/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_42-trylock2_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 07:48:49,344 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 07:48:49,428 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 07:48:49,433 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 07:48:49,434 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 07:48:49,458 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 07:48:49,458 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 07:48:49,459 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 07:48:49,459 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 07:48:49,463 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 07:48:49,463 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 07:48:49,463 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 07:48:49,463 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 07:48:49,465 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 07:48:49,465 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 07:48:49,465 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 07:48:49,465 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 07:48:49,466 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 07:48:49,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 07:48:49,466 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 07:48:49,466 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 07:48:49,467 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 07:48:49,467 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 07:48:49,468 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 07:48:49,468 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 07:48:49,468 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 07:48:49,468 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 07:48:49,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:48:49,469 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 07:48:49,469 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 07:48:49,470 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 07:48:49,470 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 07:48:49,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 07:48:49,470 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 07:48:49,470 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 07:48:49,471 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 07:48:49,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 07:48:49,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 07:48:49,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 07:48:49,810 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 07:48:49,811 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 07:48:49,813 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-08-26 07:48:50,919 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 07:48:51,228 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 07:48:51,229 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-08-26 07:48:51,248 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35f584539/5fadaefcb34f4c34a3e714e41376b61a/FLAGcfda51594 [2023-08-26 07:48:51,264 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35f584539/5fadaefcb34f4c34a3e714e41376b61a [2023-08-26 07:48:51,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 07:48:51,269 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 07:48:51,272 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 07:48:51,272 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 07:48:51,275 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 07:48:51,276 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:48:51" (1/1) ... [2023-08-26 07:48:51,277 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@818e73c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:48:51, skipping insertion in model container [2023-08-26 07:48:51,277 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:48:51" (1/1) ... [2023-08-26 07:48:51,326 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 07:48:51,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:48:51,636 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 07:48:51,661 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 07:48:51,663 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 07:48:51,696 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:48:51,739 INFO L206 MainTranslator]: Completed translation [2023-08-26 07:48:51,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:48:51 WrapperNode [2023-08-26 07:48:51,740 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 07:48:51,741 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 07:48:51,741 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 07:48:51,742 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 07:48:51,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:48:51" (1/1) ... [2023-08-26 07:48:51,765 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:48:51" (1/1) ... [2023-08-26 07:48:51,796 INFO L138 Inliner]: procedures = 171, calls = 48, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 157 [2023-08-26 07:48:51,796 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 07:48:51,797 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 07:48:51,797 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 07:48:51,797 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 07:48:51,809 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:48:51" (1/1) ... [2023-08-26 07:48:51,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:48:51" (1/1) ... [2023-08-26 07:48:51,812 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:48:51" (1/1) ... [2023-08-26 07:48:51,812 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:48:51" (1/1) ... [2023-08-26 07:48:51,820 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:48:51" (1/1) ... [2023-08-26 07:48:51,828 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:48:51" (1/1) ... [2023-08-26 07:48:51,830 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:48:51" (1/1) ... [2023-08-26 07:48:51,832 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:48:51" (1/1) ... [2023-08-26 07:48:51,835 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 07:48:51,836 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 07:48:51,836 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 07:48:51,836 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 07:48:51,847 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:48:51" (1/1) ... [2023-08-26 07:48:51,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:48:51,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:48:51,872 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 07:48:51,875 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 07:48:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 07:48:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 07:48:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 07:48:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 07:48:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 07:48:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 07:48:51,907 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 07:48:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 07:48:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-08-26 07:48:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 07:48:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 07:48:51,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 07:48:51,909 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 07:48:52,074 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 07:48:52,075 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 07:48:52,408 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 07:48:52,416 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 07:48:52,416 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-26 07:48:52,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:48:52 BoogieIcfgContainer [2023-08-26 07:48:52,419 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 07:48:52,421 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 07:48:52,421 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 07:48:52,424 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 07:48:52,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 07:48:51" (1/3) ... [2023-08-26 07:48:52,424 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e31d7bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:48:52, skipping insertion in model container [2023-08-26 07:48:52,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:48:51" (2/3) ... [2023-08-26 07:48:52,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e31d7bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:48:52, skipping insertion in model container [2023-08-26 07:48:52,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:48:52" (3/3) ... [2023-08-26 07:48:52,426 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2023-08-26 07:48:52,441 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 07:48:52,441 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-08-26 07:48:52,441 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 07:48:52,521 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 07:48:52,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 252 transitions, 512 flow [2023-08-26 07:48:52,672 INFO L124 PetriNetUnfolderBase]: 53/373 cut-off events. [2023-08-26 07:48:52,672 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:48:52,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 373 events. 53/373 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1734 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 211. Up to 6 conditions per place. [2023-08-26 07:48:52,680 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 252 transitions, 512 flow [2023-08-26 07:48:52,687 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 252 transitions, 512 flow [2023-08-26 07:48:52,690 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:48:52,698 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 222 places, 252 transitions, 512 flow [2023-08-26 07:48:52,700 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 222 places, 252 transitions, 512 flow [2023-08-26 07:48:52,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 252 transitions, 512 flow [2023-08-26 07:48:52,753 INFO L124 PetriNetUnfolderBase]: 53/373 cut-off events. [2023-08-26 07:48:52,753 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:48:52,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 373 events. 53/373 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1734 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 211. Up to 6 conditions per place. [2023-08-26 07:48:52,766 INFO L119 LiptonReduction]: Number of co-enabled transitions 21590 [2023-08-26 07:48:56,780 INFO L134 LiptonReduction]: Checked pairs total: 80249 [2023-08-26 07:48:56,781 INFO L136 LiptonReduction]: Total number of compositions: 189 [2023-08-26 07:48:56,793 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:48:56,798 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;@72ac7535, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:48:56,799 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-26 07:48:56,803 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:48:56,803 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-08-26 07:48:56,803 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:48:56,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:48:56,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 07:48:56,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:48:56,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:48:56,809 INFO L85 PathProgramCache]: Analyzing trace with hash 899494757, now seen corresponding path program 1 times [2023-08-26 07:48:56,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:48:56,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285438052] [2023-08-26 07:48:56,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:48:56,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:48:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:48:57,013 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 07:48:57,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:48:57,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285438052] [2023-08-26 07:48:57,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285438052] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:48:57,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:48:57,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:48:57,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419599840] [2023-08-26 07:48:57,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:48:57,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:48:57,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:48:57,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:48:57,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:48:57,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 441 [2023-08-26 07:48:57,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 123 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:48:57,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:48:57,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 441 [2023-08-26 07:48:57,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:48:57,388 INFO L124 PetriNetUnfolderBase]: 742/1937 cut-off events. [2023-08-26 07:48:57,389 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:48:57,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3441 conditions, 1937 events. 742/1937 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 12304 event pairs, 643 based on Foata normal form. 344/1931 useless extension candidates. Maximal degree in co-relation 3417. Up to 1470 conditions per place. [2023-08-26 07:48:57,405 INFO L140 encePairwiseOnDemand]: 410/441 looper letters, 78 selfloop transitions, 2 changer transitions 2/116 dead transitions. [2023-08-26 07:48:57,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 116 transitions, 404 flow [2023-08-26 07:48:57,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:48:57,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:48:57,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 744 transitions. [2023-08-26 07:48:57,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.562358276643991 [2023-08-26 07:48:57,423 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 744 transitions. [2023-08-26 07:48:57,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 744 transitions. [2023-08-26 07:48:57,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:48:57,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 744 transitions. [2023-08-26 07:48:57,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 07:48:57,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 07:48:57,442 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 07:48:57,443 INFO L175 Difference]: Start difference. First operand has 97 places, 123 transitions, 254 flow. Second operand 3 states and 744 transitions. [2023-08-26 07:48:57,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 116 transitions, 404 flow [2023-08-26 07:48:57,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 116 transitions, 404 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:48:57,452 INFO L231 Difference]: Finished difference. Result has 95 places, 89 transitions, 191 flow [2023-08-26 07:48:57,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=95, PETRI_TRANSITIONS=89} [2023-08-26 07:48:57,457 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -2 predicate places. [2023-08-26 07:48:57,458 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 89 transitions, 191 flow [2023-08-26 07:48:57,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:48:57,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:48:57,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:48:57,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 07:48:57,459 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:48:57,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:48:57,468 INFO L85 PathProgramCache]: Analyzing trace with hash -656256019, now seen corresponding path program 1 times [2023-08-26 07:48:57,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:48:57,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183875151] [2023-08-26 07:48:57,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:48:57,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:48:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:48:57,597 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 07:48:57,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:48:57,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183875151] [2023-08-26 07:48:57,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183875151] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:48:57,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433840280] [2023-08-26 07:48:57,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:48:57,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:48:57,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:48:57,601 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 07:48:57,654 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 07:48:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:48:57,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:48:57,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:48:57,724 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 07:48:57,725 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 07:48:57,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433840280] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:48:57,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 07:48:57,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-26 07:48:57,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732274962] [2023-08-26 07:48:57,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:48:57,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:48:57,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:48:57,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:48:57,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 07:48:57,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 441 [2023-08-26 07:48:57,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 89 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states 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 07:48:57,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:48:57,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 441 [2023-08-26 07:48:57,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:48:58,219 INFO L124 PetriNetUnfolderBase]: 1625/3889 cut-off events. [2023-08-26 07:48:58,219 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-08-26 07:48:58,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7291 conditions, 3889 events. 1625/3889 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 27163 event pairs, 291 based on Foata normal form. 0/3136 useless extension candidates. Maximal degree in co-relation 7271. Up to 1831 conditions per place. [2023-08-26 07:48:58,239 INFO L140 encePairwiseOnDemand]: 426/441 looper letters, 113 selfloop transitions, 10 changer transitions 0/143 dead transitions. [2023-08-26 07:48:58,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 143 transitions, 550 flow [2023-08-26 07:48:58,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:48:58,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:48:58,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 710 transitions. [2023-08-26 07:48:58,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366591080876795 [2023-08-26 07:48:58,242 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 710 transitions. [2023-08-26 07:48:58,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 710 transitions. [2023-08-26 07:48:58,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:48:58,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 710 transitions. [2023-08-26 07:48:58,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:48:58,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 07:48:58,249 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 07:48:58,251 INFO L175 Difference]: Start difference. First operand has 95 places, 89 transitions, 191 flow. Second operand 3 states and 710 transitions. [2023-08-26 07:48:58,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 143 transitions, 550 flow [2023-08-26 07:48:58,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 143 transitions, 544 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:48:58,257 INFO L231 Difference]: Finished difference. Result has 94 places, 95 transitions, 261 flow [2023-08-26 07:48:58,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=94, PETRI_TRANSITIONS=95} [2023-08-26 07:48:58,261 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -3 predicate places. [2023-08-26 07:48:58,262 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 95 transitions, 261 flow [2023-08-26 07:48:58,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states 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 07:48:58,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:48:58,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:48:58,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 07:48:58,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:48:58,468 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:48:58,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:48:58,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1130900813, now seen corresponding path program 1 times [2023-08-26 07:48:58,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:48:58,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467354621] [2023-08-26 07:48:58,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:48:58,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:48:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:48:58,576 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 07:48:58,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:48:58,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467354621] [2023-08-26 07:48:58,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467354621] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:48:58,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611540342] [2023-08-26 07:48:58,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:48:58,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:48:58,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:48:58,586 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 07:48:58,587 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 07:48:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:48:58,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:48:58,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:48:58,733 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 07:48:58,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:48:58,750 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 07:48:58,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611540342] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:48:58,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:48:58,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:48:58,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408081471] [2023-08-26 07:48:58,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:48:58,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:48:58,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:48:58,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:48:58,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:48:58,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 441 [2023-08-26 07:48:58,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 95 transitions, 261 flow. Second operand has 7 states, 7 states have (on average 209.28571428571428) internal successors, (1465), 7 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states 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 07:48:58,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:48:58,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 441 [2023-08-26 07:48:58,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:48:58,824 INFO L124 PetriNetUnfolderBase]: 48/173 cut-off events. [2023-08-26 07:48:58,824 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-08-26 07:48:58,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 173 events. 48/173 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 354 event pairs, 23 based on Foata normal form. 25/195 useless extension candidates. Maximal degree in co-relation 339. Up to 98 conditions per place. [2023-08-26 07:48:58,825 INFO L140 encePairwiseOnDemand]: 438/441 looper letters, 45 selfloop transitions, 2 changer transitions 6/70 dead transitions. [2023-08-26 07:48:58,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 70 transitions, 277 flow [2023-08-26 07:48:58,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:48:58,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:48:58,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 882 transitions. [2023-08-26 07:48:58,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-26 07:48:58,828 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 882 transitions. [2023-08-26 07:48:58,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 882 transitions. [2023-08-26 07:48:58,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:48:58,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 882 transitions. [2023-08-26 07:48:58,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 220.5) internal successors, (882), 4 states have internal predecessors, (882), 0 states have call successors, (0), 0 states 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 07:48:58,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 441.0) internal successors, (2205), 5 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states 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 07:48:58,834 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 441.0) internal successors, (2205), 5 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states 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 07:48:58,834 INFO L175 Difference]: Start difference. First operand has 94 places, 95 transitions, 261 flow. Second operand 4 states and 882 transitions. [2023-08-26 07:48:58,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 70 transitions, 277 flow [2023-08-26 07:48:58,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 70 transitions, 251 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 07:48:58,837 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 93 flow [2023-08-26 07:48:58,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-08-26 07:48:58,837 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -46 predicate places. [2023-08-26 07:48:58,838 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 93 flow [2023-08-26 07:48:58,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 209.28571428571428) internal successors, (1465), 7 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states 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 07:48:58,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:48:58,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:48:58,847 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 07:48:59,044 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,SelfDestructingSolverStorable2 [2023-08-26 07:48:59,045 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:48:59,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:48:59,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2048467595, now seen corresponding path program 1 times [2023-08-26 07:48:59,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:48:59,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051736120] [2023-08-26 07:48:59,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:48:59,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:48:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:48:59,079 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 07:48:59,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:48:59,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051736120] [2023-08-26 07:48:59,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051736120] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:48:59,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:48:59,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:48:59,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649413423] [2023-08-26 07:48:59,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:48:59,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:48:59,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:48:59,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:48:59,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:48:59,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 441 [2023-08-26 07:48:59,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states 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 07:48:59,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:48:59,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 441 [2023-08-26 07:48:59,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:48:59,136 INFO L124 PetriNetUnfolderBase]: 50/164 cut-off events. [2023-08-26 07:48:59,136 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-26 07:48:59,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 164 events. 50/164 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 311 event pairs, 48 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 313. Up to 126 conditions per place. [2023-08-26 07:48:59,137 INFO L140 encePairwiseOnDemand]: 438/441 looper letters, 29 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-08-26 07:48:59,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 159 flow [2023-08-26 07:48:59,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:48:59,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:48:59,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2023-08-26 07:48:59,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595616024187453 [2023-08-26 07:48:59,139 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2023-08-26 07:48:59,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2023-08-26 07:48:59,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:48:59,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2023-08-26 07:48:59,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states 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 07:48:59,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 07:48:59,144 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 07:48:59,144 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 93 flow. Second operand 3 states and 608 transitions. [2023-08-26 07:48:59,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 159 flow [2023-08-26 07:48:59,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 155 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:48:59,145 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 92 flow [2023-08-26 07:48:59,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-08-26 07:48:59,146 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -50 predicate places. [2023-08-26 07:48:59,146 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 92 flow [2023-08-26 07:48:59,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states 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 07:48:59,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:48:59,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:48:59,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 07:48:59,147 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:48:59,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:48:59,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1002387754, now seen corresponding path program 1 times [2023-08-26 07:48:59,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:48:59,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123404398] [2023-08-26 07:48:59,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:48:59,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:48:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:48:59,180 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 07:48:59,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:48:59,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123404398] [2023-08-26 07:48:59,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123404398] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:48:59,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:48:59,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:48:59,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645152940] [2023-08-26 07:48:59,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:48:59,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:48:59,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:48:59,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:48:59,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:48:59,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 441 [2023-08-26 07:48:59,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 92 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 07:48:59,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:48:59,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 441 [2023-08-26 07:48:59,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:48:59,226 INFO L124 PetriNetUnfolderBase]: 48/159 cut-off events. [2023-08-26 07:48:59,226 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:48:59,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 159 events. 48/159 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 293 event pairs, 44 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 308. Up to 116 conditions per place. [2023-08-26 07:48:59,227 INFO L140 encePairwiseOnDemand]: 438/441 looper letters, 28 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-26 07:48:59,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 42 transitions, 155 flow [2023-08-26 07:48:59,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:48:59,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:48:59,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 607 transitions. [2023-08-26 07:48:59,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45880574452003026 [2023-08-26 07:48:59,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 607 transitions. [2023-08-26 07:48:59,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 607 transitions. [2023-08-26 07:48:59,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:48:59,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 607 transitions. [2023-08-26 07:48:59,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states 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 07:48:59,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 07:48:59,234 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 07:48:59,234 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 92 flow. Second operand 3 states and 607 transitions. [2023-08-26 07:48:59,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 42 transitions, 155 flow [2023-08-26 07:48:59,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 151 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:48:59,235 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 90 flow [2023-08-26 07:48:59,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-08-26 07:48:59,236 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -51 predicate places. [2023-08-26 07:48:59,236 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 90 flow [2023-08-26 07:48:59,237 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 07:48:59,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:48:59,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:48:59,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 07:48:59,237 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:48:59,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:48:59,238 INFO L85 PathProgramCache]: Analyzing trace with hash -916179430, now seen corresponding path program 1 times [2023-08-26 07:48:59,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:48:59,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590613232] [2023-08-26 07:48:59,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:48:59,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:48:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:48:59,292 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 07:48:59,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:48:59,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590613232] [2023-08-26 07:48:59,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590613232] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:48:59,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:48:59,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:48:59,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841770694] [2023-08-26 07:48:59,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:48:59,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:48:59,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:48:59,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:48:59,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:48:59,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 441 [2023-08-26 07:48:59,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states 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 07:48:59,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:48:59,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 441 [2023-08-26 07:48:59,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:48:59,352 INFO L124 PetriNetUnfolderBase]: 52/157 cut-off events. [2023-08-26 07:48:59,353 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:48:59,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 157 events. 52/157 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 265 event pairs, 40 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 318. Up to 106 conditions per place. [2023-08-26 07:48:59,354 INFO L140 encePairwiseOnDemand]: 435/441 looper letters, 28 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-08-26 07:48:59,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 155 flow [2023-08-26 07:48:59,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:48:59,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:48:59,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 634 transitions. [2023-08-26 07:48:59,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47921390778533635 [2023-08-26 07:48:59,356 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 634 transitions. [2023-08-26 07:48:59,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 634 transitions. [2023-08-26 07:48:59,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:48:59,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 634 transitions. [2023-08-26 07:48:59,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:48:59,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 07:48:59,360 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 07:48:59,360 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 90 flow. Second operand 3 states and 634 transitions. [2023-08-26 07:48:59,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 155 flow [2023-08-26 07:48:59,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 151 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:48:59,361 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 90 flow [2023-08-26 07:48:59,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-08-26 07:48:59,362 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -53 predicate places. [2023-08-26 07:48:59,362 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 90 flow [2023-08-26 07:48:59,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states 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 07:48:59,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:48:59,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:48:59,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 07:48:59,363 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:48:59,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:48:59,363 INFO L85 PathProgramCache]: Analyzing trace with hash 616532114, now seen corresponding path program 1 times [2023-08-26 07:48:59,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:48:59,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549239365] [2023-08-26 07:48:59,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:48:59,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:48:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:48:59,395 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 07:48:59,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:48:59,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549239365] [2023-08-26 07:48:59,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549239365] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:48:59,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:48:59,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:48:59,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590703079] [2023-08-26 07:48:59,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:48:59,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:48:59,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:48:59,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:48:59,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:48:59,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 441 [2023-08-26 07:48:59,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states 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 07:48:59,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:48:59,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 441 [2023-08-26 07:48:59,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:48:59,445 INFO L124 PetriNetUnfolderBase]: 50/152 cut-off events. [2023-08-26 07:48:59,445 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 07:48:59,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 152 events. 50/152 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 247 event pairs, 46 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 313. Up to 121 conditions per place. [2023-08-26 07:48:59,446 INFO L140 encePairwiseOnDemand]: 438/441 looper letters, 29 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-08-26 07:48:59,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 155 flow [2023-08-26 07:48:59,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:48:59,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:48:59,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 626 transitions. [2023-08-26 07:48:59,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47316704459561604 [2023-08-26 07:48:59,448 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 626 transitions. [2023-08-26 07:48:59,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 626 transitions. [2023-08-26 07:48:59,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:48:59,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 626 transitions. [2023-08-26 07:48:59,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states 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 07:48:59,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 07:48:59,452 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 07:48:59,452 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 90 flow. Second operand 3 states and 626 transitions. [2023-08-26 07:48:59,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 155 flow [2023-08-26 07:48:59,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 147 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:48:59,454 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 84 flow [2023-08-26 07:48:59,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-08-26 07:48:59,454 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -54 predicate places. [2023-08-26 07:48:59,455 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 84 flow [2023-08-26 07:48:59,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states 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 07:48:59,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:48:59,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:48:59,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 07:48:59,455 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr7ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:48:59,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:48:59,456 INFO L85 PathProgramCache]: Analyzing trace with hash -712537323, now seen corresponding path program 1 times [2023-08-26 07:48:59,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:48:59,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362865456] [2023-08-26 07:48:59,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:48:59,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:48:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:48:59,492 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 07:48:59,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:48:59,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362865456] [2023-08-26 07:48:59,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362865456] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:48:59,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:48:59,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:48:59,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698869653] [2023-08-26 07:48:59,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:48:59,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:48:59,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:48:59,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:48:59,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:48:59,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 441 [2023-08-26 07:48:59,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:48:59,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:48:59,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 441 [2023-08-26 07:48:59,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:48:59,537 INFO L124 PetriNetUnfolderBase]: 48/147 cut-off events. [2023-08-26 07:48:59,537 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:48:59,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 147 events. 48/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 239 event pairs, 46 based on Foata normal form. 3/150 useless extension candidates. Maximal degree in co-relation 296. Up to 121 conditions per place. [2023-08-26 07:48:59,537 INFO L140 encePairwiseOnDemand]: 439/441 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2023-08-26 07:48:59,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 147 flow [2023-08-26 07:48:59,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:48:59,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:48:59,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 625 transitions. [2023-08-26 07:48:59,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47241118669690096 [2023-08-26 07:48:59,540 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 625 transitions. [2023-08-26 07:48:59,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 625 transitions. [2023-08-26 07:48:59,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:48:59,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 625 transitions. [2023-08-26 07:48:59,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states 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 07:48:59,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 07:48:59,543 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 07:48:59,544 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 84 flow. Second operand 3 states and 625 transitions. [2023-08-26 07:48:59,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 147 flow [2023-08-26 07:48:59,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 143 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:48:59,545 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-08-26 07:48:59,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-08-26 07:48:59,545 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -55 predicate places. [2023-08-26 07:48:59,546 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-08-26 07:48:59,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:48:59,548 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (24 of 25 remaining) [2023-08-26 07:48:59,548 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2023-08-26 07:48:59,548 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONASSERT (22 of 25 remaining) [2023-08-26 07:48:59,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2023-08-26 07:48:59,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2023-08-26 07:48:59,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2023-08-26 07:48:59,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2023-08-26 07:48:59,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2023-08-26 07:48:59,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (16 of 25 remaining) [2023-08-26 07:48:59,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2023-08-26 07:48:59,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2023-08-26 07:48:59,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2023-08-26 07:48:59,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2023-08-26 07:48:59,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2023-08-26 07:48:59,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONASSERT (10 of 25 remaining) [2023-08-26 07:48:59,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2023-08-26 07:48:59,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2023-08-26 07:48:59,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2023-08-26 07:48:59,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2023-08-26 07:48:59,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2023-08-26 07:48:59,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2023-08-26 07:48:59,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2023-08-26 07:48:59,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2023-08-26 07:48:59,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONASSERT (1 of 25 remaining) [2023-08-26 07:48:59,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2023-08-26 07:48:59,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 07:48:59,552 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:48:59,553 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 (1/2) [2023-08-26 07:48:59,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 252 transitions, 512 flow [2023-08-26 07:48:59,585 INFO L124 PetriNetUnfolderBase]: 53/373 cut-off events. [2023-08-26 07:48:59,586 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:48:59,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 373 events. 53/373 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1734 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 211. Up to 6 conditions per place. [2023-08-26 07:48:59,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 252 transitions, 512 flow [2023-08-26 07:48:59,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 247 transitions, 499 flow [2023-08-26 07:48:59,591 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:48:59,591 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 247 transitions, 499 flow [2023-08-26 07:48:59,591 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 247 transitions, 499 flow [2023-08-26 07:48:59,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 247 transitions, 499 flow [2023-08-26 07:48:59,634 INFO L124 PetriNetUnfolderBase]: 52/368 cut-off events. [2023-08-26 07:48:59,635 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:48:59,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 368 events. 52/368 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1727 event pairs, 0 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 211. Up to 6 conditions per place. [2023-08-26 07:48:59,645 INFO L119 LiptonReduction]: Number of co-enabled transitions 21590 [2023-08-26 07:49:03,210 INFO L134 LiptonReduction]: Checked pairs total: 76930 [2023-08-26 07:49:03,210 INFO L136 LiptonReduction]: Total number of compositions: 184 [2023-08-26 07:49:03,212 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 07:49:03,212 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;@72ac7535, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:49:03,213 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 07:49:03,215 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:49:03,215 INFO L124 PetriNetUnfolderBase]: 3/34 cut-off events. [2023-08-26 07:49:03,216 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:49:03,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:03,216 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 07:49:03,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:49:03,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:03,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1044173177, now seen corresponding path program 1 times [2023-08-26 07:49:03,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:03,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795767724] [2023-08-26 07:49:03,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:03,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:49:03,231 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 07:49:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:49:03,252 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 07:49:03,252 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 07:49:03,253 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 07:49:03,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 07:49:03,253 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 07:49:03,253 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-26 07:49:03,254 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 07:49:03,254 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 07:49:03,280 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 07:49:03,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 339 transitions, 696 flow [2023-08-26 07:49:03,346 INFO L124 PetriNetUnfolderBase]: 88/612 cut-off events. [2023-08-26 07:49:03,346 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:49:03,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 626 conditions, 612 events. 88/612 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3191 event pairs, 0 based on Foata normal form. 0/476 useless extension candidates. Maximal degree in co-relation 375. Up to 9 conditions per place. [2023-08-26 07:49:03,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 339 transitions, 696 flow [2023-08-26 07:49:03,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 298 places, 339 transitions, 696 flow [2023-08-26 07:49:03,361 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:49:03,361 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 298 places, 339 transitions, 696 flow [2023-08-26 07:49:03,361 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 298 places, 339 transitions, 696 flow [2023-08-26 07:49:03,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 339 transitions, 696 flow [2023-08-26 07:49:03,426 INFO L124 PetriNetUnfolderBase]: 88/612 cut-off events. [2023-08-26 07:49:03,426 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:49:03,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 626 conditions, 612 events. 88/612 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3191 event pairs, 0 based on Foata normal form. 0/476 useless extension candidates. Maximal degree in co-relation 375. Up to 9 conditions per place. [2023-08-26 07:49:03,459 INFO L119 LiptonReduction]: Number of co-enabled transitions 59500 [2023-08-26 07:49:07,267 INFO L134 LiptonReduction]: Checked pairs total: 257786 [2023-08-26 07:49:07,267 INFO L136 LiptonReduction]: Total number of compositions: 211 [2023-08-26 07:49:07,270 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:49:07,273 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;@72ac7535, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:49:07,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-08-26 07:49:07,276 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:49:07,276 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-26 07:49:07,276 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:49:07,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:07,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 07:49:07,276 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-26 07:49:07,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:07,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1683254364, now seen corresponding path program 1 times [2023-08-26 07:49:07,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:07,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444926038] [2023-08-26 07:49:07,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:07,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:07,299 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 07:49:07,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:49:07,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444926038] [2023-08-26 07:49:07,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444926038] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:49:07,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:49:07,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:49:07,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356880421] [2023-08-26 07:49:07,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:49:07,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:49:07,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:49:07,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:49:07,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:49:07,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 550 [2023-08-26 07:49:07,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 183 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 281.0) internal successors, (843), 3 states have internal predecessors, (843), 0 states have call successors, (0), 0 states 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 07:49:07,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:49:07,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 550 [2023-08-26 07:49:07,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:49:11,897 INFO L124 PetriNetUnfolderBase]: 27163/55421 cut-off events. [2023-08-26 07:49:11,897 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-08-26 07:49:11,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97130 conditions, 55421 events. 27163/55421 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 1020. Compared 559514 event pairs, 12659 based on Foata normal form. 9455/56626 useless extension candidates. Maximal degree in co-relation 4532. Up to 41532 conditions per place. [2023-08-26 07:49:12,213 INFO L140 encePairwiseOnDemand]: 510/550 looper letters, 96 selfloop transitions, 2 changer transitions 0/168 dead transitions. [2023-08-26 07:49:12,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 168 transitions, 550 flow [2023-08-26 07:49:12,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:49:12,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:49:12,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 988 transitions. [2023-08-26 07:49:12,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5987878787878788 [2023-08-26 07:49:12,218 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 988 transitions. [2023-08-26 07:49:12,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 988 transitions. [2023-08-26 07:49:12,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:49:12,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 988 transitions. [2023-08-26 07:49:12,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states 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 07:49:12,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 07:49:12,225 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 07:49:12,225 INFO L175 Difference]: Start difference. First operand has 149 places, 183 transitions, 384 flow. Second operand 3 states and 988 transitions. [2023-08-26 07:49:12,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 168 transitions, 550 flow [2023-08-26 07:49:12,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 168 transitions, 550 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:49:12,231 INFO L231 Difference]: Finished difference. Result has 151 places, 147 transitions, 322 flow [2023-08-26 07:49:12,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=151, PETRI_TRANSITIONS=147} [2023-08-26 07:49:12,232 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 2 predicate places. [2023-08-26 07:49:12,232 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 147 transitions, 322 flow [2023-08-26 07:49:12,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 281.0) internal successors, (843), 3 states have internal predecessors, (843), 0 states have call successors, (0), 0 states 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 07:49:12,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:12,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:49:12,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 07:49:12,233 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-26 07:49:12,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:12,233 INFO L85 PathProgramCache]: Analyzing trace with hash -34749547, now seen corresponding path program 1 times [2023-08-26 07:49:12,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:12,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709829502] [2023-08-26 07:49:12,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:12,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:12,254 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 07:49:12,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:49:12,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709829502] [2023-08-26 07:49:12,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709829502] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:49:12,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:49:12,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:49:12,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983809810] [2023-08-26 07:49:12,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:49:12,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:49:12,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:49:12,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:49:12,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:49:12,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 550 [2023-08-26 07:49:12,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 147 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states 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 07:49:12,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:49:12,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 550 [2023-08-26 07:49:12,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:49:23,397 INFO L124 PetriNetUnfolderBase]: 104546/190270 cut-off events. [2023-08-26 07:49:23,398 INFO L125 PetriNetUnfolderBase]: For 2286/2286 co-relation queries the response was YES. [2023-08-26 07:49:23,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353610 conditions, 190270 events. 104546/190270 cut-off events. For 2286/2286 co-relation queries the response was YES. Maximal size of possible extension queue 2846. Compared 1969170 event pairs, 33124 based on Foata normal form. 0/154373 useless extension candidates. Maximal degree in co-relation 353416. Up to 81945 conditions per place. [2023-08-26 07:49:24,559 INFO L140 encePairwiseOnDemand]: 525/550 looper letters, 173 selfloop transitions, 18 changer transitions 0/238 dead transitions. [2023-08-26 07:49:24,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 238 transitions, 904 flow [2023-08-26 07:49:24,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:49:24,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:49:24,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 961 transitions. [2023-08-26 07:49:24,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5824242424242424 [2023-08-26 07:49:24,566 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 961 transitions. [2023-08-26 07:49:24,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 961 transitions. [2023-08-26 07:49:24,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:49:24,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 961 transitions. [2023-08-26 07:49:24,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 0 states have call successors, (0), 0 states 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 07:49:24,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 07:49:24,577 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 07:49:24,577 INFO L175 Difference]: Start difference. First operand has 151 places, 147 transitions, 322 flow. Second operand 3 states and 961 transitions. [2023-08-26 07:49:24,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 238 transitions, 904 flow [2023-08-26 07:49:24,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 238 transitions, 901 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:49:24,584 INFO L231 Difference]: Finished difference. Result has 154 places, 165 transitions, 478 flow [2023-08-26 07:49:24,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=478, PETRI_PLACES=154, PETRI_TRANSITIONS=165} [2023-08-26 07:49:24,585 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 5 predicate places. [2023-08-26 07:49:24,585 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 165 transitions, 478 flow [2023-08-26 07:49:24,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states 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 07:49:24,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:24,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:49:24,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 07:49:24,586 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-26 07:49:24,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:24,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1652218651, now seen corresponding path program 1 times [2023-08-26 07:49:24,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:24,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867328816] [2023-08-26 07:49:24,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:24,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:24,625 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 07:49:24,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:49:24,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867328816] [2023-08-26 07:49:24,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867328816] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:49:24,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092860409] [2023-08-26 07:49:24,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:24,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:49:24,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:49:24,627 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:49:24,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 07:49:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:24,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:49:24,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:49:24,718 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 07:49:24,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:49:24,734 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 07:49:24,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092860409] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:49:24,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:49:24,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:49:24,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526991161] [2023-08-26 07:49:24,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:49:24,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:49:24,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:49:24,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:49:24,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:49:24,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 550 [2023-08-26 07:49:24,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 165 transitions, 478 flow. Second operand has 7 states, 7 states have (on average 282.2857142857143) internal successors, (1976), 7 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states 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 07:49:24,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:49:24,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 550 [2023-08-26 07:49:24,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:49:25,185 INFO L124 PetriNetUnfolderBase]: 2822/6267 cut-off events. [2023-08-26 07:49:25,185 INFO L125 PetriNetUnfolderBase]: For 2435/2526 co-relation queries the response was YES. [2023-08-26 07:49:25,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14062 conditions, 6267 events. 2822/6267 cut-off events. For 2435/2526 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 47991 event pairs, 86 based on Foata normal form. 707/6794 useless extension candidates. Maximal degree in co-relation 2554. Up to 3542 conditions per place. [2023-08-26 07:49:25,213 INFO L140 encePairwiseOnDemand]: 547/550 looper letters, 113 selfloop transitions, 3 changer transitions 0/178 dead transitions. [2023-08-26 07:49:25,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 178 transitions, 718 flow [2023-08-26 07:49:25,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 07:49:25,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 07:49:25,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1510 transitions. [2023-08-26 07:49:25,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490909090909091 [2023-08-26 07:49:25,221 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1510 transitions. [2023-08-26 07:49:25,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1510 transitions. [2023-08-26 07:49:25,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:49:25,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1510 transitions. [2023-08-26 07:49:25,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states 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 07:49:25,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states 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 07:49:25,229 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states 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 07:49:25,229 INFO L175 Difference]: Start difference. First operand has 154 places, 165 transitions, 478 flow. Second operand 5 states and 1510 transitions. [2023-08-26 07:49:25,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 178 transitions, 718 flow [2023-08-26 07:49:25,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 178 transitions, 680 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 07:49:25,237 INFO L231 Difference]: Finished difference. Result has 112 places, 112 transitions, 302 flow [2023-08-26 07:49:25,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=302, PETRI_PLACES=112, PETRI_TRANSITIONS=112} [2023-08-26 07:49:25,238 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -37 predicate places. [2023-08-26 07:49:25,238 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 112 transitions, 302 flow [2023-08-26 07:49:25,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 282.2857142857143) internal successors, (1976), 7 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states 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 07:49:25,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:25,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:49:25,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 07:49:25,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:49:25,445 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-26 07:49:25,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:25,445 INFO L85 PathProgramCache]: Analyzing trace with hash 102566268, now seen corresponding path program 1 times [2023-08-26 07:49:25,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:25,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394161464] [2023-08-26 07:49:25,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:25,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:25,466 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 07:49:25,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:49:25,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394161464] [2023-08-26 07:49:25,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394161464] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:49:25,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:49:25,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:49:25,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782297504] [2023-08-26 07:49:25,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:49:25,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:49:25,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:49:25,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:49:25,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:49:25,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 550 [2023-08-26 07:49:25,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 112 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:49:25,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:49:25,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 550 [2023-08-26 07:49:25,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:49:26,195 INFO L124 PetriNetUnfolderBase]: 4963/10426 cut-off events. [2023-08-26 07:49:26,196 INFO L125 PetriNetUnfolderBase]: For 4366/4372 co-relation queries the response was YES. [2023-08-26 07:49:26,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22489 conditions, 10426 events. 4963/10426 cut-off events. For 4366/4372 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 79545 event pairs, 4161 based on Foata normal form. 0/9396 useless extension candidates. Maximal degree in co-relation 16989. Up to 7839 conditions per place. [2023-08-26 07:49:26,244 INFO L140 encePairwiseOnDemand]: 543/550 looper letters, 100 selfloop transitions, 9 changer transitions 0/147 dead transitions. [2023-08-26 07:49:26,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 147 transitions, 623 flow [2023-08-26 07:49:26,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:49:26,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:49:26,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 853 transitions. [2023-08-26 07:49:26,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516969696969697 [2023-08-26 07:49:26,247 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 853 transitions. [2023-08-26 07:49:26,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 853 transitions. [2023-08-26 07:49:26,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:49:26,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 853 transitions. [2023-08-26 07:49:26,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 0 states have call successors, (0), 0 states 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 07:49:26,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 07:49:26,253 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 07:49:26,253 INFO L175 Difference]: Start difference. First operand has 112 places, 112 transitions, 302 flow. Second operand 3 states and 853 transitions. [2023-08-26 07:49:26,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 147 transitions, 623 flow [2023-08-26 07:49:26,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 147 transitions, 612 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-26 07:49:26,256 INFO L231 Difference]: Finished difference. Result has 112 places, 119 transitions, 364 flow [2023-08-26 07:49:26,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=364, PETRI_PLACES=112, PETRI_TRANSITIONS=119} [2023-08-26 07:49:26,257 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -37 predicate places. [2023-08-26 07:49:26,257 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 119 transitions, 364 flow [2023-08-26 07:49:26,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:49:26,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:26,258 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:49:26,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 07:49:26,258 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-26 07:49:26,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:26,258 INFO L85 PathProgramCache]: Analyzing trace with hash 2022547337, now seen corresponding path program 1 times [2023-08-26 07:49:26,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:26,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146882773] [2023-08-26 07:49:26,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:26,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:26,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:49:26,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:49:26,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146882773] [2023-08-26 07:49:26,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146882773] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:49:26,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:49:26,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:49:26,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629512454] [2023-08-26 07:49:26,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:49:26,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:49:26,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:49:26,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:49:26,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:49:26,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 550 [2023-08-26 07:49:26,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 119 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states 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 07:49:26,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:49:26,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 550 [2023-08-26 07:49:26,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:49:27,062 INFO L124 PetriNetUnfolderBase]: 5127/10725 cut-off events. [2023-08-26 07:49:27,062 INFO L125 PetriNetUnfolderBase]: For 3838/3850 co-relation queries the response was YES. [2023-08-26 07:49:27,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22983 conditions, 10725 events. 5127/10725 cut-off events. For 3838/3850 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 82283 event pairs, 4105 based on Foata normal form. 0/9722 useless extension candidates. Maximal degree in co-relation 17542. Up to 7786 conditions per place. [2023-08-26 07:49:27,117 INFO L140 encePairwiseOnDemand]: 542/550 looper letters, 106 selfloop transitions, 12 changer transitions 0/156 dead transitions. [2023-08-26 07:49:27,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 156 transitions, 713 flow [2023-08-26 07:49:27,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:49:27,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:49:27,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 853 transitions. [2023-08-26 07:49:27,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516969696969697 [2023-08-26 07:49:27,120 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 853 transitions. [2023-08-26 07:49:27,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 853 transitions. [2023-08-26 07:49:27,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:49:27,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 853 transitions. [2023-08-26 07:49:27,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 0 states have call successors, (0), 0 states 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 07:49:27,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 07:49:27,132 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 07:49:27,132 INFO L175 Difference]: Start difference. First operand has 112 places, 119 transitions, 364 flow. Second operand 3 states and 853 transitions. [2023-08-26 07:49:27,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 156 transitions, 713 flow [2023-08-26 07:49:27,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 156 transitions, 701 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:49:27,138 INFO L231 Difference]: Finished difference. Result has 115 places, 127 transitions, 453 flow [2023-08-26 07:49:27,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=453, PETRI_PLACES=115, PETRI_TRANSITIONS=127} [2023-08-26 07:49:27,139 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -34 predicate places. [2023-08-26 07:49:27,139 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 127 transitions, 453 flow [2023-08-26 07:49:27,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states 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 07:49:27,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:27,139 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:49:27,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 07:49:27,140 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-26 07:49:27,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:27,140 INFO L85 PathProgramCache]: Analyzing trace with hash 673437684, now seen corresponding path program 1 times [2023-08-26 07:49:27,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:27,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224529896] [2023-08-26 07:49:27,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:27,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:27,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 07:49:27,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:49:27,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224529896] [2023-08-26 07:49:27,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224529896] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:49:27,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:49:27,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 07:49:27,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469587166] [2023-08-26 07:49:27,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:49:27,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 07:49:27,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:49:27,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 07:49:27,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 07:49:27,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 550 [2023-08-26 07:49:27,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 127 transitions, 453 flow. Second operand has 4 states, 4 states have (on average 240.75) internal successors, (963), 4 states have internal predecessors, (963), 0 states have call successors, (0), 0 states 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 07:49:27,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:49:27,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 550 [2023-08-26 07:49:27,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:49:27,722 INFO L124 PetriNetUnfolderBase]: 2046/4624 cut-off events. [2023-08-26 07:49:27,722 INFO L125 PetriNetUnfolderBase]: For 1488/1488 co-relation queries the response was YES. [2023-08-26 07:49:27,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9756 conditions, 4624 events. 2046/4624 cut-off events. For 1488/1488 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 32792 event pairs, 836 based on Foata normal form. 60/4573 useless extension candidates. Maximal degree in co-relation 5570. Up to 1960 conditions per place. [2023-08-26 07:49:27,741 INFO L140 encePairwiseOnDemand]: 543/550 looper letters, 89 selfloop transitions, 7 changer transitions 0/140 dead transitions. [2023-08-26 07:49:27,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 140 transitions, 580 flow [2023-08-26 07:49:27,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:49:27,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:49:27,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1048 transitions. [2023-08-26 07:49:27,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763636363636364 [2023-08-26 07:49:27,744 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1048 transitions. [2023-08-26 07:49:27,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1048 transitions. [2023-08-26 07:49:27,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:49:27,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1048 transitions. [2023-08-26 07:49:27,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states 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 07:49:27,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 550.0) internal successors, (2750), 5 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states 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 07:49:27,750 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 550.0) internal successors, (2750), 5 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states 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 07:49:27,750 INFO L175 Difference]: Start difference. First operand has 115 places, 127 transitions, 453 flow. Second operand 4 states and 1048 transitions. [2023-08-26 07:49:27,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 140 transitions, 580 flow [2023-08-26 07:49:27,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 140 transitions, 496 flow, removed 18 selfloop flow, removed 8 redundant places. [2023-08-26 07:49:27,758 INFO L231 Difference]: Finished difference. Result has 105 places, 98 transitions, 239 flow [2023-08-26 07:49:27,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=105, PETRI_TRANSITIONS=98} [2023-08-26 07:49:27,758 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -44 predicate places. [2023-08-26 07:49:27,758 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 98 transitions, 239 flow [2023-08-26 07:49:27,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 240.75) internal successors, (963), 4 states have internal predecessors, (963), 0 states have call successors, (0), 0 states 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 07:49:27,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:27,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:49:27,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 07:49:27,759 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-26 07:49:27,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:27,760 INFO L85 PathProgramCache]: Analyzing trace with hash -503500358, now seen corresponding path program 1 times [2023-08-26 07:49:27,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:27,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569639143] [2023-08-26 07:49:27,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:27,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:27,802 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 07:49:27,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:49:27,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569639143] [2023-08-26 07:49:27,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569639143] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:49:27,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:49:27,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:49:27,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132951243] [2023-08-26 07:49:27,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:49:27,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:49:27,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:49:27,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:49:27,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:49:27,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 550 [2023-08-26 07:49:27,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 98 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 states 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 07:49:27,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:49:27,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 550 [2023-08-26 07:49:27,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:49:28,237 INFO L124 PetriNetUnfolderBase]: 2233/5248 cut-off events. [2023-08-26 07:49:28,238 INFO L125 PetriNetUnfolderBase]: For 841/841 co-relation queries the response was YES. [2023-08-26 07:49:28,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10119 conditions, 5248 events. 2233/5248 cut-off events. For 841/841 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 38478 event pairs, 2109 based on Foata normal form. 0/4938 useless extension candidates. Maximal degree in co-relation 6069. Up to 3594 conditions per place. [2023-08-26 07:49:28,256 INFO L140 encePairwiseOnDemand]: 547/550 looper letters, 71 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2023-08-26 07:49:28,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 111 transitions, 423 flow [2023-08-26 07:49:28,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:49:28,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:49:28,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 827 transitions. [2023-08-26 07:49:28,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5012121212121212 [2023-08-26 07:49:28,259 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 827 transitions. [2023-08-26 07:49:28,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 827 transitions. [2023-08-26 07:49:28,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:49:28,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 827 transitions. [2023-08-26 07:49:28,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states 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 07:49:28,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 07:49:28,264 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 07:49:28,264 INFO L175 Difference]: Start difference. First operand has 105 places, 98 transitions, 239 flow. Second operand 3 states and 827 transitions. [2023-08-26 07:49:28,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 111 transitions, 423 flow [2023-08-26 07:49:28,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 111 transitions, 422 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:49:28,267 INFO L231 Difference]: Finished difference. Result has 105 places, 97 transitions, 240 flow [2023-08-26 07:49:28,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=105, PETRI_TRANSITIONS=97} [2023-08-26 07:49:28,267 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -44 predicate places. [2023-08-26 07:49:28,268 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 97 transitions, 240 flow [2023-08-26 07:49:28,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 states 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 07:49:28,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:28,268 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:49:28,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 07:49:28,268 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-26 07:49:28,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:28,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1729012370, now seen corresponding path program 1 times [2023-08-26 07:49:28,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:28,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517295904] [2023-08-26 07:49:28,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:28,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:28,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:49:28,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:49:28,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517295904] [2023-08-26 07:49:28,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517295904] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:49:28,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:49:28,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:49:28,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596608067] [2023-08-26 07:49:28,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:49:28,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:49:28,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:49:28,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:49:28,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:49:28,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 550 [2023-08-26 07:49:28,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 97 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states 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 07:49:28,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:49:28,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 550 [2023-08-26 07:49:28,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:49:28,696 INFO L124 PetriNetUnfolderBase]: 2177/5177 cut-off events. [2023-08-26 07:49:28,697 INFO L125 PetriNetUnfolderBase]: For 897/897 co-relation queries the response was YES. [2023-08-26 07:49:28,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10018 conditions, 5177 events. 2177/5177 cut-off events. For 897/897 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 38091 event pairs, 2059 based on Foata normal form. 0/4921 useless extension candidates. Maximal degree in co-relation 5823. Up to 3511 conditions per place. [2023-08-26 07:49:28,710 INFO L140 encePairwiseOnDemand]: 547/550 looper letters, 68 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2023-08-26 07:49:28,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 108 transitions, 407 flow [2023-08-26 07:49:28,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:49:28,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:49:28,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 825 transitions. [2023-08-26 07:49:28,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-26 07:49:28,712 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 825 transitions. [2023-08-26 07:49:28,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 825 transitions. [2023-08-26 07:49:28,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:49:28,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 825 transitions. [2023-08-26 07:49:28,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 0 states have call successors, (0), 0 states 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 07:49:28,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 07:49:28,716 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 07:49:28,716 INFO L175 Difference]: Start difference. First operand has 105 places, 97 transitions, 240 flow. Second operand 3 states and 825 transitions. [2023-08-26 07:49:28,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 108 transitions, 407 flow [2023-08-26 07:49:28,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 108 transitions, 403 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:49:28,719 INFO L231 Difference]: Finished difference. Result has 104 places, 96 transitions, 238 flow [2023-08-26 07:49:28,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=104, PETRI_TRANSITIONS=96} [2023-08-26 07:49:28,719 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -45 predicate places. [2023-08-26 07:49:28,719 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 96 transitions, 238 flow [2023-08-26 07:49:28,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states 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 07:49:28,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:28,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:49:28,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 07:49:28,720 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-26 07:49:28,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:28,720 INFO L85 PathProgramCache]: Analyzing trace with hash 88842373, now seen corresponding path program 1 times [2023-08-26 07:49:28,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:28,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590365404] [2023-08-26 07:49:28,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:28,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:28,746 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 07:49:28,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:49:28,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590365404] [2023-08-26 07:49:28,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590365404] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:49:28,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:49:28,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:49:28,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087907909] [2023-08-26 07:49:28,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:49:28,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:49:28,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:49:28,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:49:28,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:49:28,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 550 [2023-08-26 07:49:28,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 96 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 0 states 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 07:49:28,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:49:28,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 550 [2023-08-26 07:49:28,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:49:29,138 INFO L124 PetriNetUnfolderBase]: 3604/6915 cut-off events. [2023-08-26 07:49:29,138 INFO L125 PetriNetUnfolderBase]: For 1344/1344 co-relation queries the response was YES. [2023-08-26 07:49:29,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14459 conditions, 6915 events. 3604/6915 cut-off events. For 1344/1344 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 45820 event pairs, 2301 based on Foata normal form. 0/6360 useless extension candidates. Maximal degree in co-relation 10573. Up to 4125 conditions per place. [2023-08-26 07:49:29,162 INFO L140 encePairwiseOnDemand]: 534/550 looper letters, 108 selfloop transitions, 12 changer transitions 0/151 dead transitions. [2023-08-26 07:49:29,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 151 transitions, 615 flow [2023-08-26 07:49:29,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:49:29,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:49:29,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 901 transitions. [2023-08-26 07:49:29,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546060606060606 [2023-08-26 07:49:29,165 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 901 transitions. [2023-08-26 07:49:29,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 901 transitions. [2023-08-26 07:49:29,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:49:29,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 901 transitions. [2023-08-26 07:49:29,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.3333333333333) internal successors, (901), 3 states have internal predecessors, (901), 0 states have call successors, (0), 0 states 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 07:49:29,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 07:49:29,168 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 07:49:29,169 INFO L175 Difference]: Start difference. First operand has 104 places, 96 transitions, 238 flow. Second operand 3 states and 901 transitions. [2023-08-26 07:49:29,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 151 transitions, 615 flow [2023-08-26 07:49:29,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 151 transitions, 609 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:49:29,171 INFO L231 Difference]: Finished difference. Result has 106 places, 108 transitions, 338 flow [2023-08-26 07:49:29,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=106, PETRI_TRANSITIONS=108} [2023-08-26 07:49:29,172 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -43 predicate places. [2023-08-26 07:49:29,172 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 108 transitions, 338 flow [2023-08-26 07:49:29,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 0 states 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 07:49:29,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:29,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:49:29,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 07:49:29,172 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-26 07:49:29,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:29,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1080870638, now seen corresponding path program 1 times [2023-08-26 07:49:29,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:29,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573423031] [2023-08-26 07:49:29,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:29,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:29,199 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 07:49:29,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:49:29,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573423031] [2023-08-26 07:49:29,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573423031] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:49:29,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:49:29,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:49:29,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100361860] [2023-08-26 07:49:29,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:49:29,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:49:29,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:49:29,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:49:29,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:49:29,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 550 [2023-08-26 07:49:29,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 108 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 265.3333333333333) internal successors, (796), 3 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 07:49:29,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:49:29,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 550 [2023-08-26 07:49:29,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:49:29,616 INFO L124 PetriNetUnfolderBase]: 3563/6745 cut-off events. [2023-08-26 07:49:29,616 INFO L125 PetriNetUnfolderBase]: For 3319/3343 co-relation queries the response was YES. [2023-08-26 07:49:29,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16266 conditions, 6745 events. 3563/6745 cut-off events. For 3319/3343 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 43780 event pairs, 3072 based on Foata normal form. 0/6331 useless extension candidates. Maximal degree in co-relation 12071. Up to 5691 conditions per place. [2023-08-26 07:49:29,642 INFO L140 encePairwiseOnDemand]: 543/550 looper letters, 102 selfloop transitions, 9 changer transitions 0/142 dead transitions. [2023-08-26 07:49:29,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 142 transitions, 677 flow [2023-08-26 07:49:29,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:49:29,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:49:29,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 869 transitions. [2023-08-26 07:49:29,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2023-08-26 07:49:29,644 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 869 transitions. [2023-08-26 07:49:29,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 869 transitions. [2023-08-26 07:49:29,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:49:29,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 869 transitions. [2023-08-26 07:49:29,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 0 states have call successors, (0), 0 states 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 07:49:29,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 07:49:29,648 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 07:49:29,648 INFO L175 Difference]: Start difference. First operand has 106 places, 108 transitions, 338 flow. Second operand 3 states and 869 transitions. [2023-08-26 07:49:29,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 142 transitions, 677 flow [2023-08-26 07:49:29,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 142 transitions, 641 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:49:29,655 INFO L231 Difference]: Finished difference. Result has 107 places, 115 transitions, 383 flow [2023-08-26 07:49:29,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=383, PETRI_PLACES=107, PETRI_TRANSITIONS=115} [2023-08-26 07:49:29,655 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -42 predicate places. [2023-08-26 07:49:29,656 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 115 transitions, 383 flow [2023-08-26 07:49:29,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 265.3333333333333) internal successors, (796), 3 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 07:49:29,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:29,656 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:49:29,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-26 07:49:29,656 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-26 07:49:29,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:29,657 INFO L85 PathProgramCache]: Analyzing trace with hash 742446814, now seen corresponding path program 1 times [2023-08-26 07:49:29,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:29,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706066534] [2023-08-26 07:49:29,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:29,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:29,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:49:29,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:49:29,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706066534] [2023-08-26 07:49:29,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706066534] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:49:29,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:49:29,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:49:29,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381747153] [2023-08-26 07:49:29,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:49:29,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:49:29,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:49:29,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:49:29,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:49:29,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 550 [2023-08-26 07:49:29,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 115 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 266.0) internal successors, (798), 3 states have internal predecessors, (798), 0 states have call successors, (0), 0 states 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 07:49:29,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:49:29,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 550 [2023-08-26 07:49:29,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:49:30,204 INFO L124 PetriNetUnfolderBase]: 3505/6675 cut-off events. [2023-08-26 07:49:30,204 INFO L125 PetriNetUnfolderBase]: For 3173/3200 co-relation queries the response was YES. [2023-08-26 07:49:30,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16098 conditions, 6675 events. 3505/6675 cut-off events. For 3173/3200 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 43494 event pairs, 2999 based on Foata normal form. 3/6228 useless extension candidates. Maximal degree in co-relation 12084. Up to 5600 conditions per place. [2023-08-26 07:49:30,229 INFO L140 encePairwiseOnDemand]: 543/550 looper letters, 106 selfloop transitions, 11 changer transitions 0/148 dead transitions. [2023-08-26 07:49:30,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 148 transitions, 723 flow [2023-08-26 07:49:30,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:49:30,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:49:30,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 869 transitions. [2023-08-26 07:49:30,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2023-08-26 07:49:30,231 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 869 transitions. [2023-08-26 07:49:30,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 869 transitions. [2023-08-26 07:49:30,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:49:30,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 869 transitions. [2023-08-26 07:49:30,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 0 states have call successors, (0), 0 states 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 07:49:30,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 07:49:30,236 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 07:49:30,236 INFO L175 Difference]: Start difference. First operand has 107 places, 115 transitions, 383 flow. Second operand 3 states and 869 transitions. [2023-08-26 07:49:30,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 148 transitions, 723 flow [2023-08-26 07:49:30,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 148 transitions, 712 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:49:30,242 INFO L231 Difference]: Finished difference. Result has 109 places, 122 transitions, 453 flow [2023-08-26 07:49:30,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=453, PETRI_PLACES=109, PETRI_TRANSITIONS=122} [2023-08-26 07:49:30,243 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -40 predicate places. [2023-08-26 07:49:30,243 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 122 transitions, 453 flow [2023-08-26 07:49:30,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.0) internal successors, (798), 3 states have internal predecessors, (798), 0 states have call successors, (0), 0 states 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 07:49:30,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:30,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:49:30,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-26 07:49:30,244 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr7ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-26 07:49:30,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:30,244 INFO L85 PathProgramCache]: Analyzing trace with hash -2069540853, now seen corresponding path program 1 times [2023-08-26 07:49:30,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:30,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829095109] [2023-08-26 07:49:30,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:30,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:30,275 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 07:49:30,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:49:30,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829095109] [2023-08-26 07:49:30,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829095109] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:49:30,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:49:30,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:49:30,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077334208] [2023-08-26 07:49:30,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:49:30,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:49:30,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:49:30,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:49:30,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:49:30,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 550 [2023-08-26 07:49:30,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 122 transitions, 453 flow. Second operand has 3 states, 3 states have (on average 267.3333333333333) internal successors, (802), 3 states have internal predecessors, (802), 0 states have call successors, (0), 0 states 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 07:49:30,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:49:30,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 550 [2023-08-26 07:49:30,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:49:30,777 INFO L124 PetriNetUnfolderBase]: 3506/6709 cut-off events. [2023-08-26 07:49:30,778 INFO L125 PetriNetUnfolderBase]: For 4212/4287 co-relation queries the response was YES. [2023-08-26 07:49:30,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16801 conditions, 6709 events. 3506/6709 cut-off events. For 4212/4287 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 43632 event pairs, 2782 based on Foata normal form. 3/6334 useless extension candidates. Maximal degree in co-relation 12703. Up to 5311 conditions per place. [2023-08-26 07:49:30,801 INFO L140 encePairwiseOnDemand]: 542/550 looper letters, 112 selfloop transitions, 12 changer transitions 5/160 dead transitions. [2023-08-26 07:49:30,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 160 transitions, 853 flow [2023-08-26 07:49:30,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:49:30,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:49:30,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 870 transitions. [2023-08-26 07:49:30,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2023-08-26 07:49:30,804 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 870 transitions. [2023-08-26 07:49:30,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 870 transitions. [2023-08-26 07:49:30,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:49:30,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 870 transitions. [2023-08-26 07:49:30,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.0) internal successors, (870), 3 states have internal predecessors, (870), 0 states have call successors, (0), 0 states 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 07:49:30,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 07:49:30,808 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 07:49:30,808 INFO L175 Difference]: Start difference. First operand has 109 places, 122 transitions, 453 flow. Second operand 3 states and 870 transitions. [2023-08-26 07:49:30,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 160 transitions, 853 flow [2023-08-26 07:49:30,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 160 transitions, 839 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:49:30,817 INFO L231 Difference]: Finished difference. Result has 112 places, 128 transitions, 543 flow [2023-08-26 07:49:30,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=543, PETRI_PLACES=112, PETRI_TRANSITIONS=128} [2023-08-26 07:49:30,817 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -37 predicate places. [2023-08-26 07:49:30,817 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 128 transitions, 543 flow [2023-08-26 07:49:30,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 267.3333333333333) internal successors, (802), 3 states have internal predecessors, (802), 0 states have call successors, (0), 0 states 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 07:49:30,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:30,818 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:49:30,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-26 07:49:30,818 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr7ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-26 07:49:30,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:30,818 INFO L85 PathProgramCache]: Analyzing trace with hash -75837699, now seen corresponding path program 1 times [2023-08-26 07:49:30,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:30,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613068144] [2023-08-26 07:49:30,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:30,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:30,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:49:30,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:49:30,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613068144] [2023-08-26 07:49:30,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613068144] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:49:30,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:49:30,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:49:30,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124622530] [2023-08-26 07:49:30,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:49:30,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:49:30,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:49:30,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:49:30,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:49:30,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 550 [2023-08-26 07:49:30,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 128 transitions, 543 flow. Second operand has 3 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 0 states have call successors, (0), 0 states 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 07:49:30,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:49:30,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 550 [2023-08-26 07:49:30,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:49:31,297 INFO L124 PetriNetUnfolderBase]: 3378/6530 cut-off events. [2023-08-26 07:49:31,297 INFO L125 PetriNetUnfolderBase]: For 5927/6029 co-relation queries the response was YES. [2023-08-26 07:49:31,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17295 conditions, 6530 events. 3378/6530 cut-off events. For 5927/6029 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 42498 event pairs, 2756 based on Foata normal form. 3/6275 useless extension candidates. Maximal degree in co-relation 13480. Up to 5387 conditions per place. [2023-08-26 07:49:31,323 INFO L140 encePairwiseOnDemand]: 543/550 looper letters, 109 selfloop transitions, 13 changer transitions 9/162 dead transitions. [2023-08-26 07:49:31,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 162 transitions, 943 flow [2023-08-26 07:49:31,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:49:31,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:49:31,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 869 transitions. [2023-08-26 07:49:31,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2023-08-26 07:49:31,325 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 869 transitions. [2023-08-26 07:49:31,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 869 transitions. [2023-08-26 07:49:31,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:49:31,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 869 transitions. [2023-08-26 07:49:31,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 0 states have call successors, (0), 0 states 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 07:49:31,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 07:49:31,329 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 07:49:31,330 INFO L175 Difference]: Start difference. First operand has 112 places, 128 transitions, 543 flow. Second operand 3 states and 869 transitions. [2023-08-26 07:49:31,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 162 transitions, 943 flow [2023-08-26 07:49:31,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 162 transitions, 899 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-26 07:49:31,344 INFO L231 Difference]: Finished difference. Result has 113 places, 130 transitions, 587 flow [2023-08-26 07:49:31,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=587, PETRI_PLACES=113, PETRI_TRANSITIONS=130} [2023-08-26 07:49:31,345 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -36 predicate places. [2023-08-26 07:49:31,345 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 130 transitions, 587 flow [2023-08-26 07:49:31,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 0 states have call successors, (0), 0 states 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 07:49:31,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:31,346 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:49:31,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-26 07:49:31,346 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-26 07:49:31,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:31,346 INFO L85 PathProgramCache]: Analyzing trace with hash 885962590, now seen corresponding path program 1 times [2023-08-26 07:49:31,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:31,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636282941] [2023-08-26 07:49:31,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:31,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:31,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:49:31,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:49:31,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636282941] [2023-08-26 07:49:31,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636282941] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:49:31,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:49:31,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 07:49:31,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338804990] [2023-08-26 07:49:31,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:49:31,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 07:49:31,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:49:31,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 07:49:31,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 07:49:31,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 550 [2023-08-26 07:49:31,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 130 transitions, 587 flow. Second operand has 4 states, 4 states have (on average 246.25) internal successors, (985), 4 states have internal predecessors, (985), 0 states have call successors, (0), 0 states 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 07:49:31,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:49:31,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 550 [2023-08-26 07:49:31,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:49:31,966 INFO L124 PetriNetUnfolderBase]: 2087/4997 cut-off events. [2023-08-26 07:49:31,966 INFO L125 PetriNetUnfolderBase]: For 6855/7008 co-relation queries the response was YES. [2023-08-26 07:49:31,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13269 conditions, 4997 events. 2087/4997 cut-off events. For 6855/7008 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 35499 event pairs, 645 based on Foata normal form. 291/5141 useless extension candidates. Maximal degree in co-relation 10458. Up to 2204 conditions per place. [2023-08-26 07:49:31,985 INFO L140 encePairwiseOnDemand]: 531/550 looper letters, 77 selfloop transitions, 19 changer transitions 8/161 dead transitions. [2023-08-26 07:49:31,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 161 transitions, 959 flow [2023-08-26 07:49:31,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:49:31,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:49:31,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1034 transitions. [2023-08-26 07:49:31,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47 [2023-08-26 07:49:31,987 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1034 transitions. [2023-08-26 07:49:31,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1034 transitions. [2023-08-26 07:49:31,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:49:31,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1034 transitions. [2023-08-26 07:49:31,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 258.5) internal successors, (1034), 4 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states 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 07:49:31,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 550.0) internal successors, (2750), 5 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states 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 07:49:31,992 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 550.0) internal successors, (2750), 5 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states 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 07:49:31,992 INFO L175 Difference]: Start difference. First operand has 113 places, 130 transitions, 587 flow. Second operand 4 states and 1034 transitions. [2023-08-26 07:49:31,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 161 transitions, 959 flow [2023-08-26 07:49:32,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 161 transitions, 923 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-26 07:49:32,005 INFO L231 Difference]: Finished difference. Result has 115 places, 132 transitions, 626 flow [2023-08-26 07:49:32,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=626, PETRI_PLACES=115, PETRI_TRANSITIONS=132} [2023-08-26 07:49:32,005 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -34 predicate places. [2023-08-26 07:49:32,005 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 132 transitions, 626 flow [2023-08-26 07:49:32,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 246.25) internal successors, (985), 4 states have internal predecessors, (985), 0 states have call successors, (0), 0 states 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 07:49:32,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:32,006 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:49:32,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-26 07:49:32,006 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-26 07:49:32,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:32,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1078562032, now seen corresponding path program 2 times [2023-08-26 07:49:32,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:32,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744549490] [2023-08-26 07:49:32,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:32,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:32,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:49:32,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:49:32,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744549490] [2023-08-26 07:49:32,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744549490] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:49:32,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:49:32,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 07:49:32,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066017689] [2023-08-26 07:49:32,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:49:32,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 07:49:32,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:49:32,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 07:49:32,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 07:49:32,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 550 [2023-08-26 07:49:32,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 132 transitions, 626 flow. Second operand has 5 states, 5 states have (on average 238.6) internal successors, (1193), 5 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states 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 07:49:32,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:49:32,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 550 [2023-08-26 07:49:32,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:49:32,464 INFO L124 PetriNetUnfolderBase]: 749/2165 cut-off events. [2023-08-26 07:49:32,465 INFO L125 PetriNetUnfolderBase]: For 1884/1887 co-relation queries the response was YES. [2023-08-26 07:49:32,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5633 conditions, 2165 events. 749/2165 cut-off events. For 1884/1887 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 13346 event pairs, 214 based on Foata normal form. 105/2258 useless extension candidates. Maximal degree in co-relation 2907. Up to 1120 conditions per place. [2023-08-26 07:49:32,469 INFO L140 encePairwiseOnDemand]: 545/550 looper letters, 0 selfloop transitions, 0 changer transitions 112/112 dead transitions. [2023-08-26 07:49:32,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 112 transitions, 591 flow [2023-08-26 07:49:32,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:49:32,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:49:32,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1004 transitions. [2023-08-26 07:49:32,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45636363636363636 [2023-08-26 07:49:32,472 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1004 transitions. [2023-08-26 07:49:32,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1004 transitions. [2023-08-26 07:49:32,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:49:32,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1004 transitions. [2023-08-26 07:49:32,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states 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 07:49:32,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 550.0) internal successors, (2750), 5 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states 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 07:49:32,475 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 550.0) internal successors, (2750), 5 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states 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 07:49:32,475 INFO L175 Difference]: Start difference. First operand has 115 places, 132 transitions, 626 flow. Second operand 4 states and 1004 transitions. [2023-08-26 07:49:32,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 112 transitions, 591 flow [2023-08-26 07:49:32,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 112 transitions, 516 flow, removed 21 selfloop flow, removed 11 redundant places. [2023-08-26 07:49:32,482 INFO L231 Difference]: Finished difference. Result has 99 places, 0 transitions, 0 flow [2023-08-26 07:49:32,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=99, PETRI_TRANSITIONS=0} [2023-08-26 07:49:32,483 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -50 predicate places. [2023-08-26 07:49:32,483 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 0 transitions, 0 flow [2023-08-26 07:49:32,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 238.6) internal successors, (1193), 5 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states 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 07:49:32,484 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (32 of 33 remaining) [2023-08-26 07:49:32,484 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2023-08-26 07:49:32,484 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONASSERT (30 of 33 remaining) [2023-08-26 07:49:32,484 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2023-08-26 07:49:32,484 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2023-08-26 07:49:32,484 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2023-08-26 07:49:32,485 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2023-08-26 07:49:32,485 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2023-08-26 07:49:32,485 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2023-08-26 07:49:32,485 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (23 of 33 remaining) [2023-08-26 07:49:32,485 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2023-08-26 07:49:32,485 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2023-08-26 07:49:32,485 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2023-08-26 07:49:32,485 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2023-08-26 07:49:32,486 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2023-08-26 07:49:32,486 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2023-08-26 07:49:32,486 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2023-08-26 07:49:32,486 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2023-08-26 07:49:32,486 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2023-08-26 07:49:32,486 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2023-08-26 07:49:32,486 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONASSERT (12 of 33 remaining) [2023-08-26 07:49:32,486 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2023-08-26 07:49:32,486 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2023-08-26 07:49:32,487 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2023-08-26 07:49:32,487 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2023-08-26 07:49:32,487 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2023-08-26 07:49:32,487 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2023-08-26 07:49:32,487 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2023-08-26 07:49:32,487 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONASSERT (4 of 33 remaining) [2023-08-26 07:49:32,487 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2023-08-26 07:49:32,487 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2023-08-26 07:49:32,488 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2023-08-26 07:49:32,488 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2023-08-26 07:49:32,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-26 07:49:32,488 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:49:32,489 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,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-26 07:49:32,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 339 transitions, 696 flow [2023-08-26 07:49:32,552 INFO L124 PetriNetUnfolderBase]: 88/612 cut-off events. [2023-08-26 07:49:32,552 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:49:32,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 626 conditions, 612 events. 88/612 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3191 event pairs, 0 based on Foata normal form. 0/476 useless extension candidates. Maximal degree in co-relation 375. Up to 9 conditions per place. [2023-08-26 07:49:32,559 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 339 transitions, 696 flow [2023-08-26 07:49:32,563 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 298 places, 339 transitions, 696 flow [2023-08-26 07:49:32,563 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:49:32,563 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 298 places, 339 transitions, 696 flow [2023-08-26 07:49:32,563 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 298 places, 339 transitions, 696 flow [2023-08-26 07:49:32,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 339 transitions, 696 flow [2023-08-26 07:49:32,624 INFO L124 PetriNetUnfolderBase]: 88/612 cut-off events. [2023-08-26 07:49:32,624 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:49:32,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 626 conditions, 612 events. 88/612 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3191 event pairs, 0 based on Foata normal form. 0/476 useless extension candidates. Maximal degree in co-relation 375. Up to 9 conditions per place. [2023-08-26 07:49:32,652 INFO L119 LiptonReduction]: Number of co-enabled transitions 59500 [2023-08-26 07:49:36,208 INFO L134 LiptonReduction]: Checked pairs total: 259108 [2023-08-26 07:49:36,208 INFO L136 LiptonReduction]: Total number of compositions: 216 [2023-08-26 07:49:36,209 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 07:49:36,210 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;@72ac7535, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:49:36,210 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 07:49:36,219 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:49:36,219 INFO L124 PetriNetUnfolderBase]: 27/150 cut-off events. [2023-08-26 07:49:36,219 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 07:49:36,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:36,219 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 07:49:36,219 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:49:36,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:36,220 INFO L85 PathProgramCache]: Analyzing trace with hash 672541831, now seen corresponding path program 1 times [2023-08-26 07:49:36,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:36,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100942012] [2023-08-26 07:49:36,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:36,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:49:36,231 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 07:49:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:49:36,242 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 07:49:36,242 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 07:49:36,243 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 07:49:36,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-26 07:49:36,243 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 07:49:36,243 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-26 07:49:36,243 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 07:49:36,243 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 07:49:36,273 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 07:49:36,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 426 transitions, 882 flow [2023-08-26 07:49:36,398 INFO L124 PetriNetUnfolderBase]: 128/896 cut-off events. [2023-08-26 07:49:36,399 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 07:49:36,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 924 conditions, 896 events. 128/896 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4887 event pairs, 1 based on Foata normal form. 0/700 useless extension candidates. Maximal degree in co-relation 620. Up to 16 conditions per place. [2023-08-26 07:49:36,411 INFO L82 GeneralOperation]: Start removeDead. Operand has 374 places, 426 transitions, 882 flow [2023-08-26 07:49:36,422 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 426 transitions, 882 flow [2023-08-26 07:49:36,422 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:49:36,422 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 374 places, 426 transitions, 882 flow [2023-08-26 07:49:36,422 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 374 places, 426 transitions, 882 flow [2023-08-26 07:49:36,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 426 transitions, 882 flow [2023-08-26 07:49:36,554 INFO L124 PetriNetUnfolderBase]: 128/896 cut-off events. [2023-08-26 07:49:36,555 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 07:49:36,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 924 conditions, 896 events. 128/896 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4887 event pairs, 1 based on Foata normal form. 0/700 useless extension candidates. Maximal degree in co-relation 620. Up to 16 conditions per place. [2023-08-26 07:49:36,616 INFO L119 LiptonReduction]: Number of co-enabled transitions 111690 [2023-08-26 07:49:40,206 INFO L134 LiptonReduction]: Checked pairs total: 468328 [2023-08-26 07:49:40,206 INFO L136 LiptonReduction]: Total number of compositions: 254 [2023-08-26 07:49:40,208 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:49:40,208 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;@72ac7535, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:49:40,208 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-08-26 07:49:40,210 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:49:40,210 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-26 07:49:40,210 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:49:40,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:40,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 07:49:40,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, t_funErr6ASSERT_VIOLATIONDATA_RACE, t_funErr6ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-26 07:49:40,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:40,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1673916850, now seen corresponding path program 1 times [2023-08-26 07:49:40,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:40,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647762018] [2023-08-26 07:49:40,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:40,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:40,227 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 07:49:40,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:49:40,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647762018] [2023-08-26 07:49:40,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647762018] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:49:40,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:49:40,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:49:40,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603436162] [2023-08-26 07:49:40,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:49:40,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:49:40,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:49:40,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:49:40,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:49:40,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 680 [2023-08-26 07:49:40,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 247 transitions, 524 flow. Second operand has 3 states, 3 states have (on average 354.0) internal successors, (1062), 3 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states 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 07:49:40,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:49:40,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 680 [2023-08-26 07:49:40,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand