 07:38:56,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:38:58,366 INFO L124 PetriNetUnfolderBase]: 14284/25156 cut-off events. [2023-08-26 07:38:58,366 INFO L125 PetriNetUnfolderBase]: For 422/422 co-relation queries the response was YES. [2023-08-26 07:38:58,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48064 conditions, 25156 events. 14284/25156 cut-off events. For 422/422 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 195520 event pairs, 6114 based on Foata normal form. 0/18635 useless extension candidates. Maximal degree in co-relation 47882. Up to 11598 conditions per place. [2023-08-26 07:38:58,509 INFO L140 encePairwiseOnDemand]: 425/447 looper letters, 122 selfloop transitions, 16 changer transitions 0/158 dead transitions. [2023-08-26 07:38:58,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 158 transitions, 642 flow [2023-08-26 07:38:58,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:38:58,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:38:58,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 732 transitions. [2023-08-26 07:38:58,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5458612975391499 [2023-08-26 07:38:58,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 732 transitions. [2023-08-26 07:38:58,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 732 transitions. [2023-08-26 07:38:58,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:38:58,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 732 transitions. [2023-08-26 07:38:58,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:38:58,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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) [2023-08-26 07:38:58,520 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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) [2023-08-26 07:38:58,520 INFO L175 Difference]: Start difference. First operand has 95 places, 93 transitions, 216 flow. Second operand 3 states and 732 transitions. [2023-08-26 07:38:58,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 158 transitions, 642 flow [2023-08-26 07:38:58,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 158 transitions, 636 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:38:58,531 INFO L231 Difference]: Finished difference. Result has 97 places, 109 transitions, 352 flow [2023-08-26 07:38:58,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=352, PETRI_PLACES=97, PETRI_TRANSITIONS=109} [2023-08-26 07:38:58,533 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 1 predicate places. [2023-08-26 07:38:58,533 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 109 transitions, 352 flow [2023-08-26 07:38:58,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 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) [2023-08-26 07:38:58,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:38:58,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:38:58,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 07:38:58,538 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1_funErr5ASSERT_VIOLATIONASSERT === [t1_funErr3ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr4ASSERT_VIOLATIONDATA_RACE, t1_funErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 07:38:58,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:38:58,542 INFO L85 PathProgramCache]: Analyzing trace with hash -2052207538, now seen corresponding path program 1 times [2023-08-26 07:38:58,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:38:58,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714998067] [2023-08-26 07:38:58,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:38:58,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:38:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:38:58,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:38:58,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:38:58,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714998067] [2023-08-26 07:38:58,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714998067] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:38:58,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:38:58,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 07:38:58,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358418030] [2023-08-26 07:38:58,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:38:58,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:38:58,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:38:58,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:38:58,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:38:58,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 447 [2023-08-26 07:38:58,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 109 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 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) [2023-08-26 07:38:58,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:38:58,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 447 [2023-08-26 07:38:58,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:39:00,253 INFO L124 PetriNetUnfolderBase]: 11071/21030 cut-off events. [2023-08-26 07:39:00,253 INFO L125 PetriNetUnfolderBase]: For 3337/3345 co-relation queries the response was YES. [2023-08-26 07:39:00,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43755 conditions, 21030 events. 11071/21030 cut-off events. For 3337/3345 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 174805 event pairs, 3998 based on Foata normal form. 0/17322 useless extension candidates. Maximal degree in co-relation 41792. Up to 14406 conditions per place. [2023-08-26 07:39:00,337 INFO L140 encePairwiseOnDemand]: 440/447 looper letters, 102 selfloop transitions, 3 changer transitions 0/148 dead transitions. [2023-08-26 07:39:00,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 148 transitions, 670 flow [2023-08-26 07:39:00,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:39:00,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:39:00,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 746 transitions. [2023-08-26 07:39:00,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5563012677106637 [2023-08-26 07:39:00,340 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 746 transitions. [2023-08-26 07:39:00,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 746 transitions. [2023-08-26 07:39:00,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:39:00,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 746 transitions. [2023-08-26 07:39:00,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 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) [2023-08-26 07:39:00,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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) [2023-08-26 07:39:00,346 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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) [2023-08-26 07:39:00,346 INFO L175 Difference]: Start difference. First operand has 97 places, 109 transitions, 352 flow. Second operand 3 states and 746 transitions. [2023-08-26 07:39:00,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 148 transitions, 670 flow [2023-08-26 07:39:00,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 148 transitions, 634 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:39:00,361 INFO L231 Difference]: Finished difference. Result has 98 places, 111 transitions, 345 flow [2023-08-26 07:39:00,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=345, PETRI_PLACES=98, PETRI_TRANSITIONS=111} [2023-08-26 07:39:00,362 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 2 predicate places. [2023-08-26 07:39:00,362 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 111 transitions, 345 flow [2023-08-26 07:39:00,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 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) [2023-08-26 07:39:00,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:39:00,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:39:00,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 07:39:00,363 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1_funErr1ASSERT_VIOLATIONDATA_RACE === [t1_funErr3ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr4ASSERT_VIOLATIONDATA_RACE, t1_funErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 07:39:00,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:39:00,363 INFO L85 PathProgramCache]: Analyzing trace with hash -360625340, now seen corresponding path program 1 times [2023-08-26 07:39:00,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:39:00,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313857512] [2023-08-26 07:39:00,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:39:00,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:39:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:39:00,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:39:00,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:39:00,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313857512] [2023-08-26 07:39:00,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313857512] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:39:00,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:39:00,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:39:00,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427329770] [2023-08-26 07:39:00,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:39:00,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:39:00,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:39:00,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:39:00,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:39:00,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 447 [2023-08-26 07:39:00,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 111 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 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) [2023-08-26 07:39:00,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:39:00,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 447 [2023-08-26 07:39:00,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:39:01,856 INFO L124 PetriNetUnfolderBase]: 14038/24940 cut-off events. [2023-08-26 07:39:01,857 INFO L125 PetriNetUnfolderBase]: For 4027/4091 co-relation queries the response was YES. [2023-08-26 07:39:01,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54076 conditions, 24940 events. 14038/24940 cut-off events. For 4027/4091 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 195557 event pairs, 10883 based on Foata normal form. 48/19330 useless extension candidates. Maximal degree in co-relation 51827. Up to 20540 conditions per place. [2023-08-26 07:39:01,986 INFO L140 encePairwiseOnDemand]: 438/447 looper letters, 127 selfloop transitions, 11 changer transitions 0/159 dead transitions. [2023-08-26 07:39:01,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 159 transitions, 765 flow [2023-08-26 07:39:01,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:39:01,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:39:01,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 696 transitions. [2023-08-26 07:39:01,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190156599552572 [2023-08-26 07:39:01,988 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 696 transitions. [2023-08-26 07:39:01,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 696 transitions. [2023-08-26 07:39:01,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:39:01,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 696 transitions. [2023-08-26 07:39:01,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:39:01,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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) [2023-08-26 07:39:01,994 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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) [2023-08-26 07:39:01,994 INFO L175 Difference]: Start difference. First operand has 98 places, 111 transitions, 345 flow. Second operand 3 states and 696 transitions. [2023-08-26 07:39:01,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 159 transitions, 765 flow [2023-08-26 07:39:01,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 159 transitions, 762 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:39:02,001 INFO L231 Difference]: Finished difference. Result has 101 places, 120 transitions, 438 flow [2023-08-26 07:39:02,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=438, PETRI_PLACES=101, PETRI_TRANSITIONS=120} [2023-08-26 07:39:02,002 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 5 predicate places. [2023-08-26 07:39:02,002 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 120 transitions, 438 flow [2023-08-26 07:39:02,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 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) [2023-08-26 07:39:02,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:39:02,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:39:02,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 07:39:02,003 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2_funErr1ASSERT_VIOLATIONDATA_RACE === [t1_funErr3ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr4ASSERT_VIOLATIONDATA_RACE, t1_funErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 07:39:02,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:39:02,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1257122699, now seen corresponding path program 1 times [2023-08-26 07:39:02,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:39:02,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076805213] [2023-08-26 07:39:02,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:39:02,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:39:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:39:02,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:39:02,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:39:02,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076805213] [2023-08-26 07:39:02,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076805213] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:39:02,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464682026] [2023-08-26 07:39:02,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:39:02,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:39:02,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:39:02,081 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:39:02,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 07:39:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:39:02,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:39:02,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:39:02,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 07:39:02,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 07:39:02,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464682026] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:39:02,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 07:39:02,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-26 07:39:02,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908689992] [2023-08-26 07:39:02,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:39:02,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:39:02,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:39:02,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:39:02,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 07:39:02,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 447 [2023-08-26 07:39:02,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 120 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 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) [2023-08-26 07:39:02,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:39:02,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 447 [2023-08-26 07:39:02,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:39:03,829 INFO L124 PetriNetUnfolderBase]: 14270/25405 cut-off events. [2023-08-26 07:39:03,830 INFO L125 PetriNetUnfolderBase]: For 8554/8794 co-relation queries the response was YES. [2023-08-26 07:39:03,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58237 conditions, 25405 events. 14270/25405 cut-off events. For 8554/8794 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 199567 event pairs, 10758 based on Foata normal form. 40/20101 useless extension candidates. Maximal degree in co-relation 55803. Up to 20720 conditions per place. [2023-08-26 07:39:03,973 INFO L140 encePairwiseOnDemand]: 438/447 looper letters, 134 selfloop transitions, 13 changer transitions 0/168 dead transitions. [2023-08-26 07:39:03,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 168 transitions, 894 flow [2023-08-26 07:39:03,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:39:03,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:39:03,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 694 transitions. [2023-08-26 07:39:03,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.517524235645041 [2023-08-26 07:39:03,977 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 694 transitions. [2023-08-26 07:39:03,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 694 transitions. [2023-08-26 07:39:03,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:39:03,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 694 transitions. [2023-08-26 07:39:03,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 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) [2023-08-26 07:39:03,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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) [2023-08-26 07:39:03,982 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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) [2023-08-26 07:39:03,983 INFO L175 Difference]: Start difference. First operand has 101 places, 120 transitions, 438 flow. Second operand 3 states and 694 transitions. [2023-08-26 07:39:03,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 168 transitions, 894 flow [2023-08-26 07:39:04,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 168 transitions, 864 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:39:04,020 INFO L231 Difference]: Finished difference. Result has 103 places, 129 transitions, 524 flow [2023-08-26 07:39:04,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=524, PETRI_PLACES=103, PETRI_TRANSITIONS=129} [2023-08-26 07:39:04,021 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 7 predicate places. [2023-08-26 07:39:04,021 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 129 transitions, 524 flow [2023-08-26 07:39:04,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 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) [2023-08-26 07:39:04,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:39:04,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:39:04,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 07:39:04,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:39:04,234 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2_funErr4ASSERT_VIOLATIONDATA_RACE === [t1_funErr3ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr4ASSERT_VIOLATIONDATA_RACE, t1_funErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 07:39:04,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:39:04,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1421016032, now seen corresponding path program 1 times [2023-08-26 07:39:04,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:39:04,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997412956] [2023-08-26 07:39:04,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:39:04,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:39:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:39:04,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:39:04,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:39:04,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997412956] [2023-08-26 07:39:04,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997412956] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:39:04,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683412796] [2023-08-26 07:39:04,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:39:04,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:39:04,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:39:04,323 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:39:04,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 07:39:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:39:04,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:39:04,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:39:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:39:04,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:39:04,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:39:04,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683412796] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:39:04,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:39:04,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:39:04,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050520850] [2023-08-26 07:39:04,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:39:04,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:39:04,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:39:04,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:39:04,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:39:04,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 447 [2023-08-26 07:39:04,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 129 transitions, 524 flow. Second operand has 7 states, 7 states have (on average 221.85714285714286) internal successors, (1553), 7 states have internal predecessors, (1553), 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) [2023-08-26 07:39:04,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:39:04,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 447 [2023-08-26 07:39:04,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:39:04,553 INFO L124 PetriNetUnfolderBase]: 32/125 cut-off events. [2023-08-26 07:39:04,553 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-08-26 07:39:04,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 125 events. 32/125 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 347 event pairs, 12 based on Foata normal form. 17/135 useless extension candidates. Maximal degree in co-relation 280. Up to 66 conditions per place. [2023-08-26 07:39:04,554 INFO L140 encePairwiseOnDemand]: 444/447 looper letters, 19 selfloop transitions, 2 changer transitions 18/50 dead transitions. [2023-08-26 07:39:04,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 50 transitions, 227 flow [2023-08-26 07:39:04,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:39:04,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:39:04,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 908 transitions. [2023-08-26 07:39:04,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078299776286354 [2023-08-26 07:39:04,560 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 908 transitions. [2023-08-26 07:39:04,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 908 transitions. [2023-08-26 07:39:04,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:39:04,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 908 transitions. [2023-08-26 07:39:04,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 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) [2023-08-26 07:39:04,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 447.0) internal successors, (2235), 5 states have internal predecessors, (2235), 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) [2023-08-26 07:39:04,567 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 447.0) internal successors, (2235), 5 states have internal predecessors, (2235), 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) [2023-08-26 07:39:04,567 INFO L175 Difference]: Start difference. First operand has 103 places, 129 transitions, 524 flow. Second operand 4 states and 908 transitions. [2023-08-26 07:39:04,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 50 transitions, 227 flow [2023-08-26 07:39:04,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 175 flow, removed 12 selfloop flow, removed 8 redundant places. [2023-08-26 07:39:04,570 INFO L231 Difference]: Finished difference. Result has 41 places, 23 transitions, 55 flow [2023-08-26 07:39:04,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=55, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2023-08-26 07:39:04,572 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -55 predicate places. [2023-08-26 07:39:04,573 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 55 flow [2023-08-26 07:39:04,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 221.85714285714286) internal successors, (1553), 7 states have internal predecessors, (1553), 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) [2023-08-26 07:39:04,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:39:04,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:39:04,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-26 07:39:04,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-26 07:39:04,778 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1_funErr3ASSERT_VIOLATIONDATA_RACE === [t1_funErr3ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr4ASSERT_VIOLATIONDATA_RACE, t1_funErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 07:39:04,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:39:04,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1163731859, now seen corresponding path program 1 times [2023-08-26 07:39:04,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:39:04,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881988903] [2023-08-26 07:39:04,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:39:04,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:39:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:39:04,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:39:04,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:39:04,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881988903] [2023-08-26 07:39:04,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881988903] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:39:04,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:39:04,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:39:04,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516139280] [2023-08-26 07:39:04,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:39:04,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:39:04,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:39:04,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:39:04,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:39:04,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 447 [2023-08-26 07:39:04,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 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) [2023-08-26 07:39:04,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:39:04,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 447 [2023-08-26 07:39:04,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:39:04,865 INFO L124 PetriNetUnfolderBase]: 24/81 cut-off events. [2023-08-26 07:39:04,865 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-26 07:39:04,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 81 events. 24/81 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 22 based on Foata normal form. 3/84 useless extension candidates. Maximal degree in co-relation 163. Up to 61 conditions per place. [2023-08-26 07:39:04,865 INFO L140 encePairwiseOnDemand]: 445/447 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2023-08-26 07:39:04,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 95 flow [2023-08-26 07:39:04,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:39:04,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:39:04,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2023-08-26 07:39:04,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4459358687546607 [2023-08-26 07:39:04,868 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2023-08-26 07:39:04,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2023-08-26 07:39:04,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:39:04,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2023-08-26 07:39:04,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 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) [2023-08-26 07:39:04,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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) [2023-08-26 07:39:04,873 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 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) [2023-08-26 07:39:04,873 INFO L175 Difference]: Start difference. First operand has 41 places, 23 transitions, 55 flow. Second operand 3 states and 598 transitions. [2023-08-26 07:39:04,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 95 flow [2023-08-26 07:39:04,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 91 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:39:04,873 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-08-26 07:39:04,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-08-26 07:39:04,874 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -66 predicate places. [2023-08-26 07:39:04,874 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-08-26 07:39:04,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 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) [2023-08-26 07:39:04,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (25 of 26 remaining) [2023-08-26 07:39:04,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2023-08-26 07:39:04,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2023-08-26 07:39:04,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2023-08-26 07:39:04,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr5ASSERT_VIOLATIONASSERT (21 of 26 remaining) [2023-08-26 07:39:04,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (20 of 26 remaining) [2023-08-26 07:39:04,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2023-08-26 07:39:04,882 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (18 of 26 remaining) [2023-08-26 07:39:04,882 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2023-08-26 07:39:04,882 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2023-08-26 07:39:04,883 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2023-08-26 07:39:04,884 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 26 remaining) [2023-08-26 07:39:04,884 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2023-08-26 07:39:04,884 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr5ASSERT_VIOLATIONASSERT (12 of 26 remaining) [2023-08-26 07:39:04,884 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2023-08-26 07:39:04,884 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2023-08-26 07:39:04,884 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 26 remaining) [2023-08-26 07:39:04,884 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 26 remaining) [2023-08-26 07:39:04,884 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr5ASSERT_VIOLATIONASSERT (7 of 26 remaining) [2023-08-26 07:39:04,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2023-08-26 07:39:04,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2023-08-26 07:39:04,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr5ASSERT_VIOLATIONASSERT (4 of 26 remaining) [2023-08-26 07:39:04,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2023-08-26 07:39:04,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 26 remaining) [2023-08-26 07:39:04,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2023-08-26 07:39:04,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2023-08-26 07:39:04,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 07:39:04,886 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:39:04,889 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-26 07:39:04,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 262 transitions, 546 flow [2023-08-26 07:39:04,949 INFO L124 PetriNetUnfolderBase]: 61/489 cut-off events. [2023-08-26 07:39:04,949 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-26 07:39:04,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 489 events. 61/489 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2426 event pairs, 0 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 266. Up to 8 conditions per place. [2023-08-26 07:39:04,954 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 262 transitions, 546 flow [2023-08-26 07:39:04,957 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 262 transitions, 546 flow [2023-08-26 07:39:04,957 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:39:04,957 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 233 places, 262 transitions, 546 flow [2023-08-26 07:39:04,958 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 233 places, 262 transitions, 546 flow [2023-08-26 07:39:04,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 262 transitions, 546 flow [2023-08-26 07:39:05,007 INFO L124 PetriNetUnfolderBase]: 61/489 cut-off events. [2023-08-26 07:39:05,008 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-26 07:39:05,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 489 events. 61/489 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2426 event pairs, 0 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 266. Up to 8 conditions per place. [2023-08-26 07:39:05,028 INFO L119 LiptonReduction]: Number of co-enabled transitions 30954 [2023-08-26 07:39:08,621 INFO L134 LiptonReduction]: Checked pairs total: 77552 [2023-08-26 07:39:08,622 INFO L136 LiptonReduction]: Total number of compositions: 184 [2023-08-26 07:39:08,623 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 07:39:08,623 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;@65ef901f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:39:08,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-26 07:39:08,626 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:39:08,626 INFO L124 PetriNetUnfolderBase]: 3/27 cut-off events. [2023-08-26 07:39:08,626 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:39:08,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:39:08,626 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 07:39:08,626 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:39:08,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:39:08,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1439025581, now seen corresponding path program 1 times [2023-08-26 07:39:08,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:39:08,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583110785] [2023-08-26 07:39:08,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:39:08,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:39:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:39:08,654 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 07:39:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:39:08,681 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 07:39:08,681 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 07:39:08,681 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-26 07:39:08,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-26 07:39:08,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 07:39:08,681 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 07:39:08,683 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-08-26 07:39:08,684 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 07:39:08,684 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 07:39:08,754 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-26 07:39:08,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 422 transitions, 892 flow [2023-08-26 07:39:08,970 INFO L124 PetriNetUnfolderBase]: 205/1466 cut-off events. [2023-08-26 07:39:08,970 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-26 07:39:08,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1563 conditions, 1466 events. 205/1466 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9689 event pairs, 1 based on Foata normal form. 0/1194 useless extension candidates. Maximal degree in co-relation 878. Up to 32 conditions per place. [2023-08-26 07:39:08,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 367 places, 422 transitions, 892 flow [2023-08-26 07:39:09,018 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 367 places, 422 transitions, 892 flow [2023-08-26 07:39:09,018 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:39:09,018 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 367 places, 422 transitions, 892 flow [2023-08-26 07:39:09,018 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 367 places, 422 transitions, 892 flow [2023-08-26 07:39:09,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 422 transitions, 892 flow [2023-08-26 07:39:09,312 INFO L124 PetriNetUnfolderBase]: 205/1466 cut-off events. [2023-08-26 07:39:09,312 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-26 07:39:09,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1563 conditions, 1466 events. 205/1466 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9689 event pairs, 1 based on Foata normal form. 0/1194 useless extension candidates. Maximal degree in co-relation 878. Up to 32 conditions per place. [2023-08-26 07:39:09,414 INFO L119 LiptonReduction]: Number of co-enabled transitions 112420 [2023-08-26 07:39:13,646 INFO L134 LiptonReduction]: Checked pairs total: 338511 [2023-08-26 07:39:13,647 INFO L136 LiptonReduction]: Total number of compositions: 270 [2023-08-26 07:39:13,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:39:13,648 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;@65ef901f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:39:13,649 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-08-26 07:39:13,650 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:39:13,650 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-26 07:39:13,650 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:39:13,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:39:13,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 07:39:13,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr5ASSERT_VIOLATIONASSERT (and 34 more)] === [2023-08-26 07:39:13,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:39:13,651 INFO L85 PathProgramCache]: Analyzing trace with hash 63432001, now seen corresponding path program 1 times [2023-08-26 07:39:13,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:39:13,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667410799] [2023-08-26 07:39:13,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:39:13,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:39:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:39:13,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:39:13,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:39:13,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667410799] [2023-08-26 07:39:13,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667410799] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:39:13,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:39:13,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:39:13,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941634198] [2023-08-26 07:39:13,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:39:13,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:39:13,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:39:13,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:39:13,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:39:13,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 692 [2023-08-26 07:39:13,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 216 transitions, 480 flow. Second operand has 3 states, 3 states have (on average 347.3333333333333) internal successors, (1042), 3 states have internal predecessors, (1042), 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) [2023-08-26 07:39:13,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:39:13,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 692 [2023-08-26 07:39:13,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand