/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/weaver/clever.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 08:59:44,584 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 08:59:44,664 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 08:59:44,669 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 08:59:44,670 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 08:59:44,700 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 08:59:44,701 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 08:59:44,701 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 08:59:44,702 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 08:59:44,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 08:59:44,705 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 08:59:44,706 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 08:59:44,706 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 08:59:44,707 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 08:59:44,707 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 08:59:44,707 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 08:59:44,708 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 08:59:44,708 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 08:59:44,708 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 08:59:44,708 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 08:59:44,708 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 08:59:44,709 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 08:59:44,709 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 08:59:44,709 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 08:59:44,710 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 08:59:44,710 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 08:59:44,710 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 08:59:44,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 08:59:44,710 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 08:59:44,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 08:59:44,712 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 08:59:44,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 08:59:44,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 08:59:44,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 08:59:44,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 08:59:44,712 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 08:59:45,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 08:59:45,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 08:59:45,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 08:59:45,049 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 08:59:45,049 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 08:59:45,050 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/clever.wvr.c [2023-08-26 08:59:46,241 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 08:59:46,476 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 08:59:46,477 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/clever.wvr.c [2023-08-26 08:59:46,487 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/657a5be69/c2342ba980be4729bb5b60ba7af6f75f/FLAGbc2826ce6 [2023-08-26 08:59:46,503 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/657a5be69/c2342ba980be4729bb5b60ba7af6f75f [2023-08-26 08:59:46,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 08:59:46,509 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 08:59:46,512 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 08:59:46,513 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 08:59:46,515 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 08:59:46,517 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:59:46" (1/1) ... [2023-08-26 08:59:46,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e78e57e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:46, skipping insertion in model container [2023-08-26 08:59:46,518 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:59:46" (1/1) ... [2023-08-26 08:59:46,540 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 08:59:46,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 08:59:46,730 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 08:59:46,772 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 08:59:46,788 INFO L206 MainTranslator]: Completed translation [2023-08-26 08:59:46,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:46 WrapperNode [2023-08-26 08:59:46,788 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 08:59:46,789 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 08:59:46,789 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 08:59:46,789 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 08:59:46,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:46" (1/1) ... [2023-08-26 08:59:46,813 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:46" (1/1) ... [2023-08-26 08:59:46,844 INFO L138 Inliner]: procedures = 19, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 157 [2023-08-26 08:59:46,844 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 08:59:46,845 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 08:59:46,845 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 08:59:46,845 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 08:59:46,853 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:46" (1/1) ... [2023-08-26 08:59:46,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:46" (1/1) ... [2023-08-26 08:59:46,862 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:46" (1/1) ... [2023-08-26 08:59:46,863 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:46" (1/1) ... [2023-08-26 08:59:46,868 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:46" (1/1) ... [2023-08-26 08:59:46,871 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:46" (1/1) ... [2023-08-26 08:59:46,885 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:46" (1/1) ... [2023-08-26 08:59:46,886 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:46" (1/1) ... [2023-08-26 08:59:46,888 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 08:59:46,889 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 08:59:46,889 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 08:59:46,889 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 08:59:46,890 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:46" (1/1) ... [2023-08-26 08:59:46,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 08:59:46,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 08:59:46,918 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 08:59:46,937 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 08:59:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 08:59:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 08:59:46,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 08:59:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 08:59:46,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 08:59:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 08:59:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 08:59:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 08:59:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 08:59:46,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 08:59:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 08:59:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 08:59:46,952 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 08:59:47,054 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 08:59:47,055 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 08:59:47,499 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 08:59:47,508 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 08:59:47,509 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-26 08:59:47,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:59:47 BoogieIcfgContainer [2023-08-26 08:59:47,511 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 08:59:47,513 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 08:59:47,513 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 08:59:47,515 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 08:59:47,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 08:59:46" (1/3) ... [2023-08-26 08:59:47,516 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e82337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:59:47, skipping insertion in model container [2023-08-26 08:59:47,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:46" (2/3) ... [2023-08-26 08:59:47,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e82337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:59:47, skipping insertion in model container [2023-08-26 08:59:47,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:59:47" (3/3) ... [2023-08-26 08:59:47,518 INFO L112 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2023-08-26 08:59:47,533 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 08:59:47,533 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2023-08-26 08:59:47,534 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 08:59:47,594 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 08:59:47,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 278 transitions, 572 flow [2023-08-26 08:59:47,718 INFO L124 PetriNetUnfolderBase]: 12/276 cut-off events. [2023-08-26 08:59:47,718 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 08:59:47,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 276 events. 12/276 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 438 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 200. Up to 2 conditions per place. [2023-08-26 08:59:47,728 INFO L82 GeneralOperation]: Start removeDead. Operand has 273 places, 278 transitions, 572 flow [2023-08-26 08:59:47,737 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 262 places, 267 transitions, 546 flow [2023-08-26 08:59:47,740 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 08:59:47,749 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 262 places, 267 transitions, 546 flow [2023-08-26 08:59:47,751 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 262 places, 267 transitions, 546 flow [2023-08-26 08:59:47,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 267 transitions, 546 flow [2023-08-26 08:59:47,829 INFO L124 PetriNetUnfolderBase]: 12/267 cut-off events. [2023-08-26 08:59:47,829 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 08:59:47,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 267 events. 12/267 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 439 event pairs, 0 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 200. Up to 2 conditions per place. [2023-08-26 08:59:47,837 INFO L119 LiptonReduction]: Number of co-enabled transitions 7006 [2023-08-26 08:59:54,829 INFO L134 LiptonReduction]: Checked pairs total: 13386 [2023-08-26 08:59:54,829 INFO L136 LiptonReduction]: Total number of compositions: 338 [2023-08-26 08:59:54,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 08:59:54,858 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;@7a92654f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 08:59:54,858 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2023-08-26 08:59:54,859 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 08:59:54,859 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 08:59:54,860 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 08:59:54,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:54,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 08:59:54,861 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 08:59:54,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:54,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1041, now seen corresponding path program 1 times [2023-08-26 08:59:54,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:54,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961817459] [2023-08-26 08:59:54,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:54,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:54,957 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 08:59:54,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:54,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961817459] [2023-08-26 08:59:54,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961817459] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:54,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:54,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 08:59:54,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512046300] [2023-08-26 08:59:54,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:54,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 08:59:54,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:54,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 08:59:54,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 08:59:54,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 616 [2023-08-26 08:59:55,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 134 flow. Second operand has 2 states, 2 states have (on average 267.5) internal successors, (535), 2 states have internal predecessors, (535), 0 states have call successors, (0), 0 states 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 08:59:55,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:55,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 616 [2023-08-26 08:59:55,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:55,091 INFO L124 PetriNetUnfolderBase]: 125/244 cut-off events. [2023-08-26 08:59:55,091 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-08-26 08:59:55,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 244 events. 125/244 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 901 event pairs, 87 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 418. Up to 211 conditions per place. [2023-08-26 08:59:55,094 INFO L140 encePairwiseOnDemand]: 581/616 looper letters, 21 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-08-26 08:59:55,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 26 transitions, 106 flow [2023-08-26 08:59:55,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 08:59:55,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 08:59:55,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 590 transitions. [2023-08-26 08:59:55,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4788961038961039 [2023-08-26 08:59:55,113 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 590 transitions. [2023-08-26 08:59:55,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 590 transitions. [2023-08-26 08:59:55,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:55,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 590 transitions. [2023-08-26 08:59:55,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 295.0) internal successors, (590), 2 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 08:59:55,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 616.0) internal successors, (1848), 3 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states 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 08:59:55,129 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 616.0) internal successors, (1848), 3 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states 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 08:59:55,130 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 134 flow. Second operand 2 states and 590 transitions. [2023-08-26 08:59:55,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 26 transitions, 106 flow [2023-08-26 08:59:55,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 26 transitions, 98 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 08:59:55,135 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 56 flow [2023-08-26 08:59:55,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=56, PETRI_PLACES=27, PETRI_TRANSITIONS=26} [2023-08-26 08:59:55,140 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -35 predicate places. [2023-08-26 08:59:55,140 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 56 flow [2023-08-26 08:59:55,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 267.5) internal successors, (535), 2 states have internal predecessors, (535), 0 states have call successors, (0), 0 states 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 08:59:55,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:55,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 08:59:55,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 08:59:55,141 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 08:59:55,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:55,142 INFO L85 PathProgramCache]: Analyzing trace with hash 32455162, now seen corresponding path program 1 times [2023-08-26 08:59:55,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:55,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924035128] [2023-08-26 08:59:55,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:55,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:55,225 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 08:59:55,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:55,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924035128] [2023-08-26 08:59:55,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924035128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:55,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:55,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 08:59:55,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293068047] [2023-08-26 08:59:55,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:55,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 08:59:55,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:55,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 08:59:55,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 08:59:55,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 616 [2023-08-26 08:59:55,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states 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 08:59:55,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:55,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 616 [2023-08-26 08:59:55,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:55,279 INFO L124 PetriNetUnfolderBase]: 130/245 cut-off events. [2023-08-26 08:59:55,279 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-26 08:59:55,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 245 events. 130/245 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 882 event pairs, 40 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 472. Up to 214 conditions per place. [2023-08-26 08:59:55,281 INFO L140 encePairwiseOnDemand]: 612/616 looper letters, 24 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-08-26 08:59:55,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 29 transitions, 115 flow [2023-08-26 08:59:55,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 08:59:55,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 08:59:55,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 802 transitions. [2023-08-26 08:59:55,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43398268398268397 [2023-08-26 08:59:55,283 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 802 transitions. [2023-08-26 08:59:55,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 802 transitions. [2023-08-26 08:59:55,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:55,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 802 transitions. [2023-08-26 08:59:55,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 08:59:55,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 08:59:55,291 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 08:59:55,291 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 56 flow. Second operand 3 states and 802 transitions. [2023-08-26 08:59:55,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 29 transitions, 115 flow [2023-08-26 08:59:55,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 29 transitions, 115 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 08:59:55,292 INFO L231 Difference]: Finished difference. Result has 28 places, 26 transitions, 66 flow [2023-08-26 08:59:55,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=28, PETRI_TRANSITIONS=26} [2023-08-26 08:59:55,293 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -34 predicate places. [2023-08-26 08:59:55,293 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 26 transitions, 66 flow [2023-08-26 08:59:55,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states 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 08:59:55,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:55,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 08:59:55,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 08:59:55,294 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 08:59:55,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:55,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1125012953, now seen corresponding path program 1 times [2023-08-26 08:59:55,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:55,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088735725] [2023-08-26 08:59:55,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:55,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:55,342 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 08:59:55,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:55,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088735725] [2023-08-26 08:59:55,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088735725] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:55,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:55,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 08:59:55,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24203524] [2023-08-26 08:59:55,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:55,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 08:59:55,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:55,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 08:59:55,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 08:59:55,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 616 [2023-08-26 08:59:55,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 26 transitions, 66 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 08:59:55,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:55,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 616 [2023-08-26 08:59:55,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:55,388 INFO L124 PetriNetUnfolderBase]: 130/229 cut-off events. [2023-08-26 08:59:55,388 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-26 08:59:55,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 229 events. 130/229 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 727 event pairs, 81 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 494. Up to 219 conditions per place. [2023-08-26 08:59:55,390 INFO L140 encePairwiseOnDemand]: 613/616 looper letters, 22 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-08-26 08:59:55,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 24 transitions, 108 flow [2023-08-26 08:59:55,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 08:59:55,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 08:59:55,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 788 transitions. [2023-08-26 08:59:55,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4264069264069264 [2023-08-26 08:59:55,393 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 788 transitions. [2023-08-26 08:59:55,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 788 transitions. [2023-08-26 08:59:55,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:55,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 788 transitions. [2023-08-26 08:59:55,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states 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 08:59:55,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 08:59:55,399 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 08:59:55,399 INFO L175 Difference]: Start difference. First operand has 28 places, 26 transitions, 66 flow. Second operand 3 states and 788 transitions. [2023-08-26 08:59:55,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 24 transitions, 108 flow [2023-08-26 08:59:55,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 24 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 08:59:55,401 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 64 flow [2023-08-26 08:59:55,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2023-08-26 08:59:55,401 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -34 predicate places. [2023-08-26 08:59:55,402 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 64 flow [2023-08-26 08:59:55,402 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 08:59:55,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:55,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:55,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 08:59:55,403 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 08:59:55,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:55,403 INFO L85 PathProgramCache]: Analyzing trace with hash 515670125, now seen corresponding path program 1 times [2023-08-26 08:59:55,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:55,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660471381] [2023-08-26 08:59:55,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:55,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:55,441 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 08:59:55,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:55,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660471381] [2023-08-26 08:59:55,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660471381] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:55,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:55,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 08:59:55,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922104793] [2023-08-26 08:59:55,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:55,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 08:59:55,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:55,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 08:59:55,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 08:59:55,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 616 [2023-08-26 08:59:55,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 08:59:55,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:55,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 616 [2023-08-26 08:59:55,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:55,497 INFO L124 PetriNetUnfolderBase]: 145/244 cut-off events. [2023-08-26 08:59:55,498 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-26 08:59:55,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 244 events. 145/244 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 733 event pairs, 80 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 547. Up to 215 conditions per place. [2023-08-26 08:59:55,499 INFO L140 encePairwiseOnDemand]: 612/616 looper letters, 29 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2023-08-26 08:59:55,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 32 transitions, 149 flow [2023-08-26 08:59:55,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 08:59:55,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 08:59:55,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 760 transitions. [2023-08-26 08:59:55,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41125541125541126 [2023-08-26 08:59:55,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 760 transitions. [2023-08-26 08:59:55,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 760 transitions. [2023-08-26 08:59:55,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:55,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 760 transitions. [2023-08-26 08:59:55,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 08:59:55,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 08:59:55,509 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 08:59:55,509 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 64 flow. Second operand 3 states and 760 transitions. [2023-08-26 08:59:55,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 32 transitions, 149 flow [2023-08-26 08:59:55,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 32 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 08:59:55,510 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 76 flow [2023-08-26 08:59:55,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-08-26 08:59:55,511 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -33 predicate places. [2023-08-26 08:59:55,511 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 76 flow [2023-08-26 08:59:55,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 08:59:55,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:55,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:55,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 08:59:55,512 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 08:59:55,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:55,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1115535242, now seen corresponding path program 1 times [2023-08-26 08:59:55,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:55,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916961934] [2023-08-26 08:59:55,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:55,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:55,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:55,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:55,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916961934] [2023-08-26 08:59:55,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916961934] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:55,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:55,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 08:59:55,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417899363] [2023-08-26 08:59:55,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:55,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 08:59:55,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:55,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 08:59:55,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 08:59:55,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 616 [2023-08-26 08:59:55,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states 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 08:59:55,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:55,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 616 [2023-08-26 08:59:55,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:55,876 INFO L124 PetriNetUnfolderBase]: 281/471 cut-off events. [2023-08-26 08:59:55,876 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-26 08:59:55,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1138 conditions, 471 events. 281/471 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1685 event pairs, 94 based on Foata normal form. 1/392 useless extension candidates. Maximal degree in co-relation 1133. Up to 262 conditions per place. [2023-08-26 08:59:55,882 INFO L140 encePairwiseOnDemand]: 612/616 looper letters, 39 selfloop transitions, 3 changer transitions 1/43 dead transitions. [2023-08-26 08:59:55,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 43 transitions, 217 flow [2023-08-26 08:59:55,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 08:59:55,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 08:59:55,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 811 transitions. [2023-08-26 08:59:55,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43885281385281383 [2023-08-26 08:59:55,889 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 811 transitions. [2023-08-26 08:59:55,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 811 transitions. [2023-08-26 08:59:55,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:55,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 811 transitions. [2023-08-26 08:59:55,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states 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 08:59:55,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 08:59:55,896 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 08:59:55,896 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 76 flow. Second operand 3 states and 811 transitions. [2023-08-26 08:59:55,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 43 transitions, 217 flow [2023-08-26 08:59:55,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 43 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 08:59:55,901 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 92 flow [2023-08-26 08:59:55,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-08-26 08:59:55,903 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -31 predicate places. [2023-08-26 08:59:55,903 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 92 flow [2023-08-26 08:59:55,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states 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 08:59:55,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:55,904 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:55,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 08:59:55,905 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 08:59:55,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:55,905 INFO L85 PathProgramCache]: Analyzing trace with hash 739266523, now seen corresponding path program 1 times [2023-08-26 08:59:55,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:55,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510965768] [2023-08-26 08:59:55,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:55,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:55,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:55,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:55,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510965768] [2023-08-26 08:59:55,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510965768] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:55,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:55,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 08:59:55,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382193405] [2023-08-26 08:59:55,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:55,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 08:59:55,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:55,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 08:59:55,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 08:59:55,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 616 [2023-08-26 08:59:55,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 253.25) internal successors, (1013), 4 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states 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 08:59:55,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:55,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 616 [2023-08-26 08:59:55,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:56,152 INFO L124 PetriNetUnfolderBase]: 483/812 cut-off events. [2023-08-26 08:59:56,153 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2023-08-26 08:59:56,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2012 conditions, 812 events. 483/812 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3284 event pairs, 93 based on Foata normal form. 0/718 useless extension candidates. Maximal degree in co-relation 2005. Up to 361 conditions per place. [2023-08-26 08:59:56,158 INFO L140 encePairwiseOnDemand]: 610/616 looper letters, 64 selfloop transitions, 7 changer transitions 2/73 dead transitions. [2023-08-26 08:59:56,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 73 transitions, 382 flow [2023-08-26 08:59:56,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 08:59:56,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 08:59:56,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1310 transitions. [2023-08-26 08:59:56,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4253246753246753 [2023-08-26 08:59:56,162 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1310 transitions. [2023-08-26 08:59:56,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1310 transitions. [2023-08-26 08:59:56,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:56,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1310 transitions. [2023-08-26 08:59:56,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states 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 08:59:56,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 616.0) internal successors, (3696), 6 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 08:59:56,173 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 616.0) internal successors, (3696), 6 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 08:59:56,174 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 92 flow. Second operand 5 states and 1310 transitions. [2023-08-26 08:59:56,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 73 transitions, 382 flow [2023-08-26 08:59:56,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 73 transitions, 374 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 08:59:56,180 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 142 flow [2023-08-26 08:59:56,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2023-08-26 08:59:56,183 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -25 predicate places. [2023-08-26 08:59:56,185 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 142 flow [2023-08-26 08:59:56,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 253.25) internal successors, (1013), 4 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states 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 08:59:56,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:56,186 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:56,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 08:59:56,187 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 08:59:56,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:56,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1882498831, now seen corresponding path program 2 times [2023-08-26 08:59:56,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:56,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481520321] [2023-08-26 08:59:56,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:56,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:56,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:56,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:56,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481520321] [2023-08-26 08:59:56,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481520321] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 08:59:56,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140638951] [2023-08-26 08:59:56,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 08:59:56,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 08:59:56,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 08:59:56,269 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 08:59:56,298 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 08:59:56,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 08:59:56,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 08:59:56,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 08:59:56,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 08:59:56,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:56,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 08:59:56,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:56,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140638951] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 08:59:56,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 08:59:56,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-26 08:59:56,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473455296] [2023-08-26 08:59:56,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 08:59:56,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 08:59:56,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:56,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 08:59:56,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 08:59:56,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 616 [2023-08-26 08:59:56,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 253.25) internal successors, (1013), 4 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states 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 08:59:56,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:56,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 616 [2023-08-26 08:59:56,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:56,619 INFO L124 PetriNetUnfolderBase]: 462/773 cut-off events. [2023-08-26 08:59:56,619 INFO L125 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2023-08-26 08:59:56,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2193 conditions, 773 events. 462/773 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3010 event pairs, 40 based on Foata normal form. 14/787 useless extension candidates. Maximal degree in co-relation 2183. Up to 286 conditions per place. [2023-08-26 08:59:56,624 INFO L140 encePairwiseOnDemand]: 610/616 looper letters, 51 selfloop transitions, 11 changer transitions 6/68 dead transitions. [2023-08-26 08:59:56,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 68 transitions, 408 flow [2023-08-26 08:59:56,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 08:59:56,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 08:59:56,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1301 transitions. [2023-08-26 08:59:56,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4224025974025974 [2023-08-26 08:59:56,628 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1301 transitions. [2023-08-26 08:59:56,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1301 transitions. [2023-08-26 08:59:56,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:56,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1301 transitions. [2023-08-26 08:59:56,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 260.2) internal successors, (1301), 5 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states 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 08:59:56,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 616.0) internal successors, (3696), 6 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 08:59:56,635 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 616.0) internal successors, (3696), 6 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 08:59:56,636 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 142 flow. Second operand 5 states and 1301 transitions. [2023-08-26 08:59:56,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 68 transitions, 408 flow [2023-08-26 08:59:56,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 68 transitions, 408 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 08:59:56,639 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 209 flow [2023-08-26 08:59:56,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=209, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2023-08-26 08:59:56,640 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -18 predicate places. [2023-08-26 08:59:56,640 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 209 flow [2023-08-26 08:59:56,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 253.25) internal successors, (1013), 4 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states 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 08:59:56,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:56,641 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:56,654 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 08:59:56,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 08:59:56,846 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 08:59:56,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:56,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1483746473, now seen corresponding path program 1 times [2023-08-26 08:59:56,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:56,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412994119] [2023-08-26 08:59:56,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:56,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:56,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 08:59:56,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:56,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412994119] [2023-08-26 08:59:56,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412994119] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:56,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:56,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 08:59:56,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219530045] [2023-08-26 08:59:56,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:56,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 08:59:56,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:56,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 08:59:56,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 08:59:56,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 616 [2023-08-26 08:59:56,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 253.75) internal successors, (1015), 4 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states 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 08:59:56,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:56,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 616 [2023-08-26 08:59:56,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:57,070 INFO L124 PetriNetUnfolderBase]: 604/1001 cut-off events. [2023-08-26 08:59:57,070 INFO L125 PetriNetUnfolderBase]: For 1350/1350 co-relation queries the response was YES. [2023-08-26 08:59:57,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3188 conditions, 1001 events. 604/1001 cut-off events. For 1350/1350 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4100 event pairs, 207 based on Foata normal form. 6/1007 useless extension candidates. Maximal degree in co-relation 3174. Up to 438 conditions per place. [2023-08-26 08:59:57,077 INFO L140 encePairwiseOnDemand]: 610/616 looper letters, 70 selfloop transitions, 11 changer transitions 1/82 dead transitions. [2023-08-26 08:59:57,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 82 transitions, 596 flow [2023-08-26 08:59:57,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 08:59:57,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 08:59:57,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1304 transitions. [2023-08-26 08:59:57,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42337662337662335 [2023-08-26 08:59:57,082 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1304 transitions. [2023-08-26 08:59:57,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1304 transitions. [2023-08-26 08:59:57,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:57,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1304 transitions. [2023-08-26 08:59:57,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 260.8) internal successors, (1304), 5 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states 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 08:59:57,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 616.0) internal successors, (3696), 6 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 08:59:57,090 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 616.0) internal successors, (3696), 6 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 08:59:57,090 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 209 flow. Second operand 5 states and 1304 transitions. [2023-08-26 08:59:57,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 82 transitions, 596 flow [2023-08-26 08:59:57,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 82 transitions, 590 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-26 08:59:57,097 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 315 flow [2023-08-26 08:59:57,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=315, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-08-26 08:59:57,099 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -11 predicate places. [2023-08-26 08:59:57,099 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 315 flow [2023-08-26 08:59:57,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 253.75) internal successors, (1015), 4 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states 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 08:59:57,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:57,100 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:57,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 08:59:57,100 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 08:59:57,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:57,101 INFO L85 PathProgramCache]: Analyzing trace with hash 344331277, now seen corresponding path program 2 times [2023-08-26 08:59:57,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:57,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891999624] [2023-08-26 08:59:57,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:57,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:57,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 08:59:57,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:57,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891999624] [2023-08-26 08:59:57,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891999624] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:57,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:57,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 08:59:57,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798286878] [2023-08-26 08:59:57,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:57,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 08:59:57,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:57,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 08:59:57,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 08:59:57,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 616 [2023-08-26 08:59:57,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 315 flow. Second operand has 4 states, 4 states have (on average 253.75) internal successors, (1015), 4 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states 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 08:59:57,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:57,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 616 [2023-08-26 08:59:57,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:57,321 INFO L124 PetriNetUnfolderBase]: 548/910 cut-off events. [2023-08-26 08:59:57,321 INFO L125 PetriNetUnfolderBase]: For 2054/2054 co-relation queries the response was YES. [2023-08-26 08:59:57,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3128 conditions, 910 events. 548/910 cut-off events. For 2054/2054 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3602 event pairs, 104 based on Foata normal form. 40/950 useless extension candidates. Maximal degree in co-relation 3110. Up to 504 conditions per place. [2023-08-26 08:59:57,328 INFO L140 encePairwiseOnDemand]: 610/616 looper letters, 63 selfloop transitions, 13 changer transitions 5/81 dead transitions. [2023-08-26 08:59:57,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 81 transitions, 635 flow [2023-08-26 08:59:57,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 08:59:57,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 08:59:57,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1303 transitions. [2023-08-26 08:59:57,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42305194805194807 [2023-08-26 08:59:57,332 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1303 transitions. [2023-08-26 08:59:57,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1303 transitions. [2023-08-26 08:59:57,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:57,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1303 transitions. [2023-08-26 08:59:57,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 260.6) internal successors, (1303), 5 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states 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 08:59:57,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 616.0) internal successors, (3696), 6 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 08:59:57,365 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 616.0) internal successors, (3696), 6 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 08:59:57,365 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 315 flow. Second operand 5 states and 1303 transitions. [2023-08-26 08:59:57,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 81 transitions, 635 flow [2023-08-26 08:59:57,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 81 transitions, 625 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-08-26 08:59:57,371 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 355 flow [2023-08-26 08:59:57,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=355, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2023-08-26 08:59:57,373 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2023-08-26 08:59:57,374 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 355 flow [2023-08-26 08:59:57,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 253.75) internal successors, (1015), 4 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states 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 08:59:57,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:57,375 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:57,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 08:59:57,375 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 08:59:57,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:57,376 INFO L85 PathProgramCache]: Analyzing trace with hash -2104379191, now seen corresponding path program 1 times [2023-08-26 08:59:57,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:57,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654008589] [2023-08-26 08:59:57,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:57,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:57,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:57,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:57,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654008589] [2023-08-26 08:59:57,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654008589] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 08:59:57,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581238759] [2023-08-26 08:59:57,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:57,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 08:59:57,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 08:59:57,789 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 08:59:57,816 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 08:59:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:57,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-26 08:59:57,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 08:59:58,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:58,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 08:59:58,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:58,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581238759] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 08:59:58,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 08:59:58,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2023-08-26 08:59:58,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353428170] [2023-08-26 08:59:58,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 08:59:58,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 08:59:58,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:58,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 08:59:58,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2023-08-26 08:59:58,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 616 [2023-08-26 08:59:58,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 355 flow. Second operand has 13 states, 13 states have (on average 243.30769230769232) internal successors, (3163), 13 states have internal predecessors, (3163), 0 states have call successors, (0), 0 states 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 08:59:58,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:58,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 616 [2023-08-26 08:59:58,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:58,954 INFO L124 PetriNetUnfolderBase]: 1153/1930 cut-off events. [2023-08-26 08:59:58,954 INFO L125 PetriNetUnfolderBase]: For 6011/6011 co-relation queries the response was YES. [2023-08-26 08:59:58,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7303 conditions, 1930 events. 1153/1930 cut-off events. For 6011/6011 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 9390 event pairs, 107 based on Foata normal form. 24/1954 useless extension candidates. Maximal degree in co-relation 7282. Up to 681 conditions per place. [2023-08-26 08:59:58,969 INFO L140 encePairwiseOnDemand]: 609/616 looper letters, 118 selfloop transitions, 22 changer transitions 43/183 dead transitions. [2023-08-26 08:59:58,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 183 transitions, 1682 flow [2023-08-26 08:59:58,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 08:59:58,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 08:59:58,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2513 transitions. [2023-08-26 08:59:58,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40795454545454546 [2023-08-26 08:59:58,976 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2513 transitions. [2023-08-26 08:59:58,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2513 transitions. [2023-08-26 08:59:58,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:58,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2513 transitions. [2023-08-26 08:59:58,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 251.3) internal successors, (2513), 10 states have internal predecessors, (2513), 0 states have call successors, (0), 0 states 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 08:59:58,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 616.0) internal successors, (6776), 11 states have internal predecessors, (6776), 0 states have call successors, (0), 0 states 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 08:59:58,990 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 616.0) internal successors, (6776), 11 states have internal predecessors, (6776), 0 states have call successors, (0), 0 states 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 08:59:58,991 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 355 flow. Second operand 10 states and 2513 transitions. [2023-08-26 08:59:58,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 183 transitions, 1682 flow [2023-08-26 08:59:59,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 183 transitions, 1643 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-08-26 08:59:59,006 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 586 flow [2023-08-26 08:59:59,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=586, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2023-08-26 08:59:59,007 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 10 predicate places. [2023-08-26 08:59:59,007 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 586 flow [2023-08-26 08:59:59,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 243.30769230769232) internal successors, (3163), 13 states have internal predecessors, (3163), 0 states have call successors, (0), 0 states 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 08:59:59,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:59,009 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:59,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 08:59:59,214 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,SelfDestructingSolverStorable9 [2023-08-26 08:59:59,216 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 08:59:59,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:59,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1178697621, now seen corresponding path program 2 times [2023-08-26 08:59:59,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:59,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165759910] [2023-08-26 08:59:59,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:59,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:59,632 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:59,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:59,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165759910] [2023-08-26 08:59:59,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165759910] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 08:59:59,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915421880] [2023-08-26 08:59:59,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 08:59:59,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 08:59:59,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 08:59:59,637 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 08:59:59,640 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 08:59:59,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 08:59:59,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 08:59:59,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-26 08:59:59,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 08:59:59,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:59,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:00:00,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:00:00,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915421880] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:00:00,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:00:00,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-26 09:00:00,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838058995] [2023-08-26 09:00:00,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:00:00,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 09:00:00,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:00:00,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 09:00:00,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2023-08-26 09:00:00,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 616 [2023-08-26 09:00:00,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 586 flow. Second operand has 13 states, 13 states have (on average 243.46153846153845) internal successors, (3165), 13 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states 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 09:00:00,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:00:00,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 616 [2023-08-26 09:00:00,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:00:01,353 INFO L124 PetriNetUnfolderBase]: 2686/4497 cut-off events. [2023-08-26 09:00:01,353 INFO L125 PetriNetUnfolderBase]: For 17684/17684 co-relation queries the response was YES. [2023-08-26 09:00:01,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18465 conditions, 4497 events. 2686/4497 cut-off events. For 17684/17684 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 24394 event pairs, 397 based on Foata normal form. 5/4502 useless extension candidates. Maximal degree in co-relation 18437. Up to 1105 conditions per place. [2023-08-26 09:00:01,395 INFO L140 encePairwiseOnDemand]: 610/616 looper letters, 255 selfloop transitions, 75 changer transitions 15/345 dead transitions. [2023-08-26 09:00:01,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 345 transitions, 3543 flow [2023-08-26 09:00:01,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 09:00:01,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 09:00:01,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3791 transitions. [2023-08-26 09:00:01,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4102813852813853 [2023-08-26 09:00:01,405 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3791 transitions. [2023-08-26 09:00:01,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3791 transitions. [2023-08-26 09:00:01,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:00:01,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3791 transitions. [2023-08-26 09:00:01,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 252.73333333333332) internal successors, (3791), 15 states have internal predecessors, (3791), 0 states have call successors, (0), 0 states 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 09:00:01,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 616.0) internal successors, (9856), 16 states have internal predecessors, (9856), 0 states have call successors, (0), 0 states 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 09:00:01,424 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 616.0) internal successors, (9856), 16 states have internal predecessors, (9856), 0 states have call successors, (0), 0 states 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 09:00:01,425 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 586 flow. Second operand 15 states and 3791 transitions. [2023-08-26 09:00:01,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 345 transitions, 3543 flow [2023-08-26 09:00:01,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 345 transitions, 3389 flow, removed 75 selfloop flow, removed 3 redundant places. [2023-08-26 09:00:01,484 INFO L231 Difference]: Finished difference. Result has 92 places, 125 transitions, 1471 flow [2023-08-26 09:00:01,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1471, PETRI_PLACES=92, PETRI_TRANSITIONS=125} [2023-08-26 09:00:01,485 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 30 predicate places. [2023-08-26 09:00:01,485 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 125 transitions, 1471 flow [2023-08-26 09:00:01,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 243.46153846153845) internal successors, (3165), 13 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states 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 09:00:01,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:00:01,486 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:00:01,497 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 09:00:01,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:00:01,692 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 09:00:01,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:00:01,692 INFO L85 PathProgramCache]: Analyzing trace with hash -423585751, now seen corresponding path program 3 times [2023-08-26 09:00:01,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:00:01,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964693597] [2023-08-26 09:00:01,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:00:01,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:00:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:00:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:00:02,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:00:02,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964693597] [2023-08-26 09:00:02,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964693597] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:00:02,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61302365] [2023-08-26 09:00:02,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:00:02,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:00:02,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:00:02,089 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:00:02,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 09:00:02,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 09:00:02,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:00:02,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-26 09:00:02,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:00:02,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:00:02,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:00:02,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:00:02,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61302365] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:00:02,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:00:02,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-26 09:00:02,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084034068] [2023-08-26 09:00:02,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:00:02,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 09:00:02,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:00:02,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 09:00:02,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-08-26 09:00:02,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 616 [2023-08-26 09:00:02,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 125 transitions, 1471 flow. Second operand has 13 states, 13 states have (on average 243.3846153846154) internal successors, (3164), 13 states have internal predecessors, (3164), 0 states have call successors, (0), 0 states 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 09:00:02,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:00:02,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 616 [2023-08-26 09:00:02,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:00:04,040 INFO L124 PetriNetUnfolderBase]: 4208/7035 cut-off events. [2023-08-26 09:00:04,041 INFO L125 PetriNetUnfolderBase]: For 41234/41234 co-relation queries the response was YES. [2023-08-26 09:00:04,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32443 conditions, 7035 events. 4208/7035 cut-off events. For 41234/41234 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 42218 event pairs, 859 based on Foata normal form. 4/7039 useless extension candidates. Maximal degree in co-relation 32405. Up to 2074 conditions per place. [2023-08-26 09:00:04,109 INFO L140 encePairwiseOnDemand]: 610/616 looper letters, 189 selfloop transitions, 93 changer transitions 17/299 dead transitions. [2023-08-26 09:00:04,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 299 transitions, 3678 flow [2023-08-26 09:00:04,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 09:00:04,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 09:00:04,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2512 transitions. [2023-08-26 09:00:04,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4077922077922078 [2023-08-26 09:00:04,116 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2512 transitions. [2023-08-26 09:00:04,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2512 transitions. [2023-08-26 09:00:04,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:00:04,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2512 transitions. [2023-08-26 09:00:04,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 251.2) internal successors, (2512), 10 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states 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 09:00:04,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 616.0) internal successors, (6776), 11 states have internal predecessors, (6776), 0 states have call successors, (0), 0 states 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 09:00:04,129 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 616.0) internal successors, (6776), 11 states have internal predecessors, (6776), 0 states have call successors, (0), 0 states 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 09:00:04,129 INFO L175 Difference]: Start difference. First operand has 92 places, 125 transitions, 1471 flow. Second operand 10 states and 2512 transitions. [2023-08-26 09:00:04,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 299 transitions, 3678 flow [2023-08-26 09:00:04,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 299 transitions, 3478 flow, removed 94 selfloop flow, removed 3 redundant places. [2023-08-26 09:00:04,208 INFO L231 Difference]: Finished difference. Result has 103 places, 172 transitions, 2258 flow [2023-08-26 09:00:04,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=1347, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2258, PETRI_PLACES=103, PETRI_TRANSITIONS=172} [2023-08-26 09:00:04,209 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 41 predicate places. [2023-08-26 09:00:04,209 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 172 transitions, 2258 flow [2023-08-26 09:00:04,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 243.3846153846154) internal successors, (3164), 13 states have internal predecessors, (3164), 0 states have call successors, (0), 0 states 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 09:00:04,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:00:04,210 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:00:04,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 09:00:04,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:00:04,416 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 09:00:04,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:00:04,416 INFO L85 PathProgramCache]: Analyzing trace with hash 595880261, now seen corresponding path program 1 times [2023-08-26 09:00:04,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:00:04,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251467998] [2023-08-26 09:00:04,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:00:04,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:00:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:00:04,798 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:00:04,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:00:04,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251467998] [2023-08-26 09:00:04,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251467998] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:00:04,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259091951] [2023-08-26 09:00:04,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:00:04,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:00:04,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:00:04,801 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:00:04,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 09:00:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:00:05,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:00:05,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:00:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:00:05,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:00:05,825 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:00:05,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259091951] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:00:05,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:00:05,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 18 [2023-08-26 09:00:05,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976788220] [2023-08-26 09:00:05,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:00:05,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 09:00:05,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:00:05,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 09:00:05,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2023-08-26 09:00:05,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 616 [2023-08-26 09:00:05,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 172 transitions, 2258 flow. Second operand has 20 states, 20 states have (on average 242.7) internal successors, (4854), 20 states have internal predecessors, (4854), 0 states have call successors, (0), 0 states 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 09:00:05,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:00:05,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 616 [2023-08-26 09:00:05,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:00:09,951 INFO L124 PetriNetUnfolderBase]: 5889/9861 cut-off events. [2023-08-26 09:00:09,952 INFO L125 PetriNetUnfolderBase]: For 68335/68335 co-relation queries the response was YES. [2023-08-26 09:00:09,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47166 conditions, 9861 events. 5889/9861 cut-off events. For 68335/68335 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 63571 event pairs, 731 based on Foata normal form. 2/9863 useless extension candidates. Maximal degree in co-relation 47123. Up to 4101 conditions per place. [2023-08-26 09:00:10,026 INFO L140 encePairwiseOnDemand]: 609/616 looper letters, 381 selfloop transitions, 153 changer transitions 6/540 dead transitions. [2023-08-26 09:00:10,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 540 transitions, 6430 flow [2023-08-26 09:00:10,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-26 09:00:10,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-26 09:00:10,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 6760 transitions. [2023-08-26 09:00:10,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40644540644540644 [2023-08-26 09:00:10,043 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 6760 transitions. [2023-08-26 09:00:10,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 6760 transitions. [2023-08-26 09:00:10,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:00:10,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 6760 transitions. [2023-08-26 09:00:10,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 250.37037037037038) internal successors, (6760), 27 states have internal predecessors, (6760), 0 states have call successors, (0), 0 states 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 09:00:10,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 616.0) internal successors, (17248), 28 states have internal predecessors, (17248), 0 states have call successors, (0), 0 states 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 09:00:10,078 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 616.0) internal successors, (17248), 28 states have internal predecessors, (17248), 0 states have call successors, (0), 0 states 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 09:00:10,078 INFO L175 Difference]: Start difference. First operand has 103 places, 172 transitions, 2258 flow. Second operand 27 states and 6760 transitions. [2023-08-26 09:00:10,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 540 transitions, 6430 flow [2023-08-26 09:00:10,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 540 transitions, 6343 flow, removed 36 selfloop flow, removed 4 redundant places. [2023-08-26 09:00:10,399 INFO L231 Difference]: Finished difference. Result has 133 places, 267 transitions, 4055 flow [2023-08-26 09:00:10,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=2215, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=4055, PETRI_PLACES=133, PETRI_TRANSITIONS=267} [2023-08-26 09:00:10,400 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 71 predicate places. [2023-08-26 09:00:10,400 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 267 transitions, 4055 flow [2023-08-26 09:00:10,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 242.7) internal successors, (4854), 20 states have internal predecessors, (4854), 0 states have call successors, (0), 0 states 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 09:00:10,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:00:10,401 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:00:10,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 09:00:10,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-26 09:00:10,607 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 09:00:10,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:00:10,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1752028711, now seen corresponding path program 2 times [2023-08-26 09:00:10,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:00:10,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271026752] [2023-08-26 09:00:10,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:00:10,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:00:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:00:11,035 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:00:11,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:00:11,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271026752] [2023-08-26 09:00:11,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271026752] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:00:11,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793671919] [2023-08-26 09:00:11,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:00:11,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:00:11,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:00:11,037 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:00:11,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 09:00:11,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:00:11,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:00:11,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:00:11,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:00:11,554 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:00:11,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:00:13,723 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 09:00:13,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793671919] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:00:13,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:00:13,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 15 [2023-08-26 09:00:13,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322363887] [2023-08-26 09:00:13,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:00:13,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 09:00:13,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:00:13,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 09:00:13,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-08-26 09:00:13,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 616 [2023-08-26 09:00:13,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 267 transitions, 4055 flow. Second operand has 17 states, 17 states have (on average 243.05882352941177) internal successors, (4132), 17 states have internal predecessors, (4132), 0 states have call successors, (0), 0 states 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 09:00:13,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:00:13,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 616 [2023-08-26 09:00:13,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:00:20,448 INFO L124 PetriNetUnfolderBase]: 8632/14536 cut-off events. [2023-08-26 09:00:20,448 INFO L125 PetriNetUnfolderBase]: For 124386/124386 co-relation queries the response was YES. [2023-08-26 09:00:20,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73228 conditions, 14536 events. 8632/14536 cut-off events. For 124386/124386 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 100001 event pairs, 1883 based on Foata normal form. 6/14542 useless extension candidates. Maximal degree in co-relation 73177. Up to 9080 conditions per place. [2023-08-26 09:00:20,572 INFO L140 encePairwiseOnDemand]: 609/616 looper letters, 534 selfloop transitions, 172 changer transitions 8/714 dead transitions. [2023-08-26 09:00:20,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 714 transitions, 10407 flow [2023-08-26 09:00:20,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-26 09:00:20,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-26 09:00:20,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5321 transitions. [2023-08-26 09:00:20,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41133271490414347 [2023-08-26 09:00:20,583 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5321 transitions. [2023-08-26 09:00:20,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5321 transitions. [2023-08-26 09:00:20,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:00:20,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5321 transitions. [2023-08-26 09:00:20,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 253.38095238095238) internal successors, (5321), 21 states have internal predecessors, (5321), 0 states have call successors, (0), 0 states 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 09:00:20,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 616.0) internal successors, (13552), 22 states have internal predecessors, (13552), 0 states have call successors, (0), 0 states 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 09:00:20,614 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 616.0) internal successors, (13552), 22 states have internal predecessors, (13552), 0 states have call successors, (0), 0 states 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 09:00:20,614 INFO L175 Difference]: Start difference. First operand has 133 places, 267 transitions, 4055 flow. Second operand 21 states and 5321 transitions. [2023-08-26 09:00:20,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 714 transitions, 10407 flow [2023-08-26 09:00:20,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 714 transitions, 9337 flow, removed 519 selfloop flow, removed 5 redundant places. [2023-08-26 09:00:20,993 INFO L231 Difference]: Finished difference. Result has 160 places, 418 transitions, 6654 flow [2023-08-26 09:00:20,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=3533, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=6654, PETRI_PLACES=160, PETRI_TRANSITIONS=418} [2023-08-26 09:00:20,994 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 98 predicate places. [2023-08-26 09:00:20,995 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 418 transitions, 6654 flow [2023-08-26 09:00:20,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 243.05882352941177) internal successors, (4132), 17 states have internal predecessors, (4132), 0 states have call successors, (0), 0 states 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 09:00:20,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:00:20,996 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:00:21,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-26 09:00:21,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:00:21,201 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 09:00:21,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:00:21,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1580164627, now seen corresponding path program 3 times [2023-08-26 09:00:21,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:00:21,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69079330] [2023-08-26 09:00:21,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:00:21,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:00:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:00:21,587 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:00:21,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:00:21,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69079330] [2023-08-26 09:00:21,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69079330] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:00:21,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72985212] [2023-08-26 09:00:21,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:00:21,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:00:21,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:00:21,589 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:00:21,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 09:00:21,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-26 09:00:21,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:00:21,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-26 09:00:21,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:00:22,052 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:00:22,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:00:26,109 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 09:00:26,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72985212] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:00:26,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:00:26,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 15 [2023-08-26 09:00:26,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068091157] [2023-08-26 09:00:26,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:00:26,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 09:00:26,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:00:26,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 09:00:26,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-08-26 09:00:26,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 616 [2023-08-26 09:00:26,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 418 transitions, 6654 flow. Second operand has 17 states, 17 states have (on average 243.05882352941177) internal successors, (4132), 17 states have internal predecessors, (4132), 0 states have call successors, (0), 0 states 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 09:00:26,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:00:26,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 616 [2023-08-26 09:00:26,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:00:32,556 INFO L124 PetriNetUnfolderBase]: 10432/17591 cut-off events. [2023-08-26 09:00:32,557 INFO L125 PetriNetUnfolderBase]: For 151227/151227 co-relation queries the response was YES. [2023-08-26 09:00:32,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87656 conditions, 17591 events. 10432/17591 cut-off events. For 151227/151227 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 125595 event pairs, 1395 based on Foata normal form. 15/17606 useless extension candidates. Maximal degree in co-relation 87594. Up to 7793 conditions per place. [2023-08-26 09:00:32,735 INFO L140 encePairwiseOnDemand]: 609/616 looper letters, 407 selfloop transitions, 317 changer transitions 4/728 dead transitions. [2023-08-26 09:00:32,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 728 transitions, 11552 flow [2023-08-26 09:00:32,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-26 09:00:32,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-26 09:00:32,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5007 transitions. [2023-08-26 09:00:32,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40641233766233764 [2023-08-26 09:00:32,742 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5007 transitions. [2023-08-26 09:00:32,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5007 transitions. [2023-08-26 09:00:32,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:00:32,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5007 transitions. [2023-08-26 09:00:32,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 250.35) internal successors, (5007), 20 states have internal predecessors, (5007), 0 states have call successors, (0), 0 states 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 09:00:32,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 616.0) internal successors, (12936), 21 states have internal predecessors, (12936), 0 states have call successors, (0), 0 states 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 09:00:32,762 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 616.0) internal successors, (12936), 21 states have internal predecessors, (12936), 0 states have call successors, (0), 0 states 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 09:00:32,762 INFO L175 Difference]: Start difference. First operand has 160 places, 418 transitions, 6654 flow. Second operand 20 states and 5007 transitions. [2023-08-26 09:00:32,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 728 transitions, 11552 flow [2023-08-26 09:00:33,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 728 transitions, 11056 flow, removed 237 selfloop flow, removed 5 redundant places. [2023-08-26 09:00:33,464 INFO L231 Difference]: Finished difference. Result has 181 places, 532 transitions, 9613 flow [2023-08-26 09:00:33,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=6282, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=9613, PETRI_PLACES=181, PETRI_TRANSITIONS=532} [2023-08-26 09:00:33,465 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 119 predicate places. [2023-08-26 09:00:33,465 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 532 transitions, 9613 flow [2023-08-26 09:00:33,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 243.05882352941177) internal successors, (4132), 17 states have internal predecessors, (4132), 0 states have call successors, (0), 0 states 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 09:00:33,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:00:33,466 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:00:33,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-26 09:00:33,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:00:33,667 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 09:00:33,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:00:33,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1427661339, now seen corresponding path program 4 times [2023-08-26 09:00:33,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:00:33,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187759688] [2023-08-26 09:00:33,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:00:33,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:00:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:00:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:00:34,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:00:34,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187759688] [2023-08-26 09:00:34,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187759688] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:00:34,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305121568] [2023-08-26 09:00:34,034 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:00:34,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:00:34,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:00:34,037 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:00:34,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 09:00:34,389 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:00:34,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:00:34,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:00:34,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:00:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:00:34,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:00:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 09:00:35,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305121568] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:00:35,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:00:35,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 16 [2023-08-26 09:00:35,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773781474] [2023-08-26 09:00:35,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:00:35,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-26 09:00:35,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:00:35,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-26 09:00:35,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-08-26 09:00:35,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 616 [2023-08-26 09:00:35,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 532 transitions, 9613 flow. Second operand has 18 states, 18 states have (on average 242.88888888888889) internal successors, (4372), 18 states have internal predecessors, (4372), 0 states have call successors, (0), 0 states 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 09:00:35,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:00:35,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 616 [2023-08-26 09:00:35,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:00:38,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-26 09:00:42,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-26 09:00:48,792 INFO L124 PetriNetUnfolderBase]: 12954/21756 cut-off events. [2023-08-26 09:00:48,792 INFO L125 PetriNetUnfolderBase]: For 242703/242703 co-relation queries the response was YES. [2023-08-26 09:00:49,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115454 conditions, 21756 events. 12954/21756 cut-off events. For 242703/242703 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 160883 event pairs, 1597 based on Foata normal form. 5/21761 useless extension candidates. Maximal degree in co-relation 115385. Up to 8830 conditions per place. [2023-08-26 09:00:49,120 INFO L140 encePairwiseOnDemand]: 609/616 looper letters, 502 selfloop transitions, 447 changer transitions 11/960 dead transitions. [2023-08-26 09:00:49,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 960 transitions, 16756 flow [2023-08-26 09:00:49,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-26 09:00:49,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-26 09:00:49,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 6750 transitions. [2023-08-26 09:00:49,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40584415584415584 [2023-08-26 09:00:49,129 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 6750 transitions. [2023-08-26 09:00:49,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 6750 transitions. [2023-08-26 09:00:49,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:00:49,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 6750 transitions. [2023-08-26 09:00:49,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 250.0) internal successors, (6750), 27 states have internal predecessors, (6750), 0 states have call successors, (0), 0 states 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 09:00:49,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 616.0) internal successors, (17248), 28 states have internal predecessors, (17248), 0 states have call successors, (0), 0 states 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 09:00:49,159 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 616.0) internal successors, (17248), 28 states have internal predecessors, (17248), 0 states have call successors, (0), 0 states 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 09:00:49,160 INFO L175 Difference]: Start difference. First operand has 181 places, 532 transitions, 9613 flow. Second operand 27 states and 6750 transitions. [2023-08-26 09:00:49,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 960 transitions, 16756 flow [2023-08-26 09:00:50,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 960 transitions, 16019 flow, removed 355 selfloop flow, removed 7 redundant places. [2023-08-26 09:00:50,337 INFO L231 Difference]: Finished difference. Result has 212 places, 691 transitions, 14014 flow [2023-08-26 09:00:50,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=9174, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=14014, PETRI_PLACES=212, PETRI_TRANSITIONS=691} [2023-08-26 09:00:50,338 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 150 predicate places. [2023-08-26 09:00:50,338 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 691 transitions, 14014 flow [2023-08-26 09:00:50,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 242.88888888888889) internal successors, (4372), 18 states have internal predecessors, (4372), 0 states have call successors, (0), 0 states 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 09:00:50,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:00:50,339 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:00:50,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-26 09:00:50,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-26 09:00:50,545 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 09:00:50,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:00:50,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1299646677, now seen corresponding path program 5 times [2023-08-26 09:00:50,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:00:50,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2804028] [2023-08-26 09:00:50,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:00:50,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:00:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:00:50,925 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:00:50,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:00:50,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2804028] [2023-08-26 09:00:50,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2804028] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:00:50,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140350867] [2023-08-26 09:00:50,926 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:00:50,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:00:50,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:00:50,927 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:00:50,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 09:00:51,096 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-26 09:00:51,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:00:51,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-26 09:00:51,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:00:51,364 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:00:51,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:00:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:00:51,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140350867] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:00:51,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:00:51,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-26 09:00:51,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158861929] [2023-08-26 09:00:51,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:00:51,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-26 09:00:51,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:00:51,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-26 09:00:51,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-08-26 09:00:51,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 616 [2023-08-26 09:00:51,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 691 transitions, 14014 flow. Second operand has 19 states, 19 states have (on average 242.73684210526315) internal successors, (4612), 19 states have internal predecessors, (4612), 0 states have call successors, (0), 0 states 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 09:00:51,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:00:51,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 616 [2023-08-26 09:00:51,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:02,436 INFO L124 PetriNetUnfolderBase]: 19200/32157 cut-off events. [2023-08-26 09:01:02,436 INFO L125 PetriNetUnfolderBase]: For 469738/469738 co-relation queries the response was YES. [2023-08-26 09:01:02,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181392 conditions, 32157 events. 19200/32157 cut-off events. For 469738/469738 co-relation queries the response was YES. Maximal size of possible extension queue 1036. Compared 246798 event pairs, 2691 based on Foata normal form. 29/32186 useless extension candidates. Maximal degree in co-relation 181313. Up to 11296 conditions per place. [2023-08-26 09:01:03,010 INFO L140 encePairwiseOnDemand]: 609/616 looper letters, 713 selfloop transitions, 677 changer transitions 23/1413 dead transitions. [2023-08-26 09:01:03,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 1413 transitions, 27769 flow [2023-08-26 09:01:03,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-26 09:01:03,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-26 09:01:03,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 9245 transitions. [2023-08-26 09:01:03,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40562478062478063 [2023-08-26 09:01:03,020 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 9245 transitions. [2023-08-26 09:01:03,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 9245 transitions. [2023-08-26 09:01:03,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:03,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 9245 transitions. [2023-08-26 09:01:03,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 249.86486486486487) internal successors, (9245), 37 states have internal predecessors, (9245), 0 states have call successors, (0), 0 states 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 09:01:03,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 616.0) internal successors, (23408), 38 states have internal predecessors, (23408), 0 states have call successors, (0), 0 states 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 09:01:03,054 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 616.0) internal successors, (23408), 38 states have internal predecessors, (23408), 0 states have call successors, (0), 0 states 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 09:01:03,055 INFO L175 Difference]: Start difference. First operand has 212 places, 691 transitions, 14014 flow. Second operand 37 states and 9245 transitions. [2023-08-26 09:01:03,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 1413 transitions, 27769 flow [2023-08-26 09:01:05,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 1413 transitions, 25770 flow, removed 973 selfloop flow, removed 3 redundant places. [2023-08-26 09:01:05,720 INFO L231 Difference]: Finished difference. Result has 262 places, 1019 transitions, 22269 flow [2023-08-26 09:01:05,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=13129, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=384, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=22269, PETRI_PLACES=262, PETRI_TRANSITIONS=1019} [2023-08-26 09:01:05,721 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 200 predicate places. [2023-08-26 09:01:05,721 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 1019 transitions, 22269 flow [2023-08-26 09:01:05,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 242.73684210526315) internal successors, (4612), 19 states have internal predecessors, (4612), 0 states have call successors, (0), 0 states 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 09:01:05,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:05,722 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:05,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-26 09:01:05,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-26 09:01:05,931 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 09:01:05,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:05,932 INFO L85 PathProgramCache]: Analyzing trace with hash 865209945, now seen corresponding path program 6 times [2023-08-26 09:01:05,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:05,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028763771] [2023-08-26 09:01:05,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:05,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:05,994 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 09:01:05,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:05,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028763771] [2023-08-26 09:01:05,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028763771] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:01:05,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084431339] [2023-08-26 09:01:05,994 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:01:05,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:05,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:01:05,996 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:01:06,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-26 09:01:06,168 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 09:01:06,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:01:06,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 09:01:06,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:01:06,201 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 09:01:06,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:01:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 09:01:06,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084431339] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:01:06,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:01:06,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2023-08-26 09:01:06,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879203769] [2023-08-26 09:01:06,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:01:06,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 09:01:06,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:06,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 09:01:06,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-26 09:01:06,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 616 [2023-08-26 09:01:06,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 1019 transitions, 22269 flow. Second operand has 6 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states 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 09:01:06,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:06,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 616 [2023-08-26 09:01:06,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:21,841 INFO L124 PetriNetUnfolderBase]: 31401/52784 cut-off events. [2023-08-26 09:01:21,842 INFO L125 PetriNetUnfolderBase]: For 859333/859333 co-relation queries the response was YES. [2023-08-26 09:01:22,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303466 conditions, 52784 events. 31401/52784 cut-off events. For 859333/859333 co-relation queries the response was YES. Maximal size of possible extension queue 1659. Compared 437841 event pairs, 5251 based on Foata normal form. 112/52896 useless extension candidates. Maximal degree in co-relation 303370. Up to 20197 conditions per place. [2023-08-26 09:01:23,100 INFO L140 encePairwiseOnDemand]: 609/616 looper letters, 1906 selfloop transitions, 487 changer transitions 5/2398 dead transitions. [2023-08-26 09:01:23,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 2398 transitions, 53892 flow [2023-08-26 09:01:23,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 09:01:23,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 09:01:23,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2092 transitions. [2023-08-26 09:01:23,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424512987012987 [2023-08-26 09:01:23,103 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2092 transitions. [2023-08-26 09:01:23,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2092 transitions. [2023-08-26 09:01:23,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:23,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2092 transitions. [2023-08-26 09:01:23,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 261.5) internal successors, (2092), 8 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states 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 09:01:23,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 616.0) internal successors, (5544), 9 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states 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 09:01:23,110 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 616.0) internal successors, (5544), 9 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states 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 09:01:23,110 INFO L175 Difference]: Start difference. First operand has 262 places, 1019 transitions, 22269 flow. Second operand 8 states and 2092 transitions. [2023-08-26 09:01:23,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 2398 transitions, 53892 flow [2023-08-26 09:01:30,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 2398 transitions, 49669 flow, removed 2073 selfloop flow, removed 6 redundant places. [2023-08-26 09:01:30,551 INFO L231 Difference]: Finished difference. Result has 268 places, 1382 transitions, 31829 flow [2023-08-26 09:01:30,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=20775, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1019, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=31829, PETRI_PLACES=268, PETRI_TRANSITIONS=1382} [2023-08-26 09:01:30,552 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 206 predicate places. [2023-08-26 09:01:30,552 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 1382 transitions, 31829 flow [2023-08-26 09:01:30,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states 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 09:01:30,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:30,553 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:30,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-26 09:01:30,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-26 09:01:30,753 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 09:01:30,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:30,754 INFO L85 PathProgramCache]: Analyzing trace with hash -234279621, now seen corresponding path program 7 times [2023-08-26 09:01:30,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:30,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724625433] [2023-08-26 09:01:30,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:30,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:30,827 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 09:01:30,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:30,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724625433] [2023-08-26 09:01:30,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724625433] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:01:30,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413774251] [2023-08-26 09:01:30,828 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:01:30,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:30,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:01:30,829 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:01:30,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-26 09:01:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:30,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 09:01:30,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:01:30,975 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 09:01:30,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:01:31,016 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 09:01:31,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413774251] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:01:31,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:01:31,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-08-26 09:01:31,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231664101] [2023-08-26 09:01:31,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:01:31,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 09:01:31,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:31,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 09:01:31,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 09:01:31,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 616 [2023-08-26 09:01:31,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 1382 transitions, 31829 flow. Second operand has 5 states, 5 states have (on average 254.2) internal successors, (1271), 5 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states 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 09:01:31,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:31,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 616 [2023-08-26 09:01:31,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:50,362 INFO L124 PetriNetUnfolderBase]: 32218/55308 cut-off events. [2023-08-26 09:01:50,362 INFO L125 PetriNetUnfolderBase]: For 911586/911586 co-relation queries the response was YES. [2023-08-26 09:01:51,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326637 conditions, 55308 events. 32218/55308 cut-off events. For 911586/911586 co-relation queries the response was YES. Maximal size of possible extension queue 1813. Compared 475170 event pairs, 4595 based on Foata normal form. 172/55480 useless extension candidates. Maximal degree in co-relation 326536. Up to 13724 conditions per place. [2023-08-26 09:01:51,671 INFO L140 encePairwiseOnDemand]: 609/616 looper letters, 1415 selfloop transitions, 787 changer transitions 0/2202 dead transitions. [2023-08-26 09:01:51,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 2202 transitions, 52113 flow [2023-08-26 09:01:51,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:01:51,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:01:51,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1827 transitions. [2023-08-26 09:01:51,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4237012987012987 [2023-08-26 09:01:51,674 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1827 transitions. [2023-08-26 09:01:51,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1827 transitions. [2023-08-26 09:01:51,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:51,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1827 transitions. [2023-08-26 09:01:51,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 261.0) internal successors, (1827), 7 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states 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 09:01:51,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 616.0) internal successors, (4928), 8 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states 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 09:01:51,680 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 616.0) internal successors, (4928), 8 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states 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 09:01:51,680 INFO L175 Difference]: Start difference. First operand has 268 places, 1382 transitions, 31829 flow. Second operand 7 states and 1827 transitions. [2023-08-26 09:01:51,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 2202 transitions, 52113 flow [2023-08-26 09:02:01,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 2202 transitions, 51657 flow, removed 228 selfloop flow, removed 0 redundant places. [2023-08-26 09:02:01,977 INFO L231 Difference]: Finished difference. Result has 276 places, 1590 transitions, 38975 flow [2023-08-26 09:02:01,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=31286, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=597, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=771, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38975, PETRI_PLACES=276, PETRI_TRANSITIONS=1590} [2023-08-26 09:02:01,979 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 214 predicate places. [2023-08-26 09:02:01,979 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 1590 transitions, 38975 flow [2023-08-26 09:02:01,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 254.2) internal successors, (1271), 5 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states 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 09:02:01,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:01,980 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:01,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-26 09:02:02,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:02,186 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 09:02:02,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:02,186 INFO L85 PathProgramCache]: Analyzing trace with hash -772508161, now seen corresponding path program 8 times [2023-08-26 09:02:02,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:02,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883435919] [2023-08-26 09:02:02,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:02,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:02,244 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 09:02:02,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:02,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883435919] [2023-08-26 09:02:02,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883435919] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:02,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750747345] [2023-08-26 09:02:02,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:02:02,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:02,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:02,246 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:02:02,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-26 09:02:02,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:02:02,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:02:02,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 09:02:02,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:02,418 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 09:02:02,419 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:02,459 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 09:02:02,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750747345] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:02,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:02,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2023-08-26 09:02:02,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129388043] [2023-08-26 09:02:02,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:02,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 09:02:02,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:02,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 09:02:02,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-26 09:02:02,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 616 [2023-08-26 09:02:02,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 1590 transitions, 38975 flow. Second operand has 6 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states 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 09:02:02,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:02,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 616 [2023-08-26 09:02:02,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:27,299 INFO L124 PetriNetUnfolderBase]: 35106/60382 cut-off events. [2023-08-26 09:02:27,299 INFO L125 PetriNetUnfolderBase]: For 1134942/1134942 co-relation queries the response was YES. [2023-08-26 09:02:28,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371574 conditions, 60382 events. 35106/60382 cut-off events. For 1134942/1134942 co-relation queries the response was YES. Maximal size of possible extension queue 2114. Compared 527990 event pairs, 6428 based on Foata normal form. 778/61160 useless extension candidates. Maximal degree in co-relation 371470. Up to 16733 conditions per place. [2023-08-26 09:02:28,809 INFO L140 encePairwiseOnDemand]: 609/616 looper letters, 1759 selfloop transitions, 722 changer transitions 0/2481 dead transitions. [2023-08-26 09:02:28,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 2481 transitions, 60442 flow [2023-08-26 09:02:28,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:02:28,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:02:28,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1829 transitions. [2023-08-26 09:02:28,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42416512059369205 [2023-08-26 09:02:28,811 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1829 transitions. [2023-08-26 09:02:28,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1829 transitions. [2023-08-26 09:02:28,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:28,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1829 transitions. [2023-08-26 09:02:28,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 261.2857142857143) internal successors, (1829), 7 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states 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 09:02:28,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 616.0) internal successors, (4928), 8 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states 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 09:02:28,816 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 616.0) internal successors, (4928), 8 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states 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 09:02:28,817 INFO L175 Difference]: Start difference. First operand has 276 places, 1590 transitions, 38975 flow. Second operand 7 states and 1829 transitions. [2023-08-26 09:02:28,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 2481 transitions, 60442 flow [2023-08-26 09:02:41,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 2481 transitions, 60331 flow, removed 52 selfloop flow, removed 1 redundant places. [2023-08-26 09:02:41,863 INFO L231 Difference]: Finished difference. Result has 286 places, 1716 transitions, 45317 flow [2023-08-26 09:02:41,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=37381, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=559, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=867, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=45317, PETRI_PLACES=286, PETRI_TRANSITIONS=1716} [2023-08-26 09:02:41,865 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 224 predicate places. [2023-08-26 09:02:41,865 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 1716 transitions, 45317 flow [2023-08-26 09:02:41,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states 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 09:02:41,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:41,865 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:41,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-26 09:02:42,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:42,071 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 09:02:42,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:42,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1368047871, now seen corresponding path program 9 times [2023-08-26 09:02:42,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:42,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638269304] [2023-08-26 09:02:42,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:42,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:42,118 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-26 09:02:42,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:42,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638269304] [2023-08-26 09:02:42,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638269304] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:42,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792619422] [2023-08-26 09:02:42,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:02:42,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:42,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:42,120 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:02:42,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-26 09:02:42,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 09:02:42,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:02:42,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 09:02:42,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:42,270 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-26 09:02:42,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:42,296 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-26 09:02:42,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792619422] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:42,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:42,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-08-26 09:02:42,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036354174] [2023-08-26 09:02:42,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:42,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 09:02:42,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:42,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 09:02:42,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 09:02:42,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 616 [2023-08-26 09:02:42,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 1716 transitions, 45317 flow. Second operand has 5 states, 5 states have (on average 254.0) internal successors, (1270), 5 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states 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 09:02:42,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:42,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 616 [2023-08-26 09:02:42,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:03:07,759 INFO L124 PetriNetUnfolderBase]: 34474/59177 cut-off events. [2023-08-26 09:03:07,759 INFO L125 PetriNetUnfolderBase]: For 1312328/1312328 co-relation queries the response was YES. [2023-08-26 09:03:08,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391584 conditions, 59177 events. 34474/59177 cut-off events. For 1312328/1312328 co-relation queries the response was YES. Maximal size of possible extension queue 2126. Compared 515205 event pairs, 7267 based on Foata normal form. 284/59461 useless extension candidates. Maximal degree in co-relation 391476. Up to 25095 conditions per place. [2023-08-26 09:03:09,308 INFO L140 encePairwiseOnDemand]: 609/616 looper letters, 2026 selfloop transitions, 540 changer transitions 0/2566 dead transitions. [2023-08-26 09:03:09,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 2566 transitions, 62304 flow [2023-08-26 09:03:09,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:03:09,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:03:09,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1823 transitions. [2023-08-26 09:03:09,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42277365491651203 [2023-08-26 09:03:09,310 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1823 transitions. [2023-08-26 09:03:09,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1823 transitions. [2023-08-26 09:03:09,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:03:09,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1823 transitions. [2023-08-26 09:03:09,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 260.42857142857144) internal successors, (1823), 7 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states 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 09:03:09,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 616.0) internal successors, (4928), 8 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states 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 09:03:09,315 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 616.0) internal successors, (4928), 8 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states 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 09:03:09,315 INFO L175 Difference]: Start difference. First operand has 286 places, 1716 transitions, 45317 flow. Second operand 7 states and 1823 transitions. [2023-08-26 09:03:09,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 2566 transitions, 62304 flow [2023-08-26 09:03:23,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 2566 transitions, 62025 flow, removed 53 selfloop flow, removed 1 redundant places. [2023-08-26 09:03:23,075 INFO L231 Difference]: Finished difference. Result has 295 places, 1684 transitions, 45475 flow [2023-08-26 09:03:23,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=43166, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=522, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=45475, PETRI_PLACES=295, PETRI_TRANSITIONS=1684} [2023-08-26 09:03:23,076 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 233 predicate places. [2023-08-26 09:03:23,077 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 1684 transitions, 45475 flow [2023-08-26 09:03:23,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 254.0) internal successors, (1270), 5 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states 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 09:03:23,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:03:23,077 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:03:23,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-26 09:03:23,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-26 09:03:23,284 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 09:03:23,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:03:23,284 INFO L85 PathProgramCache]: Analyzing trace with hash -112554371, now seen corresponding path program 10 times [2023-08-26 09:03:23,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:03:23,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611547275] [2023-08-26 09:03:23,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:03:23,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:03:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:03:23,727 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:23,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:03:23,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611547275] [2023-08-26 09:03:23,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611547275] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:03:23,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729058697] [2023-08-26 09:03:23,728 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:03:23,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:03:23,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:03:23,729 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:03:23,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-26 09:03:23,986 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:03:23,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:03:23,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-26 09:03:23,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:03:24,334 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:24,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:03:28,679 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 09:03:28,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729058697] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:03:28,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:03:28,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 22 [2023-08-26 09:03:28,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137381723] [2023-08-26 09:03:28,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:03:28,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 09:03:28,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:03:28,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 09:03:28,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=448, Unknown=1, NotChecked=0, Total=552 [2023-08-26 09:03:28,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 616 [2023-08-26 09:03:28,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 1684 transitions, 45475 flow. Second operand has 24 states, 24 states have (on average 242.33333333333334) internal successors, (5816), 24 states have internal predecessors, (5816), 0 states have call successors, (0), 0 states 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 09:03:28,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:03:28,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 616 [2023-08-26 09:03:28,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:03:32,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-26 09:03:33,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-26 09:03:44,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-26 09:03:48,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-26 09:03:50,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-26 09:04:03,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-26 09:04:28,496 INFO L124 PetriNetUnfolderBase]: 39959/68380 cut-off events. [2023-08-26 09:04:28,496 INFO L125 PetriNetUnfolderBase]: For 1647976/1647976 co-relation queries the response was YES. [2023-08-26 09:04:29,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467629 conditions, 68380 events. 39959/68380 cut-off events. For 1647976/1647976 co-relation queries the response was YES. Maximal size of possible extension queue 2423. Compared 601956 event pairs, 6675 based on Foata normal form. 16/68396 useless extension candidates. Maximal degree in co-relation 467518. Up to 33020 conditions per place. [2023-08-26 09:04:30,219 INFO L140 encePairwiseOnDemand]: 609/616 looper letters, 1172 selfloop transitions, 1235 changer transitions 34/2441 dead transitions. [2023-08-26 09:04:30,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 2441 transitions, 64400 flow [2023-08-26 09:04:30,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-26 09:04:30,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-26 09:04:30,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 9498 transitions. [2023-08-26 09:04:30,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40575871496924126 [2023-08-26 09:04:30,227 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 9498 transitions. [2023-08-26 09:04:30,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 9498 transitions. [2023-08-26 09:04:30,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:04:30,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 9498 transitions. [2023-08-26 09:04:30,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 249.94736842105263) internal successors, (9498), 38 states have internal predecessors, (9498), 0 states have call successors, (0), 0 states 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 09:04:30,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 616.0) internal successors, (24024), 39 states have internal predecessors, (24024), 0 states have call successors, (0), 0 states 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 09:04:30,256 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 616.0) internal successors, (24024), 39 states have internal predecessors, (24024), 0 states have call successors, (0), 0 states 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 09:04:30,256 INFO L175 Difference]: Start difference. First operand has 295 places, 1684 transitions, 45475 flow. Second operand 38 states and 9498 transitions. [2023-08-26 09:04:30,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 2441 transitions, 64400 flow [2023-08-26 09:04:49,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 2441 transitions, 63971 flow, removed 45 selfloop flow, removed 1 redundant places. [2023-08-26 09:04:49,574 INFO L231 Difference]: Finished difference. Result has 343 places, 2009 transitions, 58525 flow [2023-08-26 09:04:49,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=45194, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=928, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=677, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=58525, PETRI_PLACES=343, PETRI_TRANSITIONS=2009} [2023-08-26 09:04:49,576 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 281 predicate places. [2023-08-26 09:04:49,576 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 2009 transitions, 58525 flow [2023-08-26 09:04:49,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 242.33333333333334) internal successors, (5816), 24 states have internal predecessors, (5816), 0 states have call successors, (0), 0 states 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 09:04:49,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:04:49,577 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:04:49,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-26 09:04:49,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:04:49,783 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 09:04:49,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:04:49,784 INFO L85 PathProgramCache]: Analyzing trace with hash 976237281, now seen corresponding path program 11 times [2023-08-26 09:04:49,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:04:49,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767765884] [2023-08-26 09:04:49,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:04:49,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:04:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:04:49,832 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 09:04:49,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:04:49,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767765884] [2023-08-26 09:04:49,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767765884] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:04:49,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537949808] [2023-08-26 09:04:49,832 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:04:49,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:04:49,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:04:49,834 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:04:49,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-26 09:04:49,957 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-26 09:04:49,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:04:49,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 09:04:49,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:04:49,983 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 09:04:49,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:04:50,019 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 09:04:50,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537949808] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:04:50,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:04:50,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2023-08-26 09:04:50,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837913620] [2023-08-26 09:04:50,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:04:50,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 09:04:50,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:04:50,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 09:04:50,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-26 09:04:50,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 616 [2023-08-26 09:04:50,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 2009 transitions, 58525 flow. Second operand has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states 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 09:04:50,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:04:50,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 616 [2023-08-26 09:04:50,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:05:28,709 INFO L124 PetriNetUnfolderBase]: 43952/75331 cut-off events. [2023-08-26 09:05:28,710 INFO L125 PetriNetUnfolderBase]: For 2056102/2056102 co-relation queries the response was YES. [2023-08-26 09:05:30,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528412 conditions, 75331 events. 43952/75331 cut-off events. For 2056102/2056102 co-relation queries the response was YES. Maximal size of possible extension queue 2572. Compared 673156 event pairs, 8222 based on Foata normal form. 892/76223 useless extension candidates. Maximal degree in co-relation 528289. Up to 39314 conditions per place. [2023-08-26 09:05:30,901 INFO L140 encePairwiseOnDemand]: 609/616 looper letters, 1750 selfloop transitions, 1099 changer transitions 0/2849 dead transitions. [2023-08-26 09:05:30,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 2849 transitions, 83050 flow [2023-08-26 09:05:30,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:05:30,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:05:30,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1836 transitions. [2023-08-26 09:05:30,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42578849721706863 [2023-08-26 09:05:30,903 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1836 transitions. [2023-08-26 09:05:30,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1836 transitions. [2023-08-26 09:05:30,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:05:30,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1836 transitions. [2023-08-26 09:05:30,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 262.2857142857143) internal successors, (1836), 7 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states 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 09:05:30,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 616.0) internal successors, (4928), 8 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states 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 09:05:30,908 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 616.0) internal successors, (4928), 8 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states 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 09:05:30,908 INFO L175 Difference]: Start difference. First operand has 343 places, 2009 transitions, 58525 flow. Second operand 7 states and 1836 transitions. [2023-08-26 09:05:30,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 2849 transitions, 83050 flow [2023-08-26 09:05:53,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 2849 transitions, 80868 flow, removed 1033 selfloop flow, removed 12 redundant places. [2023-08-26 09:05:53,562 INFO L231 Difference]: Finished difference. Result has 343 places, 2207 transitions, 67374 flow [2023-08-26 09:05:53,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=56600, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1994, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=886, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1063, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=67374, PETRI_PLACES=343, PETRI_TRANSITIONS=2207} [2023-08-26 09:05:53,563 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 281 predicate places. [2023-08-26 09:05:53,563 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 2207 transitions, 67374 flow [2023-08-26 09:05:53,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states 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 09:05:53,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:05:53,564 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:05:53,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-26 09:05:53,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:05:53,765 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 09:05:53,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:05:53,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1533996335, now seen corresponding path program 12 times [2023-08-26 09:05:53,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:05:53,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339223448] [2023-08-26 09:05:53,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:05:53,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:05:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:05:53,811 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 09:05:53,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:05:53,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339223448] [2023-08-26 09:05:53,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339223448] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:05:53,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749502058] [2023-08-26 09:05:53,812 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:05:53,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:05:53,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:05:53,813 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:05:53,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-26 09:05:53,961 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-26 09:05:53,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:05:53,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 09:05:53,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:05:53,987 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 09:05:53,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:05:54,023 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 09:05:54,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749502058] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:05:54,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:05:54,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-08-26 09:05:54,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076496564] [2023-08-26 09:05:54,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:05:54,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 09:05:54,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:05:54,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 09:05:54,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 09:05:54,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 616 [2023-08-26 09:05:54,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 2207 transitions, 67374 flow. Second operand has 5 states, 5 states have (on average 254.6) internal successors, (1273), 5 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states 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 09:05:54,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:05:54,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 616 [2023-08-26 09:05:54,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:06:36,761 INFO L124 PetriNetUnfolderBase]: 44309/76231 cut-off events. [2023-08-26 09:06:36,762 INFO L125 PetriNetUnfolderBase]: For 2228161/2228161 co-relation queries the response was YES. [2023-08-26 09:06:38,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 557150 conditions, 76231 events. 44309/76231 cut-off events. For 2228161/2228161 co-relation queries the response was YES. Maximal size of possible extension queue 2597. Compared 685162 event pairs, 10729 based on Foata normal form. 24/76255 useless extension candidates. Maximal degree in co-relation 557024. Up to 49053 conditions per place. [2023-08-26 09:06:38,874 INFO L140 encePairwiseOnDemand]: 609/616 looper letters, 1885 selfloop transitions, 464 changer transitions 0/2349 dead transitions. [2023-08-26 09:06:38,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 2349 transitions, 74413 flow [2023-08-26 09:06:38,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:06:38,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:06:38,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1819 transitions. [2023-08-26 09:06:38,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42184601113172543 [2023-08-26 09:06:38,876 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1819 transitions. [2023-08-26 09:06:38,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1819 transitions. [2023-08-26 09:06:38,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:06:38,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1819 transitions. [2023-08-26 09:06:38,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 259.85714285714283) internal successors, (1819), 7 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states 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 09:06:38,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 616.0) internal successors, (4928), 8 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states 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 09:06:38,881 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 616.0) internal successors, (4928), 8 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states 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 09:06:38,881 INFO L175 Difference]: Start difference. First operand has 343 places, 2207 transitions, 67374 flow. Second operand 7 states and 1819 transitions. [2023-08-26 09:06:38,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 2349 transitions, 74413 flow [2023-08-26 09:07:07,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 2349 transitions, 74105 flow, removed 151 selfloop flow, removed 1 redundant places. [2023-08-26 09:07:07,183 INFO L231 Difference]: Finished difference. Result has 351 places, 2225 transitions, 69077 flow [2023-08-26 09:07:07,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=66288, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=434, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1739, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=69077, PETRI_PLACES=351, PETRI_TRANSITIONS=2225} [2023-08-26 09:07:07,185 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 289 predicate places. [2023-08-26 09:07:07,185 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 2225 transitions, 69077 flow [2023-08-26 09:07:07,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 254.6) internal successors, (1273), 5 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states 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 09:07:07,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:07,186 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:07,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-26 09:07:07,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-26 09:07:07,387 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 09:07:07,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:07,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1271304957, now seen corresponding path program 13 times [2023-08-26 09:07:07,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:07,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121521462] [2023-08-26 09:07:07,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:07,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 09:07:07,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:07,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121521462] [2023-08-26 09:07:07,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121521462] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:07:07,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636426659] [2023-08-26 09:07:07,439 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:07:07,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:07:07,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:07:07,440 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:07:07,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-26 09:07:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:07,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 09:07:07,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:07:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 09:07:07,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:07:07,617 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 09:07:07,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636426659] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:07:07,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:07:07,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2023-08-26 09:07:07,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453659400] [2023-08-26 09:07:07,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:07:07,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 09:07:07,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:07,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 09:07:07,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-26 09:07:07,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 616 [2023-08-26 09:07:07,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 2225 transitions, 69077 flow. Second operand has 6 states, 6 states have (on average 253.83333333333334) internal successors, (1523), 6 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states 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 09:07:07,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:07,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 616 [2023-08-26 09:07:07,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:08:08,819 INFO L124 PetriNetUnfolderBase]: 57766/98931 cut-off events. [2023-08-26 09:08:08,819 INFO L125 PetriNetUnfolderBase]: For 3143330/3143330 co-relation queries the response was YES. [2023-08-26 09:08:11,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735134 conditions, 98931 events. 57766/98931 cut-off events. For 3143330/3143330 co-relation queries the response was YES. Maximal size of possible extension queue 2927. Compared 904269 event pairs, 16759 based on Foata normal form. 646/99577 useless extension candidates. Maximal degree in co-relation 735004. Up to 25835 conditions per place. [2023-08-26 09:08:11,672 INFO L140 encePairwiseOnDemand]: 609/616 looper letters, 1853 selfloop transitions, 1156 changer transitions 125/3134 dead transitions. [2023-08-26 09:08:11,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 3134 transitions, 93718 flow [2023-08-26 09:08:11,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 09:08:11,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 09:08:11,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2082 transitions. [2023-08-26 09:08:11,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4224837662337662 [2023-08-26 09:08:11,674 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2082 transitions. [2023-08-26 09:08:11,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2082 transitions. [2023-08-26 09:08:11,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:08:11,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2082 transitions. [2023-08-26 09:08:11,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 260.25) internal successors, (2082), 8 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states 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 09:08:11,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 616.0) internal successors, (5544), 9 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states 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 09:08:11,679 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 616.0) internal successors, (5544), 9 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states 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 09:08:11,679 INFO L175 Difference]: Start difference. First operand has 351 places, 2225 transitions, 69077 flow. Second operand 8 states and 2082 transitions. [2023-08-26 09:08:11,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 3134 transitions, 93718 flow [2023-08-26 09:08:52,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 3134 transitions, 92445 flow, removed 202 selfloop flow, removed 1 redundant places. [2023-08-26 09:08:52,322 INFO L231 Difference]: Finished difference. Result has 362 places, 2380 transitions, 76884 flow [2023-08-26 09:08:52,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=61154, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2049, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=900, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=999, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=76884, PETRI_PLACES=362, PETRI_TRANSITIONS=2380} [2023-08-26 09:08:52,324 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 300 predicate places. [2023-08-26 09:08:52,324 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 2380 transitions, 76884 flow [2023-08-26 09:08:52,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 253.83333333333334) internal successors, (1523), 6 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states 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 09:08:52,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:08:52,324 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:08:52,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-26 09:08:52,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:08:52,530 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2023-08-26 09:08:52,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:08:52,530 INFO L85 PathProgramCache]: Analyzing trace with hash 97011755, now seen corresponding path program 14 times [2023-08-26 09:08:52,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:08:52,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587568689] [2023-08-26 09:08:52,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:08:52,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:08:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:08:52,581 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-26 09:08:52,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:08:52,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587568689] [2023-08-26 09:08:52,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587568689] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:08:52,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098993820] [2023-08-26 09:08:52,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:08:52,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:08:52,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:08:52,583 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:08:52,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-26 09:08:52,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:08:52,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:08:52,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 09:08:52,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:08:52,767 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-26 09:08:52,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:08:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-26 09:08:52,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098993820] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:08:52,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:08:52,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-08-26 09:08:52,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586918989] [2023-08-26 09:08:52,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:08:52,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 09:08:52,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:08:52,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 09:08:52,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 09:08:52,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 616 [2023-08-26 09:08:52,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 2380 transitions, 76884 flow. Second operand has 5 states, 5 states have (on average 254.4) internal successors, (1272), 5 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states 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 09:08:52,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:08:52,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 616 [2023-08-26 09:08:52,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:09:54,524 INFO L124 PetriNetUnfolderBase]: 56665/97367 cut-off events. [2023-08-26 09:09:54,524 INFO L125 PetriNetUnfolderBase]: For 3498243/3498243 co-relation queries the response was YES. [2023-08-26 09:09:57,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745818 conditions, 97367 events. 56665/97367 cut-off events. For 3498243/3498243 co-relation queries the response was YES. Maximal size of possible extension queue 2800. Compared 894503 event pairs, 11246 based on Foata normal form. 1492/98859 useless extension candidates. Maximal degree in co-relation 745683. Up to 30520 conditions per place. [2023-08-26 09:09:57,689 INFO L140 encePairwiseOnDemand]: 609/616 looper letters, 1724 selfloop transitions, 1600 changer transitions 0/3324 dead transitions. [2023-08-26 09:09:57,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 3324 transitions, 105848 flow [2023-08-26 09:09:57,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:09:57,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:09:57,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1829 transitions. [2023-08-26 09:09:57,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42416512059369205 [2023-08-26 09:09:57,691 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1829 transitions. [2023-08-26 09:09:57,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1829 transitions. [2023-08-26 09:09:57,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:09:57,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1829 transitions. [2023-08-26 09:09:57,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 261.2857142857143) internal successors, (1829), 7 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states 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 09:09:57,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 616.0) internal successors, (4928), 8 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states 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 09:09:57,696 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 616.0) internal successors, (4928), 8 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states 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 09:09:57,697 INFO L175 Difference]: Start difference. First operand has 362 places, 2380 transitions, 76884 flow. Second operand 7 states and 1829 transitions. [2023-08-26 09:09:57,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 3324 transitions, 105848 flow