/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/test-easy1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 10:58:52,617 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 10:58:52,696 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 10:58:52,703 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 10:58:52,704 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 10:58:52,742 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 10:58:52,743 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 10:58:52,743 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 10:58:52,744 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 10:58:52,747 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 10:58:52,747 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 10:58:52,748 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 10:58:52,748 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 10:58:52,749 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 10:58:52,749 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 10:58:52,750 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 10:58:52,750 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 10:58:52,750 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 10:58:52,750 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 10:58:52,750 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 10:58:52,751 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 10:58:52,751 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 10:58:52,752 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 10:58:52,752 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 10:58:52,752 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 10:58:52,753 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 10:58:52,753 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 10:58:52,753 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 10:58:52,753 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 10:58:52,753 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 10:58:52,754 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 10:58:52,754 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 10:58:52,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 10:58:52,755 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 10:58:52,755 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 10:58:52,755 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 10:58:53,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 10:58:53,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 10:58:53,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 10:58:53,107 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 10:58:53,107 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 10:58:53,109 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c [2023-08-26 10:58:54,348 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 10:58:54,564 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 10:58:54,564 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c [2023-08-26 10:58:54,571 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac7bd991e/90901eeb37874f38bd5ca17409140860/FLAGc4e06c41f [2023-08-26 10:58:54,582 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac7bd991e/90901eeb37874f38bd5ca17409140860 [2023-08-26 10:58:54,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 10:58:54,586 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 10:58:54,587 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 10:58:54,587 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 10:58:54,589 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 10:58:54,590 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:58:54" (1/1) ... [2023-08-26 10:58:54,591 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8b4a382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:58:54, skipping insertion in model container [2023-08-26 10:58:54,591 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:58:54" (1/1) ... [2023-08-26 10:58:54,608 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 10:58:54,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 10:58:54,752 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 10:58:54,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 10:58:54,790 INFO L206 MainTranslator]: Completed translation [2023-08-26 10:58:54,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:58:54 WrapperNode [2023-08-26 10:58:54,791 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 10:58:54,792 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 10:58:54,792 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 10:58:54,792 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 10:58:54,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:58:54" (1/1) ... [2023-08-26 10:58:54,805 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:58:54" (1/1) ... [2023-08-26 10:58:54,823 INFO L138 Inliner]: procedures = 21, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 92 [2023-08-26 10:58:54,823 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 10:58:54,824 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 10:58:54,824 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 10:58:54,824 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 10:58:54,831 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:58:54" (1/1) ... [2023-08-26 10:58:54,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:58:54" (1/1) ... [2023-08-26 10:58:54,833 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:58:54" (1/1) ... [2023-08-26 10:58:54,834 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:58:54" (1/1) ... [2023-08-26 10:58:54,839 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:58:54" (1/1) ... [2023-08-26 10:58:54,842 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:58:54" (1/1) ... [2023-08-26 10:58:54,843 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:58:54" (1/1) ... [2023-08-26 10:58:54,844 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:58:54" (1/1) ... [2023-08-26 10:58:54,846 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 10:58:54,847 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 10:58:54,847 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 10:58:54,847 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 10:58:54,848 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:58:54" (1/1) ... [2023-08-26 10:58:54,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 10:58:54,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:58:54,880 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 10:58:54,886 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 10:58:54,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 10:58:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 10:58:54,910 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 10:58:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 10:58:54,910 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 10:58:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 10:58:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 10:58:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 10:58:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 10:58:54,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 10:58:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 10:58:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 10:58:54,912 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 10:58:54,987 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 10:58:54,990 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 10:58:55,292 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 10:58:55,299 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 10:58:55,300 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-26 10:58:55,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:58:55 BoogieIcfgContainer [2023-08-26 10:58:55,302 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 10:58:55,304 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 10:58:55,304 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 10:58:55,307 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 10:58:55,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:58:54" (1/3) ... [2023-08-26 10:58:55,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a5f5faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:58:55, skipping insertion in model container [2023-08-26 10:58:55,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:58:54" (2/3) ... [2023-08-26 10:58:55,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a5f5faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:58:55, skipping insertion in model container [2023-08-26 10:58:55,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:58:55" (3/3) ... [2023-08-26 10:58:55,312 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2023-08-26 10:58:55,329 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 10:58:55,329 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-26 10:58:55,330 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 10:58:55,425 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 10:58:55,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 144 transitions, 304 flow [2023-08-26 10:58:55,533 INFO L124 PetriNetUnfolderBase]: 7/142 cut-off events. [2023-08-26 10:58:55,533 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 10:58:55,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 142 events. 7/142 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 134 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2023-08-26 10:58:55,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 144 transitions, 304 flow [2023-08-26 10:58:55,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 133 transitions, 278 flow [2023-08-26 10:58:55,552 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 10:58:55,561 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 133 transitions, 278 flow [2023-08-26 10:58:55,563 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 133 transitions, 278 flow [2023-08-26 10:58:55,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 133 transitions, 278 flow [2023-08-26 10:58:55,606 INFO L124 PetriNetUnfolderBase]: 7/133 cut-off events. [2023-08-26 10:58:55,606 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 10:58:55,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 133 events. 7/133 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 133 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2023-08-26 10:58:55,609 INFO L119 LiptonReduction]: Number of co-enabled transitions 1976 [2023-08-26 10:58:59,061 INFO L134 LiptonReduction]: Checked pairs total: 2069 [2023-08-26 10:58:59,062 INFO L136 LiptonReduction]: Total number of compositions: 169 [2023-08-26 10:58:59,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 10:58:59,079 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;@731fcd76, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 10:58:59,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-26 10:58:59,080 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 10:58:59,080 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 10:58:59,080 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 10:58:59,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:58:59,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 10:58:59,081 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:58:59,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:58:59,086 INFO L85 PathProgramCache]: Analyzing trace with hash 549, now seen corresponding path program 1 times [2023-08-26 10:58:59,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:58:59,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172743008] [2023-08-26 10:58:59,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:59,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:58:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:59,155 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 10:58:59,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:58:59,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172743008] [2023-08-26 10:58:59,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172743008] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:58:59,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:58:59,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 10:58:59,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859517265] [2023-08-26 10:58:59,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:58:59,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 10:58:59,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:58:59,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 10:58:59,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 10:58:59,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 313 [2023-08-26 10:58:59,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 68 flow. Second operand has 2 states, 2 states have (on average 135.5) internal successors, (271), 2 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:59,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:58:59,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 313 [2023-08-26 10:58:59,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:58:59,223 INFO L124 PetriNetUnfolderBase]: 21/40 cut-off events. [2023-08-26 10:58:59,223 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 10:58:59,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 40 events. 21/40 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 9 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 60. Up to 41 conditions per place. [2023-08-26 10:58:59,224 INFO L140 encePairwiseOnDemand]: 298/313 looper letters, 13 selfloop transitions, 0 changer transitions 0/13 dead transitions. [2023-08-26 10:58:59,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 13 transitions, 64 flow [2023-08-26 10:58:59,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 10:58:59,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 10:58:59,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 298 transitions. [2023-08-26 10:58:59,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.476038338658147 [2023-08-26 10:58:59,237 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 298 transitions. [2023-08-26 10:58:59,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 298 transitions. [2023-08-26 10:58:59,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:58:59,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 298 transitions. [2023-08-26 10:58:59,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 149.0) internal successors, (298), 2 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:59,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 313.0) internal successors, (939), 3 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:59,249 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 313.0) internal successors, (939), 3 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:59,250 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 68 flow. Second operand 2 states and 298 transitions. [2023-08-26 10:58:59,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 13 transitions, 64 flow [2023-08-26 10:58:59,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 13 transitions, 56 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 10:58:59,254 INFO L231 Difference]: Finished difference. Result has 15 places, 13 transitions, 30 flow [2023-08-26 10:58:59,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=30, PETRI_PLACES=15, PETRI_TRANSITIONS=13} [2023-08-26 10:58:59,258 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -18 predicate places. [2023-08-26 10:58:59,259 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 13 transitions, 30 flow [2023-08-26 10:58:59,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 135.5) internal successors, (271), 2 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:59,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:58:59,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:58:59,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 10:58:59,260 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:58:59,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:58:59,260 INFO L85 PathProgramCache]: Analyzing trace with hash 397207376, now seen corresponding path program 1 times [2023-08-26 10:58:59,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:58:59,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687638022] [2023-08-26 10:58:59,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:59,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:58:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:59,560 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 10:58:59,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:58:59,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687638022] [2023-08-26 10:58:59,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687638022] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:58:59,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:58:59,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 10:58:59,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627821457] [2023-08-26 10:58:59,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:58:59,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 10:58:59,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:58:59,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 10:58:59,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 10:58:59,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:58:59,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 13 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:59,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:58:59,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:58:59,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:58:59,619 INFO L124 PetriNetUnfolderBase]: 41/77 cut-off events. [2023-08-26 10:58:59,620 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 10:58:59,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 77 events. 41/77 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 167 event pairs, 9 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 159. Up to 51 conditions per place. [2023-08-26 10:58:59,621 INFO L140 encePairwiseOnDemand]: 309/313 looper letters, 19 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2023-08-26 10:58:59,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 23 transitions, 99 flow [2023-08-26 10:58:59,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 10:58:59,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 10:58:59,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2023-08-26 10:58:59,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40894568690095845 [2023-08-26 10:58:59,628 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2023-08-26 10:58:59,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2023-08-26 10:58:59,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:58:59,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2023-08-26 10:58:59,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:59,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 313.0) internal successors, (1252), 4 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:59,637 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 313.0) internal successors, (1252), 4 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:59,637 INFO L175 Difference]: Start difference. First operand has 15 places, 13 transitions, 30 flow. Second operand 3 states and 384 transitions. [2023-08-26 10:58:59,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 23 transitions, 99 flow [2023-08-26 10:58:59,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 23 transitions, 99 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 10:58:59,638 INFO L231 Difference]: Finished difference. Result has 18 places, 15 transitions, 49 flow [2023-08-26 10:58:59,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=18, PETRI_TRANSITIONS=15} [2023-08-26 10:58:59,639 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -15 predicate places. [2023-08-26 10:58:59,639 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 15 transitions, 49 flow [2023-08-26 10:58:59,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:59,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:58:59,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:58:59,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 10:58:59,641 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:58:59,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:58:59,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1423903900, now seen corresponding path program 1 times [2023-08-26 10:58:59,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:58:59,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882003778] [2023-08-26 10:58:59,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:59,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:58:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:59,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:58:59,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:58:59,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882003778] [2023-08-26 10:58:59,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882003778] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:58:59,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:58:59,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 10:58:59,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102586815] [2023-08-26 10:58:59,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:58:59,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 10:58:59,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:58:59,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 10:58:59,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 10:58:59,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:58:59,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 15 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:59,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:58:59,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:58:59,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:58:59,794 INFO L124 PetriNetUnfolderBase]: 35/71 cut-off events. [2023-08-26 10:58:59,794 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-08-26 10:58:59,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 71 events. 35/71 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 156 event pairs, 6 based on Foata normal form. 6/77 useless extension candidates. Maximal degree in co-relation 173. Up to 45 conditions per place. [2023-08-26 10:58:59,795 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 15 selfloop transitions, 3 changer transitions 10/28 dead transitions. [2023-08-26 10:58:59,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 28 transitions, 135 flow [2023-08-26 10:58:59,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 10:58:59,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 10:58:59,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 510 transitions. [2023-08-26 10:58:59,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4073482428115016 [2023-08-26 10:58:59,797 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 510 transitions. [2023-08-26 10:58:59,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 510 transitions. [2023-08-26 10:58:59,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:58:59,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 510 transitions. [2023-08-26 10:58:59,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.5) internal successors, (510), 4 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:59,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:59,802 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:59,803 INFO L175 Difference]: Start difference. First operand has 18 places, 15 transitions, 49 flow. Second operand 4 states and 510 transitions. [2023-08-26 10:58:59,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 28 transitions, 135 flow [2023-08-26 10:58:59,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 28 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 10:58:59,804 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 59 flow [2023-08-26 10:58:59,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=59, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-26 10:58:59,805 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -12 predicate places. [2023-08-26 10:58:59,805 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 59 flow [2023-08-26 10:58:59,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:59,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:58:59,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:58:59,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 10:58:59,806 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:58:59,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:58:59,806 INFO L85 PathProgramCache]: Analyzing trace with hash 318577560, now seen corresponding path program 2 times [2023-08-26 10:58:59,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:58:59,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409241374] [2023-08-26 10:58:59,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:59,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:58:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:58:59,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:58:59,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409241374] [2023-08-26 10:58:59,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409241374] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:58:59,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182976014] [2023-08-26 10:58:59,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:58:59,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:58:59,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:58:59,869 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 10:58:59,899 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 10:58:59,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:58:59,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:58:59,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 10:58:59,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:00,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:00,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:00,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:00,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182976014] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:00,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 10:59:00,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-08-26 10:59:00,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940248818] [2023-08-26 10:59:00,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:59:00,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 10:59:00,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:00,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 10:59:00,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-26 10:59:00,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:00,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:00,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:00,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:00,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:00,112 INFO L124 PetriNetUnfolderBase]: 40/79 cut-off events. [2023-08-26 10:59:00,112 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-26 10:59:00,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 79 events. 40/79 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 171 event pairs, 2 based on Foata normal form. 6/85 useless extension candidates. Maximal degree in co-relation 226. Up to 39 conditions per place. [2023-08-26 10:59:00,113 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 24 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-08-26 10:59:00,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 30 transitions, 165 flow [2023-08-26 10:59:00,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 10:59:00,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 10:59:00,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 510 transitions. [2023-08-26 10:59:00,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4073482428115016 [2023-08-26 10:59:00,115 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 510 transitions. [2023-08-26 10:59:00,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 510 transitions. [2023-08-26 10:59:00,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:00,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 510 transitions. [2023-08-26 10:59:00,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.5) internal successors, (510), 4 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:00,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:00,120 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:00,120 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 59 flow. Second operand 4 states and 510 transitions. [2023-08-26 10:59:00,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 30 transitions, 165 flow [2023-08-26 10:59:00,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 30 transitions, 155 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-26 10:59:00,122 INFO L231 Difference]: Finished difference. Result has 23 places, 18 transitions, 88 flow [2023-08-26 10:59:00,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=23, PETRI_TRANSITIONS=18} [2023-08-26 10:59:00,123 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -10 predicate places. [2023-08-26 10:59:00,123 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 18 transitions, 88 flow [2023-08-26 10:59:00,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:00,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:00,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:00,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 10:59:00,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:00,330 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:00,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:00,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1923328183, now seen corresponding path program 1 times [2023-08-26 10:59:00,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:00,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479483926] [2023-08-26 10:59:00,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:00,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:00,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:00,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479483926] [2023-08-26 10:59:00,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479483926] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:00,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314748654] [2023-08-26 10:59:00,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:00,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:00,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:00,430 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 10:59:00,476 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 10:59:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:00,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 10:59:00,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:00,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:00,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:00,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:00,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314748654] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:00,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 10:59:00,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-08-26 10:59:00,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982291427] [2023-08-26 10:59:00,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:59:00,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 10:59:00,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:00,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 10:59:00,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-26 10:59:00,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:00,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:00,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:00,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:00,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:00,659 INFO L124 PetriNetUnfolderBase]: 48/99 cut-off events. [2023-08-26 10:59:00,660 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-08-26 10:59:00,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 99 events. 48/99 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 242 event pairs, 5 based on Foata normal form. 4/103 useless extension candidates. Maximal degree in co-relation 329. Up to 64 conditions per place. [2023-08-26 10:59:00,661 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 25 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-08-26 10:59:00,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 31 transitions, 196 flow [2023-08-26 10:59:00,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 10:59:00,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 10:59:00,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 508 transitions. [2023-08-26 10:59:00,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4057507987220447 [2023-08-26 10:59:00,665 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 508 transitions. [2023-08-26 10:59:00,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 508 transitions. [2023-08-26 10:59:00,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:00,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 508 transitions. [2023-08-26 10:59:00,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:00,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:00,670 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:00,670 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 88 flow. Second operand 4 states and 508 transitions. [2023-08-26 10:59:00,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 31 transitions, 196 flow [2023-08-26 10:59:00,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 196 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 10:59:00,674 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 127 flow [2023-08-26 10:59:00,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2023-08-26 10:59:00,677 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -5 predicate places. [2023-08-26 10:59:00,677 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 127 flow [2023-08-26 10:59:00,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:00,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:00,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:00,688 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 10:59:00,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:00,888 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:00,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:00,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1973185195, now seen corresponding path program 1 times [2023-08-26 10:59:00,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:00,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700332066] [2023-08-26 10:59:00,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:00,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:01,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:01,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:01,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700332066] [2023-08-26 10:59:01,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700332066] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:01,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215771676] [2023-08-26 10:59:01,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:01,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:01,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:01,066 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 10:59:01,077 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 10:59:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:01,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-26 10:59:01,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:01,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:01,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:01,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215771676] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:01,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:01,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 4 [2023-08-26 10:59:01,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400094073] [2023-08-26 10:59:01,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:01,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:59:01,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:01,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:59:01,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-26 10:59:01,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:01,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 127 flow. Second operand has 6 states, 6 states have (on average 123.16666666666667) internal successors, (739), 6 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:01,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:01,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:01,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:01,316 INFO L124 PetriNetUnfolderBase]: 123/244 cut-off events. [2023-08-26 10:59:01,316 INFO L125 PetriNetUnfolderBase]: For 433/433 co-relation queries the response was YES. [2023-08-26 10:59:01,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 946 conditions, 244 events. 123/244 cut-off events. For 433/433 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 908 event pairs, 14 based on Foata normal form. 14/258 useless extension candidates. Maximal degree in co-relation 937. Up to 95 conditions per place. [2023-08-26 10:59:01,320 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 44 selfloop transitions, 18 changer transitions 1/63 dead transitions. [2023-08-26 10:59:01,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 63 transitions, 455 flow [2023-08-26 10:59:01,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:59:01,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:59:01,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 771 transitions. [2023-08-26 10:59:01,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41054313099041534 [2023-08-26 10:59:01,323 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 771 transitions. [2023-08-26 10:59:01,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 771 transitions. [2023-08-26 10:59:01,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:01,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 771 transitions. [2023-08-26 10:59:01,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 128.5) internal successors, (771), 6 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 10:59:01,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:01,329 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:01,329 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 127 flow. Second operand 6 states and 771 transitions. [2023-08-26 10:59:01,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 63 transitions, 455 flow [2023-08-26 10:59:01,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 63 transitions, 451 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-26 10:59:01,335 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 307 flow [2023-08-26 10:59:01,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2023-08-26 10:59:01,337 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-08-26 10:59:01,337 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 307 flow [2023-08-26 10:59:01,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 123.16666666666667) internal successors, (739), 6 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:01,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:01,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:01,347 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 10:59:01,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:01,544 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:01,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:01,544 INFO L85 PathProgramCache]: Analyzing trace with hash 351148649, now seen corresponding path program 2 times [2023-08-26 10:59:01,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:01,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098893068] [2023-08-26 10:59:01,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:01,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:01,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:01,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:01,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098893068] [2023-08-26 10:59:01,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098893068] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:01,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339700136] [2023-08-26 10:59:01,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:59:01,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:01,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:01,675 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 10:59:01,703 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 10:59:01,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:59:01,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:01,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-26 10:59:01,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:01,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:01,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:01,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:01,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339700136] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:01,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:01,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 3 [2023-08-26 10:59:01,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883607156] [2023-08-26 10:59:01,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:01,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 10:59:01,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:01,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 10:59:01,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 10:59:01,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:01,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 307 flow. Second operand has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:01,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:01,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:01,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:01,925 INFO L124 PetriNetUnfolderBase]: 175/348 cut-off events. [2023-08-26 10:59:01,925 INFO L125 PetriNetUnfolderBase]: For 1349/1349 co-relation queries the response was YES. [2023-08-26 10:59:01,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 348 events. 175/348 cut-off events. For 1349/1349 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1453 event pairs, 28 based on Foata normal form. 6/354 useless extension candidates. Maximal degree in co-relation 1661. Up to 242 conditions per place. [2023-08-26 10:59:01,928 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 53 selfloop transitions, 15 changer transitions 1/69 dead transitions. [2023-08-26 10:59:01,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 69 transitions, 647 flow [2023-08-26 10:59:01,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 10:59:01,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 10:59:01,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 642 transitions. [2023-08-26 10:59:01,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41022364217252394 [2023-08-26 10:59:01,931 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 642 transitions. [2023-08-26 10:59:01,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 642 transitions. [2023-08-26 10:59:01,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:01,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 642 transitions. [2023-08-26 10:59:01,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.4) internal successors, (642), 5 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:01,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 313.0) internal successors, (1878), 6 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:01,935 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 313.0) internal successors, (1878), 6 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:01,935 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 307 flow. Second operand 5 states and 642 transitions. [2023-08-26 10:59:01,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 69 transitions, 647 flow [2023-08-26 10:59:01,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 69 transitions, 613 flow, removed 17 selfloop flow, removed 0 redundant places. [2023-08-26 10:59:01,942 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 433 flow [2023-08-26 10:59:01,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=433, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2023-08-26 10:59:01,942 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2023-08-26 10:59:01,942 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 433 flow [2023-08-26 10:59:01,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:01,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:01,945 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:01,956 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 10:59:02,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:02,155 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:02,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:02,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1019282872, now seen corresponding path program 3 times [2023-08-26 10:59:02,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:02,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119697991] [2023-08-26 10:59:02,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:02,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:02,209 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:02,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:02,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119697991] [2023-08-26 10:59:02,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119697991] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:02,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181087945] [2023-08-26 10:59:02,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:59:02,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:02,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:02,215 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 10:59:02,218 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 10:59:02,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 10:59:02,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:02,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 10:59:02,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:02,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:02,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:02,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:02,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181087945] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:02,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:02,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-08-26 10:59:02,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758647631] [2023-08-26 10:59:02,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:02,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 10:59:02,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:02,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 10:59:02,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-08-26 10:59:02,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:02,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 433 flow. Second operand has 9 states, 9 states have (on average 123.0) internal successors, (1107), 9 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:02,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:02,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:02,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:02,516 INFO L124 PetriNetUnfolderBase]: 190/412 cut-off events. [2023-08-26 10:59:02,517 INFO L125 PetriNetUnfolderBase]: For 2113/2113 co-relation queries the response was YES. [2023-08-26 10:59:02,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2087 conditions, 412 events. 190/412 cut-off events. For 2113/2113 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2010 event pairs, 8 based on Foata normal form. 24/436 useless extension candidates. Maximal degree in co-relation 2069. Up to 174 conditions per place. [2023-08-26 10:59:02,520 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 60 selfloop transitions, 30 changer transitions 7/97 dead transitions. [2023-08-26 10:59:02,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 97 transitions, 976 flow [2023-08-26 10:59:02,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 10:59:02,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 10:59:02,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1138 transitions. [2023-08-26 10:59:02,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4039758608448704 [2023-08-26 10:59:02,524 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1138 transitions. [2023-08-26 10:59:02,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1138 transitions. [2023-08-26 10:59:02,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:02,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1138 transitions. [2023-08-26 10:59:02,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.44444444444444) internal successors, (1138), 9 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:02,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 313.0) internal successors, (3130), 10 states have internal predecessors, (3130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:02,533 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 313.0) internal successors, (3130), 10 states have internal predecessors, (3130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:02,533 INFO L175 Difference]: Start difference. First operand has 44 places, 47 transitions, 433 flow. Second operand 9 states and 1138 transitions. [2023-08-26 10:59:02,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 97 transitions, 976 flow [2023-08-26 10:59:02,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 97 transitions, 954 flow, removed 11 selfloop flow, removed 0 redundant places. [2023-08-26 10:59:02,541 INFO L231 Difference]: Finished difference. Result has 57 places, 61 transitions, 720 flow [2023-08-26 10:59:02,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=720, PETRI_PLACES=57, PETRI_TRANSITIONS=61} [2023-08-26 10:59:02,542 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2023-08-26 10:59:02,542 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 61 transitions, 720 flow [2023-08-26 10:59:02,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 123.0) internal successors, (1107), 9 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:02,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:02,543 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:02,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-26 10:59:02,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:02,749 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:02,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:02,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1790744440, now seen corresponding path program 4 times [2023-08-26 10:59:02,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:02,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424193241] [2023-08-26 10:59:02,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:02,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:02,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:02,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:02,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424193241] [2023-08-26 10:59:02,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424193241] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:02,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214330011] [2023-08-26 10:59:02,814 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 10:59:02,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:02,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:02,815 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 10:59:02,838 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 10:59:02,895 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 10:59:02,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:02,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 10:59:02,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:02,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:02,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:02,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:02,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214330011] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:02,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:02,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2023-08-26 10:59:02,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610644347] [2023-08-26 10:59:02,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:02,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 10:59:02,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:02,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 10:59:02,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-08-26 10:59:02,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:02,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 61 transitions, 720 flow. Second operand has 9 states, 9 states have (on average 123.11111111111111) internal successors, (1108), 9 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:02,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:02,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:02,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:03,161 INFO L124 PetriNetUnfolderBase]: 183/409 cut-off events. [2023-08-26 10:59:03,161 INFO L125 PetriNetUnfolderBase]: For 3046/3046 co-relation queries the response was YES. [2023-08-26 10:59:03,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 409 events. 183/409 cut-off events. For 3046/3046 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2019 event pairs, 8 based on Foata normal form. 4/413 useless extension candidates. Maximal degree in co-relation 2369. Up to 119 conditions per place. [2023-08-26 10:59:03,165 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 63 selfloop transitions, 45 changer transitions 0/108 dead transitions. [2023-08-26 10:59:03,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 108 transitions, 1241 flow [2023-08-26 10:59:03,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 10:59:03,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 10:59:03,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1388 transitions. [2023-08-26 10:59:03,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4031367993029335 [2023-08-26 10:59:03,169 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1388 transitions. [2023-08-26 10:59:03,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1388 transitions. [2023-08-26 10:59:03,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:03,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1388 transitions. [2023-08-26 10:59:03,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 126.18181818181819) internal successors, (1388), 11 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:03,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 313.0) internal successors, (3756), 12 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:03,178 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 313.0) internal successors, (3756), 12 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:03,178 INFO L175 Difference]: Start difference. First operand has 57 places, 61 transitions, 720 flow. Second operand 11 states and 1388 transitions. [2023-08-26 10:59:03,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 108 transitions, 1241 flow [2023-08-26 10:59:03,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 108 transitions, 1140 flow, removed 49 selfloop flow, removed 1 redundant places. [2023-08-26 10:59:03,191 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 916 flow [2023-08-26 10:59:03,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=916, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2023-08-26 10:59:03,192 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 37 predicate places. [2023-08-26 10:59:03,192 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 916 flow [2023-08-26 10:59:03,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 123.11111111111111) internal successors, (1108), 9 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:03,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:03,193 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:03,201 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 10:59:03,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:03,398 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:03,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:03,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1584193273, now seen corresponding path program 5 times [2023-08-26 10:59:03,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:03,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749261580] [2023-08-26 10:59:03,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:03,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:03,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:03,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:03,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749261580] [2023-08-26 10:59:03,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749261580] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:03,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942472809] [2023-08-26 10:59:03,454 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 10:59:03,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:03,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:03,455 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 10:59:03,473 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 10:59:03,528 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 10:59:03,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:03,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 10:59:03,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:03,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:03,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:03,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:03,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942472809] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:03,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:03,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2023-08-26 10:59:03,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924070539] [2023-08-26 10:59:03,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:03,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 10:59:03,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:03,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 10:59:03,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-08-26 10:59:03,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:03,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 916 flow. Second operand has 9 states, 9 states have (on average 123.11111111111111) internal successors, (1108), 9 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:03,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:03,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:03,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:03,719 INFO L124 PetriNetUnfolderBase]: 173/375 cut-off events. [2023-08-26 10:59:03,719 INFO L125 PetriNetUnfolderBase]: For 3068/3068 co-relation queries the response was YES. [2023-08-26 10:59:03,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2290 conditions, 375 events. 173/375 cut-off events. For 3068/3068 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1745 event pairs, 10 based on Foata normal form. 4/379 useless extension candidates. Maximal degree in co-relation 2261. Up to 112 conditions per place. [2023-08-26 10:59:03,723 INFO L140 encePairwiseOnDemand]: 307/313 looper letters, 64 selfloop transitions, 25 changer transitions 6/95 dead transitions. [2023-08-26 10:59:03,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 95 transitions, 1297 flow [2023-08-26 10:59:03,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 10:59:03,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 10:59:03,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1005 transitions. [2023-08-26 10:59:03,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4013578274760383 [2023-08-26 10:59:03,726 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1005 transitions. [2023-08-26 10:59:03,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1005 transitions. [2023-08-26 10:59:03,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:03,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1005 transitions. [2023-08-26 10:59:03,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 125.625) internal successors, (1005), 8 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:03,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:03,733 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:03,734 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 916 flow. Second operand 8 states and 1005 transitions. [2023-08-26 10:59:03,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 95 transitions, 1297 flow [2023-08-26 10:59:03,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 95 transitions, 1196 flow, removed 38 selfloop flow, removed 5 redundant places. [2023-08-26 10:59:03,747 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 896 flow [2023-08-26 10:59:03,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=896, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2023-08-26 10:59:03,748 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 41 predicate places. [2023-08-26 10:59:03,748 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 896 flow [2023-08-26 10:59:03,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 123.11111111111111) internal successors, (1108), 9 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:03,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:03,749 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:03,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-26 10:59:03,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:03,955 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:03,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:03,956 INFO L85 PathProgramCache]: Analyzing trace with hash -456797180, now seen corresponding path program 6 times [2023-08-26 10:59:03,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:03,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568242905] [2023-08-26 10:59:03,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:03,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:04,018 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 10:59:04,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:04,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568242905] [2023-08-26 10:59:04,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568242905] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:04,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238366922] [2023-08-26 10:59:04,018 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 10:59:04,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:04,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:04,020 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 10:59:04,022 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 10:59:04,102 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-26 10:59:04,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:04,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 10:59:04,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:04,125 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 10:59:04,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:04,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:04,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238366922] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:04,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:04,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-08-26 10:59:04,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299762502] [2023-08-26 10:59:04,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:04,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 10:59:04,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:04,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 10:59:04,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-26 10:59:04,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:04,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 896 flow. Second operand has 9 states, 9 states have (on average 123.0) internal successors, (1107), 9 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:04,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:04,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:04,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:04,361 INFO L124 PetriNetUnfolderBase]: 197/426 cut-off events. [2023-08-26 10:59:04,361 INFO L125 PetriNetUnfolderBase]: For 3368/3368 co-relation queries the response was YES. [2023-08-26 10:59:04,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2533 conditions, 426 events. 197/426 cut-off events. For 3368/3368 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1973 event pairs, 10 based on Foata normal form. 10/436 useless extension candidates. Maximal degree in co-relation 2502. Up to 190 conditions per place. [2023-08-26 10:59:04,365 INFO L140 encePairwiseOnDemand]: 307/313 looper letters, 71 selfloop transitions, 48 changer transitions 0/119 dead transitions. [2023-08-26 10:59:04,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 119 transitions, 1574 flow [2023-08-26 10:59:04,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 10:59:04,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 10:59:04,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1257 transitions. [2023-08-26 10:59:04,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40159744408945686 [2023-08-26 10:59:04,369 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1257 transitions. [2023-08-26 10:59:04,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1257 transitions. [2023-08-26 10:59:04,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:04,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1257 transitions. [2023-08-26 10:59:04,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 125.7) internal successors, (1257), 10 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:04,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 313.0) internal successors, (3443), 11 states have internal predecessors, (3443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:04,377 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 313.0) internal successors, (3443), 11 states have internal predecessors, (3443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:04,377 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 896 flow. Second operand 10 states and 1257 transitions. [2023-08-26 10:59:04,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 119 transitions, 1574 flow [2023-08-26 10:59:04,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 119 transitions, 1476 flow, removed 42 selfloop flow, removed 3 redundant places. [2023-08-26 10:59:04,393 INFO L231 Difference]: Finished difference. Result has 86 places, 94 transitions, 1320 flow [2023-08-26 10:59:04,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1320, PETRI_PLACES=86, PETRI_TRANSITIONS=94} [2023-08-26 10:59:04,394 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 53 predicate places. [2023-08-26 10:59:04,394 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 94 transitions, 1320 flow [2023-08-26 10:59:04,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 123.0) internal successors, (1107), 9 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:04,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:04,395 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:04,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-26 10:59:04,601 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,SelfDestructingSolverStorable10 [2023-08-26 10:59:04,601 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:04,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:04,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1141776649, now seen corresponding path program 7 times [2023-08-26 10:59:04,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:04,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363959224] [2023-08-26 10:59:04,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:04,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:04,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:04,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:04,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363959224] [2023-08-26 10:59:04,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363959224] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:04,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964978286] [2023-08-26 10:59:04,657 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 10:59:04,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:04,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:04,658 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 10:59:04,661 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 10:59:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:04,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 10:59:04,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:04,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:04,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:04,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:04,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964978286] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:04,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:04,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-08-26 10:59:04,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876831609] [2023-08-26 10:59:04,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:04,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 10:59:04,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:04,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 10:59:04,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-08-26 10:59:04,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:04,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 94 transitions, 1320 flow. Second operand has 9 states, 9 states have (on average 123.0) internal successors, (1107), 9 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:04,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:04,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:04,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:04,963 INFO L124 PetriNetUnfolderBase]: 223/488 cut-off events. [2023-08-26 10:59:04,963 INFO L125 PetriNetUnfolderBase]: For 4311/4311 co-relation queries the response was YES. [2023-08-26 10:59:04,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3122 conditions, 488 events. 223/488 cut-off events. For 4311/4311 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2395 event pairs, 14 based on Foata normal form. 8/496 useless extension candidates. Maximal degree in co-relation 3087. Up to 167 conditions per place. [2023-08-26 10:59:04,969 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 87 selfloop transitions, 42 changer transitions 7/136 dead transitions. [2023-08-26 10:59:04,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 136 transitions, 2028 flow [2023-08-26 10:59:04,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 10:59:04,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 10:59:04,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1132 transitions. [2023-08-26 10:59:04,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40184593539226127 [2023-08-26 10:59:04,972 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1132 transitions. [2023-08-26 10:59:04,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1132 transitions. [2023-08-26 10:59:04,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:04,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1132 transitions. [2023-08-26 10:59:04,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 125.77777777777777) internal successors, (1132), 9 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:04,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 313.0) internal successors, (3130), 10 states have internal predecessors, (3130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:04,980 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 313.0) internal successors, (3130), 10 states have internal predecessors, (3130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:04,981 INFO L175 Difference]: Start difference. First operand has 86 places, 94 transitions, 1320 flow. Second operand 9 states and 1132 transitions. [2023-08-26 10:59:04,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 136 transitions, 2028 flow [2023-08-26 10:59:05,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 136 transitions, 1932 flow, removed 43 selfloop flow, removed 2 redundant places. [2023-08-26 10:59:05,004 INFO L231 Difference]: Finished difference. Result has 97 places, 104 transitions, 1592 flow [2023-08-26 10:59:05,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1592, PETRI_PLACES=97, PETRI_TRANSITIONS=104} [2023-08-26 10:59:05,005 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 64 predicate places. [2023-08-26 10:59:05,006 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 104 transitions, 1592 flow [2023-08-26 10:59:05,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 123.0) internal successors, (1107), 9 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:05,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:05,006 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:05,016 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 10:59:05,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:05,212 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:05,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:05,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1164749256, now seen corresponding path program 8 times [2023-08-26 10:59:05,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:05,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880205380] [2023-08-26 10:59:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:05,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:05,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:05,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880205380] [2023-08-26 10:59:05,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880205380] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:05,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855410482] [2023-08-26 10:59:05,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:59:05,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:05,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:05,273 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 10:59:05,308 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 10:59:05,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:59:05,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:05,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 10:59:05,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:05,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:05,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:05,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:05,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855410482] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:05,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:05,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2023-08-26 10:59:05,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328858437] [2023-08-26 10:59:05,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:05,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 10:59:05,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:05,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 10:59:05,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-08-26 10:59:05,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:05,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 104 transitions, 1592 flow. Second operand has 9 states, 9 states have (on average 123.11111111111111) internal successors, (1108), 9 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:05,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:05,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:05,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:05,599 INFO L124 PetriNetUnfolderBase]: 202/434 cut-off events. [2023-08-26 10:59:05,599 INFO L125 PetriNetUnfolderBase]: For 5027/5027 co-relation queries the response was YES. [2023-08-26 10:59:05,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2996 conditions, 434 events. 202/434 cut-off events. For 5027/5027 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2019 event pairs, 10 based on Foata normal form. 8/442 useless extension candidates. Maximal degree in co-relation 2957. Up to 168 conditions per place. [2023-08-26 10:59:05,605 INFO L140 encePairwiseOnDemand]: 307/313 looper letters, 80 selfloop transitions, 38 changer transitions 1/119 dead transitions. [2023-08-26 10:59:05,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 119 transitions, 1904 flow [2023-08-26 10:59:05,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 10:59:05,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 10:59:05,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1003 transitions. [2023-08-26 10:59:05,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005591054313099 [2023-08-26 10:59:05,609 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1003 transitions. [2023-08-26 10:59:05,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1003 transitions. [2023-08-26 10:59:05,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:05,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1003 transitions. [2023-08-26 10:59:05,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 125.375) internal successors, (1003), 8 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:05,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:05,616 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:05,616 INFO L175 Difference]: Start difference. First operand has 97 places, 104 transitions, 1592 flow. Second operand 8 states and 1003 transitions. [2023-08-26 10:59:05,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 119 transitions, 1904 flow [2023-08-26 10:59:05,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 119 transitions, 1811 flow, removed 45 selfloop flow, removed 1 redundant places. [2023-08-26 10:59:05,637 INFO L231 Difference]: Finished difference. Result has 104 places, 101 transitions, 1526 flow [2023-08-26 10:59:05,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1447, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1526, PETRI_PLACES=104, PETRI_TRANSITIONS=101} [2023-08-26 10:59:05,638 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 71 predicate places. [2023-08-26 10:59:05,638 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 101 transitions, 1526 flow [2023-08-26 10:59:05,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 123.11111111111111) internal successors, (1108), 9 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:05,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:05,639 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:05,645 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 10:59:05,844 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,SelfDestructingSolverStorable12 [2023-08-26 10:59:05,845 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:05,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:05,845 INFO L85 PathProgramCache]: Analyzing trace with hash -2103524937, now seen corresponding path program 9 times [2023-08-26 10:59:05,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:05,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282207060] [2023-08-26 10:59:05,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:05,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:05,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:05,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:05,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282207060] [2023-08-26 10:59:05,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282207060] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:05,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521903734] [2023-08-26 10:59:05,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:59:05,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:05,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:05,909 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 10:59:05,911 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 10:59:05,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 10:59:06,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:06,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-26 10:59:06,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:06,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:59:06,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 10:59:06,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521903734] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:59:06,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 10:59:06,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2023-08-26 10:59:06,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265166035] [2023-08-26 10:59:06,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:59:06,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:59:06,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:06,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:59:06,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-26 10:59:06,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:06,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 101 transitions, 1526 flow. Second operand has 6 states, 6 states have (on average 122.33333333333333) internal successors, (734), 6 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:06,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:06,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:06,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:06,216 INFO L124 PetriNetUnfolderBase]: 241/554 cut-off events. [2023-08-26 10:59:06,216 INFO L125 PetriNetUnfolderBase]: For 6497/6497 co-relation queries the response was YES. [2023-08-26 10:59:06,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3743 conditions, 554 events. 241/554 cut-off events. For 6497/6497 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3047 event pairs, 19 based on Foata normal form. 12/566 useless extension candidates. Maximal degree in co-relation 3702. Up to 217 conditions per place. [2023-08-26 10:59:06,221 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 91 selfloop transitions, 17 changer transitions 35/143 dead transitions. [2023-08-26 10:59:06,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 143 transitions, 2235 flow [2023-08-26 10:59:06,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:59:06,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:59:06,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 760 transitions. [2023-08-26 10:59:06,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40468583599574015 [2023-08-26 10:59:06,224 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 760 transitions. [2023-08-26 10:59:06,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 760 transitions. [2023-08-26 10:59:06,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:06,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 760 transitions. [2023-08-26 10:59:06,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.66666666666667) internal successors, (760), 6 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 10:59:06,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:06,229 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:06,229 INFO L175 Difference]: Start difference. First operand has 104 places, 101 transitions, 1526 flow. Second operand 6 states and 760 transitions. [2023-08-26 10:59:06,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 143 transitions, 2235 flow [2023-08-26 10:59:06,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 143 transitions, 2178 flow, removed 19 selfloop flow, removed 2 redundant places. [2023-08-26 10:59:06,255 INFO L231 Difference]: Finished difference. Result has 111 places, 85 transitions, 1325 flow [2023-08-26 10:59:06,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1477, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1325, PETRI_PLACES=111, PETRI_TRANSITIONS=85} [2023-08-26 10:59:06,255 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 78 predicate places. [2023-08-26 10:59:06,256 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 85 transitions, 1325 flow [2023-08-26 10:59:06,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.33333333333333) internal successors, (734), 6 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:06,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:06,256 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:06,264 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 10:59:06,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-26 10:59:06,462 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:06,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:06,462 INFO L85 PathProgramCache]: Analyzing trace with hash 2107028119, now seen corresponding path program 10 times [2023-08-26 10:59:06,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:06,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845176193] [2023-08-26 10:59:06,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:06,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:06,532 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 10:59:06,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:06,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845176193] [2023-08-26 10:59:06,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845176193] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:06,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569603600] [2023-08-26 10:59:06,532 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 10:59:06,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:06,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:06,533 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 10:59:06,541 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 10:59:06,626 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 10:59:06,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:06,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 10:59:06,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:06,646 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 10:59:06,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:06,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569603600] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:06,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:06,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2023-08-26 10:59:06,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939300189] [2023-08-26 10:59:06,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:06,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 10:59:06,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:06,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 10:59:06,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-08-26 10:59:06,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:06,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 85 transitions, 1325 flow. Second operand has 9 states, 9 states have (on average 123.11111111111111) internal successors, (1108), 9 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:06,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:06,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:06,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:06,890 INFO L124 PetriNetUnfolderBase]: 228/489 cut-off events. [2023-08-26 10:59:06,891 INFO L125 PetriNetUnfolderBase]: For 7653/7653 co-relation queries the response was YES. [2023-08-26 10:59:06,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3505 conditions, 489 events. 228/489 cut-off events. For 7653/7653 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2391 event pairs, 12 based on Foata normal form. 4/493 useless extension candidates. Maximal degree in co-relation 3459. Up to 157 conditions per place. [2023-08-26 10:59:06,897 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 90 selfloop transitions, 51 changer transitions 0/141 dead transitions. [2023-08-26 10:59:06,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 141 transitions, 2103 flow [2023-08-26 10:59:06,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 10:59:06,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 10:59:06,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1390 transitions. [2023-08-26 10:59:06,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403717688062736 [2023-08-26 10:59:06,901 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1390 transitions. [2023-08-26 10:59:06,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1390 transitions. [2023-08-26 10:59:06,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:06,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1390 transitions. [2023-08-26 10:59:06,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 126.36363636363636) internal successors, (1390), 11 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:06,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 313.0) internal successors, (3756), 12 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:06,909 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 313.0) internal successors, (3756), 12 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:06,909 INFO L175 Difference]: Start difference. First operand has 111 places, 85 transitions, 1325 flow. Second operand 11 states and 1390 transitions. [2023-08-26 10:59:06,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 141 transitions, 2103 flow [2023-08-26 10:59:06,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 141 transitions, 2007 flow, removed 27 selfloop flow, removed 6 redundant places. [2023-08-26 10:59:06,934 INFO L231 Difference]: Finished difference. Result has 117 places, 98 transitions, 1661 flow [2023-08-26 10:59:06,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1661, PETRI_PLACES=117, PETRI_TRANSITIONS=98} [2023-08-26 10:59:06,935 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 84 predicate places. [2023-08-26 10:59:06,935 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 98 transitions, 1661 flow [2023-08-26 10:59:06,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 123.11111111111111) internal successors, (1108), 9 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:06,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:06,935 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:06,944 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 10:59:07,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-26 10:59:07,141 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:07,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:07,142 INFO L85 PathProgramCache]: Analyzing trace with hash 997872220, now seen corresponding path program 11 times [2023-08-26 10:59:07,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:07,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899523088] [2023-08-26 10:59:07,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:07,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:07,296 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:07,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:07,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899523088] [2023-08-26 10:59:07,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899523088] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:07,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243466814] [2023-08-26 10:59:07,297 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 10:59:07,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:07,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:07,298 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 10:59:07,301 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 10:59:07,381 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:59:07,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:07,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-26 10:59:07,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:07,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:07,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:07,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:07,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243466814] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:07,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:07,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 7 [2023-08-26 10:59:07,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370194567] [2023-08-26 10:59:07,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:07,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 10:59:07,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:07,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 10:59:07,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-26 10:59:07,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:07,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 98 transitions, 1661 flow. Second operand has 9 states, 9 states have (on average 122.55555555555556) internal successors, (1103), 9 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:07,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:07,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:07,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:07,693 INFO L124 PetriNetUnfolderBase]: 430/879 cut-off events. [2023-08-26 10:59:07,693 INFO L125 PetriNetUnfolderBase]: For 21322/21322 co-relation queries the response was YES. [2023-08-26 10:59:07,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6912 conditions, 879 events. 430/879 cut-off events. For 21322/21322 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4893 event pairs, 58 based on Foata normal form. 38/917 useless extension candidates. Maximal degree in co-relation 6865. Up to 425 conditions per place. [2023-08-26 10:59:07,704 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 119 selfloop transitions, 60 changer transitions 7/186 dead transitions. [2023-08-26 10:59:07,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 186 transitions, 3286 flow [2023-08-26 10:59:07,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 10:59:07,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 10:59:07,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1029 transitions. [2023-08-26 10:59:07,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41094249201277955 [2023-08-26 10:59:07,707 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1029 transitions. [2023-08-26 10:59:07,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1029 transitions. [2023-08-26 10:59:07,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:07,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1029 transitions. [2023-08-26 10:59:07,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.625) internal successors, (1029), 8 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:07,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:07,713 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:07,713 INFO L175 Difference]: Start difference. First operand has 117 places, 98 transitions, 1661 flow. Second operand 8 states and 1029 transitions. [2023-08-26 10:59:07,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 186 transitions, 3286 flow [2023-08-26 10:59:07,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 186 transitions, 3040 flow, removed 100 selfloop flow, removed 4 redundant places. [2023-08-26 10:59:07,762 INFO L231 Difference]: Finished difference. Result has 126 places, 138 transitions, 2486 flow [2023-08-26 10:59:07,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2486, PETRI_PLACES=126, PETRI_TRANSITIONS=138} [2023-08-26 10:59:07,762 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 93 predicate places. [2023-08-26 10:59:07,763 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 138 transitions, 2486 flow [2023-08-26 10:59:07,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.55555555555556) internal successors, (1103), 9 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:07,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:07,763 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:07,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-26 10:59:07,969 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,SelfDestructingSolverStorable15 [2023-08-26 10:59:07,969 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:07,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:07,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1102336448, now seen corresponding path program 12 times [2023-08-26 10:59:07,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:07,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044912751] [2023-08-26 10:59:07,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:07,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:59:08,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:08,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044912751] [2023-08-26 10:59:08,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044912751] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:08,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736503662] [2023-08-26 10:59:08,089 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 10:59:08,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:08,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:08,093 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 10:59:08,116 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 10:59:08,195 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 10:59:08,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:08,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-26 10:59:08,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:08,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:59:08,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:08,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:59:08,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736503662] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:08,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:08,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 4 [2023-08-26 10:59:08,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860068534] [2023-08-26 10:59:08,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:08,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:59:08,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:08,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:59:08,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-26 10:59:08,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:08,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 138 transitions, 2486 flow. Second operand has 6 states, 6 states have (on average 122.83333333333333) internal successors, (737), 6 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:08,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:08,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:08,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:08,544 INFO L124 PetriNetUnfolderBase]: 538/1145 cut-off events. [2023-08-26 10:59:08,544 INFO L125 PetriNetUnfolderBase]: For 26539/26539 co-relation queries the response was YES. [2023-08-26 10:59:08,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9211 conditions, 1145 events. 538/1145 cut-off events. For 26539/26539 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7122 event pairs, 111 based on Foata normal form. 10/1155 useless extension candidates. Maximal degree in co-relation 9158. Up to 815 conditions per place. [2023-08-26 10:59:08,560 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 152 selfloop transitions, 52 changer transitions 6/210 dead transitions. [2023-08-26 10:59:08,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 210 transitions, 3954 flow [2023-08-26 10:59:08,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:59:08,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:59:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 773 transitions. [2023-08-26 10:59:08,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116080937167199 [2023-08-26 10:59:08,562 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 773 transitions. [2023-08-26 10:59:08,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 773 transitions. [2023-08-26 10:59:08,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:08,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 773 transitions. [2023-08-26 10:59:08,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 128.83333333333334) internal successors, (773), 6 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:08,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:08,566 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:08,567 INFO L175 Difference]: Start difference. First operand has 126 places, 138 transitions, 2486 flow. Second operand 6 states and 773 transitions. [2023-08-26 10:59:08,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 210 transitions, 3954 flow [2023-08-26 10:59:08,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 210 transitions, 3814 flow, removed 70 selfloop flow, removed 0 redundant places. [2023-08-26 10:59:08,653 INFO L231 Difference]: Finished difference. Result has 135 places, 170 transitions, 3159 flow [2023-08-26 10:59:08,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=2346, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3159, PETRI_PLACES=135, PETRI_TRANSITIONS=170} [2023-08-26 10:59:08,653 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 102 predicate places. [2023-08-26 10:59:08,654 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 170 transitions, 3159 flow [2023-08-26 10:59:08,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.83333333333333) internal successors, (737), 6 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:08,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:08,654 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:08,664 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 10:59:08,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:08,860 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:08,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:08,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1464946210, now seen corresponding path program 13 times [2023-08-26 10:59:08,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:08,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738567111] [2023-08-26 10:59:08,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:08,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:08,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:59:08,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:08,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738567111] [2023-08-26 10:59:08,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738567111] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:08,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216882672] [2023-08-26 10:59:08,962 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 10:59:08,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:08,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:08,964 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 10:59:08,983 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 10:59:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:09,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-26 10:59:09,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:09,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:59:09,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:09,100 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:59:09,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216882672] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:09,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:09,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 7 [2023-08-26 10:59:09,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456612581] [2023-08-26 10:59:09,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:09,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 10:59:09,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:09,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 10:59:09,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-26 10:59:09,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:09,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 170 transitions, 3159 flow. Second operand has 9 states, 9 states have (on average 122.22222222222223) internal successors, (1100), 9 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:09,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:09,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:09,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:09,456 INFO L124 PetriNetUnfolderBase]: 610/1293 cut-off events. [2023-08-26 10:59:09,456 INFO L125 PetriNetUnfolderBase]: For 32556/32556 co-relation queries the response was YES. [2023-08-26 10:59:09,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10894 conditions, 1293 events. 610/1293 cut-off events. For 32556/32556 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8201 event pairs, 123 based on Foata normal form. 14/1307 useless extension candidates. Maximal degree in co-relation 10836. Up to 1082 conditions per place. [2023-08-26 10:59:09,474 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 177 selfloop transitions, 44 changer transitions 5/226 dead transitions. [2023-08-26 10:59:09,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 226 transitions, 4541 flow [2023-08-26 10:59:09,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 10:59:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 10:59:09,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1021 transitions. [2023-08-26 10:59:09,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4077476038338658 [2023-08-26 10:59:09,476 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1021 transitions. [2023-08-26 10:59:09,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1021 transitions. [2023-08-26 10:59:09,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:09,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1021 transitions. [2023-08-26 10:59:09,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 127.625) internal successors, (1021), 8 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:09,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:09,481 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:09,481 INFO L175 Difference]: Start difference. First operand has 135 places, 170 transitions, 3159 flow. Second operand 8 states and 1021 transitions. [2023-08-26 10:59:09,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 226 transitions, 4541 flow [2023-08-26 10:59:09,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 226 transitions, 4353 flow, removed 79 selfloop flow, removed 2 redundant places. [2023-08-26 10:59:09,580 INFO L231 Difference]: Finished difference. Result has 144 places, 193 transitions, 3709 flow [2023-08-26 10:59:09,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=2979, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3709, PETRI_PLACES=144, PETRI_TRANSITIONS=193} [2023-08-26 10:59:09,581 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 111 predicate places. [2023-08-26 10:59:09,581 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 193 transitions, 3709 flow [2023-08-26 10:59:09,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.22222222222223) internal successors, (1100), 9 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:09,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:09,582 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:09,587 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 10:59:09,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-26 10:59:09,787 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:09,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:09,788 INFO L85 PathProgramCache]: Analyzing trace with hash -2061029717, now seen corresponding path program 14 times [2023-08-26 10:59:09,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:09,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278952173] [2023-08-26 10:59:09,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:09,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:09,852 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:09,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:09,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278952173] [2023-08-26 10:59:09,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278952173] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:09,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98611921] [2023-08-26 10:59:09,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:59:09,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:09,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:09,854 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 10:59:09,857 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 10:59:09,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:59:09,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:09,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 10:59:09,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:09,976 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:09,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:10,035 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:10,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98611921] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:10,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:10,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-26 10:59:10,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228999100] [2023-08-26 10:59:10,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:10,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 10:59:10,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:10,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 10:59:10,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2023-08-26 10:59:10,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:10,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 193 transitions, 3709 flow. Second operand has 12 states, 12 states have (on average 122.5) internal successors, (1470), 12 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:10,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:10,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:10,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:10,434 INFO L124 PetriNetUnfolderBase]: 619/1389 cut-off events. [2023-08-26 10:59:10,434 INFO L125 PetriNetUnfolderBase]: For 42678/42678 co-relation queries the response was YES. [2023-08-26 10:59:10,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11750 conditions, 1389 events. 619/1389 cut-off events. For 42678/42678 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 9424 event pairs, 32 based on Foata normal form. 56/1445 useless extension candidates. Maximal degree in co-relation 11686. Up to 424 conditions per place. [2023-08-26 10:59:10,458 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 132 selfloop transitions, 117 changer transitions 20/269 dead transitions. [2023-08-26 10:59:10,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 269 transitions, 5433 flow [2023-08-26 10:59:10,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 10:59:10,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 10:59:10,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1513 transitions. [2023-08-26 10:59:10,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40282215122470716 [2023-08-26 10:59:10,463 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1513 transitions. [2023-08-26 10:59:10,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1513 transitions. [2023-08-26 10:59:10,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:10,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1513 transitions. [2023-08-26 10:59:10,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 126.08333333333333) internal successors, (1513), 12 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:10,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 313.0) internal successors, (4069), 13 states have internal predecessors, (4069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:10,475 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 313.0) internal successors, (4069), 13 states have internal predecessors, (4069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:10,475 INFO L175 Difference]: Start difference. First operand has 144 places, 193 transitions, 3709 flow. Second operand 12 states and 1513 transitions. [2023-08-26 10:59:10,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 269 transitions, 5433 flow [2023-08-26 10:59:10,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 269 transitions, 5172 flow, removed 129 selfloop flow, removed 1 redundant places. [2023-08-26 10:59:10,597 INFO L231 Difference]: Finished difference. Result has 160 places, 209 transitions, 4503 flow [2023-08-26 10:59:10,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=3468, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4503, PETRI_PLACES=160, PETRI_TRANSITIONS=209} [2023-08-26 10:59:10,597 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 127 predicate places. [2023-08-26 10:59:10,597 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 209 transitions, 4503 flow [2023-08-26 10:59:10,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.5) internal successors, (1470), 12 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:10,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:10,598 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:10,603 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 10:59:10,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:10,801 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:10,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:10,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1413337705, now seen corresponding path program 15 times [2023-08-26 10:59:10,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:10,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397763707] [2023-08-26 10:59:10,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:10,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:10,899 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:10,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:10,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397763707] [2023-08-26 10:59:10,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397763707] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:10,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091535033] [2023-08-26 10:59:10,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:59:10,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:10,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:10,901 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 10:59:10,905 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 10:59:11,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 10:59:11,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:11,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-26 10:59:11,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 10:59:11,078 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 10:59:11,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091535033] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:59:11,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 10:59:11,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-26 10:59:11,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380128141] [2023-08-26 10:59:11,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:59:11,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:59:11,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:11,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:59:11,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-08-26 10:59:11,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:11,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 209 transitions, 4503 flow. Second operand has 6 states, 6 states have (on average 122.5) internal successors, (735), 6 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:11,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:11,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:11,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:11,395 INFO L124 PetriNetUnfolderBase]: 595/1319 cut-off events. [2023-08-26 10:59:11,395 INFO L125 PetriNetUnfolderBase]: For 43463/43463 co-relation queries the response was YES. [2023-08-26 10:59:11,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11921 conditions, 1319 events. 595/1319 cut-off events. For 43463/43463 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 8793 event pairs, 37 based on Foata normal form. 9/1328 useless extension candidates. Maximal degree in co-relation 11851. Up to 724 conditions per place. [2023-08-26 10:59:11,412 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 196 selfloop transitions, 36 changer transitions 25/257 dead transitions. [2023-08-26 10:59:11,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 257 transitions, 5863 flow [2023-08-26 10:59:11,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:59:11,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:59:11,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 758 transitions. [2023-08-26 10:59:11,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036208732694356 [2023-08-26 10:59:11,414 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 758 transitions. [2023-08-26 10:59:11,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 758 transitions. [2023-08-26 10:59:11,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:11,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 758 transitions. [2023-08-26 10:59:11,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.33333333333333) internal successors, (758), 6 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:11,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:11,418 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:11,418 INFO L175 Difference]: Start difference. First operand has 160 places, 209 transitions, 4503 flow. Second operand 6 states and 758 transitions. [2023-08-26 10:59:11,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 257 transitions, 5863 flow [2023-08-26 10:59:11,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 257 transitions, 5336 flow, removed 262 selfloop flow, removed 1 redundant places. [2023-08-26 10:59:11,586 INFO L231 Difference]: Finished difference. Result has 168 places, 205 transitions, 4272 flow [2023-08-26 10:59:11,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=4096, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4272, PETRI_PLACES=168, PETRI_TRANSITIONS=205} [2023-08-26 10:59:11,587 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 135 predicate places. [2023-08-26 10:59:11,587 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 205 transitions, 4272 flow [2023-08-26 10:59:11,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.5) internal successors, (735), 6 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:11,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:11,587 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:11,595 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 10:59:11,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:11,793 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:11,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:11,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1497751945, now seen corresponding path program 16 times [2023-08-26 10:59:11,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:11,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581677662] [2023-08-26 10:59:11,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:11,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:11,861 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:11,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:11,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581677662] [2023-08-26 10:59:11,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581677662] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:11,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986454496] [2023-08-26 10:59:11,862 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 10:59:11,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:11,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:11,863 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 10:59:11,889 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 10:59:11,971 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 10:59:11,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:11,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 10:59:11,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:11,988 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:11,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:12,065 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:12,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986454496] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:12,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:12,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 7] total 11 [2023-08-26 10:59:12,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593020217] [2023-08-26 10:59:12,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:12,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 10:59:12,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:12,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 10:59:12,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-08-26 10:59:12,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:12,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 205 transitions, 4272 flow. Second operand has 12 states, 12 states have (on average 122.66666666666667) internal successors, (1472), 12 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:12,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:12,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:12,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:12,502 INFO L124 PetriNetUnfolderBase]: 551/1168 cut-off events. [2023-08-26 10:59:12,502 INFO L125 PetriNetUnfolderBase]: For 31381/31381 co-relation queries the response was YES. [2023-08-26 10:59:12,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9985 conditions, 1168 events. 551/1168 cut-off events. For 31381/31381 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7207 event pairs, 40 based on Foata normal form. 4/1172 useless extension candidates. Maximal degree in co-relation 9910. Up to 359 conditions per place. [2023-08-26 10:59:12,515 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 110 selfloop transitions, 137 changer transitions 3/250 dead transitions. [2023-08-26 10:59:12,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 250 transitions, 5108 flow [2023-08-26 10:59:12,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 10:59:12,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 10:59:12,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1510 transitions. [2023-08-26 10:59:12,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4020234291799787 [2023-08-26 10:59:12,518 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1510 transitions. [2023-08-26 10:59:12,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1510 transitions. [2023-08-26 10:59:12,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:12,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1510 transitions. [2023-08-26 10:59:12,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 125.83333333333333) internal successors, (1510), 12 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:12,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 313.0) internal successors, (4069), 13 states have internal predecessors, (4069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:12,524 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 313.0) internal successors, (4069), 13 states have internal predecessors, (4069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:12,524 INFO L175 Difference]: Start difference. First operand has 168 places, 205 transitions, 4272 flow. Second operand 12 states and 1510 transitions. [2023-08-26 10:59:12,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 250 transitions, 5108 flow [2023-08-26 10:59:12,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 250 transitions, 4988 flow, removed 29 selfloop flow, removed 6 redundant places. [2023-08-26 10:59:12,625 INFO L231 Difference]: Finished difference. Result has 173 places, 209 transitions, 4662 flow [2023-08-26 10:59:12,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=4168, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4662, PETRI_PLACES=173, PETRI_TRANSITIONS=209} [2023-08-26 10:59:12,625 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 140 predicate places. [2023-08-26 10:59:12,625 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 209 transitions, 4662 flow [2023-08-26 10:59:12,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.66666666666667) internal successors, (1472), 12 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:12,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:12,626 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:12,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-26 10:59:12,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:12,832 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:12,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:12,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1754299613, now seen corresponding path program 17 times [2023-08-26 10:59:12,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:12,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771705235] [2023-08-26 10:59:12,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:12,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:12,889 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:12,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:12,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771705235] [2023-08-26 10:59:12,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771705235] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:12,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456639684] [2023-08-26 10:59:12,890 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 10:59:12,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:12,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:12,891 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:59:12,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-26 10:59:12,997 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 10:59:12,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:12,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 10:59:13,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:13,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:13,083 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:13,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456639684] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:13,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:13,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2023-08-26 10:59:13,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700320621] [2023-08-26 10:59:13,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:13,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 10:59:13,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:13,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 10:59:13,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-08-26 10:59:13,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:13,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 209 transitions, 4662 flow. Second operand has 12 states, 12 states have (on average 122.58333333333333) internal successors, (1471), 12 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:13,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:13,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:13,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:13,497 INFO L124 PetriNetUnfolderBase]: 590/1251 cut-off events. [2023-08-26 10:59:13,498 INFO L125 PetriNetUnfolderBase]: For 31956/31956 co-relation queries the response was YES. [2023-08-26 10:59:13,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11125 conditions, 1251 events. 590/1251 cut-off events. For 31956/31956 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7717 event pairs, 40 based on Foata normal form. 8/1259 useless extension candidates. Maximal degree in co-relation 11051. Up to 485 conditions per place. [2023-08-26 10:59:13,513 INFO L140 encePairwiseOnDemand]: 307/313 looper letters, 130 selfloop transitions, 133 changer transitions 0/263 dead transitions. [2023-08-26 10:59:13,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 263 transitions, 5829 flow [2023-08-26 10:59:13,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 10:59:13,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 10:59:13,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1626 transitions. [2023-08-26 10:59:13,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39960678299336444 [2023-08-26 10:59:13,516 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1626 transitions. [2023-08-26 10:59:13,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1626 transitions. [2023-08-26 10:59:13,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:13,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1626 transitions. [2023-08-26 10:59:13,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 125.07692307692308) internal successors, (1626), 13 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:13,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 313.0) internal successors, (4382), 14 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:13,523 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 313.0) internal successors, (4382), 14 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:13,523 INFO L175 Difference]: Start difference. First operand has 173 places, 209 transitions, 4662 flow. Second operand 13 states and 1626 transitions. [2023-08-26 10:59:13,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 263 transitions, 5829 flow [2023-08-26 10:59:13,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 263 transitions, 5604 flow, removed 20 selfloop flow, removed 6 redundant places. [2023-08-26 10:59:13,655 INFO L231 Difference]: Finished difference. Result has 187 places, 232 transitions, 5509 flow [2023-08-26 10:59:13,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=4429, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5509, PETRI_PLACES=187, PETRI_TRANSITIONS=232} [2023-08-26 10:59:13,656 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 154 predicate places. [2023-08-26 10:59:13,656 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 232 transitions, 5509 flow [2023-08-26 10:59:13,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.58333333333333) internal successors, (1471), 12 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:13,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:13,657 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:13,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-26 10:59:13,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:13,865 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:13,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:13,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1878841255, now seen corresponding path program 18 times [2023-08-26 10:59:13,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:13,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939398165] [2023-08-26 10:59:13,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:13,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:13,921 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:13,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:13,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939398165] [2023-08-26 10:59:13,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939398165] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:13,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54282849] [2023-08-26 10:59:13,922 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 10:59:13,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:13,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:13,923 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:59:13,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-26 10:59:14,041 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 10:59:14,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:14,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 10:59:14,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:14,058 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:59:14,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:14,144 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:14,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54282849] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:14,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:14,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 7] total 11 [2023-08-26 10:59:14,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895869611] [2023-08-26 10:59:14,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:14,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 10:59:14,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:14,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 10:59:14,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-08-26 10:59:14,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:14,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 232 transitions, 5509 flow. Second operand has 12 states, 12 states have (on average 122.66666666666667) internal successors, (1472), 12 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:14,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:14,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:14,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:14,571 INFO L124 PetriNetUnfolderBase]: 562/1183 cut-off events. [2023-08-26 10:59:14,571 INFO L125 PetriNetUnfolderBase]: For 31421/31421 co-relation queries the response was YES. [2023-08-26 10:59:14,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11202 conditions, 1183 events. 562/1183 cut-off events. For 31421/31421 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7166 event pairs, 40 based on Foata normal form. 20/1203 useless extension candidates. Maximal degree in co-relation 11122. Up to 471 conditions per place. [2023-08-26 10:59:14,583 INFO L140 encePairwiseOnDemand]: 307/313 looper letters, 143 selfloop transitions, 116 changer transitions 1/260 dead transitions. [2023-08-26 10:59:14,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 260 transitions, 6031 flow [2023-08-26 10:59:14,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 10:59:14,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 10:59:14,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1507 transitions. [2023-08-26 10:59:14,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40122470713525027 [2023-08-26 10:59:14,585 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1507 transitions. [2023-08-26 10:59:14,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1507 transitions. [2023-08-26 10:59:14,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:14,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1507 transitions. [2023-08-26 10:59:14,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 125.58333333333333) internal successors, (1507), 12 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:14,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 313.0) internal successors, (4069), 13 states have internal predecessors, (4069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:14,592 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 313.0) internal successors, (4069), 13 states have internal predecessors, (4069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:14,592 INFO L175 Difference]: Start difference. First operand has 187 places, 232 transitions, 5509 flow. Second operand 12 states and 1507 transitions. [2023-08-26 10:59:14,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 260 transitions, 6031 flow [2023-08-26 10:59:14,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 260 transitions, 5853 flow, removed 79 selfloop flow, removed 3 redundant places. [2023-08-26 10:59:14,724 INFO L231 Difference]: Finished difference. Result has 195 places, 224 transitions, 5364 flow [2023-08-26 10:59:14,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=5152, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5364, PETRI_PLACES=195, PETRI_TRANSITIONS=224} [2023-08-26 10:59:14,725 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 162 predicate places. [2023-08-26 10:59:14,725 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 224 transitions, 5364 flow [2023-08-26 10:59:14,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.66666666666667) internal successors, (1472), 12 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:14,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:14,726 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:14,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-26 10:59:14,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-26 10:59:14,931 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:14,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:14,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1607203974, now seen corresponding path program 19 times [2023-08-26 10:59:14,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:14,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015143021] [2023-08-26 10:59:14,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:14,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:15,000 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:15,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:15,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015143021] [2023-08-26 10:59:15,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015143021] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:15,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004137663] [2023-08-26 10:59:15,001 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 10:59:15,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:15,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:15,002 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:59:15,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-26 10:59:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:15,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 10:59:15,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:15,113 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:59:15,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:15,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004137663] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:15,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:15,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 7] total 11 [2023-08-26 10:59:15,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659114452] [2023-08-26 10:59:15,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:15,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 10:59:15,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:15,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 10:59:15,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-08-26 10:59:15,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:15,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 224 transitions, 5364 flow. Second operand has 12 states, 12 states have (on average 122.66666666666667) internal successors, (1472), 12 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:15,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:15,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:15,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:15,580 INFO L124 PetriNetUnfolderBase]: 611/1289 cut-off events. [2023-08-26 10:59:15,580 INFO L125 PetriNetUnfolderBase]: For 40196/40196 co-relation queries the response was YES. [2023-08-26 10:59:15,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12648 conditions, 1289 events. 611/1289 cut-off events. For 40196/40196 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7999 event pairs, 32 based on Foata normal form. 18/1307 useless extension candidates. Maximal degree in co-relation 12569. Up to 324 conditions per place. [2023-08-26 10:59:15,596 INFO L140 encePairwiseOnDemand]: 307/313 looper letters, 165 selfloop transitions, 132 changer transitions 11/308 dead transitions. [2023-08-26 10:59:15,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 308 transitions, 7375 flow [2023-08-26 10:59:15,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 10:59:15,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 10:59:15,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1885 transitions. [2023-08-26 10:59:15,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014909478168264 [2023-08-26 10:59:15,599 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1885 transitions. [2023-08-26 10:59:15,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1885 transitions. [2023-08-26 10:59:15,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:15,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1885 transitions. [2023-08-26 10:59:15,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 125.66666666666667) internal successors, (1885), 15 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:15,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 313.0) internal successors, (5008), 16 states have internal predecessors, (5008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:15,606 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 313.0) internal successors, (5008), 16 states have internal predecessors, (5008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:15,606 INFO L175 Difference]: Start difference. First operand has 195 places, 224 transitions, 5364 flow. Second operand 15 states and 1885 transitions. [2023-08-26 10:59:15,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 308 transitions, 7375 flow [2023-08-26 10:59:15,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 308 transitions, 7247 flow, removed 52 selfloop flow, removed 4 redundant places. [2023-08-26 10:59:15,740 INFO L231 Difference]: Finished difference. Result has 211 places, 248 transitions, 6464 flow [2023-08-26 10:59:15,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=5268, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6464, PETRI_PLACES=211, PETRI_TRANSITIONS=248} [2023-08-26 10:59:15,740 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 178 predicate places. [2023-08-26 10:59:15,740 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 248 transitions, 6464 flow [2023-08-26 10:59:15,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.66666666666667) internal successors, (1472), 12 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:15,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:15,741 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:15,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-26 10:59:15,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-26 10:59:15,946 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:15,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:15,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1951011127, now seen corresponding path program 20 times [2023-08-26 10:59:15,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:15,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856532351] [2023-08-26 10:59:15,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:15,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:16,038 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:16,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:16,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856532351] [2023-08-26 10:59:16,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856532351] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:16,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797712067] [2023-08-26 10:59:16,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:59:16,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:16,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:16,041 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:59:16,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-26 10:59:16,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:59:16,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:16,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 10:59:16,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:16,172 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:16,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:16,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:16,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797712067] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:16,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:16,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2023-08-26 10:59:16,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991326505] [2023-08-26 10:59:16,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:16,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 10:59:16,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:16,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 10:59:16,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-08-26 10:59:16,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:16,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 248 transitions, 6464 flow. Second operand has 12 states, 12 states have (on average 122.58333333333333) internal successors, (1471), 12 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:16,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:16,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:16,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:16,570 INFO L124 PetriNetUnfolderBase]: 570/1172 cut-off events. [2023-08-26 10:59:16,571 INFO L125 PetriNetUnfolderBase]: For 38642/38642 co-relation queries the response was YES. [2023-08-26 10:59:16,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12404 conditions, 1172 events. 570/1172 cut-off events. For 38642/38642 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6863 event pairs, 44 based on Foata normal form. 16/1188 useless extension candidates. Maximal degree in co-relation 12320. Up to 528 conditions per place. [2023-08-26 10:59:16,582 INFO L140 encePairwiseOnDemand]: 307/313 looper letters, 151 selfloop transitions, 111 changer transitions 6/268 dead transitions. [2023-08-26 10:59:16,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 268 transitions, 7017 flow [2023-08-26 10:59:16,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 10:59:16,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 10:59:16,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1376 transitions. [2023-08-26 10:59:16,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3996514667441185 [2023-08-26 10:59:16,591 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1376 transitions. [2023-08-26 10:59:16,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1376 transitions. [2023-08-26 10:59:16,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:16,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1376 transitions. [2023-08-26 10:59:16,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 125.0909090909091) internal successors, (1376), 11 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:16,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 313.0) internal successors, (3756), 12 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:16,595 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 313.0) internal successors, (3756), 12 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:16,595 INFO L175 Difference]: Start difference. First operand has 211 places, 248 transitions, 6464 flow. Second operand 11 states and 1376 transitions. [2023-08-26 10:59:16,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 268 transitions, 7017 flow [2023-08-26 10:59:16,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 268 transitions, 6633 flow, removed 175 selfloop flow, removed 3 redundant places. [2023-08-26 10:59:16,772 INFO L231 Difference]: Finished difference. Result has 218 places, 236 transitions, 6012 flow [2023-08-26 10:59:16,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=5948, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6012, PETRI_PLACES=218, PETRI_TRANSITIONS=236} [2023-08-26 10:59:16,772 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 185 predicate places. [2023-08-26 10:59:16,772 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 236 transitions, 6012 flow [2023-08-26 10:59:16,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.58333333333333) internal successors, (1471), 12 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:16,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:16,773 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:16,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-26 10:59:16,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:16,979 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:16,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:16,979 INFO L85 PathProgramCache]: Analyzing trace with hash -595797548, now seen corresponding path program 21 times [2023-08-26 10:59:16,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:16,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157951112] [2023-08-26 10:59:16,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:16,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:16,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:17,037 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:17,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:17,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157951112] [2023-08-26 10:59:17,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157951112] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:17,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968423202] [2023-08-26 10:59:17,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:59:17,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:17,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:17,039 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:59:17,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-26 10:59:17,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 10:59:17,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:17,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-26 10:59:17,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:17,210 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:59:17,210 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 10:59:17,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968423202] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:59:17,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 10:59:17,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2023-08-26 10:59:17,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570310374] [2023-08-26 10:59:17,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:59:17,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:59:17,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:17,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:59:17,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-26 10:59:17,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:17,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 236 transitions, 6012 flow. Second operand has 6 states, 6 states have (on average 122.5) internal successors, (735), 6 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:17,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:17,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:17,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:17,525 INFO L124 PetriNetUnfolderBase]: 590/1212 cut-off events. [2023-08-26 10:59:17,525 INFO L125 PetriNetUnfolderBase]: For 37367/37367 co-relation queries the response was YES. [2023-08-26 10:59:17,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12371 conditions, 1212 events. 590/1212 cut-off events. For 37367/37367 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7218 event pairs, 47 based on Foata normal form. 26/1238 useless extension candidates. Maximal degree in co-relation 12288. Up to 534 conditions per place. [2023-08-26 10:59:17,538 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 60 selfloop transitions, 10 changer transitions 207/277 dead transitions. [2023-08-26 10:59:17,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 277 transitions, 7308 flow [2023-08-26 10:59:17,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:59:17,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:59:17,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 758 transitions. [2023-08-26 10:59:17,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036208732694356 [2023-08-26 10:59:17,540 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 758 transitions. [2023-08-26 10:59:17,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 758 transitions. [2023-08-26 10:59:17,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:17,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 758 transitions. [2023-08-26 10:59:17,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.33333333333333) internal successors, (758), 6 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:17,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:17,543 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:17,543 INFO L175 Difference]: Start difference. First operand has 218 places, 236 transitions, 6012 flow. Second operand 6 states and 758 transitions. [2023-08-26 10:59:17,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 277 transitions, 7308 flow [2023-08-26 10:59:17,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 277 transitions, 7036 flow, removed 12 selfloop flow, removed 9 redundant places. [2023-08-26 10:59:17,664 INFO L231 Difference]: Finished difference. Result has 217 places, 63 transitions, 1456 flow [2023-08-26 10:59:17,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=5751, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1456, PETRI_PLACES=217, PETRI_TRANSITIONS=63} [2023-08-26 10:59:17,665 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 184 predicate places. [2023-08-26 10:59:17,665 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 63 transitions, 1456 flow [2023-08-26 10:59:17,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.5) internal successors, (735), 6 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:17,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:17,666 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:17,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-26 10:59:17,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:17,866 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:17,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:17,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1847331943, now seen corresponding path program 22 times [2023-08-26 10:59:17,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:17,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687067258] [2023-08-26 10:59:17,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:17,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:17,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:17,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687067258] [2023-08-26 10:59:17,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687067258] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:17,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633366723] [2023-08-26 10:59:17,928 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 10:59:17,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:17,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:17,929 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:59:17,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-26 10:59:18,040 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 10:59:18,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:18,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 10:59:18,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:18,058 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:18,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:18,126 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:18,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633366723] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:18,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:18,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 7] total 11 [2023-08-26 10:59:18,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161785209] [2023-08-26 10:59:18,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:18,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 10:59:18,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:18,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 10:59:18,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2023-08-26 10:59:18,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:18,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 63 transitions, 1456 flow. Second operand has 12 states, 12 states have (on average 122.66666666666667) internal successors, (1472), 12 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:18,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:18,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:18,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:18,254 INFO L124 PetriNetUnfolderBase]: 110/263 cut-off events. [2023-08-26 10:59:18,254 INFO L125 PetriNetUnfolderBase]: For 10260/10260 co-relation queries the response was YES. [2023-08-26 10:59:18,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2669 conditions, 263 events. 110/263 cut-off events. For 10260/10260 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1027 event pairs, 16 based on Foata normal form. 4/267 useless extension candidates. Maximal degree in co-relation 2583. Up to 128 conditions per place. [2023-08-26 10:59:18,257 INFO L140 encePairwiseOnDemand]: 307/313 looper letters, 49 selfloop transitions, 25 changer transitions 2/76 dead transitions. [2023-08-26 10:59:18,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 76 transitions, 1618 flow [2023-08-26 10:59:18,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 10:59:18,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 10:59:18,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1243 transitions. [2023-08-26 10:59:18,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39712460063897764 [2023-08-26 10:59:18,266 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1243 transitions. [2023-08-26 10:59:18,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1243 transitions. [2023-08-26 10:59:18,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:18,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1243 transitions. [2023-08-26 10:59:18,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 124.3) internal successors, (1243), 10 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:18,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 313.0) internal successors, (3443), 11 states have internal predecessors, (3443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:18,270 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 313.0) internal successors, (3443), 11 states have internal predecessors, (3443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:18,271 INFO L175 Difference]: Start difference. First operand has 217 places, 63 transitions, 1456 flow. Second operand 10 states and 1243 transitions. [2023-08-26 10:59:18,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 76 transitions, 1618 flow [2023-08-26 10:59:18,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 76 transitions, 1055 flow, removed 88 selfloop flow, removed 75 redundant places. [2023-08-26 10:59:18,298 INFO L231 Difference]: Finished difference. Result has 130 places, 58 transitions, 853 flow [2023-08-26 10:59:18,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=853, PETRI_PLACES=130, PETRI_TRANSITIONS=58} [2023-08-26 10:59:18,299 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 97 predicate places. [2023-08-26 10:59:18,299 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 58 transitions, 853 flow [2023-08-26 10:59:18,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.66666666666667) internal successors, (1472), 12 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:18,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:18,299 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:18,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-26 10:59:18,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-26 10:59:18,505 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:18,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:18,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1264047538, now seen corresponding path program 23 times [2023-08-26 10:59:18,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:18,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585125947] [2023-08-26 10:59:18,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:18,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:18,562 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:18,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:18,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585125947] [2023-08-26 10:59:18,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585125947] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:18,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035188295] [2023-08-26 10:59:18,563 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 10:59:18,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:18,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:18,564 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:59:18,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-26 10:59:18,667 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-26 10:59:18,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:18,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 10:59:18,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:18,682 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:18,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:18,742 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:18,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035188295] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:18,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:18,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2023-08-26 10:59:18,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700870036] [2023-08-26 10:59:18,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:18,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 10:59:18,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:18,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 10:59:18,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-08-26 10:59:18,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:18,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 58 transitions, 853 flow. Second operand has 12 states, 12 states have (on average 122.58333333333333) internal successors, (1471), 12 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:18,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:18,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:18,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:18,907 INFO L124 PetriNetUnfolderBase]: 104/247 cut-off events. [2023-08-26 10:59:18,907 INFO L125 PetriNetUnfolderBase]: For 2715/2715 co-relation queries the response was YES. [2023-08-26 10:59:18,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1808 conditions, 247 events. 104/247 cut-off events. For 2715/2715 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 934 event pairs, 2 based on Foata normal form. 4/251 useless extension candidates. Maximal degree in co-relation 1763. Up to 116 conditions per place. [2023-08-26 10:59:18,909 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 71 selfloop transitions, 19 changer transitions 1/91 dead transitions. [2023-08-26 10:59:18,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 91 transitions, 1143 flow [2023-08-26 10:59:18,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 10:59:18,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 10:59:18,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1503 transitions. [2023-08-26 10:59:18,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4001597444089457 [2023-08-26 10:59:18,911 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1503 transitions. [2023-08-26 10:59:18,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1503 transitions. [2023-08-26 10:59:18,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:18,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1503 transitions. [2023-08-26 10:59:18,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 125.25) internal successors, (1503), 12 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:18,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 313.0) internal successors, (4069), 13 states have internal predecessors, (4069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:18,916 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 313.0) internal successors, (4069), 13 states have internal predecessors, (4069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:18,916 INFO L175 Difference]: Start difference. First operand has 130 places, 58 transitions, 853 flow. Second operand 12 states and 1503 transitions. [2023-08-26 10:59:18,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 91 transitions, 1143 flow [2023-08-26 10:59:18,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 91 transitions, 1060 flow, removed 11 selfloop flow, removed 13 redundant places. [2023-08-26 10:59:18,926 INFO L231 Difference]: Finished difference. Result has 123 places, 56 transitions, 780 flow [2023-08-26 10:59:18,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=780, PETRI_PLACES=123, PETRI_TRANSITIONS=56} [2023-08-26 10:59:18,927 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 90 predicate places. [2023-08-26 10:59:18,927 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 56 transitions, 780 flow [2023-08-26 10:59:18,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.58333333333333) internal successors, (1471), 12 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:18,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:18,927 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:18,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-26 10:59:19,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-26 10:59:19,133 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:19,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:19,133 INFO L85 PathProgramCache]: Analyzing trace with hash 775318276, now seen corresponding path program 24 times [2023-08-26 10:59:19,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:19,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919942359] [2023-08-26 10:59:19,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:19,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:19,192 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:19,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:19,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919942359] [2023-08-26 10:59:19,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919942359] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:19,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787614329] [2023-08-26 10:59:19,192 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 10:59:19,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:19,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:19,194 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:59:19,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-26 10:59:19,321 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 10:59:19,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:19,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 10:59:19,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:19,343 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:19,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:19,390 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:19,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787614329] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:19,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:19,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-26 10:59:19,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696433039] [2023-08-26 10:59:19,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:19,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 10:59:19,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:19,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 10:59:19,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2023-08-26 10:59:19,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:19,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 56 transitions, 780 flow. Second operand has 12 states, 12 states have (on average 122.5) internal successors, (1470), 12 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:19,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:19,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:19,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:19,489 INFO L124 PetriNetUnfolderBase]: 112/269 cut-off events. [2023-08-26 10:59:19,489 INFO L125 PetriNetUnfolderBase]: For 2969/2969 co-relation queries the response was YES. [2023-08-26 10:59:19,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1982 conditions, 269 events. 112/269 cut-off events. For 2969/2969 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1067 event pairs, 30 based on Foata normal form. 2/271 useless extension candidates. Maximal degree in co-relation 1941. Up to 151 conditions per place. [2023-08-26 10:59:19,490 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 58 selfloop transitions, 13 changer transitions 7/78 dead transitions. [2023-08-26 10:59:19,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 78 transitions, 1125 flow [2023-08-26 10:59:19,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 10:59:19,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 10:59:19,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1246 transitions. [2023-08-26 10:59:19,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39808306709265173 [2023-08-26 10:59:19,492 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1246 transitions. [2023-08-26 10:59:19,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1246 transitions. [2023-08-26 10:59:19,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:19,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1246 transitions. [2023-08-26 10:59:19,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 124.6) internal successors, (1246), 10 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:19,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 313.0) internal successors, (3443), 11 states have internal predecessors, (3443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:19,495 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 313.0) internal successors, (3443), 11 states have internal predecessors, (3443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:19,495 INFO L175 Difference]: Start difference. First operand has 123 places, 56 transitions, 780 flow. Second operand 10 states and 1246 transitions. [2023-08-26 10:59:19,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 78 transitions, 1125 flow [2023-08-26 10:59:19,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 78 transitions, 1050 flow, removed 2 selfloop flow, removed 12 redundant places. [2023-08-26 10:59:19,501 INFO L231 Difference]: Finished difference. Result has 123 places, 55 transitions, 755 flow [2023-08-26 10:59:19,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=755, PETRI_PLACES=123, PETRI_TRANSITIONS=55} [2023-08-26 10:59:19,502 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 90 predicate places. [2023-08-26 10:59:19,502 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 55 transitions, 755 flow [2023-08-26 10:59:19,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.5) internal successors, (1470), 12 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:19,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:19,503 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:19,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-08-26 10:59:19,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-26 10:59:19,704 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:19,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:19,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1638713286, now seen corresponding path program 25 times [2023-08-26 10:59:19,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:19,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363764571] [2023-08-26 10:59:19,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:19,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:19,753 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:19,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:19,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363764571] [2023-08-26 10:59:19,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363764571] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:19,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364062975] [2023-08-26 10:59:19,754 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 10:59:19,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:19,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:19,755 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:59:19,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-26 10:59:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:19,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 10:59:19,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:19,887 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:19,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:19,958 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:19,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364062975] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:19,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:19,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 7] total 11 [2023-08-26 10:59:19,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213470528] [2023-08-26 10:59:19,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:19,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 10:59:19,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:19,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 10:59:19,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-08-26 10:59:19,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:19,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 55 transitions, 755 flow. Second operand has 12 states, 12 states have (on average 122.66666666666667) internal successors, (1472), 12 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:19,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:19,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:19,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:20,094 INFO L124 PetriNetUnfolderBase]: 117/280 cut-off events. [2023-08-26 10:59:20,095 INFO L125 PetriNetUnfolderBase]: For 2984/2984 co-relation queries the response was YES. [2023-08-26 10:59:20,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1969 conditions, 280 events. 117/280 cut-off events. For 2984/2984 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1120 event pairs, 2 based on Foata normal form. 4/284 useless extension candidates. Maximal degree in co-relation 1925. Up to 82 conditions per place. [2023-08-26 10:59:20,096 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 70 selfloop transitions, 28 changer transitions 1/99 dead transitions. [2023-08-26 10:59:20,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 99 transitions, 1160 flow [2023-08-26 10:59:20,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 10:59:20,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 10:59:20,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1631 transitions. [2023-08-26 10:59:20,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40083558613910053 [2023-08-26 10:59:20,099 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1631 transitions. [2023-08-26 10:59:20,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1631 transitions. [2023-08-26 10:59:20,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:20,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1631 transitions. [2023-08-26 10:59:20,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 125.46153846153847) internal successors, (1631), 13 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:20,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 313.0) internal successors, (4382), 14 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:20,103 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 313.0) internal successors, (4382), 14 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:20,103 INFO L175 Difference]: Start difference. First operand has 123 places, 55 transitions, 755 flow. Second operand 13 states and 1631 transitions. [2023-08-26 10:59:20,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 99 transitions, 1160 flow [2023-08-26 10:59:20,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 99 transitions, 1130 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-26 10:59:20,110 INFO L231 Difference]: Finished difference. Result has 130 places, 59 transitions, 843 flow [2023-08-26 10:59:20,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=843, PETRI_PLACES=130, PETRI_TRANSITIONS=59} [2023-08-26 10:59:20,111 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 97 predicate places. [2023-08-26 10:59:20,111 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 59 transitions, 843 flow [2023-08-26 10:59:20,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.66666666666667) internal successors, (1472), 12 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:20,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:20,111 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:20,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-26 10:59:20,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:20,317 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:20,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:20,317 INFO L85 PathProgramCache]: Analyzing trace with hash 739881737, now seen corresponding path program 26 times [2023-08-26 10:59:20,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:20,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137974982] [2023-08-26 10:59:20,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:20,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:20,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:20,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:20,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137974982] [2023-08-26 10:59:20,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137974982] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:20,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111228155] [2023-08-26 10:59:20,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:59:20,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:20,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:20,513 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:59:20,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-26 10:59:20,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:59:20,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:20,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-26 10:59:20,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:20,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:20,709 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:20,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111228155] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:20,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:20,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2023-08-26 10:59:20,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251507182] [2023-08-26 10:59:20,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:20,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 10:59:20,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:20,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 10:59:20,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-08-26 10:59:20,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 313 [2023-08-26 10:59:20,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 59 transitions, 843 flow. Second operand has 13 states, 13 states have (on average 111.46153846153847) internal successors, (1449), 13 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:20,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:20,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 313 [2023-08-26 10:59:20,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:20,879 INFO L124 PetriNetUnfolderBase]: 146/340 cut-off events. [2023-08-26 10:59:20,879 INFO L125 PetriNetUnfolderBase]: For 3540/3540 co-relation queries the response was YES. [2023-08-26 10:59:20,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2474 conditions, 340 events. 146/340 cut-off events. For 3540/3540 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1454 event pairs, 28 based on Foata normal form. 1/341 useless extension candidates. Maximal degree in co-relation 2429. Up to 232 conditions per place. [2023-08-26 10:59:20,882 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 85 selfloop transitions, 14 changer transitions 3/102 dead transitions. [2023-08-26 10:59:20,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 102 transitions, 1277 flow [2023-08-26 10:59:20,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 10:59:20,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 10:59:20,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1265 transitions. [2023-08-26 10:59:20,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36741214057507987 [2023-08-26 10:59:20,884 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1265 transitions. [2023-08-26 10:59:20,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1265 transitions. [2023-08-26 10:59:20,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:20,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1265 transitions. [2023-08-26 10:59:20,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 115.0) internal successors, (1265), 11 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:20,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 313.0) internal successors, (3756), 12 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:20,888 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 313.0) internal successors, (3756), 12 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:20,888 INFO L175 Difference]: Start difference. First operand has 130 places, 59 transitions, 843 flow. Second operand 11 states and 1265 transitions. [2023-08-26 10:59:20,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 102 transitions, 1277 flow [2023-08-26 10:59:20,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 102 transitions, 1229 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-08-26 10:59:20,900 INFO L231 Difference]: Finished difference. Result has 136 places, 65 transitions, 923 flow [2023-08-26 10:59:20,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=923, PETRI_PLACES=136, PETRI_TRANSITIONS=65} [2023-08-26 10:59:20,900 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 103 predicate places. [2023-08-26 10:59:20,900 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 65 transitions, 923 flow [2023-08-26 10:59:20,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 111.46153846153847) internal successors, (1449), 13 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:20,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:20,901 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:20,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-26 10:59:21,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:21,107 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:21,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:21,107 INFO L85 PathProgramCache]: Analyzing trace with hash 257853321, now seen corresponding path program 27 times [2023-08-26 10:59:21,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:21,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318562350] [2023-08-26 10:59:21,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:21,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:21,243 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:21,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:21,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318562350] [2023-08-26 10:59:21,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318562350] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:21,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235196897] [2023-08-26 10:59:21,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:59:21,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:21,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:21,245 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:59:21,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-26 10:59:21,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 10:59:21,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:21,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-26 10:59:21,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:21,422 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:59:21,422 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 10:59:21,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235196897] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:59:21,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 10:59:21,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2023-08-26 10:59:21,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852875587] [2023-08-26 10:59:21,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:59:21,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:59:21,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:21,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:59:21,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-08-26 10:59:21,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:21,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 65 transitions, 923 flow. Second operand has 6 states, 6 states have (on average 122.5) internal successors, (735), 6 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:21,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:21,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:21,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:21,499 INFO L124 PetriNetUnfolderBase]: 142/335 cut-off events. [2023-08-26 10:59:21,499 INFO L125 PetriNetUnfolderBase]: For 3283/3283 co-relation queries the response was YES. [2023-08-26 10:59:21,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2400 conditions, 335 events. 142/335 cut-off events. For 3283/3283 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1430 event pairs, 32 based on Foata normal form. 1/336 useless extension candidates. Maximal degree in co-relation 2355. Up to 177 conditions per place. [2023-08-26 10:59:21,502 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 54 selfloop transitions, 11 changer transitions 11/76 dead transitions. [2023-08-26 10:59:21,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 76 transitions, 1121 flow [2023-08-26 10:59:21,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:59:21,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:59:21,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 751 transitions. [2023-08-26 10:59:21,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39989350372736954 [2023-08-26 10:59:21,504 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 751 transitions. [2023-08-26 10:59:21,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 751 transitions. [2023-08-26 10:59:21,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:21,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 751 transitions. [2023-08-26 10:59:21,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.16666666666667) internal successors, (751), 6 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:21,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:21,506 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:21,506 INFO L175 Difference]: Start difference. First operand has 136 places, 65 transitions, 923 flow. Second operand 6 states and 751 transitions. [2023-08-26 10:59:21,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 76 transitions, 1121 flow [2023-08-26 10:59:21,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 76 transitions, 1081 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-08-26 10:59:21,518 INFO L231 Difference]: Finished difference. Result has 140 places, 59 transitions, 848 flow [2023-08-26 10:59:21,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=848, PETRI_PLACES=140, PETRI_TRANSITIONS=59} [2023-08-26 10:59:21,519 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 107 predicate places. [2023-08-26 10:59:21,519 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 59 transitions, 848 flow [2023-08-26 10:59:21,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.5) internal successors, (735), 6 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:21,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:21,519 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:21,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-08-26 10:59:21,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:21,725 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:21,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:21,725 INFO L85 PathProgramCache]: Analyzing trace with hash 2138789055, now seen corresponding path program 28 times [2023-08-26 10:59:21,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:21,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033391612] [2023-08-26 10:59:21,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:21,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:21,861 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:59:21,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:21,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033391612] [2023-08-26 10:59:21,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033391612] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:21,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620712226] [2023-08-26 10:59:21,861 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 10:59:21,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:21,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:21,865 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:59:21,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-26 10:59:21,980 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 10:59:21,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:21,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-26 10:59:21,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:22,018 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:59:22,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:22,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:59:22,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620712226] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:22,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:22,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2023-08-26 10:59:22,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873904944] [2023-08-26 10:59:22,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:22,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 10:59:22,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:22,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 10:59:22,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-08-26 10:59:22,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:22,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 59 transitions, 848 flow. Second operand has 12 states, 12 states have (on average 122.0) internal successors, (1464), 12 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:22,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:22,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:22,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:22,185 INFO L124 PetriNetUnfolderBase]: 178/421 cut-off events. [2023-08-26 10:59:22,185 INFO L125 PetriNetUnfolderBase]: For 4967/4967 co-relation queries the response was YES. [2023-08-26 10:59:22,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3185 conditions, 421 events. 178/421 cut-off events. For 4967/4967 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1922 event pairs, 54 based on Foata normal form. 1/422 useless extension candidates. Maximal degree in co-relation 3138. Up to 287 conditions per place. [2023-08-26 10:59:22,188 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 80 selfloop transitions, 24 changer transitions 3/107 dead transitions. [2023-08-26 10:59:22,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 107 transitions, 1554 flow [2023-08-26 10:59:22,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 10:59:22,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 10:59:22,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1264 transitions. [2023-08-26 10:59:22,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4038338658146965 [2023-08-26 10:59:22,189 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1264 transitions. [2023-08-26 10:59:22,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1264 transitions. [2023-08-26 10:59:22,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:22,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1264 transitions. [2023-08-26 10:59:22,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 126.4) internal successors, (1264), 10 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:22,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 313.0) internal successors, (3443), 11 states have internal predecessors, (3443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:22,193 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 313.0) internal successors, (3443), 11 states have internal predecessors, (3443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:22,193 INFO L175 Difference]: Start difference. First operand has 140 places, 59 transitions, 848 flow. Second operand 10 states and 1264 transitions. [2023-08-26 10:59:22,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 107 transitions, 1554 flow [2023-08-26 10:59:22,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 107 transitions, 1417 flow, removed 20 selfloop flow, removed 13 redundant places. [2023-08-26 10:59:22,203 INFO L231 Difference]: Finished difference. Result has 134 places, 70 transitions, 998 flow [2023-08-26 10:59:22,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=998, PETRI_PLACES=134, PETRI_TRANSITIONS=70} [2023-08-26 10:59:22,204 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 101 predicate places. [2023-08-26 10:59:22,204 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 70 transitions, 998 flow [2023-08-26 10:59:22,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.0) internal successors, (1464), 12 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:22,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:22,204 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:22,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-08-26 10:59:22,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-08-26 10:59:22,405 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:22,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:22,405 INFO L85 PathProgramCache]: Analyzing trace with hash 740326473, now seen corresponding path program 29 times [2023-08-26 10:59:22,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:22,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076174705] [2023-08-26 10:59:22,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:22,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:22,526 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:22,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:22,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076174705] [2023-08-26 10:59:22,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076174705] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:22,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951805195] [2023-08-26 10:59:22,526 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 10:59:22,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:22,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:22,529 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:59:22,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-26 10:59:22,650 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-26 10:59:22,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:22,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-26 10:59:22,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:22,696 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:59:22,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:59:22,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951805195] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:22,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:22,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2023-08-26 10:59:22,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144998901] [2023-08-26 10:59:22,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:22,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 10:59:22,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:22,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 10:59:22,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-26 10:59:22,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:22,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 70 transitions, 998 flow. Second operand has 7 states, 7 states have (on average 122.71428571428571) internal successors, (859), 7 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:22,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:22,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:22,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:22,896 INFO L124 PetriNetUnfolderBase]: 202/480 cut-off events. [2023-08-26 10:59:22,896 INFO L125 PetriNetUnfolderBase]: For 4409/4409 co-relation queries the response was YES. [2023-08-26 10:59:22,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3670 conditions, 480 events. 202/480 cut-off events. For 4409/4409 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2324 event pairs, 32 based on Foata normal form. 1/481 useless extension candidates. Maximal degree in co-relation 3625. Up to 333 conditions per place. [2023-08-26 10:59:22,899 INFO L140 encePairwiseOnDemand]: 309/313 looper letters, 81 selfloop transitions, 21 changer transitions 2/104 dead transitions. [2023-08-26 10:59:22,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 104 transitions, 1475 flow [2023-08-26 10:59:22,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 10:59:22,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 10:59:22,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 893 transitions. [2023-08-26 10:59:22,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075764491099954 [2023-08-26 10:59:22,901 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 893 transitions. [2023-08-26 10:59:22,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 893 transitions. [2023-08-26 10:59:22,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:22,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 893 transitions. [2023-08-26 10:59:22,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 127.57142857142857) internal successors, (893), 7 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:22,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:22,903 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:22,903 INFO L175 Difference]: Start difference. First operand has 134 places, 70 transitions, 998 flow. Second operand 7 states and 893 transitions. [2023-08-26 10:59:22,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 104 transitions, 1475 flow [2023-08-26 10:59:22,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 104 transitions, 1433 flow, removed 21 selfloop flow, removed 0 redundant places. [2023-08-26 10:59:22,914 INFO L231 Difference]: Finished difference. Result has 144 places, 75 transitions, 1112 flow [2023-08-26 10:59:22,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=956, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1112, PETRI_PLACES=144, PETRI_TRANSITIONS=75} [2023-08-26 10:59:22,915 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 111 predicate places. [2023-08-26 10:59:22,915 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 75 transitions, 1112 flow [2023-08-26 10:59:22,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.71428571428571) internal successors, (859), 7 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:22,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:22,915 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:22,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-08-26 10:59:23,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:23,116 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:23,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:23,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1180106407, now seen corresponding path program 30 times [2023-08-26 10:59:23,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:23,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919316] [2023-08-26 10:59:23,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:23,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:23,231 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:23,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:23,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919316] [2023-08-26 10:59:23,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919316] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:23,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443832326] [2023-08-26 10:59:23,232 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 10:59:23,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:23,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:23,233 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:59:23,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-26 10:59:23,352 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-26 10:59:23,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:23,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-26 10:59:23,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:23,397 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:59:23,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:23,415 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:59:23,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443832326] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:23,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:23,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2023-08-26 10:59:23,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795911856] [2023-08-26 10:59:23,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:23,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 10:59:23,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:23,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 10:59:23,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-08-26 10:59:23,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:23,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 75 transitions, 1112 flow. Second operand has 12 states, 12 states have (on average 122.33333333333333) internal successors, (1468), 12 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:23,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:23,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:23,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:23,622 INFO L124 PetriNetUnfolderBase]: 230/541 cut-off events. [2023-08-26 10:59:23,622 INFO L125 PetriNetUnfolderBase]: For 5460/5460 co-relation queries the response was YES. [2023-08-26 10:59:23,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4319 conditions, 541 events. 230/541 cut-off events. For 5460/5460 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2716 event pairs, 51 based on Foata normal form. 1/542 useless extension candidates. Maximal degree in co-relation 4269. Up to 338 conditions per place. [2023-08-26 10:59:23,625 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 92 selfloop transitions, 26 changer transitions 4/122 dead transitions. [2023-08-26 10:59:23,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 122 transitions, 1731 flow [2023-08-26 10:59:23,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 10:59:23,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 10:59:23,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1268 transitions. [2023-08-26 10:59:23,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405111821086262 [2023-08-26 10:59:23,627 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1268 transitions. [2023-08-26 10:59:23,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1268 transitions. [2023-08-26 10:59:23,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:23,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1268 transitions. [2023-08-26 10:59:23,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 126.8) internal successors, (1268), 10 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:23,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 313.0) internal successors, (3443), 11 states have internal predecessors, (3443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:23,631 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 313.0) internal successors, (3443), 11 states have internal predecessors, (3443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:23,631 INFO L175 Difference]: Start difference. First operand has 144 places, 75 transitions, 1112 flow. Second operand 10 states and 1268 transitions. [2023-08-26 10:59:23,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 122 transitions, 1731 flow [2023-08-26 10:59:23,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 122 transitions, 1690 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-26 10:59:23,650 INFO L231 Difference]: Finished difference. Result has 153 places, 80 transitions, 1231 flow [2023-08-26 10:59:23,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1231, PETRI_PLACES=153, PETRI_TRANSITIONS=80} [2023-08-26 10:59:23,651 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 120 predicate places. [2023-08-26 10:59:23,651 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 80 transitions, 1231 flow [2023-08-26 10:59:23,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.33333333333333) internal successors, (1468), 12 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:23,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:23,651 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:23,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-26 10:59:23,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:23,857 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:23,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:23,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1462328154, now seen corresponding path program 31 times [2023-08-26 10:59:23,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:23,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538938575] [2023-08-26 10:59:23,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:23,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:23,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:23,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538938575] [2023-08-26 10:59:23,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538938575] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:23,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72451382] [2023-08-26 10:59:23,931 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 10:59:23,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:23,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:23,933 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:59:23,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-26 10:59:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:24,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-26 10:59:24,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:24,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:24,152 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:24,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72451382] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:24,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:24,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-08-26 10:59:24,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970196228] [2023-08-26 10:59:24,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:24,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 10:59:24,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:24,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 10:59:24,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2023-08-26 10:59:24,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:24,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 80 transitions, 1231 flow. Second operand has 15 states, 15 states have (on average 122.2) internal successors, (1833), 15 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:24,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:24,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:24,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:24,351 INFO L124 PetriNetUnfolderBase]: 201/497 cut-off events. [2023-08-26 10:59:24,352 INFO L125 PetriNetUnfolderBase]: For 5499/5499 co-relation queries the response was YES. [2023-08-26 10:59:24,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3925 conditions, 497 events. 201/497 cut-off events. For 5499/5499 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2531 event pairs, 24 based on Foata normal form. 16/513 useless extension candidates. Maximal degree in co-relation 3873. Up to 153 conditions per place. [2023-08-26 10:59:24,354 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 75 selfloop transitions, 45 changer transitions 14/134 dead transitions. [2023-08-26 10:59:24,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 134 transitions, 1860 flow [2023-08-26 10:59:24,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 10:59:24,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 10:59:24,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1876 transitions. [2023-08-26 10:59:24,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3995740149094782 [2023-08-26 10:59:24,357 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1876 transitions. [2023-08-26 10:59:24,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1876 transitions. [2023-08-26 10:59:24,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:24,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1876 transitions. [2023-08-26 10:59:24,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 125.06666666666666) internal successors, (1876), 15 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:24,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 313.0) internal successors, (5008), 16 states have internal predecessors, (5008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:24,361 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 313.0) internal successors, (5008), 16 states have internal predecessors, (5008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:24,361 INFO L175 Difference]: Start difference. First operand has 153 places, 80 transitions, 1231 flow. Second operand 15 states and 1876 transitions. [2023-08-26 10:59:24,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 134 transitions, 1860 flow [2023-08-26 10:59:24,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 134 transitions, 1793 flow, removed 23 selfloop flow, removed 4 redundant places. [2023-08-26 10:59:24,376 INFO L231 Difference]: Finished difference. Result has 163 places, 80 transitions, 1343 flow [2023-08-26 10:59:24,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1343, PETRI_PLACES=163, PETRI_TRANSITIONS=80} [2023-08-26 10:59:24,377 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 130 predicate places. [2023-08-26 10:59:24,377 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 80 transitions, 1343 flow [2023-08-26 10:59:24,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 122.2) internal successors, (1833), 15 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:24,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:24,377 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:24,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-08-26 10:59:24,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-26 10:59:24,578 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:24,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:24,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1476114970, now seen corresponding path program 32 times [2023-08-26 10:59:24,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:24,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972159392] [2023-08-26 10:59:24,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:24,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:24,646 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:24,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:24,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972159392] [2023-08-26 10:59:24,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972159392] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:24,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245601102] [2023-08-26 10:59:24,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:59:24,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:24,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:24,647 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:59:24,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-26 10:59:24,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:59:24,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:24,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-26 10:59:24,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:24,778 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:24,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:24,871 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:24,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245601102] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:24,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:24,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 14 [2023-08-26 10:59:24,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660605359] [2023-08-26 10:59:24,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:24,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 10:59:24,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:24,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 10:59:24,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2023-08-26 10:59:24,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:24,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 80 transitions, 1343 flow. Second operand has 15 states, 15 states have (on average 122.33333333333333) internal successors, (1835), 15 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:24,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:24,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:24,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:25,034 INFO L124 PetriNetUnfolderBase]: 154/373 cut-off events. [2023-08-26 10:59:25,034 INFO L125 PetriNetUnfolderBase]: For 4136/4136 co-relation queries the response was YES. [2023-08-26 10:59:25,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2992 conditions, 373 events. 154/373 cut-off events. For 4136/4136 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1665 event pairs, 30 based on Foata normal form. 8/381 useless extension candidates. Maximal degree in co-relation 2939. Up to 196 conditions per place. [2023-08-26 10:59:25,037 INFO L140 encePairwiseOnDemand]: 307/313 looper letters, 60 selfloop transitions, 32 changer transitions 2/94 dead transitions. [2023-08-26 10:59:25,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 94 transitions, 1489 flow [2023-08-26 10:59:25,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 10:59:25,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 10:59:25,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1365 transitions. [2023-08-26 10:59:25,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3964565785652048 [2023-08-26 10:59:25,039 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1365 transitions. [2023-08-26 10:59:25,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1365 transitions. [2023-08-26 10:59:25,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:25,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1365 transitions. [2023-08-26 10:59:25,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 124.0909090909091) internal successors, (1365), 11 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:25,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 313.0) internal successors, (3756), 12 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:25,044 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 313.0) internal successors, (3756), 12 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:25,044 INFO L175 Difference]: Start difference. First operand has 163 places, 80 transitions, 1343 flow. Second operand 11 states and 1365 transitions. [2023-08-26 10:59:25,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 94 transitions, 1489 flow [2023-08-26 10:59:25,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 94 transitions, 1300 flow, removed 54 selfloop flow, removed 17 redundant places. [2023-08-26 10:59:25,063 INFO L231 Difference]: Finished difference. Result has 154 places, 73 transitions, 1105 flow [2023-08-26 10:59:25,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1105, PETRI_PLACES=154, PETRI_TRANSITIONS=73} [2023-08-26 10:59:25,063 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 121 predicate places. [2023-08-26 10:59:25,063 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 73 transitions, 1105 flow [2023-08-26 10:59:25,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 122.33333333333333) internal successors, (1835), 15 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:25,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:25,064 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:25,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-26 10:59:25,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-26 10:59:25,269 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:25,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:25,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1607263177, now seen corresponding path program 33 times [2023-08-26 10:59:25,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:25,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869007823] [2023-08-26 10:59:25,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:25,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:25,330 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:25,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:25,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869007823] [2023-08-26 10:59:25,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869007823] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:25,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452468471] [2023-08-26 10:59:25,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:59:25,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:25,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:25,331 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:59:25,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-26 10:59:25,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 10:59:25,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:25,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-26 10:59:25,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-26 10:59:25,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 10:59:25,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452468471] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:59:25,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 10:59:25,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2023-08-26 10:59:25,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359836263] [2023-08-26 10:59:25,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:59:25,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:59:25,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:25,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:59:25,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-08-26 10:59:25,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:25,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 73 transitions, 1105 flow. Second operand has 6 states, 6 states have (on average 122.5) internal successors, (735), 6 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:25,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:25,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:25,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:25,592 INFO L124 PetriNetUnfolderBase]: 150/352 cut-off events. [2023-08-26 10:59:25,592 INFO L125 PetriNetUnfolderBase]: For 3896/3896 co-relation queries the response was YES. [2023-08-26 10:59:25,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2723 conditions, 352 events. 150/352 cut-off events. For 3896/3896 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1526 event pairs, 39 based on Foata normal form. 9/361 useless extension candidates. Maximal degree in co-relation 2672. Up to 123 conditions per place. [2023-08-26 10:59:25,594 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 23 selfloop transitions, 1 changer transitions 60/84 dead transitions. [2023-08-26 10:59:25,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 84 transitions, 1342 flow [2023-08-26 10:59:25,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:59:25,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:59:25,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 752 transitions. [2023-08-26 10:59:25,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40042598509052185 [2023-08-26 10:59:25,595 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 752 transitions. [2023-08-26 10:59:25,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 752 transitions. [2023-08-26 10:59:25,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:25,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 752 transitions. [2023-08-26 10:59:25,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.33333333333333) internal successors, (752), 6 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:25,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:25,598 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:25,598 INFO L175 Difference]: Start difference. First operand has 154 places, 73 transitions, 1105 flow. Second operand 6 states and 752 transitions. [2023-08-26 10:59:25,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 84 transitions, 1342 flow [2023-08-26 10:59:25,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 84 transitions, 1302 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-26 10:59:25,612 INFO L231 Difference]: Finished difference. Result has 153 places, 21 transitions, 234 flow [2023-08-26 10:59:25,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=234, PETRI_PLACES=153, PETRI_TRANSITIONS=21} [2023-08-26 10:59:25,613 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 120 predicate places. [2023-08-26 10:59:25,613 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 21 transitions, 234 flow [2023-08-26 10:59:25,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.5) internal successors, (735), 6 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:25,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:25,613 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:25,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-26 10:59:25,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-26 10:59:25,819 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:25,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:25,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1504214200, now seen corresponding path program 34 times [2023-08-26 10:59:25,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:25,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743917681] [2023-08-26 10:59:25,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:25,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:26,036 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:26,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:26,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743917681] [2023-08-26 10:59:26,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743917681] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:26,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228000332] [2023-08-26 10:59:26,036 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 10:59:26,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:26,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:26,037 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:59:26,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-26 10:59:26,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 10:59:26,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:26,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-26 10:59:26,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:26,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:26,325 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:26,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228000332] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:26,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:26,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2023-08-26 10:59:26,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127587227] [2023-08-26 10:59:26,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:26,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 10:59:26,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:26,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 10:59:26,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-08-26 10:59:26,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 313 [2023-08-26 10:59:26,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 21 transitions, 234 flow. Second operand has 17 states, 17 states have (on average 111.11764705882354) internal successors, (1889), 17 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:26,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:26,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 313 [2023-08-26 10:59:26,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:26,594 INFO L124 PetriNetUnfolderBase]: 69/158 cut-off events. [2023-08-26 10:59:26,594 INFO L125 PetriNetUnfolderBase]: For 1575/1575 co-relation queries the response was YES. [2023-08-26 10:59:26,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1122 conditions, 158 events. 69/158 cut-off events. For 1575/1575 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 454 event pairs, 2 based on Foata normal form. 2/160 useless extension candidates. Maximal degree in co-relation 1071. Up to 33 conditions per place. [2023-08-26 10:59:26,595 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 53 selfloop transitions, 16 changer transitions 7/76 dead transitions. [2023-08-26 10:59:26,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 76 transitions, 673 flow [2023-08-26 10:59:26,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 10:59:26,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 10:59:26,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1495 transitions. [2023-08-26 10:59:26,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36741214057507987 [2023-08-26 10:59:26,597 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1495 transitions. [2023-08-26 10:59:26,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1495 transitions. [2023-08-26 10:59:26,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:26,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1495 transitions. [2023-08-26 10:59:26,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.0) internal successors, (1495), 13 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:26,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 313.0) internal successors, (4382), 14 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:26,602 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 313.0) internal successors, (4382), 14 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:26,602 INFO L175 Difference]: Start difference. First operand has 153 places, 21 transitions, 234 flow. Second operand 13 states and 1495 transitions. [2023-08-26 10:59:26,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 76 transitions, 673 flow [2023-08-26 10:59:26,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 479 flow, removed 29 selfloop flow, removed 51 redundant places. [2023-08-26 10:59:26,606 INFO L231 Difference]: Finished difference. Result has 77 places, 28 transitions, 211 flow [2023-08-26 10:59:26,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=211, PETRI_PLACES=77, PETRI_TRANSITIONS=28} [2023-08-26 10:59:26,606 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 44 predicate places. [2023-08-26 10:59:26,606 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 28 transitions, 211 flow [2023-08-26 10:59:26,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 111.11764705882354) internal successors, (1889), 17 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:26,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:26,607 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:26,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-08-26 10:59:26,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-26 10:59:26,813 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:26,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:26,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1450169671, now seen corresponding path program 35 times [2023-08-26 10:59:26,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:26,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41386577] [2023-08-26 10:59:26,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:26,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:26,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:26,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41386577] [2023-08-26 10:59:26,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41386577] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:26,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30532779] [2023-08-26 10:59:26,923 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 10:59:26,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:26,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:26,924 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:59:26,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-26 10:59:27,057 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-26 10:59:27,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:27,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-26 10:59:27,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:27,084 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:27,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:27,172 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:27,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30532779] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:27,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:27,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2023-08-26 10:59:27,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505665649] [2023-08-26 10:59:27,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:27,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-26 10:59:27,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:27,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-26 10:59:27,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2023-08-26 10:59:27,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:27,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 28 transitions, 211 flow. Second operand has 18 states, 18 states have (on average 122.0) internal successors, (2196), 18 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:27,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:27,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:27,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:27,318 INFO L124 PetriNetUnfolderBase]: 62/146 cut-off events. [2023-08-26 10:59:27,318 INFO L125 PetriNetUnfolderBase]: For 317/317 co-relation queries the response was YES. [2023-08-26 10:59:27,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 146 events. 62/146 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 389 event pairs, 10 based on Foata normal form. 4/150 useless extension candidates. Maximal degree in co-relation 706. Up to 60 conditions per place. [2023-08-26 10:59:27,319 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 34 selfloop transitions, 7 changer transitions 24/65 dead transitions. [2023-08-26 10:59:27,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 65 transitions, 455 flow [2023-08-26 10:59:27,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 10:59:27,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 10:59:27,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1621 transitions. [2023-08-26 10:59:27,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3983779798476284 [2023-08-26 10:59:27,323 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1621 transitions. [2023-08-26 10:59:27,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1621 transitions. [2023-08-26 10:59:27,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:27,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1621 transitions. [2023-08-26 10:59:27,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 124.6923076923077) internal successors, (1621), 13 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:27,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 313.0) internal successors, (4382), 14 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:27,328 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 313.0) internal successors, (4382), 14 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:27,328 INFO L175 Difference]: Start difference. First operand has 77 places, 28 transitions, 211 flow. Second operand 13 states and 1621 transitions. [2023-08-26 10:59:27,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 65 transitions, 455 flow [2023-08-26 10:59:27,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 65 transitions, 430 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-26 10:59:27,330 INFO L231 Difference]: Finished difference. Result has 85 places, 23 transitions, 167 flow [2023-08-26 10:59:27,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=167, PETRI_PLACES=85, PETRI_TRANSITIONS=23} [2023-08-26 10:59:27,331 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 52 predicate places. [2023-08-26 10:59:27,331 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 23 transitions, 167 flow [2023-08-26 10:59:27,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 122.0) internal successors, (2196), 18 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:27,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:27,331 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:27,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-08-26 10:59:27,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-26 10:59:27,537 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 10:59:27,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:27,538 INFO L85 PathProgramCache]: Analyzing trace with hash 2025089213, now seen corresponding path program 36 times [2023-08-26 10:59:27,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:27,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488605868] [2023-08-26 10:59:27,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:27,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:27,724 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:27,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:27,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488605868] [2023-08-26 10:59:27,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488605868] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:27,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549756342] [2023-08-26 10:59:27,724 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 10:59:27,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:27,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:27,725 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:59:27,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-26 10:59:27,834 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 10:59:27,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:27,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-26 10:59:27,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:27,909 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-26 10:59:27,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 10:59:27,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549756342] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:59:27,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 10:59:27,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 16 [2023-08-26 10:59:27,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768010787] [2023-08-26 10:59:27,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:59:27,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:59:27,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:27,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:59:27,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2023-08-26 10:59:27,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-26 10:59:27,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 23 transitions, 167 flow. Second operand has 6 states, 6 states have (on average 122.5) internal successors, (735), 6 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:27,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:27,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-26 10:59:27,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:27,951 INFO L124 PetriNetUnfolderBase]: 44/100 cut-off events. [2023-08-26 10:59:27,951 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2023-08-26 10:59:27,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 100 events. 44/100 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 192 event pairs, 0 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 462. Up to 39 conditions per place. [2023-08-26 10:59:27,951 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-08-26 10:59:27,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 34 transitions, 258 flow [2023-08-26 10:59:27,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:59:27,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:59:27,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 747 transitions. [2023-08-26 10:59:27,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977635782747604 [2023-08-26 10:59:27,952 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 747 transitions. [2023-08-26 10:59:27,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 747 transitions. [2023-08-26 10:59:27,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:27,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 747 transitions. [2023-08-26 10:59:27,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.5) internal successors, (747), 6 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:27,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:27,955 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:27,955 INFO L175 Difference]: Start difference. First operand has 85 places, 23 transitions, 167 flow. Second operand 6 states and 747 transitions. [2023-08-26 10:59:27,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 34 transitions, 258 flow [2023-08-26 10:59:27,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 34 transitions, 227 flow, removed 1 selfloop flow, removed 14 redundant places. [2023-08-26 10:59:27,957 INFO L231 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2023-08-26 10:59:27,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2023-08-26 10:59:27,957 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 37 predicate places. [2023-08-26 10:59:27,957 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2023-08-26 10:59:27,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.5) internal successors, (735), 6 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:27,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (23 of 24 remaining) [2023-08-26 10:59:27,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (22 of 24 remaining) [2023-08-26 10:59:27,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (21 of 24 remaining) [2023-08-26 10:59:27,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (20 of 24 remaining) [2023-08-26 10:59:27,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (19 of 24 remaining) [2023-08-26 10:59:27,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (18 of 24 remaining) [2023-08-26 10:59:27,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 24 remaining) [2023-08-26 10:59:27,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 24 remaining) [2023-08-26 10:59:27,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 24 remaining) [2023-08-26 10:59:27,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 24 remaining) [2023-08-26 10:59:27,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (13 of 24 remaining) [2023-08-26 10:59:27,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (12 of 24 remaining) [2023-08-26 10:59:27,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (11 of 24 remaining) [2023-08-26 10:59:27,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (10 of 24 remaining) [2023-08-26 10:59:27,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (9 of 24 remaining) [2023-08-26 10:59:27,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONASSERT (8 of 24 remaining) [2023-08-26 10:59:27,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 24 remaining) [2023-08-26 10:59:27,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 24 remaining) [2023-08-26 10:59:27,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (5 of 24 remaining) [2023-08-26 10:59:27,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (4 of 24 remaining) [2023-08-26 10:59:27,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (3 of 24 remaining) [2023-08-26 10:59:27,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (2 of 24 remaining) [2023-08-26 10:59:27,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (1 of 24 remaining) [2023-08-26 10:59:27,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (0 of 24 remaining) [2023-08-26 10:59:27,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-08-26 10:59:28,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-08-26 10:59:28,168 INFO L445 BasicCegarLoop]: Path program histogram: [36, 2, 1, 1, 1] [2023-08-26 10:59:28,171 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 10:59:28,172 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 10:59:28,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 10:59:28 BasicIcfg [2023-08-26 10:59:28,174 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 10:59:28,175 INFO L158 Benchmark]: Toolchain (without parser) took 33589.19ms. Allocated memory was 350.2MB in the beginning and 648.0MB in the end (delta: 297.8MB). Free memory was 327.3MB in the beginning and 381.6MB in the end (delta: -54.3MB). Peak memory consumption was 246.7MB. Max. memory is 16.0GB. [2023-08-26 10:59:28,175 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 350.2MB. Free memory was 326.9MB in the beginning and 326.8MB in the end (delta: 75.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 10:59:28,175 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.19ms. Allocated memory is still 350.2MB. Free memory was 327.3MB in the beginning and 316.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-26 10:59:28,175 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.72ms. Allocated memory is still 350.2MB. Free memory was 316.3MB in the beginning and 314.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 10:59:28,176 INFO L158 Benchmark]: Boogie Preprocessor took 22.44ms. Allocated memory is still 350.2MB. Free memory was 314.7MB in the beginning and 313.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 10:59:28,176 INFO L158 Benchmark]: RCFGBuilder took 454.81ms. Allocated memory is still 350.2MB. Free memory was 313.1MB in the beginning and 297.8MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 10:59:28,176 INFO L158 Benchmark]: TraceAbstraction took 32870.62ms. Allocated memory was 350.2MB in the beginning and 648.0MB in the end (delta: 297.8MB). Free memory was 297.0MB in the beginning and 381.6MB in the end (delta: -84.6MB). Peak memory consumption was 217.4MB. Max. memory is 16.0GB. [2023-08-26 10:59:28,177 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 350.2MB. Free memory was 326.9MB in the beginning and 326.8MB in the end (delta: 75.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 204.19ms. Allocated memory is still 350.2MB. Free memory was 327.3MB in the beginning and 316.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 31.72ms. Allocated memory is still 350.2MB. Free memory was 316.3MB in the beginning and 314.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.44ms. Allocated memory is still 350.2MB. Free memory was 314.7MB in the beginning and 313.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 454.81ms. Allocated memory is still 350.2MB. Free memory was 313.1MB in the beginning and 297.8MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 32870.62ms. Allocated memory was 350.2MB in the beginning and 648.0MB in the end (delta: 297.8MB). Free memory was 297.0MB in the beginning and 381.6MB in the end (delta: -84.6MB). Peak memory consumption was 217.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 133 PlacesBefore, 33 PlacesAfterwards, 133 TransitionsBefore, 28 TransitionsAfterwards, 1976 CoEnabledTransitionPairs, 8 FixpointIterations, 87 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 169 TotalNumberOfCompositions, 2069 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2069, independent: 2069, independent conditional: 0, independent unconditional: 2069, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1110, independent: 1110, independent conditional: 0, independent unconditional: 1110, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2069, independent: 959, independent conditional: 0, independent unconditional: 959, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1110, unknown conditional: 0, unknown unconditional: 1110] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 41]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 42]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 42]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 49]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 50]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 50]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 59]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 60]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 61]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 61]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 61]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 66]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 67]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 69]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 69]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 176 locations, 24 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 32.7s, OverallIterations: 41, TraceHistogramMax: 5, PathProgramHistogramMax: 36, EmptinessCheckTime: 0.0s, AutomataDifference: 10.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1944 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1944 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 275 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4742 IncrementalHoareTripleChecker+Invalid, 5017 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 275 mSolverCounterUnsat, 0 mSDtfsCounter, 4742 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1395 GetRequests, 885 SyntacticMatches, 60 SemanticMatches, 450 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1314 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6464occurred in iteration=24, InterpolantAutomatonStates: 362, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 1220 NumberOfCodeBlocks, 1208 NumberOfCodeBlocksAsserted, 128 NumberOfCheckSat, 1605 ConstructedInterpolants, 0 QuantifiedInterpolants, 6485 SizeOfPredicates, 12 NumberOfNonLiveVariables, 5815 ConjunctsInSsa, 372 ConjunctsInUnsatCore, 111 InterpolantComputations, 11 PerfectInterpolantSequences, 431/962 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 10:59:28,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...