/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_04-funloop_hard1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 06:58:57,121 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 06:58:57,207 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 06:58:57,211 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 06:58:57,211 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 06:58:57,243 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 06:58:57,244 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 06:58:57,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 06:58:57,245 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 06:58:57,249 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 06:58:57,249 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 06:58:57,249 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 06:58:57,250 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 06:58:57,251 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 06:58:57,251 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 06:58:57,251 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 06:58:57,251 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 06:58:57,251 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 06:58:57,252 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 06:58:57,252 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 06:58:57,252 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 06:58:57,253 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 06:58:57,253 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 06:58:57,254 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 06:58:57,254 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 06:58:57,254 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 06:58:57,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 06:58:57,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 06:58:57,255 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 06:58:57,255 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 06:58:57,256 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 06:58:57,256 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 06:58:57,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 06:58:57,256 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 06:58:57,256 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 06:58:57,257 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 06:58:57,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 06:58:57,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 06:58:57,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 06:58:57,596 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 06:58:57,596 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 06:58:57,597 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_04-funloop_hard1.i [2023-08-26 06:58:58,910 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 06:58:59,263 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 06:58:59,264 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_04-funloop_hard1.i [2023-08-26 06:58:59,285 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25d24f522/4f8bc1b06c2c4848849cdd9ea8ba834d/FLAGc53a60b08 [2023-08-26 06:58:59,301 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25d24f522/4f8bc1b06c2c4848849cdd9ea8ba834d [2023-08-26 06:58:59,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 06:58:59,307 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 06:58:59,310 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 06:58:59,310 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 06:58:59,313 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 06:58:59,314 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:58:59" (1/1) ... [2023-08-26 06:58:59,315 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ab52a32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:59, skipping insertion in model container [2023-08-26 06:58:59,315 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:58:59" (1/1) ... [2023-08-26 06:58:59,366 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 06:58:59,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 06:58:59,798 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 06:58:59,811 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 06:58:59,813 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 06:58:59,821 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-26 06:58:59,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 06:58:59,885 INFO L206 MainTranslator]: Completed translation [2023-08-26 06:58:59,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:59 WrapperNode [2023-08-26 06:58:59,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 06:58:59,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 06:58:59,886 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 06:58:59,886 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 06:58:59,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:59" (1/1) ... [2023-08-26 06:58:59,906 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:59" (1/1) ... [2023-08-26 06:58:59,939 INFO L138 Inliner]: procedures = 262, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 116 [2023-08-26 06:58:59,940 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 06:58:59,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 06:58:59,940 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 06:58:59,940 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 06:58:59,947 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:59" (1/1) ... [2023-08-26 06:58:59,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:59" (1/1) ... [2023-08-26 06:58:59,952 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:59" (1/1) ... [2023-08-26 06:58:59,953 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:59" (1/1) ... [2023-08-26 06:58:59,962 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:59" (1/1) ... [2023-08-26 06:58:59,965 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:59" (1/1) ... [2023-08-26 06:58:59,966 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:59" (1/1) ... [2023-08-26 06:58:59,968 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:59" (1/1) ... [2023-08-26 06:58:59,970 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 06:58:59,971 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 06:58:59,971 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 06:58:59,971 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 06:58:59,972 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:59" (1/1) ... [2023-08-26 06:58:59,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 06:59:00,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:00,031 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 06:59:00,051 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 06:59:00,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 06:59:00,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 06:59:00,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 06:59:00,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 06:59:00,062 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 06:59:00,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 06:59:00,062 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 06:59:00,062 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 06:59:00,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 06:59:00,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 06:59:00,064 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 06:59:00,238 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 06:59:00,239 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 06:59:00,534 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 06:59:00,540 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 06:59:00,540 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-26 06:59:00,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:59:00 BoogieIcfgContainer [2023-08-26 06:59:00,542 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 06:59:00,544 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 06:59:00,544 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 06:59:00,546 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 06:59:00,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:58:59" (1/3) ... [2023-08-26 06:59:00,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e63141e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:59:00, skipping insertion in model container [2023-08-26 06:59:00,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:59" (2/3) ... [2023-08-26 06:59:00,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e63141e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:59:00, skipping insertion in model container [2023-08-26 06:59:00,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:59:00" (3/3) ... [2023-08-26 06:59:00,551 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_04-funloop_hard1.i [2023-08-26 06:59:00,567 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 06:59:00,567 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-26 06:59:00,568 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 06:59:00,640 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 06:59:00,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 123 transitions, 251 flow [2023-08-26 06:59:00,746 INFO L124 PetriNetUnfolderBase]: 6/122 cut-off events. [2023-08-26 06:59:00,746 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:59:00,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 122 events. 6/122 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 223 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2023-08-26 06:59:00,752 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 123 transitions, 251 flow [2023-08-26 06:59:00,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 122 transitions, 247 flow [2023-08-26 06:59:00,762 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 06:59:00,774 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 122 transitions, 247 flow [2023-08-26 06:59:00,777 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 122 transitions, 247 flow [2023-08-26 06:59:00,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 122 transitions, 247 flow [2023-08-26 06:59:00,812 INFO L124 PetriNetUnfolderBase]: 6/122 cut-off events. [2023-08-26 06:59:00,813 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:59:00,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 122 events. 6/122 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 223 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2023-08-26 06:59:00,818 INFO L119 LiptonReduction]: Number of co-enabled transitions 4588 [2023-08-26 06:59:02,420 INFO L134 LiptonReduction]: Checked pairs total: 13982 [2023-08-26 06:59:02,420 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-08-26 06:59:02,432 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 06:59:02,438 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;@5a077fb7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 06:59:02,439 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-26 06:59:02,444 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 06:59:02,444 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2023-08-26 06:59:02,444 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:59:02,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:02,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:02,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:02,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:02,449 INFO L85 PathProgramCache]: Analyzing trace with hash -307406795, now seen corresponding path program 1 times [2023-08-26 06:59:02,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:02,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506055891] [2023-08-26 06:59:02,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:02,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:02,650 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 06:59:02,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:02,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506055891] [2023-08-26 06:59:02,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506055891] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:02,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:59:02,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:59:02,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150131973] [2023-08-26 06:59:02,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:02,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:59:02,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:02,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:59:02,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:59:02,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 193 [2023-08-26 06:59:02,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:02,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:02,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 193 [2023-08-26 06:59:02,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:02,806 INFO L124 PetriNetUnfolderBase]: 106/409 cut-off events. [2023-08-26 06:59:02,806 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:59:02,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 409 events. 106/409 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2218 event pairs, 84 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 612. Up to 213 conditions per place. [2023-08-26 06:59:02,811 INFO L140 encePairwiseOnDemand]: 190/193 looper letters, 24 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-08-26 06:59:02,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 167 flow [2023-08-26 06:59:02,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:59:02,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:59:02,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2023-08-26 06:59:02,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6217616580310881 [2023-08-26 06:59:02,823 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 360 transitions. [2023-08-26 06:59:02,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 360 transitions. [2023-08-26 06:59:02,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:02,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 360 transitions. [2023-08-26 06:59:02,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:02,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:02,836 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:02,838 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 113 flow. Second operand 3 states and 360 transitions. [2023-08-26 06:59:02,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 167 flow [2023-08-26 06:59:02,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 06:59:02,843 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 124 flow [2023-08-26 06:59:02,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-08-26 06:59:02,847 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-08-26 06:59:02,848 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 124 flow [2023-08-26 06:59:02,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:02,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:02,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:02,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 06:59:02,849 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:02,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:02,849 INFO L85 PathProgramCache]: Analyzing trace with hash -196145994, now seen corresponding path program 1 times [2023-08-26 06:59:02,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:02,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496035390] [2023-08-26 06:59:02,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:02,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:02,934 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 06:59:02,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:02,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496035390] [2023-08-26 06:59:02,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496035390] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:02,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384047370] [2023-08-26 06:59:02,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:02,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:02,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:02,938 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 06:59:02,966 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 06:59:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:03,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 06:59:03,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:03,123 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 06:59:03,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 06:59:03,151 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 06:59:03,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384047370] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 06:59:03,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 06:59:03,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 06:59:03,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963091528] [2023-08-26 06:59:03,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 06:59:03,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 06:59:03,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:03,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 06:59:03,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 06:59:03,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 193 [2023-08-26 06:59:03,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 124 flow. Second operand has 7 states, 7 states have (on average 112.71428571428571) internal successors, (789), 7 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:03,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:03,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 193 [2023-08-26 06:59:03,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:03,288 INFO L124 PetriNetUnfolderBase]: 106/412 cut-off events. [2023-08-26 06:59:03,289 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:59:03,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 412 events. 106/412 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2218 event pairs, 84 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 631. Up to 213 conditions per place. [2023-08-26 06:59:03,293 INFO L140 encePairwiseOnDemand]: 190/193 looper letters, 24 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2023-08-26 06:59:03,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 194 flow [2023-08-26 06:59:03,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:59:03,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:59:03,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 698 transitions. [2023-08-26 06:59:03,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6027633851468048 [2023-08-26 06:59:03,299 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 698 transitions. [2023-08-26 06:59:03,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 698 transitions. [2023-08-26 06:59:03,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:03,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 698 transitions. [2023-08-26 06:59:03,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.33333333333333) internal successors, (698), 6 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:03,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:03,308 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:03,310 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 124 flow. Second operand 6 states and 698 transitions. [2023-08-26 06:59:03,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 194 flow [2023-08-26 06:59:03,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 190 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 06:59:03,314 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 156 flow [2023-08-26 06:59:03,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2023-08-26 06:59:03,320 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2023-08-26 06:59:03,321 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 156 flow [2023-08-26 06:59:03,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.71428571428571) internal successors, (789), 7 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:03,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:03,324 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:03,335 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 06:59:03,530 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 06:59:03,530 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:03,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:03,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1656156277, now seen corresponding path program 2 times [2023-08-26 06:59:03,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:03,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365893624] [2023-08-26 06:59:03,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:03,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:03,689 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 06:59:03,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:03,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365893624] [2023-08-26 06:59:03,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365893624] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:03,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850906388] [2023-08-26 06:59:03,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 06:59:03,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:03,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:03,692 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 06:59:03,720 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 06:59:03,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 06:59:03,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 06:59:03,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-26 06:59:03,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:03,816 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 06:59:03,835 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 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 06:59:03,859 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 06:59:03,860 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 32 [2023-08-26 06:59:03,902 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 06:59:03,902 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-08-26 06:59:03,929 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 06:59:03,929 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 06:59:03,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850906388] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:03,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 06:59:03,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-26 06:59:03,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572505825] [2023-08-26 06:59:03,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:03,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 06:59:03,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:03,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 06:59:03,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-08-26 06:59:03,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 193 [2023-08-26 06:59:03,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:03,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:03,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 193 [2023-08-26 06:59:03,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:04,361 INFO L124 PetriNetUnfolderBase]: 697/1398 cut-off events. [2023-08-26 06:59:04,361 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 06:59:04,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2823 conditions, 1398 events. 697/1398 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6835 event pairs, 438 based on Foata normal form. 0/1192 useless extension candidates. Maximal degree in co-relation 2790. Up to 1190 conditions per place. [2023-08-26 06:59:04,369 INFO L140 encePairwiseOnDemand]: 182/193 looper letters, 115 selfloop transitions, 22 changer transitions 0/137 dead transitions. [2023-08-26 06:59:04,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 137 transitions, 586 flow [2023-08-26 06:59:04,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:59:04,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:59:04,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 596 transitions. [2023-08-26 06:59:04,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5146804835924007 [2023-08-26 06:59:04,372 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 596 transitions. [2023-08-26 06:59:04,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 596 transitions. [2023-08-26 06:59:04,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:04,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 596 transitions. [2023-08-26 06:59:04,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.33333333333333) internal successors, (596), 6 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:04,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:04,377 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:04,377 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 156 flow. Second operand 6 states and 596 transitions. [2023-08-26 06:59:04,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 137 transitions, 586 flow [2023-08-26 06:59:04,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 137 transitions, 572 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-26 06:59:04,382 INFO L231 Difference]: Finished difference. Result has 74 places, 80 transitions, 292 flow [2023-08-26 06:59:04,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=74, PETRI_TRANSITIONS=80} [2023-08-26 06:59:04,384 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2023-08-26 06:59:04,384 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 80 transitions, 292 flow [2023-08-26 06:59:04,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:04,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:04,385 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:04,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 06:59:04,590 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 06:59:04,591 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:04,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:04,591 INFO L85 PathProgramCache]: Analyzing trace with hash 2126752866, now seen corresponding path program 1 times [2023-08-26 06:59:04,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:04,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415083855] [2023-08-26 06:59:04,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:04,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:04,655 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 06:59:04,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:04,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415083855] [2023-08-26 06:59:04,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415083855] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:04,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:59:04,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 06:59:04,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473157611] [2023-08-26 06:59:04,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:04,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:59:04,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:04,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:59:04,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:59:04,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 193 [2023-08-26 06:59:04,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 80 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:04,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:04,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 193 [2023-08-26 06:59:04,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:04,787 INFO L124 PetriNetUnfolderBase]: 271/933 cut-off events. [2023-08-26 06:59:04,787 INFO L125 PetriNetUnfolderBase]: For 97/101 co-relation queries the response was YES. [2023-08-26 06:59:04,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1881 conditions, 933 events. 271/933 cut-off events. For 97/101 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5556 event pairs, 106 based on Foata normal form. 0/876 useless extension candidates. Maximal degree in co-relation 1850. Up to 285 conditions per place. [2023-08-26 06:59:04,793 INFO L140 encePairwiseOnDemand]: 190/193 looper letters, 43 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2023-08-26 06:59:04,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 95 transitions, 418 flow [2023-08-26 06:59:04,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:59:04,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:59:04,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2023-08-26 06:59:04,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6442141623488774 [2023-08-26 06:59:04,795 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 373 transitions. [2023-08-26 06:59:04,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 373 transitions. [2023-08-26 06:59:04,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:04,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 373 transitions. [2023-08-26 06:59:04,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:04,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:04,798 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:04,798 INFO L175 Difference]: Start difference. First operand has 74 places, 80 transitions, 292 flow. Second operand 3 states and 373 transitions. [2023-08-26 06:59:04,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 95 transitions, 418 flow [2023-08-26 06:59:04,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 95 transitions, 418 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 06:59:04,804 INFO L231 Difference]: Finished difference. Result has 77 places, 81 transitions, 304 flow [2023-08-26 06:59:04,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=77, PETRI_TRANSITIONS=81} [2023-08-26 06:59:04,805 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2023-08-26 06:59:04,805 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 81 transitions, 304 flow [2023-08-26 06:59:04,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:04,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:04,805 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:04,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 06:59:04,806 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:04,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:04,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1507803411, now seen corresponding path program 1 times [2023-08-26 06:59:04,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:04,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734684082] [2023-08-26 06:59:04,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:04,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:04,911 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 06:59:04,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:04,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734684082] [2023-08-26 06:59:04,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734684082] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:04,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974627327] [2023-08-26 06:59:04,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:04,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:04,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:04,913 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 06:59:04,916 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 06:59:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:04,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 06:59:04,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:04,997 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 06:59:04,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 06:59:05,041 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 06:59:05,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974627327] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 06:59:05,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 06:59:05,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-26 06:59:05,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590537833] [2023-08-26 06:59:05,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 06:59:05,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 06:59:05,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:05,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 06:59:05,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-26 06:59:05,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 193 [2023-08-26 06:59:05,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 81 transitions, 304 flow. Second operand has 13 states, 13 states have (on average 112.38461538461539) internal successors, (1461), 13 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:05,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:05,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 193 [2023-08-26 06:59:05,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:05,180 INFO L124 PetriNetUnfolderBase]: 274/978 cut-off events. [2023-08-26 06:59:05,180 INFO L125 PetriNetUnfolderBase]: For 155/165 co-relation queries the response was YES. [2023-08-26 06:59:05,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1981 conditions, 978 events. 274/978 cut-off events. For 155/165 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5846 event pairs, 148 based on Foata normal form. 6/944 useless extension candidates. Maximal degree in co-relation 1924. Up to 459 conditions per place. [2023-08-26 06:59:05,187 INFO L140 encePairwiseOnDemand]: 190/193 looper letters, 26 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2023-08-26 06:59:05,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 414 flow [2023-08-26 06:59:05,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 06:59:05,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 06:59:05,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1373 transitions. [2023-08-26 06:59:05,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.592832469775475 [2023-08-26 06:59:05,191 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1373 transitions. [2023-08-26 06:59:05,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1373 transitions. [2023-08-26 06:59:05,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:05,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1373 transitions. [2023-08-26 06:59:05,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 114.41666666666667) internal successors, (1373), 12 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:05,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 193.0) internal successors, (2509), 13 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:05,200 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 193.0) internal successors, (2509), 13 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:05,200 INFO L175 Difference]: Start difference. First operand has 77 places, 81 transitions, 304 flow. Second operand 12 states and 1373 transitions. [2023-08-26 06:59:05,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 414 flow [2023-08-26 06:59:05,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 87 transitions, 412 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 06:59:05,206 INFO L231 Difference]: Finished difference. Result has 93 places, 87 transitions, 386 flow [2023-08-26 06:59:05,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=386, PETRI_PLACES=93, PETRI_TRANSITIONS=87} [2023-08-26 06:59:05,209 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 37 predicate places. [2023-08-26 06:59:05,209 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 87 transitions, 386 flow [2023-08-26 06:59:05,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 112.38461538461539) internal successors, (1461), 13 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:05,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:05,210 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:05,218 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 06:59:05,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:05,419 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:05,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:05,419 INFO L85 PathProgramCache]: Analyzing trace with hash -921228941, now seen corresponding path program 2 times [2023-08-26 06:59:05,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:05,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021277960] [2023-08-26 06:59:05,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:05,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:05,784 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 06:59:05,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:05,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021277960] [2023-08-26 06:59:05,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021277960] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:05,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:59:05,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 06:59:05,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024279434] [2023-08-26 06:59:05,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:05,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 06:59:05,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:05,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 06:59:05,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 06:59:05,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 193 [2023-08-26 06:59:05,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 87 transitions, 386 flow. Second operand has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:05,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:05,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 193 [2023-08-26 06:59:05,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:06,402 INFO L124 PetriNetUnfolderBase]: 1284/2578 cut-off events. [2023-08-26 06:59:06,403 INFO L125 PetriNetUnfolderBase]: For 738/738 co-relation queries the response was YES. [2023-08-26 06:59:06,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6324 conditions, 2578 events. 1284/2578 cut-off events. For 738/738 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 14122 event pairs, 479 based on Foata normal form. 0/2323 useless extension candidates. Maximal degree in co-relation 6243. Up to 1894 conditions per place. [2023-08-26 06:59:06,422 INFO L140 encePairwiseOnDemand]: 178/193 looper letters, 207 selfloop transitions, 46 changer transitions 0/253 dead transitions. [2023-08-26 06:59:06,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 253 transitions, 1418 flow [2023-08-26 06:59:06,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:59:06,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:59:06,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 656 transitions. [2023-08-26 06:59:06,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5664939550949913 [2023-08-26 06:59:06,425 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 656 transitions. [2023-08-26 06:59:06,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 656 transitions. [2023-08-26 06:59:06,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:06,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 656 transitions. [2023-08-26 06:59:06,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.33333333333333) internal successors, (656), 6 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:06,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:06,429 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:06,429 INFO L175 Difference]: Start difference. First operand has 93 places, 87 transitions, 386 flow. Second operand 6 states and 656 transitions. [2023-08-26 06:59:06,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 253 transitions, 1418 flow [2023-08-26 06:59:06,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 253 transitions, 1370 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-26 06:59:06,437 INFO L231 Difference]: Finished difference. Result has 98 places, 132 transitions, 692 flow [2023-08-26 06:59:06,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=692, PETRI_PLACES=98, PETRI_TRANSITIONS=132} [2023-08-26 06:59:06,438 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 42 predicate places. [2023-08-26 06:59:06,438 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 132 transitions, 692 flow [2023-08-26 06:59:06,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:06,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:06,438 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 06:59:06,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 06:59:06,439 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:06,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:06,439 INFO L85 PathProgramCache]: Analyzing trace with hash -864941956, now seen corresponding path program 1 times [2023-08-26 06:59:06,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:06,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462003721] [2023-08-26 06:59:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:06,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:06,750 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 06:59:06,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:06,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462003721] [2023-08-26 06:59:06,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462003721] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:06,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:59:06,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 06:59:06,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700461663] [2023-08-26 06:59:06,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:06,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 06:59:06,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:06,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 06:59:06,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 06:59:06,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 193 [2023-08-26 06:59:06,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 132 transitions, 692 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 06:59:06,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:06,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 193 [2023-08-26 06:59:06,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:07,385 INFO L124 PetriNetUnfolderBase]: 1468/2946 cut-off events. [2023-08-26 06:59:07,386 INFO L125 PetriNetUnfolderBase]: For 2067/2067 co-relation queries the response was YES. [2023-08-26 06:59:07,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8689 conditions, 2946 events. 1468/2946 cut-off events. For 2067/2067 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 16313 event pairs, 593 based on Foata normal form. 0/2710 useless extension candidates. Maximal degree in co-relation 8628. Up to 2556 conditions per place. [2023-08-26 06:59:07,416 INFO L140 encePairwiseOnDemand]: 178/193 looper letters, 163 selfloop transitions, 58 changer transitions 0/221 dead transitions. [2023-08-26 06:59:07,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 221 transitions, 1476 flow [2023-08-26 06:59:07,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:59:07,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:59:07,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 583 transitions. [2023-08-26 06:59:07,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034542314335061 [2023-08-26 06:59:07,419 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 583 transitions. [2023-08-26 06:59:07,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 583 transitions. [2023-08-26 06:59:07,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:07,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 583 transitions. [2023-08-26 06:59:07,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.16666666666667) internal successors, (583), 6 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:07,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:07,424 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:07,424 INFO L175 Difference]: Start difference. First operand has 98 places, 132 transitions, 692 flow. Second operand 6 states and 583 transitions. [2023-08-26 06:59:07,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 221 transitions, 1476 flow [2023-08-26 06:59:07,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 221 transitions, 1476 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 06:59:07,437 INFO L231 Difference]: Finished difference. Result has 108 places, 180 transitions, 1202 flow [2023-08-26 06:59:07,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1202, PETRI_PLACES=108, PETRI_TRANSITIONS=180} [2023-08-26 06:59:07,438 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 52 predicate places. [2023-08-26 06:59:07,438 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 180 transitions, 1202 flow [2023-08-26 06:59:07,439 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 06:59:07,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:07,439 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 06:59:07,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 06:59:07,439 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:07,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:07,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1258989738, now seen corresponding path program 1 times [2023-08-26 06:59:07,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:07,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295776552] [2023-08-26 06:59:07,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:07,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:07,797 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 06:59:07,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:07,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295776552] [2023-08-26 06:59:07,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295776552] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:07,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:59:07,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 06:59:07,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574805247] [2023-08-26 06:59:07,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:07,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 06:59:07,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:07,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 06:59:07,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 06:59:07,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 193 [2023-08-26 06:59:07,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 180 transitions, 1202 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 06:59:07,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:07,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 193 [2023-08-26 06:59:07,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:08,552 INFO L124 PetriNetUnfolderBase]: 1715/3440 cut-off events. [2023-08-26 06:59:08,552 INFO L125 PetriNetUnfolderBase]: For 4555/4555 co-relation queries the response was YES. [2023-08-26 06:59:08,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11874 conditions, 3440 events. 1715/3440 cut-off events. For 4555/4555 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 19972 event pairs, 521 based on Foata normal form. 0/3244 useless extension candidates. Maximal degree in co-relation 11808. Up to 2891 conditions per place. [2023-08-26 06:59:08,582 INFO L140 encePairwiseOnDemand]: 170/193 looper letters, 236 selfloop transitions, 103 changer transitions 8/347 dead transitions. [2023-08-26 06:59:08,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 347 transitions, 2642 flow [2023-08-26 06:59:08,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:59:08,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:59:08,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 643 transitions. [2023-08-26 06:59:08,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5552677029360967 [2023-08-26 06:59:08,584 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 643 transitions. [2023-08-26 06:59:08,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 643 transitions. [2023-08-26 06:59:08,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:08,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 643 transitions. [2023-08-26 06:59:08,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.16666666666667) internal successors, (643), 6 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:08,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:08,589 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:08,589 INFO L175 Difference]: Start difference. First operand has 108 places, 180 transitions, 1202 flow. Second operand 6 states and 643 transitions. [2023-08-26 06:59:08,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 347 transitions, 2642 flow [2023-08-26 06:59:08,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 347 transitions, 2578 flow, removed 32 selfloop flow, removed 0 redundant places. [2023-08-26 06:59:08,612 INFO L231 Difference]: Finished difference. Result has 118 places, 265 transitions, 2054 flow [2023-08-26 06:59:08,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2054, PETRI_PLACES=118, PETRI_TRANSITIONS=265} [2023-08-26 06:59:08,613 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 62 predicate places. [2023-08-26 06:59:08,613 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 265 transitions, 2054 flow [2023-08-26 06:59:08,613 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 06:59:08,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:08,614 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 06:59:08,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 06:59:08,614 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:08,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:08,614 INFO L85 PathProgramCache]: Analyzing trace with hash 205448697, now seen corresponding path program 1 times [2023-08-26 06:59:08,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:08,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207116021] [2023-08-26 06:59:08,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:08,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:09,197 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 06:59:09,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:09,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207116021] [2023-08-26 06:59:09,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207116021] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:09,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892874667] [2023-08-26 06:59:09,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:09,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:09,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:09,199 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 06:59:09,223 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 06:59:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:09,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-26 06:59:09,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:09,374 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 06:59:09,397 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 06:59:09,397 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 06:59:09,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892874667] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:09,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 06:59:09,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-26 06:59:09,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791061677] [2023-08-26 06:59:09,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:09,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 06:59:09,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:09,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 06:59:09,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-26 06:59:09,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 193 [2023-08-26 06:59:09,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 265 transitions, 2054 flow. Second operand has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:09,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:09,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 193 [2023-08-26 06:59:09,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:09,916 INFO L124 PetriNetUnfolderBase]: 1309/3130 cut-off events. [2023-08-26 06:59:09,916 INFO L125 PetriNetUnfolderBase]: For 6458/6596 co-relation queries the response was YES. [2023-08-26 06:59:09,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11731 conditions, 3130 events. 1309/3130 cut-off events. For 6458/6596 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 21178 event pairs, 214 based on Foata normal form. 18/3024 useless extension candidates. Maximal degree in co-relation 11660. Up to 1056 conditions per place. [2023-08-26 06:59:09,951 INFO L140 encePairwiseOnDemand]: 185/193 looper letters, 174 selfloop transitions, 12 changer transitions 0/334 dead transitions. [2023-08-26 06:59:09,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 334 transitions, 3030 flow [2023-08-26 06:59:09,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:59:09,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:59:09,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 556 transitions. [2023-08-26 06:59:09,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48013816925734026 [2023-08-26 06:59:09,953 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 556 transitions. [2023-08-26 06:59:09,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 556 transitions. [2023-08-26 06:59:09,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:09,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 556 transitions. [2023-08-26 06:59:09,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.66666666666667) internal successors, (556), 6 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:09,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:09,957 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:09,957 INFO L175 Difference]: Start difference. First operand has 118 places, 265 transitions, 2054 flow. Second operand 6 states and 556 transitions. [2023-08-26 06:59:09,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 334 transitions, 3030 flow [2023-08-26 06:59:10,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 334 transitions, 2884 flow, removed 73 selfloop flow, removed 0 redundant places. [2023-08-26 06:59:10,007 INFO L231 Difference]: Finished difference. Result has 126 places, 273 transitions, 2036 flow [2023-08-26 06:59:10,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=1940, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2036, PETRI_PLACES=126, PETRI_TRANSITIONS=273} [2023-08-26 06:59:10,008 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 70 predicate places. [2023-08-26 06:59:10,008 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 273 transitions, 2036 flow [2023-08-26 06:59:10,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:10,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:10,009 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 06:59:10,024 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 06:59:10,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:10,215 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:10,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:10,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1600309825, now seen corresponding path program 2 times [2023-08-26 06:59:10,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:10,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724351083] [2023-08-26 06:59:10,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:10,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:10,768 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 06:59:10,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:10,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724351083] [2023-08-26 06:59:10,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724351083] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:10,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669437149] [2023-08-26 06:59:10,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 06:59:10,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:10,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:10,770 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 06:59:10,772 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 06:59:10,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 06:59:10,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 06:59:10,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-26 06:59:10,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:10,900 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 06:59:10,942 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 06:59:10,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 06:59:10,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669437149] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:10,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 06:59:10,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-26 06:59:10,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144498602] [2023-08-26 06:59:10,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:10,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 06:59:10,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:10,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 06:59:10,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-08-26 06:59:10,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 193 [2023-08-26 06:59:10,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 273 transitions, 2036 flow. Second operand has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:10,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:10,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 193 [2023-08-26 06:59:10,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:11,941 INFO L124 PetriNetUnfolderBase]: 2657/6345 cut-off events. [2023-08-26 06:59:11,941 INFO L125 PetriNetUnfolderBase]: For 13313/13583 co-relation queries the response was YES. [2023-08-26 06:59:11,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24628 conditions, 6345 events. 2657/6345 cut-off events. For 13313/13583 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 48804 event pairs, 330 based on Foata normal form. 18/6147 useless extension candidates. Maximal degree in co-relation 24552. Up to 1531 conditions per place. [2023-08-26 06:59:12,000 INFO L140 encePairwiseOnDemand]: 185/193 looper letters, 304 selfloop transitions, 19 changer transitions 0/471 dead transitions. [2023-08-26 06:59:12,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 471 transitions, 3972 flow [2023-08-26 06:59:12,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:59:12,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:59:12,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 585 transitions. [2023-08-26 06:59:12,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5051813471502591 [2023-08-26 06:59:12,002 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 585 transitions. [2023-08-26 06:59:12,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 585 transitions. [2023-08-26 06:59:12,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:12,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 585 transitions. [2023-08-26 06:59:12,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.5) internal successors, (585), 6 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:12,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:12,006 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:12,006 INFO L175 Difference]: Start difference. First operand has 126 places, 273 transitions, 2036 flow. Second operand 6 states and 585 transitions. [2023-08-26 06:59:12,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 471 transitions, 3972 flow [2023-08-26 06:59:12,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 471 transitions, 3946 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 06:59:12,145 INFO L231 Difference]: Finished difference. Result has 131 places, 285 transitions, 2195 flow [2023-08-26 06:59:12,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=2022, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2195, PETRI_PLACES=131, PETRI_TRANSITIONS=285} [2023-08-26 06:59:12,146 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 75 predicate places. [2023-08-26 06:59:12,146 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 285 transitions, 2195 flow [2023-08-26 06:59:12,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:12,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:12,146 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 06:59:12,153 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 06:59:12,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-26 06:59:12,353 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 06:59:12,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:12,353 INFO L85 PathProgramCache]: Analyzing trace with hash -648742066, now seen corresponding path program 1 times [2023-08-26 06:59:12,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:12,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804156017] [2023-08-26 06:59:12,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:12,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:12,758 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 06:59:12,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:12,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804156017] [2023-08-26 06:59:12,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804156017] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:12,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166527553] [2023-08-26 06:59:12,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:12,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:12,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:12,759 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 06:59:12,762 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 06:59:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:12,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-26 06:59:12,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:12,933 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 06:59:12,975 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 06:59:12,975 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 06:59:12,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166527553] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:12,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 06:59:12,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-26 06:59:12,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334660918] [2023-08-26 06:59:12,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:12,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 06:59:12,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:12,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 06:59:12,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-08-26 06:59:12,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 193 [2023-08-26 06:59:12,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 285 transitions, 2195 flow. Second operand has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:12,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:12,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 193 [2023-08-26 06:59:12,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:13,927 INFO L124 PetriNetUnfolderBase]: 2359/5714 cut-off events. [2023-08-26 06:59:13,927 INFO L125 PetriNetUnfolderBase]: For 13239/13468 co-relation queries the response was YES. [2023-08-26 06:59:13,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22969 conditions, 5714 events. 2359/5714 cut-off events. For 13239/13468 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 43648 event pairs, 297 based on Foata normal form. 21/5530 useless extension candidates. Maximal degree in co-relation 22890. Up to 1492 conditions per place. [2023-08-26 06:59:13,987 INFO L140 encePairwiseOnDemand]: 186/193 looper letters, 306 selfloop transitions, 22 changer transitions 0/476 dead transitions. [2023-08-26 06:59:13,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 476 transitions, 4082 flow [2023-08-26 06:59:13,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 06:59:13,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 06:59:13,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 673 transitions. [2023-08-26 06:59:13,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4981495188749075 [2023-08-26 06:59:13,989 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 673 transitions. [2023-08-26 06:59:13,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 673 transitions. [2023-08-26 06:59:13,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:13,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 673 transitions. [2023-08-26 06:59:13,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:13,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:13,993 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:13,993 INFO L175 Difference]: Start difference. First operand has 131 places, 285 transitions, 2195 flow. Second operand 7 states and 673 transitions. [2023-08-26 06:59:13,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 476 transitions, 4082 flow [2023-08-26 06:59:14,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 476 transitions, 4079 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 06:59:14,073 INFO L231 Difference]: Finished difference. Result has 139 places, 288 transitions, 2288 flow [2023-08-26 06:59:14,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=2168, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2288, PETRI_PLACES=139, PETRI_TRANSITIONS=288} [2023-08-26 06:59:14,074 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 83 predicate places. [2023-08-26 06:59:14,074 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 288 transitions, 2288 flow [2023-08-26 06:59:14,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:14,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:14,074 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 06:59:14,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-26 06:59:14,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:14,280 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 06:59:14,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:14,281 INFO L85 PathProgramCache]: Analyzing trace with hash -399232869, now seen corresponding path program 3 times [2023-08-26 06:59:14,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:14,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593099901] [2023-08-26 06:59:14,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:14,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:14,663 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 06:59:14,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:14,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593099901] [2023-08-26 06:59:14,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593099901] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:14,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286396482] [2023-08-26 06:59:14,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 06:59:14,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:14,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:14,664 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 06:59:14,667 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 06:59:14,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-26 06:59:14,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 06:59:14,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-26 06:59:14,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:14,807 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 06:59:14,843 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 06:59:14,843 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 06:59:14,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286396482] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:14,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 06:59:14,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-26 06:59:14,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806780719] [2023-08-26 06:59:14,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:14,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 06:59:14,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:14,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 06:59:14,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-26 06:59:14,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 193 [2023-08-26 06:59:14,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 288 transitions, 2288 flow. Second operand has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:14,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:14,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 193 [2023-08-26 06:59:14,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:15,668 INFO L124 PetriNetUnfolderBase]: 2387/5685 cut-off events. [2023-08-26 06:59:15,668 INFO L125 PetriNetUnfolderBase]: For 14789/15044 co-relation queries the response was YES. [2023-08-26 06:59:15,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23094 conditions, 5685 events. 2387/5685 cut-off events. For 14789/15044 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 43807 event pairs, 449 based on Foata normal form. 29/5479 useless extension candidates. Maximal degree in co-relation 23011. Up to 2445 conditions per place. [2023-08-26 06:59:15,729 INFO L140 encePairwiseOnDemand]: 186/193 looper letters, 188 selfloop transitions, 17 changer transitions 0/353 dead transitions. [2023-08-26 06:59:15,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 353 transitions, 3287 flow [2023-08-26 06:59:15,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:59:15,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:59:15,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 554 transitions. [2023-08-26 06:59:15,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4784110535405872 [2023-08-26 06:59:15,731 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 554 transitions. [2023-08-26 06:59:15,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 554 transitions. [2023-08-26 06:59:15,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:15,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 554 transitions. [2023-08-26 06:59:15,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:15,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:15,735 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:15,735 INFO L175 Difference]: Start difference. First operand has 139 places, 288 transitions, 2288 flow. Second operand 6 states and 554 transitions. [2023-08-26 06:59:15,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 353 transitions, 3287 flow [2023-08-26 06:59:15,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 353 transitions, 3247 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-26 06:59:15,794 INFO L231 Difference]: Finished difference. Result has 143 places, 291 transitions, 2335 flow [2023-08-26 06:59:15,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=2209, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2335, PETRI_PLACES=143, PETRI_TRANSITIONS=291} [2023-08-26 06:59:15,795 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 87 predicate places. [2023-08-26 06:59:15,795 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 291 transitions, 2335 flow [2023-08-26 06:59:15,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:15,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:15,796 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, 1] [2023-08-26 06:59:15,812 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 06:59:16,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:16,001 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 06:59:16,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:16,002 INFO L85 PathProgramCache]: Analyzing trace with hash -167655919, now seen corresponding path program 1 times [2023-08-26 06:59:16,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:16,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102179078] [2023-08-26 06:59:16,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:16,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:16,056 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 06:59:16,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:16,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102179078] [2023-08-26 06:59:16,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102179078] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:16,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74049781] [2023-08-26 06:59:16,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:16,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:16,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:16,059 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 06:59:16,081 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 06:59:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:16,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 06:59:16,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:16,203 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 06:59:16,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 06:59:16,228 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 06:59:16,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74049781] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 06:59:16,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 06:59:16,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-26 06:59:16,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099907757] [2023-08-26 06:59:16,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 06:59:16,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 06:59:16,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:16,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 06:59:16,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 06:59:16,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 193 [2023-08-26 06:59:16,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 291 transitions, 2335 flow. Second operand has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:16,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:16,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 193 [2023-08-26 06:59:16,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:17,664 INFO L124 PetriNetUnfolderBase]: 3942/9649 cut-off events. [2023-08-26 06:59:17,664 INFO L125 PetriNetUnfolderBase]: For 27954/28308 co-relation queries the response was YES. [2023-08-26 06:59:17,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39815 conditions, 9649 events. 3942/9649 cut-off events. For 27954/28308 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 73687 event pairs, 412 based on Foata normal form. 125/9597 useless extension candidates. Maximal degree in co-relation 39730. Up to 2067 conditions per place. [2023-08-26 06:59:17,732 INFO L140 encePairwiseOnDemand]: 189/193 looper letters, 195 selfloop transitions, 23 changer transitions 0/424 dead transitions. [2023-08-26 06:59:17,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 424 transitions, 4057 flow [2023-08-26 06:59:17,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:59:17,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:59:17,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 745 transitions. [2023-08-26 06:59:17,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6433506044905009 [2023-08-26 06:59:17,734 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 745 transitions. [2023-08-26 06:59:17,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 745 transitions. [2023-08-26 06:59:17,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:17,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 745 transitions. [2023-08-26 06:59:17,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.16666666666667) internal successors, (745), 6 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:17,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:17,738 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:17,739 INFO L175 Difference]: Start difference. First operand has 143 places, 291 transitions, 2335 flow. Second operand 6 states and 745 transitions. [2023-08-26 06:59:17,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 424 transitions, 4057 flow [2023-08-26 06:59:17,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 424 transitions, 4029 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-26 06:59:17,837 INFO L231 Difference]: Finished difference. Result has 150 places, 300 transitions, 2501 flow [2023-08-26 06:59:17,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=2313, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2501, PETRI_PLACES=150, PETRI_TRANSITIONS=300} [2023-08-26 06:59:17,838 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 94 predicate places. [2023-08-26 06:59:17,838 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 300 transitions, 2501 flow [2023-08-26 06:59:17,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:17,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:17,839 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:17,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-26 06:59:18,044 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,SelfDestructingSolverStorable12 [2023-08-26 06:59:18,045 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 06:59:18,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:18,045 INFO L85 PathProgramCache]: Analyzing trace with hash 24325413, now seen corresponding path program 1 times [2023-08-26 06:59:18,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:18,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802467983] [2023-08-26 06:59:18,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:18,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:19,136 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:19,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:19,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802467983] [2023-08-26 06:59:19,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802467983] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:19,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714872263] [2023-08-26 06:59:19,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:19,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:19,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:19,137 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 06:59:19,140 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 06:59:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:19,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-26 06:59:19,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:19,463 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 06:59:19,496 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 06:59:19,539 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 06:59:19,593 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 06:59:19,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,826 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 06:59:19,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,863 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 06:59:19,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,897 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 06:59:19,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,929 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 06:59:19,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:19,994 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 06:59:20,029 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:20,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 06:59:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:21,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714872263] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 06:59:21,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 06:59:21,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 31 [2023-08-26 06:59:21,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804432822] [2023-08-26 06:59:21,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 06:59:21,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-26 06:59:21,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:21,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-26 06:59:21,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=794, Unknown=0, NotChecked=0, Total=992 [2023-08-26 06:59:21,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 193 [2023-08-26 06:59:21,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 300 transitions, 2501 flow. Second operand has 32 states, 32 states have (on average 52.21875) internal successors, (1671), 32 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:21,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:21,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 193 [2023-08-26 06:59:21,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:28,434 INFO L124 PetriNetUnfolderBase]: 7038/14177 cut-off events. [2023-08-26 06:59:28,435 INFO L125 PetriNetUnfolderBase]: For 47074/47074 co-relation queries the response was YES. [2023-08-26 06:59:28,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65914 conditions, 14177 events. 7038/14177 cut-off events. For 47074/47074 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 98111 event pairs, 788 based on Foata normal form. 14/13778 useless extension candidates. Maximal degree in co-relation 65827. Up to 5763 conditions per place. [2023-08-26 06:59:28,559 INFO L140 encePairwiseOnDemand]: 171/193 looper letters, 751 selfloop transitions, 120 changer transitions 14/885 dead transitions. [2023-08-26 06:59:28,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 885 transitions, 8869 flow [2023-08-26 06:59:28,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 06:59:28,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 06:59:28,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1055 transitions. [2023-08-26 06:59:28,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39045151739452255 [2023-08-26 06:59:28,563 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1055 transitions. [2023-08-26 06:59:28,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1055 transitions. [2023-08-26 06:59:28,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:28,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1055 transitions. [2023-08-26 06:59:28,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 75.35714285714286) internal successors, (1055), 14 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:28,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 193.0) internal successors, (2895), 15 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:28,570 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 193.0) internal successors, (2895), 15 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:28,570 INFO L175 Difference]: Start difference. First operand has 150 places, 300 transitions, 2501 flow. Second operand 14 states and 1055 transitions. [2023-08-26 06:59:28,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 885 transitions, 8869 flow [2023-08-26 06:59:28,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 885 transitions, 8677 flow, removed 78 selfloop flow, removed 1 redundant places. [2023-08-26 06:59:28,768 INFO L231 Difference]: Finished difference. Result has 173 places, 396 transitions, 4022 flow [2023-08-26 06:59:28,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=2463, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4022, PETRI_PLACES=173, PETRI_TRANSITIONS=396} [2023-08-26 06:59:28,770 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 117 predicate places. [2023-08-26 06:59:28,770 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 396 transitions, 4022 flow [2023-08-26 06:59:28,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 52.21875) internal successors, (1671), 32 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:28,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:28,771 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 06:59:28,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-26 06:59:28,977 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,SelfDestructingSolverStorable13 [2023-08-26 06:59:28,977 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 06:59:28,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:28,977 INFO L85 PathProgramCache]: Analyzing trace with hash 985556970, now seen corresponding path program 1 times [2023-08-26 06:59:28,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:28,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823625812] [2023-08-26 06:59:28,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:28,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:29,745 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 06:59:29,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:29,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823625812] [2023-08-26 06:59:29,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823625812] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:29,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247138861] [2023-08-26 06:59:29,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:29,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:29,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:29,749 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 06:59:29,778 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 06:59:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:29,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-26 06:59:29,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:30,196 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 06:59:30,235 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 06:59:30,278 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 06:59:30,329 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 06:59:30,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:30,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:30,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:30,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:30,391 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 06:59:30,427 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 06:59:30,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 06:59:31,305 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 06:59:31,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247138861] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 06:59:31,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 06:59:31,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-26 06:59:31,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509809929] [2023-08-26 06:59:31,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 06:59:31,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-26 06:59:31,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:31,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-26 06:59:31,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2023-08-26 06:59:31,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 193 [2023-08-26 06:59:31,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 396 transitions, 4022 flow. Second operand has 31 states, 31 states have (on average 52.32258064516129) internal successors, (1622), 31 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:31,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:31,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 193 [2023-08-26 06:59:31,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:39,533 INFO L124 PetriNetUnfolderBase]: 10326/20765 cut-off events. [2023-08-26 06:59:39,533 INFO L125 PetriNetUnfolderBase]: For 96951/96951 co-relation queries the response was YES. [2023-08-26 06:59:39,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104145 conditions, 20765 events. 10326/20765 cut-off events. For 96951/96951 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 155366 event pairs, 1808 based on Foata normal form. 97/20601 useless extension candidates. Maximal degree in co-relation 104045. Up to 10855 conditions per place. [2023-08-26 06:59:39,714 INFO L140 encePairwiseOnDemand]: 171/193 looper letters, 1069 selfloop transitions, 168 changer transitions 14/1251 dead transitions. [2023-08-26 06:59:39,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 1251 transitions, 13871 flow [2023-08-26 06:59:39,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 06:59:39,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 06:59:39,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1249 transitions. [2023-08-26 06:59:39,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806766229807985 [2023-08-26 06:59:39,717 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1249 transitions. [2023-08-26 06:59:39,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1249 transitions. [2023-08-26 06:59:39,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:39,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1249 transitions. [2023-08-26 06:59:39,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 73.47058823529412) internal successors, (1249), 17 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:39,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 193.0) internal successors, (3474), 18 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:39,726 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 193.0) internal successors, (3474), 18 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:39,726 INFO L175 Difference]: Start difference. First operand has 173 places, 396 transitions, 4022 flow. Second operand 17 states and 1249 transitions. [2023-08-26 06:59:39,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 1251 transitions, 13871 flow [2023-08-26 06:59:40,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 1251 transitions, 13808 flow, removed 28 selfloop flow, removed 2 redundant places. [2023-08-26 06:59:40,100 INFO L231 Difference]: Finished difference. Result has 199 places, 512 transitions, 6208 flow [2023-08-26 06:59:40,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=3983, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6208, PETRI_PLACES=199, PETRI_TRANSITIONS=512} [2023-08-26 06:59:40,101 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 143 predicate places. [2023-08-26 06:59:40,101 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 512 transitions, 6208 flow [2023-08-26 06:59:40,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 52.32258064516129) internal successors, (1622), 31 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:40,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:40,102 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 06:59:40,107 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 06:59:40,302 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 06:59:40,303 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 06:59:40,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:40,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1716370128, now seen corresponding path program 1 times [2023-08-26 06:59:40,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:40,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713570188] [2023-08-26 06:59:40,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:40,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:40,994 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 06:59:40,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:40,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713570188] [2023-08-26 06:59:40,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713570188] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:40,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684674820] [2023-08-26 06:59:40,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:40,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:40,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:40,996 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 06:59:40,997 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 06:59:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:41,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-26 06:59:41,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:41,425 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 06:59:41,462 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 06:59:41,504 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 06:59:41,555 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 06:59:41,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:41,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:41,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:41,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:41,607 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 06:59:41,645 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 06:59:41,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 06:59:42,414 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 06:59:42,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684674820] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 06:59:42,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 06:59:42,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-26 06:59:42,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431182952] [2023-08-26 06:59:42,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 06:59:42,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-26 06:59:42,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:42,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-26 06:59:42,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2023-08-26 06:59:42,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 193 [2023-08-26 06:59:42,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 512 transitions, 6208 flow. Second operand has 31 states, 31 states have (on average 50.32258064516129) internal successors, (1560), 31 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:42,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:42,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 193 [2023-08-26 06:59:42,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:49,888 INFO L124 PetriNetUnfolderBase]: 11317/22747 cut-off events. [2023-08-26 06:59:49,888 INFO L125 PetriNetUnfolderBase]: For 141646/141646 co-relation queries the response was YES. [2023-08-26 06:59:50,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122776 conditions, 22747 events. 11317/22747 cut-off events. For 141646/141646 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 173573 event pairs, 2149 based on Foata normal form. 52/22538 useless extension candidates. Maximal degree in co-relation 122664. Up to 11686 conditions per place. [2023-08-26 06:59:50,143 INFO L140 encePairwiseOnDemand]: 172/193 looper letters, 1013 selfloop transitions, 184 changer transitions 4/1201 dead transitions. [2023-08-26 06:59:50,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 1201 transitions, 15120 flow [2023-08-26 06:59:50,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 06:59:50,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 06:59:50,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1141 transitions. [2023-08-26 06:59:50,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3477598293203292 [2023-08-26 06:59:50,146 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1141 transitions. [2023-08-26 06:59:50,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1141 transitions. [2023-08-26 06:59:50,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:50,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1141 transitions. [2023-08-26 06:59:50,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.11764705882354) internal successors, (1141), 17 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:50,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 193.0) internal successors, (3474), 18 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:50,154 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 193.0) internal successors, (3474), 18 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:50,154 INFO L175 Difference]: Start difference. First operand has 199 places, 512 transitions, 6208 flow. Second operand 17 states and 1141 transitions. [2023-08-26 06:59:50,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 1201 transitions, 15120 flow [2023-08-26 06:59:50,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 1201 transitions, 15013 flow, removed 53 selfloop flow, removed 1 redundant places. [2023-08-26 06:59:50,818 INFO L231 Difference]: Finished difference. Result has 224 places, 648 transitions, 8728 flow [2023-08-26 06:59:50,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=6155, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8728, PETRI_PLACES=224, PETRI_TRANSITIONS=648} [2023-08-26 06:59:50,819 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 168 predicate places. [2023-08-26 06:59:50,819 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 648 transitions, 8728 flow [2023-08-26 06:59:50,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 50.32258064516129) internal successors, (1560), 31 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:50,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:50,820 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 06:59:50,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-26 06:59:51,026 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 06:59:51,026 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 06:59:51,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:51,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1834829114, now seen corresponding path program 2 times [2023-08-26 06:59:51,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:51,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079940395] [2023-08-26 06:59:51,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:51,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:51,948 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 06:59:51,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:51,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079940395] [2023-08-26 06:59:51,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079940395] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:51,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726417296] [2023-08-26 06:59:51,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 06:59:51,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:51,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:51,957 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 06:59:51,979 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 06:59:52,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 06:59:52,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 06:59:52,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-26 06:59:52,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:52,419 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 06:59:52,459 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 06:59:52,501 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 06:59:52,546 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 06:59:52,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:52,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:52,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:52,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:52,642 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 06:59:52,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:52,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:52,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:52,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:52,663 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 06:59:52,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:52,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:52,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:52,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:52,691 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 06:59:52,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:52,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:52,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:52,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:52,712 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 06:59:52,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:52,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:52,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:52,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 06:59:52,760 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 06:59:52,787 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 06:59:52,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 06:59:55,678 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 3))) (let ((.cse1 (store |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (select |c_#race| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) .cse3 0)))) (let ((.cse2 (select .cse1 |c_~#cache~0.base|)) (.cse0 (+ (* |c_ULTIMATE.start_main_~i~2#1| 28) |c_~#cache~0.offset|))) (and (forall ((|v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_47| Int)) (or (< |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_47| .cse0) (forall ((v_ArrVal_1433 Int) (v_ArrVal_1435 Int)) (= (select (select (store .cse1 |c_~#cache~0.base| (store (store .cse2 (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_47|) v_ArrVal_1433) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_47| v_ArrVal_1435)) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 2)) 0)))) (forall ((|v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_47| Int)) (or (forall ((v_ArrVal_1433 Int) (v_ArrVal_1435 Int)) (= (select (select (store .cse1 |c_~#cache~0.base| (store (store .cse2 (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_47|) v_ArrVal_1433) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_47| v_ArrVal_1435)) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) .cse3) 0)) (< |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_47| .cse0))) (forall ((|v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_47| Int)) (or (forall ((v_ArrVal_1433 Int) (v_ArrVal_1435 Int)) (= (select (select (store .cse1 |c_~#cache~0.base| (store (store .cse2 (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_47|) v_ArrVal_1433) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_47| v_ArrVal_1435)) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) (+ |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| 1)) 0)) (< |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_47| .cse0))) (forall ((|v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_47| Int)) (or (forall ((v_ArrVal_1433 Int) (v_ArrVal_1435 Int)) (= (select (select (store .cse1 |c_~#cache~0.base| (store (store .cse2 (+ 3 |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_47|) v_ArrVal_1433) |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_47| v_ArrVal_1435)) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 0)) (< |v_ULTIMATE.start_cache_entry_addref_~entry#1.offset_47| .cse0))))))) is different from false [2023-08-26 07:00:02,142 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 07:00:02,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726417296] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:00:02,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:00:02,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 31 [2023-08-26 07:00:02,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978886525] [2023-08-26 07:00:02,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:00:02,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-26 07:00:02,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:00:02,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-26 07:00:02,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=746, Unknown=3, NotChecked=58, Total=992 [2023-08-26 07:00:02,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 193 [2023-08-26 07:00:02,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 648 transitions, 8728 flow. Second operand has 32 states, 32 states have (on average 52.21875) internal successors, (1671), 32 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:02,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:00:02,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 193 [2023-08-26 07:00:02,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:00:16,142 INFO L124 PetriNetUnfolderBase]: 15632/31421 cut-off events. [2023-08-26 07:00:16,142 INFO L125 PetriNetUnfolderBase]: For 234438/234438 co-relation queries the response was YES. [2023-08-26 07:00:16,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179052 conditions, 31421 events. 15632/31421 cut-off events. For 234438/234438 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 254652 event pairs, 2429 based on Foata normal form. 74/31092 useless extension candidates. Maximal degree in co-relation 178929. Up to 11235 conditions per place. [2023-08-26 07:00:16,480 INFO L140 encePairwiseOnDemand]: 150/193 looper letters, 1219 selfloop transitions, 328 changer transitions 18/1565 dead transitions. [2023-08-26 07:00:16,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 1565 transitions, 20962 flow [2023-08-26 07:00:16,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 07:00:16,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 07:00:16,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1295 transitions. [2023-08-26 07:00:16,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39469673879914663 [2023-08-26 07:00:16,483 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1295 transitions. [2023-08-26 07:00:16,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1295 transitions. [2023-08-26 07:00:16,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:00:16,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1295 transitions. [2023-08-26 07:00:16,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 76.17647058823529) internal successors, (1295), 17 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:16,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 193.0) internal successors, (3474), 18 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:16,489 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 193.0) internal successors, (3474), 18 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:16,489 INFO L175 Difference]: Start difference. First operand has 224 places, 648 transitions, 8728 flow. Second operand 17 states and 1295 transitions. [2023-08-26 07:00:16,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 1565 transitions, 20962 flow [2023-08-26 07:00:18,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 1565 transitions, 20796 flow, removed 64 selfloop flow, removed 2 redundant places. [2023-08-26 07:00:18,235 INFO L231 Difference]: Finished difference. Result has 249 places, 814 transitions, 12461 flow [2023-08-26 07:00:18,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=8608, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=12461, PETRI_PLACES=249, PETRI_TRANSITIONS=814} [2023-08-26 07:00:18,236 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 193 predicate places. [2023-08-26 07:00:18,236 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 814 transitions, 12461 flow [2023-08-26 07:00:18,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 52.21875) internal successors, (1671), 32 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:18,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:00:18,237 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 07:00:18,245 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 07:00:18,442 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 07:00:18,442 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 07:00:18,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:00:18,443 INFO L85 PathProgramCache]: Analyzing trace with hash -858027458, now seen corresponding path program 2 times [2023-08-26 07:00:18,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:00:18,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984544342] [2023-08-26 07:00:18,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:00:18,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:00:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:00:18,962 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 07:00:18,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:00:18,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984544342] [2023-08-26 07:00:18,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984544342] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:00:18,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586341438] [2023-08-26 07:00:18,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 07:00:18,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:00:18,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:00:18,965 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 07:00:18,995 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 07:00:19,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 07:00:19,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 07:00:19,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-26 07:00:19,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:00:19,471 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 07:00:19,511 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 07:00:19,552 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 07:00:19,595 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 07:00:19,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:19,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:19,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:19,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:19,708 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 07:00:19,743 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 07:00:19,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:00:34,200 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 07:00:34,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586341438] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:00:34,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:00:34,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-26 07:00:34,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605431652] [2023-08-26 07:00:34,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:00:34,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-26 07:00:34,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:00:34,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-26 07:00:34,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=740, Unknown=6, NotChecked=0, Total=930 [2023-08-26 07:00:34,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 193 [2023-08-26 07:00:34,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 814 transitions, 12461 flow. Second operand has 31 states, 31 states have (on average 50.32258064516129) internal successors, (1560), 31 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:34,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:00:34,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 193 [2023-08-26 07:00:34,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:00:47,924 INFO L124 PetriNetUnfolderBase]: 16853/33875 cut-off events. [2023-08-26 07:00:47,924 INFO L125 PetriNetUnfolderBase]: For 341754/341754 co-relation queries the response was YES. [2023-08-26 07:00:48,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214379 conditions, 33875 events. 16853/33875 cut-off events. For 341754/341754 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 279260 event pairs, 3686 based on Foata normal form. 26/33506 useless extension candidates. Maximal degree in co-relation 214244. Up to 19306 conditions per place. [2023-08-26 07:00:48,474 INFO L140 encePairwiseOnDemand]: 172/193 looper letters, 1120 selfloop transitions, 297 changer transitions 2/1419 dead transitions. [2023-08-26 07:00:48,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 1419 transitions, 21967 flow [2023-08-26 07:00:48,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-26 07:00:48,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-26 07:00:48,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1080 transitions. [2023-08-26 07:00:48,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34974093264248707 [2023-08-26 07:00:48,476 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1080 transitions. [2023-08-26 07:00:48,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1080 transitions. [2023-08-26 07:00:48,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:00:48,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1080 transitions. [2023-08-26 07:00:48,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.5) internal successors, (1080), 16 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:48,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 193.0) internal successors, (3281), 17 states have internal predecessors, (3281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:48,480 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 193.0) internal successors, (3281), 17 states have internal predecessors, (3281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:48,480 INFO L175 Difference]: Start difference. First operand has 249 places, 814 transitions, 12461 flow. Second operand 16 states and 1080 transitions. [2023-08-26 07:00:48,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 1419 transitions, 21967 flow [2023-08-26 07:00:51,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 1419 transitions, 21525 flow, removed 103 selfloop flow, removed 5 redundant places. [2023-08-26 07:00:51,363 INFO L231 Difference]: Finished difference. Result has 268 places, 945 transitions, 15380 flow [2023-08-26 07:00:51,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=12136, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=814, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=15380, PETRI_PLACES=268, PETRI_TRANSITIONS=945} [2023-08-26 07:00:51,364 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 212 predicate places. [2023-08-26 07:00:51,364 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 945 transitions, 15380 flow [2023-08-26 07:00:51,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 50.32258064516129) internal successors, (1560), 31 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:51,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:00:51,365 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 07:00:51,371 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 07:00:51,569 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 07:00:51,569 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 07:00:51,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:00:51,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1668155084, now seen corresponding path program 3 times [2023-08-26 07:00:51,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:00:51,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371404063] [2023-08-26 07:00:51,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:00:51,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:00:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:00:52,496 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 07:00:52,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:00:52,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371404063] [2023-08-26 07:00:52,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371404063] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:00:52,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819123739] [2023-08-26 07:00:52,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 07:00:52,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:00:52,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:00:52,501 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 07:00:52,504 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 07:00:52,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 07:00:52,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 07:00:52,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-26 07:00:52,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:00:52,887 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 07:00:52,917 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 07:00:52,954 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 26 treesize of output 28 [2023-08-26 07:00:52,996 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 07:00:53,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:53,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:53,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:53,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:53,102 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 07:00:53,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:53,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:53,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:53,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:53,123 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 07:00:53,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:53,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:53,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:53,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:53,148 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 07:00:53,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:53,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:53,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:53,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:53,175 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 07:00:53,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:53,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:53,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:53,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:00:53,222 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 07:00:53,258 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 07:00:53,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:01:09,790 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 07:01:09,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819123739] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:01:09,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:01:09,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 32 [2023-08-26 07:01:09,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909502573] [2023-08-26 07:01:09,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:01:09,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-26 07:01:09,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:01:09,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-26 07:01:09,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=870, Unknown=5, NotChecked=0, Total=1056 [2023-08-26 07:01:09,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 193 [2023-08-26 07:01:09,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 945 transitions, 15380 flow. Second operand has 33 states, 33 states have (on average 52.121212121212125) internal successors, (1720), 33 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:09,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:01:09,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 193 [2023-08-26 07:01:09,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:01:38,250 INFO L124 PetriNetUnfolderBase]: 30561/61361 cut-off events. [2023-08-26 07:01:38,250 INFO L125 PetriNetUnfolderBase]: For 675250/675250 co-relation queries the response was YES. [2023-08-26 07:01:39,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395486 conditions, 61361 events. 30561/61361 cut-off events. For 675250/675250 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 554474 event pairs, 4292 based on Foata normal form. 103/60565 useless extension candidates. Maximal degree in co-relation 395342. Up to 17081 conditions per place. [2023-08-26 07:01:39,624 INFO L140 encePairwiseOnDemand]: 171/193 looper letters, 2684 selfloop transitions, 804 changer transitions 32/3520 dead transitions. [2023-08-26 07:01:39,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 3520 transitions, 54859 flow [2023-08-26 07:01:39,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-26 07:01:39,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-26 07:01:39,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2371 transitions. [2023-08-26 07:01:39,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40949913644214164 [2023-08-26 07:01:39,628 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2371 transitions. [2023-08-26 07:01:39,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2371 transitions. [2023-08-26 07:01:39,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:01:39,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2371 transitions. [2023-08-26 07:01:39,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 79.03333333333333) internal successors, (2371), 30 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:39,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 193.0) internal successors, (5983), 31 states have internal predecessors, (5983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:39,638 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 193.0) internal successors, (5983), 31 states have internal predecessors, (5983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:39,638 INFO L175 Difference]: Start difference. First operand has 268 places, 945 transitions, 15380 flow. Second operand 30 states and 2371 transitions. [2023-08-26 07:01:39,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 3520 transitions, 54859 flow [2023-08-26 07:01:47,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 3520 transitions, 54229 flow, removed 48 selfloop flow, removed 5 redundant places. [2023-08-26 07:01:47,623 INFO L231 Difference]: Finished difference. Result has 313 places, 1508 transitions, 29623 flow [2023-08-26 07:01:47,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=15167, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=945, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=29623, PETRI_PLACES=313, PETRI_TRANSITIONS=1508} [2023-08-26 07:01:47,625 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 257 predicate places. [2023-08-26 07:01:47,625 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 1508 transitions, 29623 flow [2023-08-26 07:01:47,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 52.121212121212125) internal successors, (1720), 33 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:47,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:01:47,626 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 07:01:47,631 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 07:01:47,826 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 07:01:47,826 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 07:01:47,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:01:47,827 INFO L85 PathProgramCache]: Analyzing trace with hash 261043352, now seen corresponding path program 3 times [2023-08-26 07:01:47,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:01:47,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382992227] [2023-08-26 07:01:47,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:01:47,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:01:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:01:48,329 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 07:01:48,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:01:48,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382992227] [2023-08-26 07:01:48,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382992227] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:01:48,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495810374] [2023-08-26 07:01:48,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 07:01:48,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:01:48,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:01:48,331 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 07:01:48,332 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 07:01:48,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 07:01:48,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 07:01:48,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-26 07:01:48,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:01:48,723 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 07:01:48,758 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 07:01:48,793 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 07:01:48,842 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 07:01:48,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:01:48,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:01:48,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:01:48,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:01:48,938 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 07:01:48,967 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 07:01:48,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:01:58,617 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 07:01:58,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495810374] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:01:58,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:01:58,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-26 07:01:58,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764336130] [2023-08-26 07:01:58,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:01:58,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-26 07:01:58,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:01:58,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-26 07:01:58,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=814, Unknown=2, NotChecked=0, Total=992 [2023-08-26 07:01:58,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 193 [2023-08-26 07:01:58,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 1508 transitions, 29623 flow. Second operand has 32 states, 32 states have (on average 50.21875) internal successors, (1607), 32 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:58,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:01:58,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 193 [2023-08-26 07:01:58,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:02:38,092 INFO L124 PetriNetUnfolderBase]: 38499/77336 cut-off events. [2023-08-26 07:02:38,092 INFO L125 PetriNetUnfolderBase]: For 1100955/1100955 co-relation queries the response was YES. [2023-08-26 07:02:40,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 533420 conditions, 77336 events. 38499/77336 cut-off events. For 1100955/1100955 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 691141 event pairs, 11045 based on Foata normal form. 29/76256 useless extension candidates. Maximal degree in co-relation 533255. Up to 53052 conditions per place. [2023-08-26 07:02:40,486 INFO L140 encePairwiseOnDemand]: 171/193 looper letters, 2636 selfloop transitions, 574 changer transitions 0/3210 dead transitions. [2023-08-26 07:02:40,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 3210 transitions, 58251 flow [2023-08-26 07:02:40,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-26 07:02:40,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-26 07:02:40,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2003 transitions. [2023-08-26 07:02:40,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3578702876541004 [2023-08-26 07:02:40,489 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2003 transitions. [2023-08-26 07:02:40,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2003 transitions. [2023-08-26 07:02:40,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:02:40,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2003 transitions. [2023-08-26 07:02:40,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 69.06896551724138) internal successors, (2003), 29 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:40,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 193.0) internal successors, (5790), 30 states have internal predecessors, (5790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:40,499 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 193.0) internal successors, (5790), 30 states have internal predecessors, (5790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:40,499 INFO L175 Difference]: Start difference. First operand has 313 places, 1508 transitions, 29623 flow. Second operand 29 states and 2003 transitions. [2023-08-26 07:02:40,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 3210 transitions, 58251 flow [2023-08-26 07:02:52,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 3210 transitions, 57505 flow, removed 178 selfloop flow, removed 6 redundant places. [2023-08-26 07:02:52,574 INFO L231 Difference]: Finished difference. Result has 356 places, 1867 transitions, 37840 flow [2023-08-26 07:02:52,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=29039, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=37840, PETRI_PLACES=356, PETRI_TRANSITIONS=1867} [2023-08-26 07:02:52,575 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 300 predicate places. [2023-08-26 07:02:52,575 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 1867 transitions, 37840 flow [2023-08-26 07:02:52,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 50.21875) internal successors, (1607), 32 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:52,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:02:52,575 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 07:02:52,580 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 07:02:52,776 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 07:02:52,776 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 07:02:52,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:02:52,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1999520674, now seen corresponding path program 1 times [2023-08-26 07:02:52,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:02:52,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463555228] [2023-08-26 07:02:52,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:02:52,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:02:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:02:53,294 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 07:02:53,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:02:53,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463555228] [2023-08-26 07:02:53,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463555228] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:02:53,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586747221] [2023-08-26 07:02:53,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:02:53,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:02:53,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:02:53,296 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 07:02:53,298 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 07:02:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:02:53,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-26 07:02:53,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:02:53,743 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 07:02:53,774 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 07:02:53,807 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 07:02:53,850 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 07:02:53,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:02:53,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:02:53,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:02:53,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:02:53,965 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 07:02:53,996 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 07:02:53,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:03:04,483 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 07:03:04,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586747221] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:03:04,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:03:04,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-26 07:03:04,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838498844] [2023-08-26 07:03:04,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:03:04,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-26 07:03:04,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:03:04,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-26 07:03:04,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=813, Unknown=2, NotChecked=0, Total=992 [2023-08-26 07:03:04,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 193 [2023-08-26 07:03:04,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 1867 transitions, 37840 flow. Second operand has 32 states, 32 states have (on average 50.21875) internal successors, (1607), 32 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:03:04,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:03:04,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 193 [2023-08-26 07:03:04,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:04:01,230 INFO L124 PetriNetUnfolderBase]: 46346/93239 cut-off events. [2023-08-26 07:04:01,230 INFO L125 PetriNetUnfolderBase]: For 1478394/1478394 co-relation queries the response was YES. [2023-08-26 07:04:03,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673609 conditions, 93239 events. 46346/93239 cut-off events. For 1478394/1478394 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 866558 event pairs, 10986 based on Foata normal form. 164/91808 useless extension candidates. Maximal degree in co-relation 673423. Up to 40690 conditions per place. [2023-08-26 07:04:04,252 INFO L140 encePairwiseOnDemand]: 163/193 looper letters, 3600 selfloop transitions, 489 changer transitions 34/4123 dead transitions. [2023-08-26 07:04:04,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 4123 transitions, 76206 flow [2023-08-26 07:04:04,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-26 07:04:04,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-26 07:04:04,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2291 transitions. [2023-08-26 07:04:04,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40932642487046633 [2023-08-26 07:04:04,257 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2291 transitions. [2023-08-26 07:04:04,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2291 transitions. [2023-08-26 07:04:04,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:04:04,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2291 transitions. [2023-08-26 07:04:04,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 79.0) internal successors, (2291), 29 states have internal predecessors, (2291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:04:04,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 193.0) internal successors, (5790), 30 states have internal predecessors, (5790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:04:04,266 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 193.0) internal successors, (5790), 30 states have internal predecessors, (5790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:04:04,266 INFO L175 Difference]: Start difference. First operand has 356 places, 1867 transitions, 37840 flow. Second operand 29 states and 2291 transitions. [2023-08-26 07:04:04,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 4123 transitions, 76206 flow [2023-08-26 07:04:24,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 4123 transitions, 75549 flow, removed 328 selfloop flow, removed 1 redundant places. [2023-08-26 07:04:24,456 INFO L231 Difference]: Finished difference. Result has 406 places, 2291 transitions, 45894 flow [2023-08-26 07:04:24,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=37305, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1867, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=45894, PETRI_PLACES=406, PETRI_TRANSITIONS=2291} [2023-08-26 07:04:24,458 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 350 predicate places. [2023-08-26 07:04:24,458 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 2291 transitions, 45894 flow [2023-08-26 07:04:24,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 50.21875) internal successors, (1607), 32 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:04:24,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:04:24,459 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 07:04:24,469 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 07:04:24,665 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 07:04:24,665 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 07:04:24,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:04:24,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1768266610, now seen corresponding path program 4 times [2023-08-26 07:04:24,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:04:24,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015161088] [2023-08-26 07:04:24,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:04:24,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:04:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:04:25,186 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 07:04:25,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:04:25,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015161088] [2023-08-26 07:04:25,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015161088] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:04:25,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442175275] [2023-08-26 07:04:25,187 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 07:04:25,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:04:25,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:04:25,188 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 07:04:25,193 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 07:04:25,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 07:04:25,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 07:04:25,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-26 07:04:25,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:04:25,764 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 07:04:25,811 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 07:04:25,849 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 07:04:25,897 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 07:04:26,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:04:26,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:04:26,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:04:26,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:04:26,005 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 07:04:26,034 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 07:04:26,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:04:39,916 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 07:04:39,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442175275] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:04:39,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:04:39,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-26 07:04:39,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717200800] [2023-08-26 07:04:39,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:04:39,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-26 07:04:39,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:04:39,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-26 07:04:39,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=812, Unknown=6, NotChecked=0, Total=992 [2023-08-26 07:04:39,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 193 [2023-08-26 07:04:39,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 2291 transitions, 45894 flow. Second operand has 32 states, 32 states have (on average 50.21875) internal successors, (1607), 32 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:04:39,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:04:39,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 193 [2023-08-26 07:04:39,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:05:57,728 INFO L124 PetriNetUnfolderBase]: 55526/111698 cut-off events. [2023-08-26 07:05:57,729 INFO L125 PetriNetUnfolderBase]: For 2040459/2040459 co-relation queries the response was YES. [2023-08-26 07:06:01,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 870885 conditions, 111698 events. 55526/111698 cut-off events. For 2040459/2040459 co-relation queries the response was YES. Maximal size of possible extension queue 1245. Compared 1048522 event pairs, 14475 based on Foata normal form. 29/109922 useless extension candidates. Maximal degree in co-relation 870675. Up to 47058 conditions per place. [2023-08-26 07:06:01,969 INFO L140 encePairwiseOnDemand]: 172/193 looper letters, 3461 selfloop transitions, 1055 changer transitions 2/4518 dead transitions. [2023-08-26 07:06:01,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 4518 transitions, 90737 flow [2023-08-26 07:06:01,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-26 07:06:01,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-26 07:06:01,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2078 transitions. [2023-08-26 07:06:01,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35889464594127807 [2023-08-26 07:06:01,972 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2078 transitions. [2023-08-26 07:06:01,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2078 transitions. [2023-08-26 07:06:01,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:06:01,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2078 transitions. [2023-08-26 07:06:01,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 69.26666666666667) internal successors, (2078), 30 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:06:01,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 193.0) internal successors, (5983), 31 states have internal predecessors, (5983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:06:01,982 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 193.0) internal successors, (5983), 31 states have internal predecessors, (5983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:06:01,982 INFO L175 Difference]: Start difference. First operand has 406 places, 2291 transitions, 45894 flow. Second operand 30 states and 2078 transitions. [2023-08-26 07:06:01,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 4518 transitions, 90737 flow [2023-08-26 07:06:39,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 4518 transitions, 89788 flow, removed 474 selfloop flow, removed 1 redundant places. [2023-08-26 07:06:40,039 INFO L231 Difference]: Finished difference. Result has 454 places, 2854 transitions, 61760 flow [2023-08-26 07:06:40,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=45109, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=508, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=61760, PETRI_PLACES=454, PETRI_TRANSITIONS=2854} [2023-08-26 07:06:40,042 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 398 predicate places. [2023-08-26 07:06:40,042 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 2854 transitions, 61760 flow [2023-08-26 07:06:40,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 50.21875) internal successors, (1607), 32 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:06:40,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:06:40,042 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 07:06:40,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-08-26 07:06:40,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:06:40,248 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-26 07:06:40,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:06:40,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1935208014, now seen corresponding path program 1 times [2023-08-26 07:06:40,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:06:40,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372871841] [2023-08-26 07:06:40,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:06:40,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:06:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:06:40,794 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 07:06:40,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:06:40,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372871841] [2023-08-26 07:06:40,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372871841] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:06:40,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894786228] [2023-08-26 07:06:40,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:06:40,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:06:40,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:06:40,797 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:06:40,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-26 07:06:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:06:40,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-26 07:06:40,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:06:41,224 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 07:06:41,253 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 07:06:41,289 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 07:06:41,331 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 07:06:41,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:06:41,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:06:41,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:06:41,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:06:41,377 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 07:06:41,407 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 07:06:41,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:06:42,078 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 07:06:42,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894786228] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:06:42,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:06:42,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-26 07:06:42,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246100758] [2023-08-26 07:06:42,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:06:42,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-26 07:06:42,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:06:42,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-26 07:06:42,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2023-08-26 07:06:42,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 193 [2023-08-26 07:06:42,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 2854 transitions, 61760 flow. Second operand has 32 states, 32 states have (on average 52.21875) internal successors, (1671), 32 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:06:42,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:06:42,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 193 [2023-08-26 07:06:42,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand