/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_76-tricky_address3_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 04:13:19,651 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 04:13:19,727 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 [2023-08-25 04:13:19,735 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 04:13:19,736 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 04:13:19,774 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 04:13:19,774 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 04:13:19,779 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 04:13:19,780 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 04:13:19,781 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 04:13:19,781 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 04:13:19,782 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 04:13:19,782 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 04:13:19,782 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 04:13:19,782 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 04:13:19,783 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 04:13:19,783 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 04:13:19,783 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 04:13:19,783 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 04:13:19,784 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 04:13:19,784 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 04:13:19,788 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 04:13:19,788 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 04:13:19,788 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 04:13:19,788 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 04:13:19,789 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 04:13:19,789 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 04:13:19,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 04:13:19,789 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 04:13:19,789 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 04:13:19,790 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 04:13:19,790 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 04:13:19,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 04:13:19,790 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 04:13:19,790 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 04:13:19,791 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 04:13:20,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 04:13:20,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 04:13:20,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 04:13:20,120 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 04:13:20,121 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 04:13:20,122 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2023-08-25 04:13:21,301 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 04:13:21,532 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 04:13:21,532 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2023-08-25 04:13:21,551 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0806a6df0/c1d76900486d426eaaabc06b6136461a/FLAG448ecca72 [2023-08-25 04:13:21,565 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0806a6df0/c1d76900486d426eaaabc06b6136461a [2023-08-25 04:13:21,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 04:13:21,571 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 04:13:21,574 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 04:13:21,574 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 04:13:21,576 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 04:13:21,578 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 04:13:21" (1/1) ... [2023-08-25 04:13:21,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b6bc83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:21, skipping insertion in model container [2023-08-25 04:13:21,579 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 04:13:21" (1/1) ... [2023-08-25 04:13:21,631 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 04:13:22,078 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 04:13:22,104 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 04:13:22,132 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 04:13:22,134 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 04:13:22,147 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-25 04:13:22,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 04:13:22,312 INFO L206 MainTranslator]: Completed translation [2023-08-25 04:13:22,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:22 WrapperNode [2023-08-25 04:13:22,315 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 04:13:22,316 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 04:13:22,316 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 04:13:22,316 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 04:13:22,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:22" (1/1) ... [2023-08-25 04:13:22,353 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:22" (1/1) ... [2023-08-25 04:13:22,405 INFO L138 Inliner]: procedures = 270, calls = 42, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 265 [2023-08-25 04:13:22,405 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 04:13:22,406 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 04:13:22,406 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 04:13:22,406 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 04:13:22,415 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:22" (1/1) ... [2023-08-25 04:13:22,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:22" (1/1) ... [2023-08-25 04:13:22,435 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:22" (1/1) ... [2023-08-25 04:13:22,435 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:22" (1/1) ... [2023-08-25 04:13:22,454 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:22" (1/1) ... [2023-08-25 04:13:22,475 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:22" (1/1) ... [2023-08-25 04:13:22,477 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:22" (1/1) ... [2023-08-25 04:13:22,479 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:22" (1/1) ... [2023-08-25 04:13:22,482 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 04:13:22,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 04:13:22,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 04:13:22,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 04:13:22,489 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:22" (1/1) ... [2023-08-25 04:13:22,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 04:13:22,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:13:22,515 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) [2023-08-25 04:13:22,519 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 [2023-08-25 04:13:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 04:13:22,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 04:13:22,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 04:13:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 04:13:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 04:13:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 04:13:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-25 04:13:22,555 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-25 04:13:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 04:13:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 04:13:22,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 04:13:22,557 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 04:13:22,677 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 04:13:22,681 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 04:13:23,013 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 04:13:23,021 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 04:13:23,021 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-25 04:13:23,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 04:13:23 BoogieIcfgContainer [2023-08-25 04:13:23,024 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 04:13:23,025 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 04:13:23,026 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 04:13:23,028 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 04:13:23,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 04:13:21" (1/3) ... [2023-08-25 04:13:23,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63cf4336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 04:13:23, skipping insertion in model container [2023-08-25 04:13:23,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:22" (2/3) ... [2023-08-25 04:13:23,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63cf4336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 04:13:23, skipping insertion in model container [2023-08-25 04:13:23,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 04:13:23" (3/3) ... [2023-08-25 04:13:23,031 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_76-tricky_address3_racefree.i [2023-08-25 04:13:23,046 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 04:13:23,046 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-08-25 04:13:23,046 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 04:13:23,151 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-25 04:13:23,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 278 transitions, 564 flow [2023-08-25 04:13:23,366 INFO L124 PetriNetUnfolderBase]: 48/394 cut-off events. [2023-08-25 04:13:23,366 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 04:13:23,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 394 events. 48/394 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1614 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 230. Up to 8 conditions per place. [2023-08-25 04:13:23,376 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 278 transitions, 564 flow [2023-08-25 04:13:23,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 278 transitions, 564 flow [2023-08-25 04:13:23,387 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:13:23,395 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 248 places, 278 transitions, 564 flow [2023-08-25 04:13:23,397 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 248 places, 278 transitions, 564 flow [2023-08-25 04:13:23,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 278 transitions, 564 flow [2023-08-25 04:13:23,453 INFO L124 PetriNetUnfolderBase]: 48/394 cut-off events. [2023-08-25 04:13:23,454 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 04:13:23,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 394 events. 48/394 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1614 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 230. Up to 8 conditions per place. [2023-08-25 04:13:23,473 INFO L119 LiptonReduction]: Number of co-enabled transitions 26596 [2023-08-25 04:13:26,740 INFO L134 LiptonReduction]: Checked pairs total: 102196 [2023-08-25 04:13:26,741 INFO L136 LiptonReduction]: Total number of compositions: 187 [2023-08-25 04:13:26,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:13:26,774 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;@6a01fa29, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:13:26,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-25 04:13:26,780 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:13:26,780 INFO L124 PetriNetUnfolderBase]: 9/40 cut-off events. [2023-08-25 04:13:26,780 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:13:26,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:13:26,781 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-25 04:13:26,781 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 04:13:26,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:13:26,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1645977331, now seen corresponding path program 1 times [2023-08-25 04:13:26,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:13:26,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847040403] [2023-08-25 04:13:26,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:26,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:13:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:13:27,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 04:13:27,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:13:27,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847040403] [2023-08-25 04:13:27,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847040403] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:13:27,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:13:27,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:13:27,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449812993] [2023-08-25 04:13:27,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:13:27,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:13:27,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:13:27,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:13:27,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:13:27,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 465 [2023-08-25 04:13:27,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 134 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:27,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:13:27,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 465 [2023-08-25 04:13:27,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:13:27,378 INFO L124 PetriNetUnfolderBase]: 440/1647 cut-off events. [2023-08-25 04:13:27,378 INFO L125 PetriNetUnfolderBase]: For 5/7 co-relation queries the response was YES. [2023-08-25 04:13:27,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2514 conditions, 1647 events. 440/1647 cut-off events. For 5/7 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 12008 event pairs, 396 based on Foata normal form. 167/1600 useless extension candidates. Maximal degree in co-relation 2414. Up to 860 conditions per place. [2023-08-25 04:13:27,388 INFO L140 encePairwiseOnDemand]: 441/465 looper letters, 45 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2023-08-25 04:13:27,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 114 transitions, 330 flow [2023-08-25 04:13:27,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:13:27,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:13:27,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 780 transitions. [2023-08-25 04:13:27,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2023-08-25 04:13:27,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 780 transitions. [2023-08-25 04:13:27,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 780 transitions. [2023-08-25 04:13:27,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:13:27,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 780 transitions. [2023-08-25 04:13:27,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:27,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:27,420 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:27,422 INFO L175 Difference]: Start difference. First operand has 112 places, 134 transitions, 276 flow. Second operand 3 states and 780 transitions. [2023-08-25 04:13:27,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 114 transitions, 330 flow [2023-08-25 04:13:27,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 114 transitions, 330 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:13:27,428 INFO L231 Difference]: Finished difference. Result has 115 places, 114 transitions, 246 flow [2023-08-25 04:13:27,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=115, PETRI_TRANSITIONS=114} [2023-08-25 04:13:27,433 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 3 predicate places. [2023-08-25 04:13:27,433 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 114 transitions, 246 flow [2023-08-25 04:13:27,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:27,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:13:27,434 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-25 04:13:27,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 04:13:27,435 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 04:13:27,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:13:27,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1012218375, now seen corresponding path program 1 times [2023-08-25 04:13:27,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:13:27,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388934797] [2023-08-25 04:13:27,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:27,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:13:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:13:27,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 04:13:27,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:13:27,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388934797] [2023-08-25 04:13:27,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388934797] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:13:27,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703463817] [2023-08-25 04:13:27,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:27,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:13:27,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:13:27,548 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) [2023-08-25 04:13:27,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 04:13:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:13:27,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 04:13:27,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:13:27,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 04:13:27,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 04:13:27,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 04:13:27,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703463817] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 04:13:27,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 04:13:27,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-25 04:13:27,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436948573] [2023-08-25 04:13:27,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 04:13:27,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 04:13:27,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:13:27,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 04:13:27,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 04:13:27,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 465 [2023-08-25 04:13:27,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 114 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 238.57142857142858) internal successors, (1670), 7 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:27,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:13:27,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 465 [2023-08-25 04:13:27,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:13:27,946 INFO L124 PetriNetUnfolderBase]: 440/1650 cut-off events. [2023-08-25 04:13:27,946 INFO L125 PetriNetUnfolderBase]: For 5/7 co-relation queries the response was YES. [2023-08-25 04:13:27,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2530 conditions, 1650 events. 440/1650 cut-off events. For 5/7 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 12068 event pairs, 396 based on Foata normal form. 0/1436 useless extension candidates. Maximal degree in co-relation 2518. Up to 860 conditions per place. [2023-08-25 04:13:27,955 INFO L140 encePairwiseOnDemand]: 462/465 looper letters, 45 selfloop transitions, 5 changer transitions 0/117 dead transitions. [2023-08-25 04:13:27,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 117 transitions, 358 flow [2023-08-25 04:13:27,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 04:13:27,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 04:13:27,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1475 transitions. [2023-08-25 04:13:27,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286738351254481 [2023-08-25 04:13:27,959 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1475 transitions. [2023-08-25 04:13:27,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1475 transitions. [2023-08-25 04:13:27,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:13:27,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1475 transitions. [2023-08-25 04:13:27,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 245.83333333333334) internal successors, (1475), 6 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:27,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 465.0) internal successors, (3255), 7 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:27,971 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 465.0) internal successors, (3255), 7 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:27,971 INFO L175 Difference]: Start difference. First operand has 115 places, 114 transitions, 246 flow. Second operand 6 states and 1475 transitions. [2023-08-25 04:13:27,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 117 transitions, 358 flow [2023-08-25 04:13:27,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 117 transitions, 354 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 04:13:27,980 INFO L231 Difference]: Finished difference. Result has 122 places, 117 transitions, 278 flow [2023-08-25 04:13:27,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=278, PETRI_PLACES=122, PETRI_TRANSITIONS=117} [2023-08-25 04:13:27,981 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 10 predicate places. [2023-08-25 04:13:27,982 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 117 transitions, 278 flow [2023-08-25 04:13:27,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 238.57142857142858) internal successors, (1670), 7 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:27,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:13:27,986 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-25 04:13:27,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 04:13:28,192 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 [2023-08-25 04:13:28,193 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 04:13:28,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:13:28,194 INFO L85 PathProgramCache]: Analyzing trace with hash -248265741, now seen corresponding path program 2 times [2023-08-25 04:13:28,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:13:28,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174086051] [2023-08-25 04:13:28,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:28,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:13:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:13:28,308 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 04:13:28,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:13:28,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174086051] [2023-08-25 04:13:28,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174086051] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:13:28,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78761763] [2023-08-25 04:13:28,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 04:13:28,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:13:28,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:13:28,314 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) [2023-08-25 04:13:28,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 04:13:28,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 04:13:28,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 04:13:28,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 04:13:28,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:13:28,414 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 04:13:28,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 04:13:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 04:13:28,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78761763] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 04:13:28,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 04:13:28,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-25 04:13:28,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917176261] [2023-08-25 04:13:28,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 04:13:28,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 04:13:28,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:13:28,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 04:13:28,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-25 04:13:28,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 465 [2023-08-25 04:13:28,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 117 transitions, 278 flow. Second operand has 13 states, 13 states have (on average 238.30769230769232) internal successors, (3098), 13 states have internal predecessors, (3098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:28,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:13:28,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 465 [2023-08-25 04:13:28,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:13:28,746 INFO L124 PetriNetUnfolderBase]: 440/1656 cut-off events. [2023-08-25 04:13:28,746 INFO L125 PetriNetUnfolderBase]: For 25/27 co-relation queries the response was YES. [2023-08-25 04:13:28,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2567 conditions, 1656 events. 440/1656 cut-off events. For 25/27 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 12042 event pairs, 396 based on Foata normal form. 6/1449 useless extension candidates. Maximal degree in co-relation 2509. Up to 860 conditions per place. [2023-08-25 04:13:28,757 INFO L140 encePairwiseOnDemand]: 462/465 looper letters, 45 selfloop transitions, 11 changer transitions 0/123 dead transitions. [2023-08-25 04:13:28,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 123 transitions, 426 flow [2023-08-25 04:13:28,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 04:13:28,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 04:13:28,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2906 transitions. [2023-08-25 04:13:28,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207885304659499 [2023-08-25 04:13:28,765 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2906 transitions. [2023-08-25 04:13:28,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2906 transitions. [2023-08-25 04:13:28,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:13:28,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2906 transitions. [2023-08-25 04:13:28,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 242.16666666666666) internal successors, (2906), 12 states have internal predecessors, (2906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:28,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 465.0) internal successors, (6045), 13 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:28,785 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 465.0) internal successors, (6045), 13 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:28,785 INFO L175 Difference]: Start difference. First operand has 122 places, 117 transitions, 278 flow. Second operand 12 states and 2906 transitions. [2023-08-25 04:13:28,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 123 transitions, 426 flow [2023-08-25 04:13:28,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 123 transitions, 412 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-25 04:13:28,790 INFO L231 Difference]: Finished difference. Result has 138 places, 123 transitions, 348 flow [2023-08-25 04:13:28,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=348, PETRI_PLACES=138, PETRI_TRANSITIONS=123} [2023-08-25 04:13:28,791 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 26 predicate places. [2023-08-25 04:13:28,791 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 123 transitions, 348 flow [2023-08-25 04:13:28,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 238.30769230769232) internal successors, (3098), 13 states have internal predecessors, (3098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:28,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:13:28,793 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-25 04:13:28,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 04:13:29,001 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 [2023-08-25 04:13:29,001 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 04:13:29,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:13:29,002 INFO L85 PathProgramCache]: Analyzing trace with hash -157660301, now seen corresponding path program 3 times [2023-08-25 04:13:29,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:13:29,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864836365] [2023-08-25 04:13:29,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:29,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:13:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:13:29,040 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 04:13:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:13:29,087 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 04:13:29,087 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 04:13:29,088 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2023-08-25 04:13:29,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2023-08-25 04:13:29,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2023-08-25 04:13:29,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2023-08-25 04:13:29,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2023-08-25 04:13:29,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONASSERT (14 of 20 remaining) [2023-08-25 04:13:29,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2023-08-25 04:13:29,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2023-08-25 04:13:29,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2023-08-25 04:13:29,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2023-08-25 04:13:29,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2023-08-25 04:13:29,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONASSERT (8 of 20 remaining) [2023-08-25 04:13:29,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2023-08-25 04:13:29,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2023-08-25 04:13:29,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2023-08-25 04:13:29,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2023-08-25 04:13:29,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2023-08-25 04:13:29,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONASSERT (2 of 20 remaining) [2023-08-25 04:13:29,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2023-08-25 04:13:29,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2023-08-25 04:13:29,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 04:13:29,096 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-25 04:13:29,098 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 04:13:29,099 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 04:13:29,146 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 04:13:29,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 346 places, 389 transitions, 796 flow [2023-08-25 04:13:29,260 INFO L124 PetriNetUnfolderBase]: 80/652 cut-off events. [2023-08-25 04:13:29,260 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-08-25 04:13:29,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 652 events. 80/652 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3285 event pairs, 0 based on Foata normal form. 0/534 useless extension candidates. Maximal degree in co-relation 396. Up to 12 conditions per place. [2023-08-25 04:13:29,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 346 places, 389 transitions, 796 flow [2023-08-25 04:13:29,275 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 346 places, 389 transitions, 796 flow [2023-08-25 04:13:29,276 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:13:29,276 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 346 places, 389 transitions, 796 flow [2023-08-25 04:13:29,276 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 346 places, 389 transitions, 796 flow [2023-08-25 04:13:29,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 346 places, 389 transitions, 796 flow [2023-08-25 04:13:29,354 INFO L124 PetriNetUnfolderBase]: 80/652 cut-off events. [2023-08-25 04:13:29,354 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-08-25 04:13:29,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 652 events. 80/652 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3285 event pairs, 0 based on Foata normal form. 0/534 useless extension candidates. Maximal degree in co-relation 396. Up to 12 conditions per place. [2023-08-25 04:13:29,394 INFO L119 LiptonReduction]: Number of co-enabled transitions 79352 [2023-08-25 04:13:33,154 INFO L134 LiptonReduction]: Checked pairs total: 304368 [2023-08-25 04:13:33,154 INFO L136 LiptonReduction]: Total number of compositions: 255 [2023-08-25 04:13:33,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:13:33,156 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;@6a01fa29, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:13:33,157 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-08-25 04:13:33,162 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:13:33,162 INFO L124 PetriNetUnfolderBase]: 17/84 cut-off events. [2023-08-25 04:13:33,162 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 04:13:33,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:13:33,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:13:33,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 04:13:33,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:13:33,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1282672349, now seen corresponding path program 1 times [2023-08-25 04:13:33,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:13:33,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948515963] [2023-08-25 04:13:33,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:33,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:13:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:13:33,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:13:33,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:13:33,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948515963] [2023-08-25 04:13:33,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948515963] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:13:33,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:13:33,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:13:33,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506464722] [2023-08-25 04:13:33,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:13:33,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:13:33,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:13:33,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:13:33,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:13:33,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 644 [2023-08-25 04:13:33,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 197 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:33,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:13:33,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 644 [2023-08-25 04:13:33,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:13:37,124 INFO L124 PetriNetUnfolderBase]: 17084/40028 cut-off events. [2023-08-25 04:13:37,124 INFO L125 PetriNetUnfolderBase]: For 244/320 co-relation queries the response was YES. [2023-08-25 04:13:37,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64911 conditions, 40028 events. 17084/40028 cut-off events. For 244/320 co-relation queries the response was YES. Maximal size of possible extension queue 1142. Compared 443824 event pairs, 15876 based on Foata normal form. 5084/40264 useless extension candidates. Maximal degree in co-relation 22729. Up to 24758 conditions per place. [2023-08-25 04:13:37,370 INFO L140 encePairwiseOnDemand]: 609/644 looper letters, 65 selfloop transitions, 2 changer transitions 0/166 dead transitions. [2023-08-25 04:13:37,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 166 transitions, 484 flow [2023-08-25 04:13:37,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:13:37,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:13:37,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1096 transitions. [2023-08-25 04:13:37,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.567287784679089 [2023-08-25 04:13:37,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1096 transitions. [2023-08-25 04:13:37,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1096 transitions. [2023-08-25 04:13:37,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:13:37,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1096 transitions. [2023-08-25 04:13:37,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 365.3333333333333) internal successors, (1096), 3 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:37,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:37,380 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:37,381 INFO L175 Difference]: Start difference. First operand has 164 places, 197 transitions, 412 flow. Second operand 3 states and 1096 transitions. [2023-08-25 04:13:37,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 166 transitions, 484 flow [2023-08-25 04:13:37,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 166 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:13:37,388 INFO L231 Difference]: Finished difference. Result has 167 places, 166 transitions, 360 flow [2023-08-25 04:13:37,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=360, PETRI_PLACES=167, PETRI_TRANSITIONS=166} [2023-08-25 04:13:37,390 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 3 predicate places. [2023-08-25 04:13:37,390 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 166 transitions, 360 flow [2023-08-25 04:13:37,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:37,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:13:37,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:13:37,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 04:13:37,393 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 04:13:37,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:13:37,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1174372975, now seen corresponding path program 1 times [2023-08-25 04:13:37,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:13:37,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970747407] [2023-08-25 04:13:37,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:37,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:13:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:13:37,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:13:37,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:13:37,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970747407] [2023-08-25 04:13:37,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970747407] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:13:37,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089944052] [2023-08-25 04:13:37,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:37,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:13:37,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:13:37,455 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) [2023-08-25 04:13:37,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 04:13:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:13:37,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-25 04:13:37,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:13:37,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 04:13:37,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 04:13:37,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089944052] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:13:37,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 04:13:37,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-25 04:13:37,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121139623] [2023-08-25 04:13:37,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:13:37,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:13:37,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:13:37,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:13:37,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 04:13:37,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 644 [2023-08-25 04:13:37,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 166 transitions, 360 flow. Second operand has 3 states, 3 states have (on average 334.0) internal successors, (1002), 3 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:37,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:13:37,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 644 [2023-08-25 04:13:37,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:13:40,410 INFO L124 PetriNetUnfolderBase]: 17118/40256 cut-off events. [2023-08-25 04:13:40,411 INFO L125 PetriNetUnfolderBase]: For 198/230 co-relation queries the response was YES. [2023-08-25 04:13:40,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65128 conditions, 40256 events. 17118/40256 cut-off events. For 198/230 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 449020 event pairs, 14022 based on Foata normal form. 0/35360 useless extension candidates. Maximal degree in co-relation 65115. Up to 24720 conditions per place. [2023-08-25 04:13:40,634 INFO L140 encePairwiseOnDemand]: 641/644 looper letters, 85 selfloop transitions, 2 changer transitions 0/186 dead transitions. [2023-08-25 04:13:40,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 186 transitions, 574 flow [2023-08-25 04:13:40,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:13:40,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:13:40,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1083 transitions. [2023-08-25 04:13:40,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5605590062111802 [2023-08-25 04:13:40,637 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1083 transitions. [2023-08-25 04:13:40,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1083 transitions. [2023-08-25 04:13:40,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:13:40,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1083 transitions. [2023-08-25 04:13:40,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 361.0) internal successors, (1083), 3 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:40,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:40,646 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:40,646 INFO L175 Difference]: Start difference. First operand has 167 places, 166 transitions, 360 flow. Second operand 3 states and 1083 transitions. [2023-08-25 04:13:40,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 186 transitions, 574 flow [2023-08-25 04:13:40,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 186 transitions, 570 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 04:13:40,651 INFO L231 Difference]: Finished difference. Result has 169 places, 167 transitions, 368 flow [2023-08-25 04:13:40,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=368, PETRI_PLACES=169, PETRI_TRANSITIONS=167} [2023-08-25 04:13:40,654 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 5 predicate places. [2023-08-25 04:13:40,654 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 167 transitions, 368 flow [2023-08-25 04:13:40,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 334.0) internal successors, (1002), 3 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:40,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:13:40,655 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-25 04:13:40,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 04:13:40,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:13:40,860 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 04:13:40,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:13:40,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1245959489, now seen corresponding path program 1 times [2023-08-25 04:13:40,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:13:40,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962941221] [2023-08-25 04:13:40,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:40,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:13:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:13:40,909 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-25 04:13:40,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:13:40,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962941221] [2023-08-25 04:13:40,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962941221] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:13:40,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818301718] [2023-08-25 04:13:40,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:40,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:13:40,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:13:40,911 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) [2023-08-25 04:13:41,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 04:13:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:13:41,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 04:13:41,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:13:41,159 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-25 04:13:41,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 04:13:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-25 04:13:41,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818301718] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 04:13:41,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 04:13:41,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-25 04:13:41,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875195772] [2023-08-25 04:13:41,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 04:13:41,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 04:13:41,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:13:41,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 04:13:41,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 04:13:41,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 644 [2023-08-25 04:13:41,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 167 transitions, 368 flow. Second operand has 6 states, 6 states have (on average 333.6666666666667) internal successors, (2002), 6 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:41,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:13:41,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 644 [2023-08-25 04:13:41,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:13:44,302 INFO L124 PetriNetUnfolderBase]: 17118/40432 cut-off events. [2023-08-25 04:13:44,303 INFO L125 PetriNetUnfolderBase]: For 956/972 co-relation queries the response was YES. [2023-08-25 04:13:44,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66089 conditions, 40432 events. 17118/40432 cut-off events. For 956/972 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 451959 event pairs, 15876 based on Foata normal form. 3/35873 useless extension candidates. Maximal degree in co-relation 66061. Up to 24740 conditions per place. [2023-08-25 04:13:44,535 INFO L140 encePairwiseOnDemand]: 641/644 looper letters, 66 selfloop transitions, 5 changer transitions 0/170 dead transitions. [2023-08-25 04:13:44,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 170 transitions, 522 flow [2023-08-25 04:13:44,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 04:13:44,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 04:13:44,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2065 transitions. [2023-08-25 04:13:44,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5344202898550725 [2023-08-25 04:13:44,542 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2065 transitions. [2023-08-25 04:13:44,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2065 transitions. [2023-08-25 04:13:44,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:13:44,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2065 transitions. [2023-08-25 04:13:44,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 344.1666666666667) internal successors, (2065), 6 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:44,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 644.0) internal successors, (4508), 7 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:44,553 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 644.0) internal successors, (4508), 7 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:44,553 INFO L175 Difference]: Start difference. First operand has 169 places, 167 transitions, 368 flow. Second operand 6 states and 2065 transitions. [2023-08-25 04:13:44,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 170 transitions, 522 flow [2023-08-25 04:13:44,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 170 transitions, 520 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 04:13:44,559 INFO L231 Difference]: Finished difference. Result has 176 places, 170 transitions, 402 flow [2023-08-25 04:13:44,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=402, PETRI_PLACES=176, PETRI_TRANSITIONS=170} [2023-08-25 04:13:44,561 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 12 predicate places. [2023-08-25 04:13:44,561 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 170 transitions, 402 flow [2023-08-25 04:13:44,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 333.6666666666667) internal successors, (2002), 6 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:44,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:13:44,562 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-25 04:13:44,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-25 04:13:44,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:13:44,770 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 04:13:44,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:13:44,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1086451855, now seen corresponding path program 2 times [2023-08-25 04:13:44,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:13:44,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116019213] [2023-08-25 04:13:44,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:44,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:13:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:13:44,873 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-25 04:13:44,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:13:44,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116019213] [2023-08-25 04:13:44,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116019213] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:13:44,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34600527] [2023-08-25 04:13:44,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 04:13:44,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:13:44,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:13:44,875 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) [2023-08-25 04:13:44,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 04:13:44,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 04:13:44,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 04:13:44,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 04:13:44,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:13:44,982 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-25 04:13:44,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 04:13:45,036 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-25 04:13:45,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34600527] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 04:13:45,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 04:13:45,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-25 04:13:45,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542477800] [2023-08-25 04:13:45,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 04:13:45,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 04:13:45,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:13:45,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 04:13:45,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-25 04:13:45,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 644 [2023-08-25 04:13:45,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 170 transitions, 402 flow. Second operand has 13 states, 13 states have (on average 333.38461538461536) internal successors, (4334), 13 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:45,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:13:45,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 644 [2023-08-25 04:13:45,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:13:48,362 INFO L124 PetriNetUnfolderBase]: 17118/40438 cut-off events. [2023-08-25 04:13:48,362 INFO L125 PetriNetUnfolderBase]: For 990/1006 co-relation queries the response was YES. [2023-08-25 04:13:48,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66109 conditions, 40438 events. 17118/40438 cut-off events. For 990/1006 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 451756 event pairs, 15876 based on Foata normal form. 6/35882 useless extension candidates. Maximal degree in co-relation 66049. Up to 24740 conditions per place. [2023-08-25 04:13:48,591 INFO L140 encePairwiseOnDemand]: 641/644 looper letters, 66 selfloop transitions, 11 changer transitions 0/176 dead transitions. [2023-08-25 04:13:48,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 176 transitions, 592 flow [2023-08-25 04:13:48,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 04:13:48,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 04:13:48,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4066 transitions. [2023-08-25 04:13:48,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5261387163561076 [2023-08-25 04:13:48,601 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4066 transitions. [2023-08-25 04:13:48,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4066 transitions. [2023-08-25 04:13:48,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:13:48,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4066 transitions. [2023-08-25 04:13:48,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 338.8333333333333) internal successors, (4066), 12 states have internal predecessors, (4066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:48,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 644.0) internal successors, (8372), 13 states have internal predecessors, (8372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:48,637 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 644.0) internal successors, (8372), 13 states have internal predecessors, (8372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:48,637 INFO L175 Difference]: Start difference. First operand has 176 places, 170 transitions, 402 flow. Second operand 12 states and 4066 transitions. [2023-08-25 04:13:48,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 176 transitions, 592 flow [2023-08-25 04:13:48,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 176 transitions, 578 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-25 04:13:48,642 INFO L231 Difference]: Finished difference. Result has 192 places, 176 transitions, 472 flow [2023-08-25 04:13:48,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=472, PETRI_PLACES=192, PETRI_TRANSITIONS=176} [2023-08-25 04:13:48,643 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 28 predicate places. [2023-08-25 04:13:48,644 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 176 transitions, 472 flow [2023-08-25 04:13:48,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 333.38461538461536) internal successors, (4334), 13 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:48,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:13:48,645 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-25 04:13:48,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-25 04:13:48,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:13:48,851 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 04:13:48,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:13:48,851 INFO L85 PathProgramCache]: Analyzing trace with hash 464432305, now seen corresponding path program 3 times [2023-08-25 04:13:48,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:13:48,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334541719] [2023-08-25 04:13:48,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:48,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:13:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:13:48,890 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 04:13:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:13:48,924 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 04:13:48,924 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 04:13:48,925 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2023-08-25 04:13:48,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2023-08-25 04:13:48,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2023-08-25 04:13:48,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2023-08-25 04:13:48,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2023-08-25 04:13:48,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONASSERT (20 of 26 remaining) [2023-08-25 04:13:48,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2023-08-25 04:13:48,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 26 remaining) [2023-08-25 04:13:48,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2023-08-25 04:13:48,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2023-08-25 04:13:48,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2023-08-25 04:13:48,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONASSERT (14 of 26 remaining) [2023-08-25 04:13:48,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2023-08-25 04:13:48,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2023-08-25 04:13:48,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2023-08-25 04:13:48,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2023-08-25 04:13:48,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 26 remaining) [2023-08-25 04:13:48,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONASSERT (8 of 26 remaining) [2023-08-25 04:13:48,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 26 remaining) [2023-08-25 04:13:48,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2023-08-25 04:13:48,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2023-08-25 04:13:48,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2023-08-25 04:13:48,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2023-08-25 04:13:48,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONASSERT (2 of 26 remaining) [2023-08-25 04:13:48,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2023-08-25 04:13:48,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2023-08-25 04:13:48,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 04:13:48,928 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-08-25 04:13:48,928 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 04:13:48,928 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-25 04:13:48,981 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-25 04:13:48,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 444 places, 500 transitions, 1030 flow [2023-08-25 04:13:49,138 INFO L124 PetriNetUnfolderBase]: 117/955 cut-off events. [2023-08-25 04:13:49,139 INFO L125 PetriNetUnfolderBase]: For 19/22 co-relation queries the response was YES. [2023-08-25 04:13:49,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 955 events. 117/955 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5414 event pairs, 1 based on Foata normal form. 0/784 useless extension candidates. Maximal degree in co-relation 660. Up to 16 conditions per place. [2023-08-25 04:13:49,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 444 places, 500 transitions, 1030 flow [2023-08-25 04:13:49,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 444 places, 500 transitions, 1030 flow [2023-08-25 04:13:49,173 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:13:49,173 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 444 places, 500 transitions, 1030 flow [2023-08-25 04:13:49,173 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 444 places, 500 transitions, 1030 flow [2023-08-25 04:13:49,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 444 places, 500 transitions, 1030 flow [2023-08-25 04:13:49,323 INFO L124 PetriNetUnfolderBase]: 117/955 cut-off events. [2023-08-25 04:13:49,323 INFO L125 PetriNetUnfolderBase]: For 19/22 co-relation queries the response was YES. [2023-08-25 04:13:49,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 955 events. 117/955 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5414 event pairs, 1 based on Foata normal form. 0/784 useless extension candidates. Maximal degree in co-relation 660. Up to 16 conditions per place. [2023-08-25 04:13:49,403 INFO L119 LiptonReduction]: Number of co-enabled transitions 155652 [2023-08-25 04:13:53,951 INFO L134 LiptonReduction]: Checked pairs total: 609457 [2023-08-25 04:13:53,951 INFO L136 LiptonReduction]: Total number of compositions: 340 [2023-08-25 04:13:53,953 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:13:53,953 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;@6a01fa29, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:13:53,953 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-08-25 04:13:53,958 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:13:53,958 INFO L124 PetriNetUnfolderBase]: 14/80 cut-off events. [2023-08-25 04:13:53,958 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 04:13:53,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:13:53,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:13:53,959 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-25 04:13:53,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:13:53,959 INFO L85 PathProgramCache]: Analyzing trace with hash 867352835, now seen corresponding path program 1 times [2023-08-25 04:13:53,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:13:53,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888904060] [2023-08-25 04:13:53,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:53,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:13:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:13:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:13:53,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:13:53,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888904060] [2023-08-25 04:13:53,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888904060] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:13:53,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:13:53,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:13:53,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307598174] [2023-08-25 04:13:53,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:13:53,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:13:53,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:13:53,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:13:53,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:13:53,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 840 [2023-08-25 04:13:53,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 258 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 428.6666666666667) internal successors, (1286), 3 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:13:53,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:13:53,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 840 [2023-08-25 04:13:53,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:15:17,885 INFO L124 PetriNetUnfolderBase]: 494646/922734 cut-off events. [2023-08-25 04:15:17,885 INFO L125 PetriNetUnfolderBase]: For 5842/7635 co-relation queries the response was YES. [2023-08-25 04:15:21,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1560090 conditions, 922734 events. 494646/922734 cut-off events. For 5842/7635 co-relation queries the response was YES. Maximal size of possible extension queue 20484. Compared 12289238 event pairs, 463987 based on Foata normal form. 141433/951037 useless extension candidates. Maximal degree in co-relation 250570. Up to 634351 conditions per place. [2023-08-25 04:15:26,901 INFO L140 encePairwiseOnDemand]: 794/840 looper letters, 85 selfloop transitions, 2 changer transitions 0/216 dead transitions. [2023-08-25 04:15:26,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 216 transitions, 636 flow [2023-08-25 04:15:26,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:15:26,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:15:26,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1412 transitions. [2023-08-25 04:15:26,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5603174603174603 [2023-08-25 04:15:26,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1412 transitions. [2023-08-25 04:15:26,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1412 transitions. [2023-08-25 04:15:26,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:15:26,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1412 transitions. [2023-08-25 04:15:26,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 470.6666666666667) internal successors, (1412), 3 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:15:26,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 840.0) internal successors, (3360), 4 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:15:26,949 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 840.0) internal successors, (3360), 4 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:15:26,950 INFO L175 Difference]: Start difference. First operand has 214 places, 258 transitions, 546 flow. Second operand 3 states and 1412 transitions. [2023-08-25 04:15:26,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 216 transitions, 636 flow [2023-08-25 04:15:26,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 216 transitions, 636 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:15:26,959 INFO L231 Difference]: Finished difference. Result has 217 places, 216 transitions, 472 flow [2023-08-25 04:15:26,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=840, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=472, PETRI_PLACES=217, PETRI_TRANSITIONS=216} [2023-08-25 04:15:26,960 INFO L281 CegarLoopForPetriNet]: 214 programPoint places, 3 predicate places. [2023-08-25 04:15:26,960 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 216 transitions, 472 flow [2023-08-25 04:15:26,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 428.6666666666667) internal successors, (1286), 3 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:15:26,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:15:26,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:15:26,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 04:15:26,961 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-25 04:15:26,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:15:26,962 INFO L85 PathProgramCache]: Analyzing trace with hash -19883316, now seen corresponding path program 1 times [2023-08-25 04:15:26,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:15:26,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529151529] [2023-08-25 04:15:26,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:15:26,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:15:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:15:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:15:27,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:15:27,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529151529] [2023-08-25 04:15:27,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529151529] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:15:27,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667346645] [2023-08-25 04:15:27,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:15:27,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:15:27,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:15:27,017 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) [2023-08-25 04:15:27,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 04:15:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:15:27,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-25 04:15:27,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:15:27,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 04:15:27,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 04:15:27,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667346645] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:15:27,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 04:15:27,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-25 04:15:27,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697884872] [2023-08-25 04:15:27,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:15:27,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:15:27,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:15:27,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:15:27,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 04:15:27,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 840 [2023-08-25 04:15:27,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 216 transitions, 472 flow. Second operand has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:15:27,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:15:27,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 840 [2023-08-25 04:15:27,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:16:52,918 INFO L124 PetriNetUnfolderBase]: 495419/931471 cut-off events. [2023-08-25 04:16:52,919 INFO L125 PetriNetUnfolderBase]: For 6491/7704 co-relation queries the response was YES. [2023-08-25 04:16:55,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1568816 conditions, 931471 events. 495419/931471 cut-off events. For 6491/7704 co-relation queries the response was YES. Maximal size of possible extension queue 20784. Compared 12528899 event pairs, 419684 based on Foata normal form. 0/816718 useless extension candidates. Maximal degree in co-relation 1568802. Up to 634313 conditions per place. [2023-08-25 04:17:01,313 INFO L140 encePairwiseOnDemand]: 837/840 looper letters, 105 selfloop transitions, 2 changer transitions 0/236 dead transitions. [2023-08-25 04:17:01,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 236 transitions, 726 flow [2023-08-25 04:17:01,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:17:01,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:17:01,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1388 transitions. [2023-08-25 04:17:01,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5507936507936508 [2023-08-25 04:17:01,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1388 transitions. [2023-08-25 04:17:01,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1388 transitions. [2023-08-25 04:17:01,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:17:01,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1388 transitions. [2023-08-25 04:17:01,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 462.6666666666667) internal successors, (1388), 3 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:17:01,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 840.0) internal successors, (3360), 4 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:17:01,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 840.0) internal successors, (3360), 4 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:17:01,339 INFO L175 Difference]: Start difference. First operand has 217 places, 216 transitions, 472 flow. Second operand 3 states and 1388 transitions. [2023-08-25 04:17:01,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 236 transitions, 726 flow [2023-08-25 04:17:01,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 236 transitions, 722 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 04:17:01,349 INFO L231 Difference]: Finished difference. Result has 219 places, 217 transitions, 480 flow [2023-08-25 04:17:01,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=840, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=480, PETRI_PLACES=219, PETRI_TRANSITIONS=217} [2023-08-25 04:17:01,351 INFO L281 CegarLoopForPetriNet]: 214 programPoint places, 5 predicate places. [2023-08-25 04:17:01,351 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 217 transitions, 480 flow [2023-08-25 04:17:01,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:17:01,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:17:01,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:17:01,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-25 04:17:01,556 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 [2023-08-25 04:17:01,556 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-25 04:17:01,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:17:01,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1809139982, now seen corresponding path program 1 times [2023-08-25 04:17:01,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:17:01,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114605883] [2023-08-25 04:17:01,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:17:01,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:17:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:17:01,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:17:01,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:17:01,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114605883] [2023-08-25 04:17:01,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114605883] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:17:01,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374884786] [2023-08-25 04:17:01,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:17:01,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:17:01,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:17:01,664 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) [2023-08-25 04:17:01,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 04:17:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:17:01,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 04:17:01,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:17:01,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:17:01,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 04:17:01,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:17:01,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374884786] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 04:17:01,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 04:17:01,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-25 04:17:01,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477993402] [2023-08-25 04:17:01,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 04:17:01,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 04:17:01,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:17:01,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 04:17:01,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 04:17:01,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 840 [2023-08-25 04:17:01,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 217 transitions, 480 flow. Second operand has 7 states, 7 states have (on average 428.85714285714283) internal successors, (3002), 7 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:17:01,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:17:01,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 840 [2023-08-25 04:17:01,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand