/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_03-funloop_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 06:58:54,337 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 06:58:54,423 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 06:58:54,428 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 06:58:54,428 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 06:58:54,458 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 06:58:54,459 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 06:58:54,459 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 06:58:54,460 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 06:58:54,463 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 06:58:54,464 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 06:58:54,464 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 06:58:54,464 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 06:58:54,465 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 06:58:54,466 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 06:58:54,466 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 06:58:54,466 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 06:58:54,466 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 06:58:54,467 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 06:58:54,467 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 06:58:54,467 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 06:58:54,467 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 06:58:54,468 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 06:58:54,468 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 06:58:54,468 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 06:58:54,469 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 06:58:54,469 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 06:58:54,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 06:58:54,469 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 06:58:54,469 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 06:58:54,470 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 06:58:54,470 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 06:58:54,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 06:58:54,471 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 06:58:54,471 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 06:58:54,471 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 06:58:54,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 06:58:54,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 06:58:54,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 06:58:54,793 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 06:58:54,793 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 06:58:54,794 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_03-funloop_simple.i [2023-08-26 06:58:55,997 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 06:58:56,284 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 06:58:56,285 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_03-funloop_simple.i [2023-08-26 06:58:56,301 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f35412c2e/50735fc5d04f4a14a355d7ef135d6569/FLAG240f32427 [2023-08-26 06:58:56,312 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f35412c2e/50735fc5d04f4a14a355d7ef135d6569 [2023-08-26 06:58:56,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 06:58:56,315 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 06:58:56,316 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 06:58:56,316 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 06:58:56,319 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 06:58:56,319 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:58:56" (1/1) ... [2023-08-26 06:58:56,320 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f377f5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:56, skipping insertion in model container [2023-08-26 06:58:56,320 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:58:56" (1/1) ... [2023-08-26 06:58:56,372 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 06:58:56,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 06:58:56,779 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 06:58:56,805 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 06:58:56,807 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 06:58:56,813 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-26 06:58:56,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 06:58:56,899 INFO L206 MainTranslator]: Completed translation [2023-08-26 06:58:56,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:56 WrapperNode [2023-08-26 06:58:56,899 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 06:58:56,900 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 06:58:56,900 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 06:58:56,901 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 06:58:56,906 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:56" (1/1) ... [2023-08-26 06:58:56,935 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:56" (1/1) ... [2023-08-26 06:58:56,968 INFO L138 Inliner]: procedures = 262, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 113 [2023-08-26 06:58:56,969 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 06:58:56,970 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 06:58:56,971 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 06:58:56,971 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 06:58:56,978 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:56" (1/1) ... [2023-08-26 06:58:56,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:56" (1/1) ... [2023-08-26 06:58:56,994 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:56" (1/1) ... [2023-08-26 06:58:56,995 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:56" (1/1) ... [2023-08-26 06:58:57,003 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:56" (1/1) ... [2023-08-26 06:58:57,006 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:56" (1/1) ... [2023-08-26 06:58:57,007 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:56" (1/1) ... [2023-08-26 06:58:57,008 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:56" (1/1) ... [2023-08-26 06:58:57,024 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 06:58:57,025 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 06:58:57,025 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 06:58:57,025 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 06:58:57,025 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:56" (1/1) ... [2023-08-26 06:58:57,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 06:58:57,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:58:57,049 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 06:58:57,065 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 06:58:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 06:58:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 06:58:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 06:58:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 06:58:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 06:58:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 06:58:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 06:58:57,094 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 06:58:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 06:58:57,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 06:58:57,095 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 06:58:57,255 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 06:58:57,257 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 06:58:57,469 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 06:58:57,487 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 06:58:57,487 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-26 06:58:57,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:58:57 BoogieIcfgContainer [2023-08-26 06:58:57,489 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 06:58:57,491 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 06:58:57,491 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 06:58:57,493 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 06:58:57,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:58:56" (1/3) ... [2023-08-26 06:58:57,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2277e605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:58:57, skipping insertion in model container [2023-08-26 06:58:57,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:56" (2/3) ... [2023-08-26 06:58:57,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2277e605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:58:57, skipping insertion in model container [2023-08-26 06:58:57,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:58:57" (3/3) ... [2023-08-26 06:58:57,496 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_03-funloop_simple.i [2023-08-26 06:58:57,510 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 06:58:57,510 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-26 06:58:57,510 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 06:58:57,612 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 06:58:57,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 120 transitions, 245 flow [2023-08-26 06:58:57,681 INFO L124 PetriNetUnfolderBase]: 6/119 cut-off events. [2023-08-26 06:58:57,682 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:58:57,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 119 events. 6/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 210 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2023-08-26 06:58:57,689 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 120 transitions, 245 flow [2023-08-26 06:58:57,693 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 119 transitions, 241 flow [2023-08-26 06:58:57,696 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 06:58:57,704 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 119 transitions, 241 flow [2023-08-26 06:58:57,706 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 119 transitions, 241 flow [2023-08-26 06:58:57,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 119 transitions, 241 flow [2023-08-26 06:58:57,731 INFO L124 PetriNetUnfolderBase]: 6/119 cut-off events. [2023-08-26 06:58:57,731 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:58:57,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 119 events. 6/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 210 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2023-08-26 06:58:57,734 INFO L119 LiptonReduction]: Number of co-enabled transitions 4366 [2023-08-26 06:58:59,148 INFO L134 LiptonReduction]: Checked pairs total: 13471 [2023-08-26 06:58:59,149 INFO L136 LiptonReduction]: Total number of compositions: 69 [2023-08-26 06:58:59,161 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 06:58:59,166 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;@1f6e790, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 06:58:59,166 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-26 06:58:59,172 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 06:58:59,172 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2023-08-26 06:58:59,172 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:58:59,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:58:59,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:58:59,177 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:58:59,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:58:59,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1480078767, now seen corresponding path program 1 times [2023-08-26 06:58:59,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:58:59,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169929088] [2023-08-26 06:58:59,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:58:59,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:58:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:58:59,385 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 06:58:59,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:58:59,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169929088] [2023-08-26 06:58:59,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169929088] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:58:59,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:58:59,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:58:59,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86539569] [2023-08-26 06:58:59,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:58:59,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:58:59,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:58:59,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:58:59,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:58:59,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 189 [2023-08-26 06:58:59,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:59,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:58:59,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 189 [2023-08-26 06:58:59,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:58:59,539 INFO L124 PetriNetUnfolderBase]: 90/369 cut-off events. [2023-08-26 06:58:59,539 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:58:59,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 555 conditions, 369 events. 90/369 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2004 event pairs, 70 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 540. Up to 181 conditions per place. [2023-08-26 06:58:59,543 INFO L140 encePairwiseOnDemand]: 186/189 looper letters, 22 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-08-26 06:58:59,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 54 transitions, 159 flow [2023-08-26 06:58:59,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:58:59,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:58:59,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2023-08-26 06:58:59,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6155202821869489 [2023-08-26 06:58:59,556 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2023-08-26 06:58:59,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2023-08-26 06:58:59,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:58:59,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2023-08-26 06:58:59,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:59,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:59,574 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:59,576 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 109 flow. Second operand 3 states and 349 transitions. [2023-08-26 06:58:59,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 54 transitions, 159 flow [2023-08-26 06:58:59,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 06:58:59,581 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 120 flow [2023-08-26 06:58:59,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2023-08-26 06:58:59,586 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2023-08-26 06:58:59,587 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 120 flow [2023-08-26 06:58:59,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:59,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:58:59,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:58:59,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 06:58:59,588 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:58:59,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:58:59,589 INFO L85 PathProgramCache]: Analyzing trace with hash -267564913, now seen corresponding path program 1 times [2023-08-26 06:58:59,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:58:59,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174857787] [2023-08-26 06:58:59,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:58:59,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:58:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:58:59,673 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 06:58:59,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:58:59,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174857787] [2023-08-26 06:58:59,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174857787] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:58:59,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260787452] [2023-08-26 06:58:59,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:58:59,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:58:59,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:58:59,677 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 06:58:59,687 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 06:58:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:58:59,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-26 06:58:59,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:58:59,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 06:58:59,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 06:58:59,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260787452] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:58:59,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 06:58:59,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-26 06:58:59,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873165749] [2023-08-26 06:58:59,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:58:59,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:58:59,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:58:59,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:58:59,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 06:58:59,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 189 [2023-08-26 06:58:59,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:59,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:58:59,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 189 [2023-08-26 06:58:59,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:58:59,877 INFO L124 PetriNetUnfolderBase]: 138/545 cut-off events. [2023-08-26 06:58:59,878 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:58:59,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 545 events. 138/545 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2892 event pairs, 73 based on Foata normal form. 0/495 useless extension candidates. Maximal degree in co-relation 822. Up to 182 conditions per place. [2023-08-26 06:58:59,881 INFO L140 encePairwiseOnDemand]: 186/189 looper letters, 36 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-26 06:58:59,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 224 flow [2023-08-26 06:58:59,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:58:59,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:58:59,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2023-08-26 06:58:59,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6384479717813051 [2023-08-26 06:58:59,884 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2023-08-26 06:58:59,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2023-08-26 06:58:59,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:58:59,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2023-08-26 06:58:59,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:59,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:59,909 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:59,909 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 120 flow. Second operand 3 states and 362 transitions. [2023-08-26 06:58:59,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 224 flow [2023-08-26 06:58:59,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 68 transitions, 220 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 06:58:59,911 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 128 flow [2023-08-26 06:58:59,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2023-08-26 06:58:59,912 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 4 predicate places. [2023-08-26 06:58:59,912 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 128 flow [2023-08-26 06:58:59,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:59,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:58:59,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:58:59,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 06:59:00,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:00,122 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:00,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:00,122 INFO L85 PathProgramCache]: Analyzing trace with hash 2115531480, now seen corresponding path program 1 times [2023-08-26 06:59:00,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:00,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695534100] [2023-08-26 06:59:00,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:00,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:00,199 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 06:59:00,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:00,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695534100] [2023-08-26 06:59:00,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695534100] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:00,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199622676] [2023-08-26 06:59:00,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:00,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:00,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:00,208 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 06:59:00,210 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 06:59:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:00,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 06:59:00,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:00,344 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 06:59:00,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 06:59:00,362 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 06:59:00,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199622676] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 06:59:00,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 06:59:00,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-26 06:59:00,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292871153] [2023-08-26 06:59:00,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 06:59:00,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 06:59:00,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:00,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 06:59:00,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 06:59:00,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 189 [2023-08-26 06:59:00,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 109.66666666666667) internal successors, (658), 6 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:00,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:00,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 189 [2023-08-26 06:59:00,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:00,493 INFO L124 PetriNetUnfolderBase]: 138/548 cut-off events. [2023-08-26 06:59:00,493 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-08-26 06:59:00,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 548 events. 138/548 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2933 event pairs, 112 based on Foata normal form. 0/513 useless extension candidates. Maximal degree in co-relation 856. Up to 277 conditions per place. [2023-08-26 06:59:00,499 INFO L140 encePairwiseOnDemand]: 186/189 looper letters, 23 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2023-08-26 06:59:00,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 58 transitions, 196 flow [2023-08-26 06:59:00,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:59:00,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:59:00,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 678 transitions. [2023-08-26 06:59:00,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5978835978835979 [2023-08-26 06:59:00,502 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 678 transitions. [2023-08-26 06:59:00,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 678 transitions. [2023-08-26 06:59:00,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:00,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 678 transitions. [2023-08-26 06:59:00,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:00,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:00,508 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:00,509 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 128 flow. Second operand 6 states and 678 transitions. [2023-08-26 06:59:00,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 58 transitions, 196 flow [2023-08-26 06:59:00,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 06:59:00,513 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 162 flow [2023-08-26 06:59:00,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2023-08-26 06:59:00,515 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2023-08-26 06:59:00,515 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 162 flow [2023-08-26 06:59:00,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.66666666666667) internal successors, (658), 6 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:00,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:00,517 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:00,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-26 06:59:00,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-26 06:59:00,722 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:00,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:00,723 INFO L85 PathProgramCache]: Analyzing trace with hash 149189048, now seen corresponding path program 2 times [2023-08-26 06:59:00,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:00,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582816392] [2023-08-26 06:59:00,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:00,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:00,843 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:59:00,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:00,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582816392] [2023-08-26 06:59:00,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582816392] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:00,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243067063] [2023-08-26 06:59:00,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 06:59:00,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:00,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:00,845 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 06:59:00,874 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 06:59:00,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 06:59:00,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 06:59:00,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 06:59:00,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:01,004 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 06:59:01,033 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-26 06:59:01,067 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 06:59:01,070 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-26 06:59:01,116 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 06:59:01,116 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2023-08-26 06:59:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 06:59:01,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 06:59:01,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243067063] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:01,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 06:59:01,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 13 [2023-08-26 06:59:01,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993112156] [2023-08-26 06:59:01,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:01,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 06:59:01,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:01,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 06:59:01,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-08-26 06:59:01,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 189 [2023-08-26 06:59:01,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 162 flow. Second operand has 9 states, 9 states have (on average 63.333333333333336) internal successors, (570), 9 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:01,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:01,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 189 [2023-08-26 06:59:01,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:02,120 INFO L124 PetriNetUnfolderBase]: 1899/3802 cut-off events. [2023-08-26 06:59:02,120 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2023-08-26 06:59:02,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7793 conditions, 3802 events. 1899/3802 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 21716 event pairs, 810 based on Foata normal form. 0/3286 useless extension candidates. Maximal degree in co-relation 7759. Up to 1700 conditions per place. [2023-08-26 06:59:02,143 INFO L140 encePairwiseOnDemand]: 173/189 looper letters, 279 selfloop transitions, 27 changer transitions 0/306 dead transitions. [2023-08-26 06:59:02,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 306 transitions, 1326 flow [2023-08-26 06:59:02,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 06:59:02,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 06:59:02,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 916 transitions. [2023-08-26 06:59:02,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4846560846560847 [2023-08-26 06:59:02,147 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 916 transitions. [2023-08-26 06:59:02,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 916 transitions. [2023-08-26 06:59:02,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:02,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 916 transitions. [2023-08-26 06:59:02,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:02,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 189.0) internal successors, (2079), 11 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:02,154 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 189.0) internal successors, (2079), 11 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:02,155 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 162 flow. Second operand 10 states and 916 transitions. [2023-08-26 06:59:02,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 306 transitions, 1326 flow [2023-08-26 06:59:02,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 306 transitions, 1312 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-26 06:59:02,160 INFO L231 Difference]: Finished difference. Result has 79 places, 83 transitions, 352 flow [2023-08-26 06:59:02,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=352, PETRI_PLACES=79, PETRI_TRANSITIONS=83} [2023-08-26 06:59:02,161 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 25 predicate places. [2023-08-26 06:59:02,162 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 83 transitions, 352 flow [2023-08-26 06:59:02,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 63.333333333333336) internal successors, (570), 9 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:02,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:02,162 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:02,171 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 06:59:02,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:02,368 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:02,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:02,369 INFO L85 PathProgramCache]: Analyzing trace with hash 2089455146, now seen corresponding path program 1 times [2023-08-26 06:59:02,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:02,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675993661] [2023-08-26 06:59:02,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:02,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:02,484 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:59:02,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:02,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675993661] [2023-08-26 06:59:02,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675993661] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:02,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097416617] [2023-08-26 06:59:02,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:02,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:02,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:02,486 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 06:59:02,500 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 06:59:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:02,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 06:59:02,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:59:02,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 06:59:02,673 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:59:02,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097416617] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 06:59:02,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 06:59:02,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-26 06:59:02,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942541421] [2023-08-26 06:59:02,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 06:59:02,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 06:59:02,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:02,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 06:59:02,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-26 06:59:02,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 189 [2023-08-26 06:59:02,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 83 transitions, 352 flow. Second operand has 12 states, 12 states have (on average 109.33333333333333) internal successors, (1312), 12 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:02,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:02,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 189 [2023-08-26 06:59:02,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:02,891 INFO L124 PetriNetUnfolderBase]: 452/1563 cut-off events. [2023-08-26 06:59:02,891 INFO L125 PetriNetUnfolderBase]: For 964/988 co-relation queries the response was YES. [2023-08-26 06:59:02,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3682 conditions, 1563 events. 452/1563 cut-off events. For 964/988 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 10432 event pairs, 311 based on Foata normal form. 11/1510 useless extension candidates. Maximal degree in co-relation 3623. Up to 753 conditions per place. [2023-08-26 06:59:02,902 INFO L140 encePairwiseOnDemand]: 186/189 looper letters, 31 selfloop transitions, 11 changer transitions 0/89 dead transitions. [2023-08-26 06:59:02,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 89 transitions, 472 flow [2023-08-26 06:59:02,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 06:59:02,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 06:59:02,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1335 transitions. [2023-08-26 06:59:02,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5886243386243386 [2023-08-26 06:59:02,907 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1335 transitions. [2023-08-26 06:59:02,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1335 transitions. [2023-08-26 06:59:02,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:02,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1335 transitions. [2023-08-26 06:59:02,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 111.25) internal successors, (1335), 12 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:02,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 189.0) internal successors, (2457), 13 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:02,914 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 189.0) internal successors, (2457), 13 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:02,914 INFO L175 Difference]: Start difference. First operand has 79 places, 83 transitions, 352 flow. Second operand 12 states and 1335 transitions. [2023-08-26 06:59:02,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 89 transitions, 472 flow [2023-08-26 06:59:02,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 471 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 06:59:02,923 INFO L231 Difference]: Finished difference. Result has 95 places, 89 transitions, 435 flow [2023-08-26 06:59:02,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=435, PETRI_PLACES=95, PETRI_TRANSITIONS=89} [2023-08-26 06:59:02,925 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 41 predicate places. [2023-08-26 06:59:02,926 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 89 transitions, 435 flow [2023-08-26 06:59:02,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 109.33333333333333) internal successors, (1312), 12 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:02,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:02,926 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:02,933 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 06:59:03,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:03,133 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:03,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:03,133 INFO L85 PathProgramCache]: Analyzing trace with hash 746912298, now seen corresponding path program 2 times [2023-08-26 06:59:03,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:03,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104553054] [2023-08-26 06:59:03,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:03,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:03,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:03,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104553054] [2023-08-26 06:59:03,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104553054] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:03,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:59:03,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 06:59:03,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937148004] [2023-08-26 06:59:03,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:03,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 06:59:03,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:03,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 06:59:03,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 06:59:03,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 189 [2023-08-26 06:59:03,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 89 transitions, 435 flow. Second operand has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:03,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:03,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 189 [2023-08-26 06:59:03,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:04,144 INFO L124 PetriNetUnfolderBase]: 2130/4310 cut-off events. [2023-08-26 06:59:04,144 INFO L125 PetriNetUnfolderBase]: For 3557/3557 co-relation queries the response was YES. [2023-08-26 06:59:04,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11898 conditions, 4310 events. 2130/4310 cut-off events. For 3557/3557 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 25639 event pairs, 1104 based on Foata normal form. 0/3976 useless extension candidates. Maximal degree in co-relation 11815. Up to 3399 conditions per place. [2023-08-26 06:59:04,178 INFO L140 encePairwiseOnDemand]: 178/189 looper letters, 172 selfloop transitions, 30 changer transitions 0/203 dead transitions. [2023-08-26 06:59:04,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 203 transitions, 1299 flow [2023-08-26 06:59:04,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:59:04,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:59:04,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 575 transitions. [2023-08-26 06:59:04,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070546737213404 [2023-08-26 06:59:04,181 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 575 transitions. [2023-08-26 06:59:04,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 575 transitions. [2023-08-26 06:59:04,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:04,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 575 transitions. [2023-08-26 06:59:04,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:04,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:04,185 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:04,187 INFO L175 Difference]: Start difference. First operand has 95 places, 89 transitions, 435 flow. Second operand 6 states and 575 transitions. [2023-08-26 06:59:04,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 203 transitions, 1299 flow [2023-08-26 06:59:04,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 203 transitions, 1251 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-26 06:59:04,195 INFO L231 Difference]: Finished difference. Result has 100 places, 114 transitions, 611 flow [2023-08-26 06:59:04,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=611, PETRI_PLACES=100, PETRI_TRANSITIONS=114} [2023-08-26 06:59:04,198 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 46 predicate places. [2023-08-26 06:59:04,199 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 114 transitions, 611 flow [2023-08-26 06:59:04,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:04,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:04,200 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:04,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 06:59:04,200 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:04,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:04,201 INFO L85 PathProgramCache]: Analyzing trace with hash 553650768, now seen corresponding path program 1 times [2023-08-26 06:59:04,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:04,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165522704] [2023-08-26 06:59:04,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:04,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:04,508 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:04,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:04,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165522704] [2023-08-26 06:59:04,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165522704] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:04,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:59:04,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 06:59:04,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26277789] [2023-08-26 06:59:04,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:04,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 06:59:04,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:04,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 06:59:04,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 06:59:04,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 189 [2023-08-26 06:59:04,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 114 transitions, 611 flow. Second operand has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:04,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:04,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 189 [2023-08-26 06:59:04,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:05,468 INFO L124 PetriNetUnfolderBase]: 2574/5200 cut-off events. [2023-08-26 06:59:05,469 INFO L125 PetriNetUnfolderBase]: For 6554/6554 co-relation queries the response was YES. [2023-08-26 06:59:05,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16475 conditions, 5200 events. 2574/5200 cut-off events. For 6554/6554 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 32016 event pairs, 1069 based on Foata normal form. 0/4884 useless extension candidates. Maximal degree in co-relation 16412. Up to 4271 conditions per place. [2023-08-26 06:59:05,518 INFO L140 encePairwiseOnDemand]: 166/189 looper letters, 164 selfloop transitions, 90 changer transitions 0/255 dead transitions. [2023-08-26 06:59:05,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 255 transitions, 1718 flow [2023-08-26 06:59:05,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:59:05,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:59:05,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 610 transitions. [2023-08-26 06:59:05,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379188712522046 [2023-08-26 06:59:05,520 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 610 transitions. [2023-08-26 06:59:05,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 610 transitions. [2023-08-26 06:59:05,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:05,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 610 transitions. [2023-08-26 06:59:05,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:05,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:05,525 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:05,525 INFO L175 Difference]: Start difference. First operand has 100 places, 114 transitions, 611 flow. Second operand 6 states and 610 transitions. [2023-08-26 06:59:05,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 255 transitions, 1718 flow [2023-08-26 06:59:05,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 255 transitions, 1718 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 06:59:05,542 INFO L231 Difference]: Finished difference. Result has 110 places, 194 transitions, 1450 flow [2023-08-26 06:59:05,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1450, PETRI_PLACES=110, PETRI_TRANSITIONS=194} [2023-08-26 06:59:05,543 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 56 predicate places. [2023-08-26 06:59:05,543 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 194 transitions, 1450 flow [2023-08-26 06:59:05,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:05,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:05,544 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:05,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 06:59:05,544 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:05,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:05,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1845696296, now seen corresponding path program 1 times [2023-08-26 06:59:05,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:05,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193516579] [2023-08-26 06:59:05,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:05,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:05,820 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:05,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:05,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193516579] [2023-08-26 06:59:05,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193516579] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:05,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:59:05,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 06:59:05,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893959065] [2023-08-26 06:59:05,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:05,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 06:59:05,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:05,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 06:59:05,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 06:59:05,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 189 [2023-08-26 06:59:05,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 194 transitions, 1450 flow. Second operand has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:05,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:05,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 189 [2023-08-26 06:59:05,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:06,762 INFO L124 PetriNetUnfolderBase]: 2922/5904 cut-off events. [2023-08-26 06:59:06,762 INFO L125 PetriNetUnfolderBase]: For 12333/12333 co-relation queries the response was YES. [2023-08-26 06:59:06,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23067 conditions, 5904 events. 2922/5904 cut-off events. For 12333/12333 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 37257 event pairs, 992 based on Foata normal form. 0/5704 useless extension candidates. Maximal degree in co-relation 22999. Up to 5044 conditions per place. [2023-08-26 06:59:06,810 INFO L140 encePairwiseOnDemand]: 174/189 looper letters, 244 selfloop transitions, 72 changer transitions 0/317 dead transitions. [2023-08-26 06:59:06,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 317 transitions, 2806 flow [2023-08-26 06:59:06,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:59:06,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:59:06,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 562 transitions. [2023-08-26 06:59:06,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49559082892416223 [2023-08-26 06:59:06,812 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 562 transitions. [2023-08-26 06:59:06,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 562 transitions. [2023-08-26 06:59:06,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:06,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 562 transitions. [2023-08-26 06:59:06,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:06,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:06,818 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:06,818 INFO L175 Difference]: Start difference. First operand has 110 places, 194 transitions, 1450 flow. Second operand 6 states and 562 transitions. [2023-08-26 06:59:06,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 317 transitions, 2806 flow [2023-08-26 06:59:06,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 317 transitions, 2604 flow, removed 101 selfloop flow, removed 0 redundant places. [2023-08-26 06:59:06,857 INFO L231 Difference]: Finished difference. Result has 120 places, 252 transitions, 1990 flow [2023-08-26 06:59:06,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1990, PETRI_PLACES=120, PETRI_TRANSITIONS=252} [2023-08-26 06:59:06,858 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 66 predicate places. [2023-08-26 06:59:06,858 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 252 transitions, 1990 flow [2023-08-26 06:59:06,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:06,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:06,858 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:06,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 06:59:06,858 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:06,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:06,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1230778107, now seen corresponding path program 1 times [2023-08-26 06:59:06,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:06,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640165729] [2023-08-26 06:59:06,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:06,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 06:59:07,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:07,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640165729] [2023-08-26 06:59:07,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640165729] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:07,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406321722] [2023-08-26 06:59:07,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:07,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:07,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:07,401 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 06:59:07,419 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 06:59:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:07,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-26 06:59:07,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:07,573 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-26 06:59:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:07,593 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 06:59:07,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406321722] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:07,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 06:59:07,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-26 06:59:07,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778767022] [2023-08-26 06:59:07,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:07,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 06:59:07,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:07,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 06:59:07,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-26 06:59:07,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 189 [2023-08-26 06:59:07,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 252 transitions, 1990 flow. Second operand has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 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 06:59:07,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:07,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 189 [2023-08-26 06:59:07,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:08,292 INFO L124 PetriNetUnfolderBase]: 2071/4892 cut-off events. [2023-08-26 06:59:08,293 INFO L125 PetriNetUnfolderBase]: For 14761/14979 co-relation queries the response was YES. [2023-08-26 06:59:08,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20223 conditions, 4892 events. 2071/4892 cut-off events. For 14761/14979 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 34478 event pairs, 363 based on Foata normal form. 22/4798 useless extension candidates. Maximal degree in co-relation 20150. Up to 1341 conditions per place. [2023-08-26 06:59:08,330 INFO L140 encePairwiseOnDemand]: 182/189 looper letters, 193 selfloop transitions, 12 changer transitions 0/358 dead transitions. [2023-08-26 06:59:08,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 358 transitions, 3141 flow [2023-08-26 06:59:08,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:59:08,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:59:08,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 559 transitions. [2023-08-26 06:59:08,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4929453262786596 [2023-08-26 06:59:08,333 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 559 transitions. [2023-08-26 06:59:08,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 559 transitions. [2023-08-26 06:59:08,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:08,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 559 transitions. [2023-08-26 06:59:08,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.16666666666667) internal successors, (559), 6 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:08,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:08,336 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:08,336 INFO L175 Difference]: Start difference. First operand has 120 places, 252 transitions, 1990 flow. Second operand 6 states and 559 transitions. [2023-08-26 06:59:08,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 358 transitions, 3141 flow [2023-08-26 06:59:08,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 358 transitions, 3041 flow, removed 50 selfloop flow, removed 0 redundant places. [2023-08-26 06:59:08,383 INFO L231 Difference]: Finished difference. Result has 128 places, 260 transitions, 1995 flow [2023-08-26 06:59:08,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1995, PETRI_PLACES=128, PETRI_TRANSITIONS=260} [2023-08-26 06:59:08,384 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 74 predicate places. [2023-08-26 06:59:08,384 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 260 transitions, 1995 flow [2023-08-26 06:59:08,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 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 06:59:08,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:08,385 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:08,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 06:59:08,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:08,591 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:08,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:08,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1342936505, now seen corresponding path program 2 times [2023-08-26 06:59:08,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:08,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679062557] [2023-08-26 06:59:08,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:08,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:09,078 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 06:59:09,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:09,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679062557] [2023-08-26 06:59:09,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679062557] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:09,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553198191] [2023-08-26 06:59:09,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 06:59:09,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:09,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:09,080 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 06:59:09,082 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 06:59:09,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 06:59:09,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 06:59:09,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-26 06:59:09,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:09,219 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-26 06:59:09,260 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:09,260 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 06:59:09,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553198191] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:09,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 06:59:09,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-26 06:59:09,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583693462] [2023-08-26 06:59:09,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:09,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 06:59:09,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:09,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 06:59:09,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-26 06:59:09,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 189 [2023-08-26 06:59:09,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 260 transitions, 1995 flow. Second operand has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 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 06:59:09,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:09,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 189 [2023-08-26 06:59:09,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:10,109 INFO L124 PetriNetUnfolderBase]: 2339/5530 cut-off events. [2023-08-26 06:59:10,109 INFO L125 PetriNetUnfolderBase]: For 17059/17349 co-relation queries the response was YES. [2023-08-26 06:59:10,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22602 conditions, 5530 events. 2339/5530 cut-off events. For 17059/17349 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 40519 event pairs, 396 based on Foata normal form. 22/5420 useless extension candidates. Maximal degree in co-relation 22524. Up to 1711 conditions per place. [2023-08-26 06:59:10,144 INFO L140 encePairwiseOnDemand]: 182/189 looper letters, 157 selfloop transitions, 19 changer transitions 0/329 dead transitions. [2023-08-26 06:59:10,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 329 transitions, 2953 flow [2023-08-26 06:59:10,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:59:10,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:59:10,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 546 transitions. [2023-08-26 06:59:10,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2023-08-26 06:59:10,150 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 546 transitions. [2023-08-26 06:59:10,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 546 transitions. [2023-08-26 06:59:10,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:10,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 546 transitions. [2023-08-26 06:59:10,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:10,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:10,155 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:10,155 INFO L175 Difference]: Start difference. First operand has 128 places, 260 transitions, 1995 flow. Second operand 6 states and 546 transitions. [2023-08-26 06:59:10,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 329 transitions, 2953 flow [2023-08-26 06:59:10,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 329 transitions, 2939 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 06:59:10,282 INFO L231 Difference]: Finished difference. Result has 134 places, 270 transitions, 2154 flow [2023-08-26 06:59:10,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2154, PETRI_PLACES=134, PETRI_TRANSITIONS=270} [2023-08-26 06:59:10,283 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 80 predicate places. [2023-08-26 06:59:10,283 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 270 transitions, 2154 flow [2023-08-26 06:59:10,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 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 06:59:10,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:10,284 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:10,292 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 06:59:10,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:10,490 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:10,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:10,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1415061544, now seen corresponding path program 1 times [2023-08-26 06:59:10,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:10,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385343293] [2023-08-26 06:59:10,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:10,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:10,970 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 06:59:10,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:10,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385343293] [2023-08-26 06:59:10,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385343293] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:10,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260949448] [2023-08-26 06:59:10,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:10,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:10,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:10,972 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 06:59:10,974 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 06:59:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:11,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-26 06:59:11,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:11,135 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-26 06:59:11,181 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:11,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 06:59:11,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260949448] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:11,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 06:59:11,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-26 06:59:11,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992956282] [2023-08-26 06:59:11,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:11,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 06:59:11,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:11,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 06:59:11,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-08-26 06:59:11,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 189 [2023-08-26 06:59:11,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 270 transitions, 2154 flow. Second operand has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 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 06:59:11,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:11,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 189 [2023-08-26 06:59:11,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:11,948 INFO L124 PetriNetUnfolderBase]: 2035/4869 cut-off events. [2023-08-26 06:59:11,948 INFO L125 PetriNetUnfolderBase]: For 16510/16773 co-relation queries the response was YES. [2023-08-26 06:59:11,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20281 conditions, 4869 events. 2035/4869 cut-off events. For 16510/16773 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 35158 event pairs, 380 based on Foata normal form. 26/4769 useless extension candidates. Maximal degree in co-relation 20200. Up to 1670 conditions per place. [2023-08-26 06:59:11,980 INFO L140 encePairwiseOnDemand]: 182/189 looper letters, 157 selfloop transitions, 22 changer transitions 0/332 dead transitions. [2023-08-26 06:59:11,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 332 transitions, 3033 flow [2023-08-26 06:59:11,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 06:59:11,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 06:59:11,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 634 transitions. [2023-08-26 06:59:11,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47921390778533635 [2023-08-26 06:59:11,983 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 634 transitions. [2023-08-26 06:59:11,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 634 transitions. [2023-08-26 06:59:11,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:11,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 634 transitions. [2023-08-26 06:59:11,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.57142857142857) internal successors, (634), 7 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:11,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:11,987 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:11,987 INFO L175 Difference]: Start difference. First operand has 134 places, 270 transitions, 2154 flow. Second operand 7 states and 634 transitions. [2023-08-26 06:59:11,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 332 transitions, 3033 flow [2023-08-26 06:59:12,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 332 transitions, 3009 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-26 06:59:12,033 INFO L231 Difference]: Finished difference. Result has 140 places, 273 transitions, 2232 flow [2023-08-26 06:59:12,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2232, PETRI_PLACES=140, PETRI_TRANSITIONS=273} [2023-08-26 06:59:12,034 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 86 predicate places. [2023-08-26 06:59:12,034 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 273 transitions, 2232 flow [2023-08-26 06:59:12,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 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 06:59:12,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:12,034 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:12,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-26 06:59:12,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:12,241 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:12,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:12,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1485006160, now seen corresponding path program 2 times [2023-08-26 06:59:12,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:12,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133284719] [2023-08-26 06:59:12,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:12,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:12,547 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 06:59:12,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:12,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133284719] [2023-08-26 06:59:12,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133284719] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:12,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868912797] [2023-08-26 06:59:12,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 06:59:12,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:12,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:12,548 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 06:59:12,551 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 06:59:12,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 06:59:12,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 06:59:12,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-26 06:59:12,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:12,700 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-26 06:59:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:12,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 06:59:12,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868912797] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:12,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 06:59:12,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-26 06:59:12,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808390286] [2023-08-26 06:59:12,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:12,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 06:59:12,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:12,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 06:59:12,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-26 06:59:12,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 189 [2023-08-26 06:59:12,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 273 transitions, 2232 flow. Second operand has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 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 06:59:12,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:12,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 189 [2023-08-26 06:59:12,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:13,614 INFO L124 PetriNetUnfolderBase]: 2143/5163 cut-off events. [2023-08-26 06:59:13,614 INFO L125 PetriNetUnfolderBase]: For 18014/18276 co-relation queries the response was YES. [2023-08-26 06:59:13,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21423 conditions, 5163 events. 2143/5163 cut-off events. For 18014/18276 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 39160 event pairs, 354 based on Foata normal form. 18/5028 useless extension candidates. Maximal degree in co-relation 21339. Up to 1525 conditions per place. [2023-08-26 06:59:13,665 INFO L140 encePairwiseOnDemand]: 182/189 looper letters, 248 selfloop transitions, 17 changer transitions 0/418 dead transitions. [2023-08-26 06:59:13,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 418 transitions, 3695 flow [2023-08-26 06:59:13,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:59:13,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:59:13,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 572 transitions. [2023-08-26 06:59:13,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044091710758377 [2023-08-26 06:59:13,668 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 572 transitions. [2023-08-26 06:59:13,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 572 transitions. [2023-08-26 06:59:13,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:13,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 572 transitions. [2023-08-26 06:59:13,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.33333333333333) internal successors, (572), 6 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:13,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:13,671 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:13,672 INFO L175 Difference]: Start difference. First operand has 140 places, 273 transitions, 2232 flow. Second operand 6 states and 572 transitions. [2023-08-26 06:59:13,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 418 transitions, 3695 flow [2023-08-26 06:59:13,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 418 transitions, 3645 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-26 06:59:13,725 INFO L231 Difference]: Finished difference. Result has 143 places, 275 transitions, 2241 flow [2023-08-26 06:59:13,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=2141, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2241, PETRI_PLACES=143, PETRI_TRANSITIONS=275} [2023-08-26 06:59:13,726 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 89 predicate places. [2023-08-26 06:59:13,726 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 275 transitions, 2241 flow [2023-08-26 06:59:13,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 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 06:59:13,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:13,727 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:13,736 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 06:59:13,932 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,SelfDestructingSolverStorable11 [2023-08-26 06:59:13,933 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:13,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:13,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1341143083, now seen corresponding path program 1 times [2023-08-26 06:59:13,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:13,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43357238] [2023-08-26 06:59:13,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:13,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:13,998 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:13,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:13,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43357238] [2023-08-26 06:59:13,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43357238] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:13,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204128449] [2023-08-26 06:59:13,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:13,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:13,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:14,000 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 06:59:14,024 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 06:59:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:14,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 06:59:14,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:14,163 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:14,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 06:59:14,190 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:14,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204128449] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 06:59:14,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 06:59:14,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-26 06:59:14,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559813456] [2023-08-26 06:59:14,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 06:59:14,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 06:59:14,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:14,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 06:59:14,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 06:59:14,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 189 [2023-08-26 06:59:14,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 275 transitions, 2241 flow. Second operand has 7 states, 7 states have (on average 111.85714285714286) internal successors, (783), 7 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:14,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:14,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 189 [2023-08-26 06:59:14,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:15,520 INFO L124 PetriNetUnfolderBase]: 3639/8960 cut-off events. [2023-08-26 06:59:15,520 INFO L125 PetriNetUnfolderBase]: For 32136/32534 co-relation queries the response was YES. [2023-08-26 06:59:15,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37878 conditions, 8960 events. 3639/8960 cut-off events. For 32136/32534 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 67765 event pairs, 412 based on Foata normal form. 111/8978 useless extension candidates. Maximal degree in co-relation 37793. Up to 2491 conditions per place. [2023-08-26 06:59:15,593 INFO L140 encePairwiseOnDemand]: 185/189 looper letters, 181 selfloop transitions, 23 changer transitions 0/395 dead transitions. [2023-08-26 06:59:15,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 395 transitions, 3765 flow [2023-08-26 06:59:15,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:59:15,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:59:15,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 725 transitions. [2023-08-26 06:59:15,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6393298059964727 [2023-08-26 06:59:15,595 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 725 transitions. [2023-08-26 06:59:15,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 725 transitions. [2023-08-26 06:59:15,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:15,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 725 transitions. [2023-08-26 06:59:15,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.83333333333333) internal successors, (725), 6 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:15,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:15,600 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:15,600 INFO L175 Difference]: Start difference. First operand has 143 places, 275 transitions, 2241 flow. Second operand 6 states and 725 transitions. [2023-08-26 06:59:15,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 395 transitions, 3765 flow [2023-08-26 06:59:15,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 395 transitions, 3740 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 06:59:15,683 INFO L231 Difference]: Finished difference. Result has 150 places, 284 transitions, 2403 flow [2023-08-26 06:59:15,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=2229, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2403, PETRI_PLACES=150, PETRI_TRANSITIONS=284} [2023-08-26 06:59:15,684 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 96 predicate places. [2023-08-26 06:59:15,684 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 284 transitions, 2403 flow [2023-08-26 06:59:15,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.85714285714286) internal successors, (783), 7 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:15,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:15,685 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:15,693 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 06:59:15,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-26 06:59:15,891 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:15,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:15,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1136700224, now seen corresponding path program 1 times [2023-08-26 06:59:15,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:15,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500016568] [2023-08-26 06:59:15,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:15,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:16,145 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-08-26 06:59:16,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:16,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500016568] [2023-08-26 06:59:16,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500016568] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:16,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:59:16,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 06:59:16,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620289786] [2023-08-26 06:59:16,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:16,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 06:59:16,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:16,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 06:59:16,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 06:59:16,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 189 [2023-08-26 06:59:16,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 284 transitions, 2403 flow. Second operand has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:16,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:16,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 189 [2023-08-26 06:59:16,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:18,514 INFO L124 PetriNetUnfolderBase]: 6750/13665 cut-off events. [2023-08-26 06:59:18,514 INFO L125 PetriNetUnfolderBase]: For 53084/53084 co-relation queries the response was YES. [2023-08-26 06:59:18,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64022 conditions, 13665 events. 6750/13665 cut-off events. For 53084/53084 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 94889 event pairs, 1353 based on Foata normal form. 122/13621 useless extension candidates. Maximal degree in co-relation 63935. Up to 10894 conditions per place. [2023-08-26 06:59:18,609 INFO L140 encePairwiseOnDemand]: 174/189 looper letters, 416 selfloop transitions, 100 changer transitions 4/521 dead transitions. [2023-08-26 06:59:18,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 521 transitions, 5623 flow [2023-08-26 06:59:18,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:59:18,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:59:18,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 623 transitions. [2023-08-26 06:59:18,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5493827160493827 [2023-08-26 06:59:18,612 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 623 transitions. [2023-08-26 06:59:18,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 623 transitions. [2023-08-26 06:59:18,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:18,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 623 transitions. [2023-08-26 06:59:18,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 103.83333333333333) internal successors, (623), 6 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:18,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:18,616 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:18,616 INFO L175 Difference]: Start difference. First operand has 150 places, 284 transitions, 2403 flow. Second operand 6 states and 623 transitions. [2023-08-26 06:59:18,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 521 transitions, 5623 flow [2023-08-26 06:59:18,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 521 transitions, 5459 flow, removed 65 selfloop flow, removed 1 redundant places. [2023-08-26 06:59:18,726 INFO L231 Difference]: Finished difference. Result has 159 places, 343 transitions, 3439 flow [2023-08-26 06:59:18,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=2367, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3439, PETRI_PLACES=159, PETRI_TRANSITIONS=343} [2023-08-26 06:59:18,727 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 105 predicate places. [2023-08-26 06:59:18,727 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 343 transitions, 3439 flow [2023-08-26 06:59:18,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:18,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:18,728 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:18,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 06:59:18,728 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:18,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:18,728 INFO L85 PathProgramCache]: Analyzing trace with hash -778794686, now seen corresponding path program 1 times [2023-08-26 06:59:18,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:18,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109307343] [2023-08-26 06:59:18,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:18,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:19,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:19,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109307343] [2023-08-26 06:59:19,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109307343] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:19,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811431714] [2023-08-26 06:59:19,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:19,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:19,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:19,369 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 06:59:19,377 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 06:59:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:19,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-26 06:59:19,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:19,786 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 06:59:19,824 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-26 06:59:19,867 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-26 06:59:19,917 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-26 06:59:19,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,976 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-26 06:59:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:20,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 06:59:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:20,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811431714] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 06:59:20,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 06:59:20,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-26 06:59:20,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788675057] [2023-08-26 06:59:20,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 06:59:20,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-26 06:59:20,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:20,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-26 06:59:20,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=767, Unknown=0, NotChecked=0, Total=930 [2023-08-26 06:59:20,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 189 [2023-08-26 06:59:20,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 343 transitions, 3439 flow. Second operand has 31 states, 31 states have (on average 51.32258064516129) internal successors, (1591), 31 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:20,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:20,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 189 [2023-08-26 06:59:20,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:27,237 INFO L124 PetriNetUnfolderBase]: 12664/25458 cut-off events. [2023-08-26 06:59:27,237 INFO L125 PetriNetUnfolderBase]: For 122991/122991 co-relation queries the response was YES. [2023-08-26 06:59:27,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130103 conditions, 25458 events. 12664/25458 cut-off events. For 122991/122991 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 199261 event pairs, 2040 based on Foata normal form. 88/25198 useless extension candidates. Maximal degree in co-relation 130011. Up to 10811 conditions per place. [2023-08-26 06:59:27,445 INFO L140 encePairwiseOnDemand]: 167/189 looper letters, 1326 selfloop transitions, 168 changer transitions 9/1503 dead transitions. [2023-08-26 06:59:27,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 1503 transitions, 16750 flow [2023-08-26 06:59:27,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-26 06:59:27,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-26 06:59:27,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1355 transitions. [2023-08-26 06:59:27,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3982951205173427 [2023-08-26 06:59:27,448 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1355 transitions. [2023-08-26 06:59:27,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1355 transitions. [2023-08-26 06:59:27,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:27,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1355 transitions. [2023-08-26 06:59:27,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 75.27777777777777) internal successors, (1355), 18 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:27,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:27,456 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:27,456 INFO L175 Difference]: Start difference. First operand has 159 places, 343 transitions, 3439 flow. Second operand 18 states and 1355 transitions. [2023-08-26 06:59:27,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 1503 transitions, 16750 flow [2023-08-26 06:59:27,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 1503 transitions, 16402 flow, removed 174 selfloop flow, removed 0 redundant places. [2023-08-26 06:59:27,763 INFO L231 Difference]: Finished difference. Result has 189 places, 479 transitions, 5811 flow [2023-08-26 06:59:27,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=3299, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5811, PETRI_PLACES=189, PETRI_TRANSITIONS=479} [2023-08-26 06:59:27,764 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 135 predicate places. [2023-08-26 06:59:27,764 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 479 transitions, 5811 flow [2023-08-26 06:59:27,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 51.32258064516129) internal successors, (1591), 31 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:27,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:27,765 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:27,774 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 06:59:27,971 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,SelfDestructingSolverStorable14 [2023-08-26 06:59:27,971 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:27,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:27,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1649868107, now seen corresponding path program 1 times [2023-08-26 06:59:27,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:27,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333658904] [2023-08-26 06:59:27,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:27,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:28,625 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:28,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:28,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333658904] [2023-08-26 06:59:28,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333658904] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:28,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925370470] [2023-08-26 06:59:28,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:28,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:28,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:28,627 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 06:59:28,630 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 06:59:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:28,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-26 06:59:28,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:29,169 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 06:59:29,209 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-26 06:59:29,255 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-26 06:59:29,320 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-26 06:59:29,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:29,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:29,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:29,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:29,380 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-26 06:59:29,415 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:29,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 06:59:30,248 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:30,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925370470] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 06:59:30,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 06:59:30,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-26 06:59:30,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83613948] [2023-08-26 06:59:30,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 06:59:30,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-26 06:59:30,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:30,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-26 06:59:30,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2023-08-26 06:59:30,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 189 [2023-08-26 06:59:30,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 479 transitions, 5811 flow. Second operand has 31 states, 31 states have (on average 49.32258064516129) internal successors, (1529), 31 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:30,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:30,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 189 [2023-08-26 06:59:30,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:39,303 INFO L124 PetriNetUnfolderBase]: 13655/27440 cut-off events. [2023-08-26 06:59:39,303 INFO L125 PetriNetUnfolderBase]: For 179504/179504 co-relation queries the response was YES. [2023-08-26 06:59:39,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150921 conditions, 27440 events. 13655/27440 cut-off events. For 179504/179504 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 217454 event pairs, 2752 based on Foata normal form. 52/27144 useless extension candidates. Maximal degree in co-relation 150814. Up to 15917 conditions per place. [2023-08-26 06:59:39,647 INFO L140 encePairwiseOnDemand]: 168/189 looper letters, 1001 selfloop transitions, 181 changer transitions 2/1184 dead transitions. [2023-08-26 06:59:39,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 1184 transitions, 14699 flow [2023-08-26 06:59:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 06:59:39,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 06:59:39,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1116 transitions. [2023-08-26 06:59:39,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3473389355742297 [2023-08-26 06:59:39,650 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1116 transitions. [2023-08-26 06:59:39,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1116 transitions. [2023-08-26 06:59:39,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:39,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1116 transitions. [2023-08-26 06:59:39,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 65.6470588235294) internal successors, (1116), 17 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:39,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 189.0) internal successors, (3402), 18 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:39,658 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 189.0) internal successors, (3402), 18 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:39,658 INFO L175 Difference]: Start difference. First operand has 189 places, 479 transitions, 5811 flow. Second operand 17 states and 1116 transitions. [2023-08-26 06:59:39,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 1184 transitions, 14699 flow [2023-08-26 06:59:40,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 1184 transitions, 14634 flow, removed 32 selfloop flow, removed 1 redundant places. [2023-08-26 06:59:40,274 INFO L231 Difference]: Finished difference. Result has 214 places, 617 transitions, 8337 flow [2023-08-26 06:59:40,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=5758, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8337, PETRI_PLACES=214, PETRI_TRANSITIONS=617} [2023-08-26 06:59:40,275 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 160 predicate places. [2023-08-26 06:59:40,276 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 617 transitions, 8337 flow [2023-08-26 06:59:40,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 49.32258064516129) internal successors, (1529), 31 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:40,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:40,276 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:40,282 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 06:59:40,477 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,SelfDestructingSolverStorable15 [2023-08-26 06:59:40,477 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:40,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:40,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1552358000, now seen corresponding path program 2 times [2023-08-26 06:59:40,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:40,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762966343] [2023-08-26 06:59:40,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:40,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:41,595 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:41,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:41,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762966343] [2023-08-26 06:59:41,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762966343] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:41,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830751001] [2023-08-26 06:59:41,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 06:59:41,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:41,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:41,601 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 06:59:41,603 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 06:59:41,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 06:59:41,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 06:59:41,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-26 06:59:41,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:41,980 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 06:59:42,010 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-26 06:59:42,046 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-26 06:59:42,089 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-26 06:59:42,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:42,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:42,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:42,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:42,218 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-26 06:59:42,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:42,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:42,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:42,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:42,242 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-26 06:59:42,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:42,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:42,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:42,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:42,267 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-26 06:59:42,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:42,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:42,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:42,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:42,287 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-26 06:59:42,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:42,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:42,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:42,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:42,356 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-26 06:59:42,388 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:42,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 06:59:57,721 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:57,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830751001] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 06:59:57,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 06:59:57,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 32 [2023-08-26 06:59:57,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279023091] [2023-08-26 06:59:57,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 06:59:57,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-26 06:59:57,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:57,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-26 06:59:57,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=865, Unknown=3, NotChecked=0, Total=1056 [2023-08-26 06:59:57,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 189 [2023-08-26 06:59:57,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 617 transitions, 8337 flow. Second operand has 33 states, 33 states have (on average 51.121212121212125) internal successors, (1687), 33 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:57,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:57,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 189 [2023-08-26 06:59:57,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:00:23,213 INFO L124 PetriNetUnfolderBase]: 27620/55449 cut-off events. [2023-08-26 07:00:23,213 INFO L125 PetriNetUnfolderBase]: For 407096/407096 co-relation queries the response was YES. [2023-08-26 07:00:23,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315747 conditions, 55449 events. 27620/55449 cut-off events. For 407096/407096 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 495108 event pairs, 3818 based on Foata normal form. 125/54672 useless extension candidates. Maximal degree in co-relation 315629. Up to 13100 conditions per place. [2023-08-26 07:00:24,193 INFO L140 encePairwiseOnDemand]: 166/189 looper letters, 2694 selfloop transitions, 572 changer transitions 17/3283 dead transitions. [2023-08-26 07:00:24,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 3283 transitions, 42314 flow [2023-08-26 07:00:24,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-26 07:00:24,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-26 07:00:24,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2566 transitions. [2023-08-26 07:00:24,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114157447490781 [2023-08-26 07:00:24,199 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2566 transitions. [2023-08-26 07:00:24,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2566 transitions. [2023-08-26 07:00:24,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:00:24,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2566 transitions. [2023-08-26 07:00:24,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 77.75757575757575) internal successors, (2566), 33 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:24,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 189.0) internal successors, (6426), 34 states have internal predecessors, (6426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:24,214 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 189.0) internal successors, (6426), 34 states have internal predecessors, (6426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:24,214 INFO L175 Difference]: Start difference. First operand has 214 places, 617 transitions, 8337 flow. Second operand 33 states and 2566 transitions. [2023-08-26 07:00:24,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 3283 transitions, 42314 flow [2023-08-26 07:00:27,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 3283 transitions, 41982 flow, removed 128 selfloop flow, removed 2 redundant places. [2023-08-26 07:00:27,224 INFO L231 Difference]: Finished difference. Result has 267 places, 1063 transitions, 17886 flow [2023-08-26 07:00:27,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=8209, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=17886, PETRI_PLACES=267, PETRI_TRANSITIONS=1063} [2023-08-26 07:00:27,225 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 213 predicate places. [2023-08-26 07:00:27,225 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 1063 transitions, 17886 flow [2023-08-26 07:00:27,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 51.121212121212125) internal successors, (1687), 33 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:27,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:00:27,226 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:00:27,232 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 07:00:27,431 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,SelfDestructingSolverStorable16 [2023-08-26 07:00:27,431 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 07:00:27,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:00:27,432 INFO L85 PathProgramCache]: Analyzing trace with hash -127161741, now seen corresponding path program 2 times [2023-08-26 07:00:27,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:00:27,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111056612] [2023-08-26 07:00:27,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:00:27,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:00:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:00:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:00:27,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:00:27,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111056612] [2023-08-26 07:00:27,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111056612] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:00:27,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604068846] [2023-08-26 07:00:27,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 07:00:27,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:00:27,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:00:27,994 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 07:00:27,997 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 07:00:28,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 07:00:28,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 07:00:28,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-26 07:00:28,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:00:28,425 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 07:00:28,466 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-26 07:00:28,515 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-26 07:00:28,570 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-26 07:00:28,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:28,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:28,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:28,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:28,690 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-26 07:00:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:00:28,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:00:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:00:39,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604068846] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:00:39,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:00:39,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-26 07:00:39,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739630150] [2023-08-26 07:00:39,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:00:39,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-26 07:00:39,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:00:39,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-26 07:00:39,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=741, Unknown=0, NotChecked=0, Total=930 [2023-08-26 07:00:39,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 189 [2023-08-26 07:00:39,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 1063 transitions, 17886 flow. Second operand has 31 states, 31 states have (on average 49.32258064516129) internal successors, (1529), 31 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:39,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:00:39,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 189 [2023-08-26 07:00:39,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:01:01,510 INFO L124 PetriNetUnfolderBase]: 28861/57931 cut-off events. [2023-08-26 07:01:01,510 INFO L125 PetriNetUnfolderBase]: For 586271/586271 co-relation queries the response was YES. [2023-08-26 07:01:02,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359245 conditions, 57931 events. 28861/57931 cut-off events. For 586271/586271 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 519941 event pairs, 7088 based on Foata normal form. 26/57055 useless extension candidates. Maximal degree in co-relation 359103. Up to 30563 conditions per place. [2023-08-26 07:01:02,782 INFO L140 encePairwiseOnDemand]: 168/189 looper letters, 1375 selfloop transitions, 335 changer transitions 1/1711 dead transitions. [2023-08-26 07:01:02,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 1711 transitions, 28445 flow [2023-08-26 07:01:02,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-26 07:01:02,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-26 07:01:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1058 transitions. [2023-08-26 07:01:02,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3498677248677249 [2023-08-26 07:01:02,785 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1058 transitions. [2023-08-26 07:01:02,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1058 transitions. [2023-08-26 07:01:02,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:01:02,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1058 transitions. [2023-08-26 07:01:02,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 66.125) internal successors, (1058), 16 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:02,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 189.0) internal successors, (3213), 17 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:02,790 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 189.0) internal successors, (3213), 17 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:02,790 INFO L175 Difference]: Start difference. First operand has 267 places, 1063 transitions, 17886 flow. Second operand 16 states and 1058 transitions. [2023-08-26 07:01:02,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 1711 transitions, 28445 flow [2023-08-26 07:01:08,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 1711 transitions, 27865 flow, removed 190 selfloop flow, removed 5 redundant places. [2023-08-26 07:01:08,686 INFO L231 Difference]: Finished difference. Result has 286 places, 1193 transitions, 20693 flow [2023-08-26 07:01:08,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=17429, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1063, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=765, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=20693, PETRI_PLACES=286, PETRI_TRANSITIONS=1193} [2023-08-26 07:01:08,687 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 232 predicate places. [2023-08-26 07:01:08,687 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 1193 transitions, 20693 flow [2023-08-26 07:01:08,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 49.32258064516129) internal successors, (1529), 31 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:08,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:01:08,687 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:01:08,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-26 07:01:08,887 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,SelfDestructingSolverStorable17 [2023-08-26 07:01:08,888 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 07:01:08,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:01:08,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1057352890, now seen corresponding path program 3 times [2023-08-26 07:01:08,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:01:08,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650595044] [2023-08-26 07:01:08,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:01:08,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:01:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:01:09,487 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:01:09,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:01:09,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650595044] [2023-08-26 07:01:09,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650595044] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:01:09,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582393899] [2023-08-26 07:01:09,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 07:01:09,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:01:09,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:01:09,489 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 07:01:09,496 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 07:01:09,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-26 07:01:09,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 07:01:09,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-26 07:01:09,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:01:09,705 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-26 07:01:09,856 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 07:01:09,856 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 11 [2023-08-26 07:01:09,903 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 07:01:09,944 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-26 07:01:09,998 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-26 07:01:10,058 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-26 07:01:10,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:01:10,122 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-26 07:01:10,160 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 07:01:10,160 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:01:10,885 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 07:01:10,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582393899] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 07:01:10,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 07:01:10,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 9] total 27 [2023-08-26 07:01:10,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412854266] [2023-08-26 07:01:10,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:01:10,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-26 07:01:10,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:01:10,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-26 07:01:10,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2023-08-26 07:01:10,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 189 [2023-08-26 07:01:10,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 1193 transitions, 20693 flow. Second operand has 10 states, 10 states have (on average 58.6) internal successors, (586), 10 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:10,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:01:10,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 189 [2023-08-26 07:01:10,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:01:50,100 INFO L124 PetriNetUnfolderBase]: 45253/90755 cut-off events. [2023-08-26 07:01:50,100 INFO L125 PetriNetUnfolderBase]: For 972011/972011 co-relation queries the response was YES. [2023-08-26 07:01:51,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577121 conditions, 90755 events. 45253/90755 cut-off events. For 972011/972011 co-relation queries the response was YES. Maximal size of possible extension queue 1173. Compared 871932 event pairs, 4416 based on Foata normal form. 44/89495 useless extension candidates. Maximal degree in co-relation 576970. Up to 31832 conditions per place. [2023-08-26 07:01:52,270 INFO L140 encePairwiseOnDemand]: 170/189 looper letters, 1771 selfloop transitions, 1466 changer transitions 6/3243 dead transitions. [2023-08-26 07:01:52,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 3243 transitions, 58181 flow [2023-08-26 07:01:52,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-26 07:01:52,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-26 07:01:52,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1398 transitions. [2023-08-26 07:01:52,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4109347442680776 [2023-08-26 07:01:52,273 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1398 transitions. [2023-08-26 07:01:52,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1398 transitions. [2023-08-26 07:01:52,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:01:52,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1398 transitions. [2023-08-26 07:01:52,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 77.66666666666667) internal successors, (1398), 18 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:52,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:52,279 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:52,279 INFO L175 Difference]: Start difference. First operand has 286 places, 1193 transitions, 20693 flow. Second operand 18 states and 1398 transitions. [2023-08-26 07:01:52,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 3243 transitions, 58181 flow [2023-08-26 07:02:05,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 3243 transitions, 57278 flow, removed 272 selfloop flow, removed 5 redundant places. [2023-08-26 07:02:05,129 INFO L231 Difference]: Finished difference. Result has 313 places, 2182 transitions, 44241 flow [2023-08-26 07:02:05,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=20342, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=538, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=44241, PETRI_PLACES=313, PETRI_TRANSITIONS=2182} [2023-08-26 07:02:05,131 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 259 predicate places. [2023-08-26 07:02:05,131 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 2182 transitions, 44241 flow [2023-08-26 07:02:05,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 58.6) internal successors, (586), 10 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:05,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:02:05,131 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:02:05,135 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 07:02:05,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:02:05,332 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 07:02:05,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:02:05,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1822754385, now seen corresponding path program 3 times [2023-08-26 07:02:05,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:02:05,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606222552] [2023-08-26 07:02:05,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:02:05,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:02:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:02:05,896 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:02:05,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:02:05,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606222552] [2023-08-26 07:02:05,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606222552] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:02:05,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757822387] [2023-08-26 07:02:05,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 07:02:05,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:02:05,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:02:05,898 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 07:02:05,900 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 07:02:06,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 07:02:06,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 07:02:06,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-26 07:02:06,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:02:06,384 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 07:02:06,422 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-26 07:02:06,463 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-26 07:02:06,518 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-26 07:02:06,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:02:06,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:02:06,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:02:06,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:02:06,637 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-26 07:02:06,665 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:02:06,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:02:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:02:16,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757822387] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:02:16,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:02:16,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-26 07:02:16,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079556738] [2023-08-26 07:02:16,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:02:16,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-26 07:02:16,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:02:16,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-26 07:02:16,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=814, Unknown=2, NotChecked=0, Total=992 [2023-08-26 07:02:16,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 189 [2023-08-26 07:02:16,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 2182 transitions, 44241 flow. Second operand has 32 states, 32 states have (on average 49.21875) internal successors, (1575), 32 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:16,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:02:16,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 189 [2023-08-26 07:02:16,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:03:32,476 INFO L124 PetriNetUnfolderBase]: 61231/122839 cut-off events. [2023-08-26 07:03:32,476 INFO L125 PetriNetUnfolderBase]: For 1678445/1678445 co-relation queries the response was YES. [2023-08-26 07:03:35,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 844144 conditions, 122839 events. 61231/122839 cut-off events. For 1678445/1678445 co-relation queries the response was YES. Maximal size of possible extension queue 1347. Compared 1170932 event pairs, 16288 based on Foata normal form. 50/121221 useless extension candidates. Maximal degree in co-relation 843980. Up to 75940 conditions per place. [2023-08-26 07:03:35,830 INFO L140 encePairwiseOnDemand]: 167/189 looper letters, 3488 selfloop transitions, 1119 changer transitions 0/4607 dead transitions. [2023-08-26 07:03:35,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 4607 transitions, 90769 flow [2023-08-26 07:03:35,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-26 07:03:35,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-26 07:03:35,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1964 transitions. [2023-08-26 07:03:35,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3583287721218756 [2023-08-26 07:03:35,832 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1964 transitions. [2023-08-26 07:03:35,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1964 transitions. [2023-08-26 07:03:35,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:03:35,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1964 transitions. [2023-08-26 07:03:35,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 67.72413793103448) internal successors, (1964), 29 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:03:35,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 189.0) internal successors, (5670), 30 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:03:35,839 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 189.0) internal successors, (5670), 30 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:03:35,839 INFO L175 Difference]: Start difference. First operand has 313 places, 2182 transitions, 44241 flow. Second operand 29 states and 1964 transitions. [2023-08-26 07:03:35,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 4607 transitions, 90769 flow [2023-08-26 07:04:00,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 4607 transitions, 88516 flow, removed 1125 selfloop flow, removed 1 redundant places. [2023-08-26 07:04:00,877 INFO L231 Difference]: Finished difference. Result has 361 places, 2876 transitions, 61343 flow [2023-08-26 07:04:00,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=43376, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=505, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=61343, PETRI_PLACES=361, PETRI_TRANSITIONS=2876} [2023-08-26 07:04:00,878 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 307 predicate places. [2023-08-26 07:04:00,878 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 2876 transitions, 61343 flow [2023-08-26 07:04:00,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 49.21875) internal successors, (1575), 32 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:04:00,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:04:00,879 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:04:00,883 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 07:04:01,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:04:01,080 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 07:04:01,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:04:01,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1897455422, now seen corresponding path program 1 times [2023-08-26 07:04:01,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:04:01,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570574120] [2023-08-26 07:04:01,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:04:01,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:04:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:04:01,577 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:04:01,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:04:01,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570574120] [2023-08-26 07:04:01,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570574120] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:04:01,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808914697] [2023-08-26 07:04:01,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:04:01,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:04:01,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:04:01,579 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 07:04:01,580 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 07:04:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:04:01,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-26 07:04:01,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:04:01,956 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 07:04:01,989 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-26 07:04:02,034 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-26 07:04:02,075 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-26 07:04:02,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:04:02,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:04:02,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:04:02,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:04:02,195 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-26 07:04:02,230 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:04:02,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:04:10,872 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:04:10,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808914697] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:04:10,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:04:10,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-26 07:04:10,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730751463] [2023-08-26 07:04:10,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:04:10,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-26 07:04:10,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:04:10,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-26 07:04:10,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=814, Unknown=3, NotChecked=0, Total=992 [2023-08-26 07:04:10,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 189 [2023-08-26 07:04:10,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 2876 transitions, 61343 flow. Second operand has 32 states, 32 states have (on average 49.21875) internal successors, (1575), 32 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:04:10,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:04:10,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 189 [2023-08-26 07:04:10,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:06:08,996 INFO L124 PetriNetUnfolderBase]: 72973/146450 cut-off events. [2023-08-26 07:06:08,996 INFO L125 PetriNetUnfolderBase]: For 2159642/2159642 co-relation queries the response was YES. [2023-08-26 07:06:13,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1047944 conditions, 146450 events. 72973/146450 cut-off events. For 2159642/2159642 co-relation queries the response was YES. Maximal size of possible extension queue 1647. Compared 1443352 event pairs, 17253 based on Foata normal form. 143/144398 useless extension candidates. Maximal degree in co-relation 1047758. Up to 79209 conditions per place. [2023-08-26 07:06:15,081 INFO L140 encePairwiseOnDemand]: 159/189 looper letters, 5079 selfloop transitions, 658 changer transitions 17/5754 dead transitions. [2023-08-26 07:06:15,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 5754 transitions, 116353 flow [2023-08-26 07:06:15,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-26 07:06:15,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-26 07:06:15,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2214 transitions. [2023-08-26 07:06:15,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4039408866995074 [2023-08-26 07:06:15,088 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2214 transitions. [2023-08-26 07:06:15,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2214 transitions. [2023-08-26 07:06:15,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:06:15,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2214 transitions. [2023-08-26 07:06:15,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 76.34482758620689) internal successors, (2214), 29 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:06:15,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 189.0) internal successors, (5670), 30 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:06:15,100 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 189.0) internal successors, (5670), 30 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:06:15,100 INFO L175 Difference]: Start difference. First operand has 361 places, 2876 transitions, 61343 flow. Second operand 29 states and 2214 transitions. [2023-08-26 07:06:15,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 5754 transitions, 116353 flow [2023-08-26 07:07:01,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 5754 transitions, 114607 flow, removed 790 selfloop flow, removed 2 redundant places. [2023-08-26 07:07:01,609 INFO L231 Difference]: Finished difference. Result has 410 places, 3408 transitions, 71467 flow [2023-08-26 07:07:01,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=59987, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2876, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=71467, PETRI_PLACES=410, PETRI_TRANSITIONS=3408} [2023-08-26 07:07:01,611 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 356 predicate places. [2023-08-26 07:07:01,611 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 3408 transitions, 71467 flow [2023-08-26 07:07:01,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 49.21875) internal successors, (1575), 32 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:07:01,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:07:01,612 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:07:01,620 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 07:07:01,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:07:01,820 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 07:07:01,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:07:01,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1993949795, now seen corresponding path program 1 times [2023-08-26 07:07:01,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:07:01,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764001037] [2023-08-26 07:07:01,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:07:01,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:07:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:07:02,372 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:07:02,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:07:02,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764001037] [2023-08-26 07:07:02,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764001037] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:07:02,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073619808] [2023-08-26 07:07:02,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:07:02,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:07:02,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:07:02,377 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 07:07:02,381 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 07:07:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:07:02,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-26 07:07:02,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:07:02,872 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 07:07:02,910 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-26 07:07:02,954 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-08-26 07:07:02,995 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-08-26 07:07:03,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:07:03,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:07:03,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:07:03,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:07:03,040 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2023-08-26 07:07:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:07:03,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:07:03,741 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:07:03,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073619808] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:07:03,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:07:03,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-26 07:07:03,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123948750] [2023-08-26 07:07:03,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:07:03,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-26 07:07:03,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:07:03,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-26 07:07:03,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2023-08-26 07:07:03,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 189 [2023-08-26 07:07:03,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 3408 transitions, 71467 flow. Second operand has 32 states, 32 states have (on average 49.21875) internal successors, (1575), 32 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:07:03,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:07:03,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 189 [2023-08-26 07:07:03,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand