/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_06-cond_racing1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 03:59:43,129 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 03:59:43,193 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 03:59:43,197 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 03:59:43,197 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 03:59:43,220 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 03:59:43,220 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 03:59:43,220 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 03:59:43,221 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 03:59:43,223 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 03:59:43,224 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 03:59:43,224 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 03:59:43,224 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 03:59:43,225 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 03:59:43,225 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 03:59:43,225 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 03:59:43,225 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 03:59:43,226 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 03:59:43,226 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 03:59:43,226 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 03:59:43,226 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 03:59:43,227 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 03:59:43,227 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 03:59:43,227 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 03:59:43,227 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 03:59:43,227 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 03:59:43,228 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 03:59:43,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 03:59:43,228 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 03:59:43,228 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 03:59:43,229 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 03:59:43,229 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 03:59:43,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 03:59:43,229 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 03:59:43,229 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 03:59:43,229 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 03:59:43,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 03:59:43,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 03:59:43,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 03:59:43,494 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 03:59:43,494 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 03:59:43,495 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i [2023-08-25 03:59:44,437 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 03:59:44,718 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 03:59:44,719 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i [2023-08-25 03:59:44,733 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76e817e4c/2086971ad5dc4c4fa691623fd3a9f63a/FLAG855220387 [2023-08-25 03:59:44,745 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76e817e4c/2086971ad5dc4c4fa691623fd3a9f63a [2023-08-25 03:59:44,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 03:59:44,750 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 03:59:44,752 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 03:59:44,752 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 03:59:44,753 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 03:59:44,754 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 03:59:44" (1/1) ... [2023-08-25 03:59:44,755 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be91faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:44, skipping insertion in model container [2023-08-25 03:59:44,755 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 03:59:44" (1/1) ... [2023-08-25 03:59:44,790 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 03:59:45,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 03:59:45,151 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 03:59:45,163 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [119] [2023-08-25 03:59:45,179 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [481] [2023-08-25 03:59:45,180 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [481] [2023-08-25 03:59:45,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 03:59:45,249 INFO L206 MainTranslator]: Completed translation [2023-08-25 03:59:45,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:45 WrapperNode [2023-08-25 03:59:45,250 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 03:59:45,251 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 03:59:45,251 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 03:59:45,251 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 03:59:45,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:45" (1/1) ... [2023-08-25 03:59:45,279 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:45" (1/1) ... [2023-08-25 03:59:45,300 INFO L138 Inliner]: procedures = 270, calls = 37, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 101 [2023-08-25 03:59:45,301 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 03:59:45,302 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 03:59:45,302 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 03:59:45,302 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 03:59:45,307 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:45" (1/1) ... [2023-08-25 03:59:45,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:45" (1/1) ... [2023-08-25 03:59:45,321 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:45" (1/1) ... [2023-08-25 03:59:45,321 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:45" (1/1) ... [2023-08-25 03:59:45,325 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:45" (1/1) ... [2023-08-25 03:59:45,327 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:45" (1/1) ... [2023-08-25 03:59:45,328 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:45" (1/1) ... [2023-08-25 03:59:45,329 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:45" (1/1) ... [2023-08-25 03:59:45,330 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 03:59:45,331 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 03:59:45,331 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 03:59:45,331 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 03:59:45,332 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:45" (1/1) ... [2023-08-25 03:59:45,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 03:59:45,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:59:45,366 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 03:59:45,386 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 03:59:45,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 03:59:45,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 03:59:45,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 03:59:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 03:59:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 03:59:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 03:59:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-25 03:59:45,393 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-25 03:59:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 03:59:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 03:59:45,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 03:59:45,394 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 03:59:45,502 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 03:59:45,503 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 03:59:45,676 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 03:59:45,682 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 03:59:45,682 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-25 03:59:45,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 03:59:45 BoogieIcfgContainer [2023-08-25 03:59:45,688 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 03:59:45,697 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 03:59:45,697 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 03:59:45,699 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 03:59:45,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 03:59:44" (1/3) ... [2023-08-25 03:59:45,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1434d6fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 03:59:45, skipping insertion in model container [2023-08-25 03:59:45,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:45" (2/3) ... [2023-08-25 03:59:45,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1434d6fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 03:59:45, skipping insertion in model container [2023-08-25 03:59:45,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 03:59:45" (3/3) ... [2023-08-25 03:59:45,701 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_06-cond_racing1.i [2023-08-25 03:59:45,713 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 03:59:45,713 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-25 03:59:45,713 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 03:59:45,777 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-25 03:59:45,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 150 transitions, 308 flow [2023-08-25 03:59:45,884 INFO L124 PetriNetUnfolderBase]: 25/207 cut-off events. [2023-08-25 03:59:45,884 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 03:59:45,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 207 events. 25/207 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 594 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 106. Up to 6 conditions per place. [2023-08-25 03:59:45,891 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 150 transitions, 308 flow [2023-08-25 03:59:45,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 150 transitions, 308 flow [2023-08-25 03:59:45,900 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 03:59:45,906 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 150 transitions, 308 flow [2023-08-25 03:59:45,908 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 150 transitions, 308 flow [2023-08-25 03:59:45,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 150 transitions, 308 flow [2023-08-25 03:59:45,932 INFO L124 PetriNetUnfolderBase]: 25/207 cut-off events. [2023-08-25 03:59:45,932 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 03:59:45,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 207 events. 25/207 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 594 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 106. Up to 6 conditions per place. [2023-08-25 03:59:45,936 INFO L119 LiptonReduction]: Number of co-enabled transitions 5544 [2023-08-25 03:59:49,061 INFO L134 LiptonReduction]: Checked pairs total: 14601 [2023-08-25 03:59:49,062 INFO L136 LiptonReduction]: Total number of compositions: 128 [2023-08-25 03:59:49,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 03:59:49,086 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;@742dfb02, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 03:59:49,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-25 03:59:49,089 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 03:59:49,089 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2023-08-25 03:59:49,089 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:59:49,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:49,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 03:59:49,090 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-25 03:59:49,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:49,094 INFO L85 PathProgramCache]: Analyzing trace with hash 17596463, now seen corresponding path program 1 times [2023-08-25 03:59:49,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:49,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683164511] [2023-08-25 03:59:49,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:49,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:59:49,286 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 03:59:49,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:59:49,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683164511] [2023-08-25 03:59:49,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683164511] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:59:49,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:59:49,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:59:49,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880265165] [2023-08-25 03:59:49,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:59:49,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:59:49,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:59:49,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:59:49,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:59:49,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 278 [2023-08-25 03:59:49,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 52 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 03:59:49,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:59:49,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 278 [2023-08-25 03:59:49,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:59:49,432 INFO L124 PetriNetUnfolderBase]: 145/397 cut-off events. [2023-08-25 03:59:49,433 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 03:59:49,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 397 events. 145/397 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1865 event pairs, 110 based on Foata normal form. 37/367 useless extension candidates. Maximal degree in co-relation 688. Up to 293 conditions per place. [2023-08-25 03:59:49,438 INFO L140 encePairwiseOnDemand]: 264/278 looper letters, 37 selfloop transitions, 2 changer transitions 2/54 dead transitions. [2023-08-25 03:59:49,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 198 flow [2023-08-25 03:59:49,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:59:49,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:59:49,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-08-25 03:59:49,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5275779376498801 [2023-08-25 03:59:49,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-08-25 03:59:49,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-08-25 03:59:49,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:59:49,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-08-25 03:59:49,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 03:59:49,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states 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 03:59:49,466 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states 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 03:59:49,468 INFO L175 Difference]: Start difference. First operand has 44 places, 52 transitions, 112 flow. Second operand 3 states and 440 transitions. [2023-08-25 03:59:49,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 198 flow [2023-08-25 03:59:49,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 198 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 03:59:49,472 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 93 flow [2023-08-25 03:59:49,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-08-25 03:59:49,476 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2023-08-25 03:59:49,476 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 93 flow [2023-08-25 03:59:49,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 03:59:49,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:49,476 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-25 03:59:49,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 03:59:49,477 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-25 03:59:49,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:49,478 INFO L85 PathProgramCache]: Analyzing trace with hash -293400313, now seen corresponding path program 1 times [2023-08-25 03:59:49,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:49,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683227817] [2023-08-25 03:59:49,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:49,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:59:49,508 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 03:59:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:59:49,534 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 03:59:49,534 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 03:59:49,535 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2023-08-25 03:59:49,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2023-08-25 03:59:49,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2023-08-25 03:59:49,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (8 of 12 remaining) [2023-08-25 03:59:49,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2023-08-25 03:59:49,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2023-08-25 03:59:49,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2023-08-25 03:59:49,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2023-08-25 03:59:49,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2023-08-25 03:59:49,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2023-08-25 03:59:49,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2023-08-25 03:59:49,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2023-08-25 03:59:49,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 03:59:49,538 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-25 03:59:49,539 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 03:59:49,539 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 03:59:49,563 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 03:59:49,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 196 transitions, 410 flow [2023-08-25 03:59:49,598 INFO L124 PetriNetUnfolderBase]: 43/341 cut-off events. [2023-08-25 03:59:49,599 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 03:59:49,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 341 events. 43/341 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1209 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 209. Up to 9 conditions per place. [2023-08-25 03:59:49,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 196 transitions, 410 flow [2023-08-25 03:59:49,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 196 transitions, 410 flow [2023-08-25 03:59:49,604 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 03:59:49,604 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 196 transitions, 410 flow [2023-08-25 03:59:49,604 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 196 transitions, 410 flow [2023-08-25 03:59:49,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 196 transitions, 410 flow [2023-08-25 03:59:49,628 INFO L124 PetriNetUnfolderBase]: 43/341 cut-off events. [2023-08-25 03:59:49,628 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 03:59:49,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 341 events. 43/341 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1209 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 209. Up to 9 conditions per place. [2023-08-25 03:59:49,636 INFO L119 LiptonReduction]: Number of co-enabled transitions 15928 [2023-08-25 03:59:52,531 INFO L134 LiptonReduction]: Checked pairs total: 57669 [2023-08-25 03:59:52,531 INFO L136 LiptonReduction]: Total number of compositions: 143 [2023-08-25 03:59:52,533 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 03:59:52,533 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;@742dfb02, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 03:59:52,533 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-25 03:59:52,535 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 03:59:52,535 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2023-08-25 03:59:52,535 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:59:52,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:52,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 03:59:52,535 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-25 03:59:52,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:52,536 INFO L85 PathProgramCache]: Analyzing trace with hash 29456891, now seen corresponding path program 1 times [2023-08-25 03:59:52,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:52,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171277795] [2023-08-25 03:59:52,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:52,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:59:52,570 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 03:59:52,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:59:52,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171277795] [2023-08-25 03:59:52,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171277795] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:59:52,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:59:52,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:59:52,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144909921] [2023-08-25 03:59:52,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:59:52,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:59:52,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:59:52,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:59:52,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:59:52,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 339 [2023-08-25 03:59:52,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 89 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states 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 03:59:52,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:59:52,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 339 [2023-08-25 03:59:52,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:59:52,992 INFO L124 PetriNetUnfolderBase]: 2834/6089 cut-off events. [2023-08-25 03:59:52,992 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-08-25 03:59:52,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10653 conditions, 6089 events. 2834/6089 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 48597 event pairs, 1250 based on Foata normal form. 694/5877 useless extension candidates. Maximal degree in co-relation 920. Up to 4467 conditions per place. [2023-08-25 03:59:53,020 INFO L140 encePairwiseOnDemand]: 318/339 looper letters, 48 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2023-08-25 03:59:53,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 82 transitions, 282 flow [2023-08-25 03:59:53,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:59:53,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:59:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 570 transitions. [2023-08-25 03:59:53,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56047197640118 [2023-08-25 03:59:53,023 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 570 transitions. [2023-08-25 03:59:53,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 570 transitions. [2023-08-25 03:59:53,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:59:53,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 570 transitions. [2023-08-25 03:59:53,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:53,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 03:59:53,027 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 03:59:53,028 INFO L175 Difference]: Start difference. First operand has 75 places, 89 transitions, 196 flow. Second operand 3 states and 570 transitions. [2023-08-25 03:59:53,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 82 transitions, 282 flow [2023-08-25 03:59:53,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 82 transitions, 282 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 03:59:53,031 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 172 flow [2023-08-25 03:59:53,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2023-08-25 03:59:53,032 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2023-08-25 03:59:53,032 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 172 flow [2023-08-25 03:59:53,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states 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 03:59:53,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:53,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:59:53,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 03:59:53,033 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-25 03:59:53,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:53,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1694075070, now seen corresponding path program 1 times [2023-08-25 03:59:53,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:53,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94341418] [2023-08-25 03:59:53,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:53,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:59:53,083 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 03:59:53,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:59:53,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94341418] [2023-08-25 03:59:53,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94341418] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:59:53,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:59:53,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:59:53,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997786380] [2023-08-25 03:59:53,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:59:53,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:59:53,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:59:53,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:59:53,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:59:53,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 339 [2023-08-25 03:59:53,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 03:59:53,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:59:53,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 339 [2023-08-25 03:59:53,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:59:54,276 INFO L124 PetriNetUnfolderBase]: 13535/23364 cut-off events. [2023-08-25 03:59:54,277 INFO L125 PetriNetUnfolderBase]: For 979/979 co-relation queries the response was YES. [2023-08-25 03:59:54,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46153 conditions, 23364 events. 13535/23364 cut-off events. For 979/979 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 178366 event pairs, 5543 based on Foata normal form. 0/18928 useless extension candidates. Maximal degree in co-relation 46037. Up to 10730 conditions per place. [2023-08-25 03:59:54,379 INFO L140 encePairwiseOnDemand]: 320/339 looper letters, 93 selfloop transitions, 14 changer transitions 0/121 dead transitions. [2023-08-25 03:59:54,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 121 transitions, 506 flow [2023-08-25 03:59:54,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:59:54,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:59:54,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 548 transitions. [2023-08-25 03:59:54,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5388397246804326 [2023-08-25 03:59:54,381 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 548 transitions. [2023-08-25 03:59:54,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 548 transitions. [2023-08-25 03:59:54,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:59:54,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 548 transitions. [2023-08-25 03:59:54,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states 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 03:59:54,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 03:59:54,385 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 03:59:54,385 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 172 flow. Second operand 3 states and 548 transitions. [2023-08-25 03:59:54,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 121 transitions, 506 flow [2023-08-25 03:59:54,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 121 transitions, 503 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 03:59:54,390 INFO L231 Difference]: Finished difference. Result has 78 places, 85 transitions, 292 flow [2023-08-25 03:59:54,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=78, PETRI_TRANSITIONS=85} [2023-08-25 03:59:54,393 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2023-08-25 03:59:54,393 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 85 transitions, 292 flow [2023-08-25 03:59:54,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 03:59:54,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:54,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:59:54,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 03:59:54,394 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-25 03:59:54,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:54,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1865660873, now seen corresponding path program 1 times [2023-08-25 03:59:54,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:54,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601882969] [2023-08-25 03:59:54,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:54,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:59:54,507 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 03:59:54,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:59:54,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601882969] [2023-08-25 03:59:54,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601882969] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 03:59:54,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426973585] [2023-08-25 03:59:54,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:54,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:59:54,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:59:54,510 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 03:59:54,535 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 03:59:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:59:54,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 03:59:54,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 03:59:54,630 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 03:59:54,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 03:59:54,648 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 03:59:54,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426973585] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 03:59:54,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 03:59:54,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-25 03:59:54,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864450843] [2023-08-25 03:59:54,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 03:59:54,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 03:59:54,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:59:54,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 03:59:54,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 03:59:54,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 339 [2023-08-25 03:59:54,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 85 transitions, 292 flow. Second operand has 7 states, 7 states have (on average 167.28571428571428) internal successors, (1171), 7 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states 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 03:59:54,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:59:54,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 339 [2023-08-25 03:59:54,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:59:54,808 INFO L124 PetriNetUnfolderBase]: 894/2001 cut-off events. [2023-08-25 03:59:54,808 INFO L125 PetriNetUnfolderBase]: For 1365/1420 co-relation queries the response was YES. [2023-08-25 03:59:54,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4931 conditions, 2001 events. 894/2001 cut-off events. For 1365/1420 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 13477 event pairs, 47 based on Foata normal form. 239/2144 useless extension candidates. Maximal degree in co-relation 1262. Up to 1130 conditions per place. [2023-08-25 03:59:54,817 INFO L140 encePairwiseOnDemand]: 335/339 looper letters, 65 selfloop transitions, 3 changer transitions 0/103 dead transitions. [2023-08-25 03:59:54,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 103 transitions, 482 flow [2023-08-25 03:59:54,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 03:59:54,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 03:59:54,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 887 transitions. [2023-08-25 03:59:54,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5233038348082596 [2023-08-25 03:59:54,819 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 887 transitions. [2023-08-25 03:59:54,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 887 transitions. [2023-08-25 03:59:54,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:59:54,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 887 transitions. [2023-08-25 03:59:54,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 177.4) internal successors, (887), 5 states have internal predecessors, (887), 0 states have call successors, (0), 0 states 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 03:59:54,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 339.0) internal successors, (2034), 6 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states 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 03:59:54,823 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 339.0) internal successors, (2034), 6 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states 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 03:59:54,823 INFO L175 Difference]: Start difference. First operand has 78 places, 85 transitions, 292 flow. Second operand 5 states and 887 transitions. [2023-08-25 03:59:54,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 103 transitions, 482 flow [2023-08-25 03:59:54,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 103 transitions, 440 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-25 03:59:54,829 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 210 flow [2023-08-25 03:59:54,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2023-08-25 03:59:54,830 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -9 predicate places. [2023-08-25 03:59:54,830 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 210 flow [2023-08-25 03:59:54,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 167.28571428571428) internal successors, (1171), 7 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states 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 03:59:54,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:54,831 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-25 03:59:54,837 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 03:59:55,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:59:55,036 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-25 03:59:55,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:55,036 INFO L85 PathProgramCache]: Analyzing trace with hash 782408209, now seen corresponding path program 1 times [2023-08-25 03:59:55,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:55,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738596287] [2023-08-25 03:59:55,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:55,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:59:55,053 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 03:59:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:59:55,070 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 03:59:55,070 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 03:59:55,070 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2023-08-25 03:59:55,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2023-08-25 03:59:55,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2023-08-25 03:59:55,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (12 of 16 remaining) [2023-08-25 03:59:55,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2023-08-25 03:59:55,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2023-08-25 03:59:55,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2023-08-25 03:59:55,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2023-08-25 03:59:55,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2023-08-25 03:59:55,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2023-08-25 03:59:55,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2023-08-25 03:59:55,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2023-08-25 03:59:55,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2023-08-25 03:59:55,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2023-08-25 03:59:55,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2023-08-25 03:59:55,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2023-08-25 03:59:55,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 03:59:55,072 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-25 03:59:55,072 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 03:59:55,072 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-25 03:59:55,095 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-25 03:59:55,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 242 transitions, 514 flow [2023-08-25 03:59:55,137 INFO L124 PetriNetUnfolderBase]: 66/520 cut-off events. [2023-08-25 03:59:55,138 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-25 03:59:55,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 520 events. 66/520 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2000 event pairs, 1 based on Foata normal form. 0/422 useless extension candidates. Maximal degree in co-relation 349. Up to 16 conditions per place. [2023-08-25 03:59:55,140 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 242 transitions, 514 flow [2023-08-25 03:59:55,142 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 242 transitions, 514 flow [2023-08-25 03:59:55,142 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 03:59:55,142 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 242 transitions, 514 flow [2023-08-25 03:59:55,142 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 242 transitions, 514 flow [2023-08-25 03:59:55,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 242 transitions, 514 flow [2023-08-25 03:59:55,178 INFO L124 PetriNetUnfolderBase]: 66/520 cut-off events. [2023-08-25 03:59:55,178 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-25 03:59:55,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 520 events. 66/520 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2000 event pairs, 1 based on Foata normal form. 0/422 useless extension candidates. Maximal degree in co-relation 349. Up to 16 conditions per place. [2023-08-25 03:59:55,194 INFO L119 LiptonReduction]: Number of co-enabled transitions 30096 [2023-08-25 03:59:58,257 INFO L134 LiptonReduction]: Checked pairs total: 118314 [2023-08-25 03:59:58,257 INFO L136 LiptonReduction]: Total number of compositions: 164 [2023-08-25 03:59:58,258 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 03:59:58,259 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;@742dfb02, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 03:59:58,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-25 03:59:58,260 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 03:59:58,260 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2023-08-25 03:59:58,260 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:59:58,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:58,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 03:59:58,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 17 more)] === [2023-08-25 03:59:58,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:58,265 INFO L85 PathProgramCache]: Analyzing trace with hash 43368435, now seen corresponding path program 1 times [2023-08-25 03:59:58,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:58,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507499966] [2023-08-25 03:59:58,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:58,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:59:58,307 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 03:59:58,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:59:58,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507499966] [2023-08-25 03:59:58,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507499966] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:59:58,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:59:58,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:59:58,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489856985] [2023-08-25 03:59:58,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:59:58,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:59:58,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:59:58,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:59:58,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:59:58,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 406 [2023-08-25 03:59:58,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 118 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states 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 03:59:58,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:59:58,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 406 [2023-08-25 03:59:58,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:00:02,887 INFO L124 PetriNetUnfolderBase]: 48690/84538 cut-off events. [2023-08-25 04:00:02,887 INFO L125 PetriNetUnfolderBase]: For 1594/1594 co-relation queries the response was YES. [2023-08-25 04:00:02,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153066 conditions, 84538 events. 48690/84538 cut-off events. For 1594/1594 co-relation queries the response was YES. Maximal size of possible extension queue 2209. Compared 807868 event pairs, 30561 based on Foata normal form. 12784/87369 useless extension candidates. Maximal degree in co-relation 10770. Up to 67428 conditions per place. [2023-08-25 04:00:03,295 INFO L140 encePairwiseOnDemand]: 380/406 looper letters, 60 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2023-08-25 04:00:03,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 107 transitions, 368 flow [2023-08-25 04:00:03,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:00:03,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:00:03,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 701 transitions. [2023-08-25 04:00:03,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5755336617405583 [2023-08-25 04:00:03,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 701 transitions. [2023-08-25 04:00:03,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 701 transitions. [2023-08-25 04:00:03,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:00:03,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 701 transitions. [2023-08-25 04:00:03,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 0 states 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 04:00:03,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 406.0) internal successors, (1624), 4 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states 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 04:00:03,301 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 406.0) internal successors, (1624), 4 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states 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 04:00:03,302 INFO L175 Difference]: Start difference. First operand has 100 places, 118 transitions, 266 flow. Second operand 3 states and 701 transitions. [2023-08-25 04:00:03,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 107 transitions, 368 flow [2023-08-25 04:00:03,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 107 transitions, 368 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:00:03,306 INFO L231 Difference]: Finished difference. Result has 101 places, 96 transitions, 234 flow [2023-08-25 04:00:03,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=406, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=101, PETRI_TRANSITIONS=96} [2023-08-25 04:00:03,308 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 1 predicate places. [2023-08-25 04:00:03,308 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 96 transitions, 234 flow [2023-08-25 04:00:03,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states 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 04:00:03,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:00:03,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:00:03,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 04:00:03,309 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 17 more)] === [2023-08-25 04:00:03,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:00:03,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1416011256, now seen corresponding path program 1 times [2023-08-25 04:00:03,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:00:03,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501128696] [2023-08-25 04:00:03,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:00:03,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:00:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:00:03,330 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 04:00:03,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:00:03,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501128696] [2023-08-25 04:00:03,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501128696] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:00:03,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:00:03,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:00:03,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293971086] [2023-08-25 04:00:03,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:00:03,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:00:03,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:00:03,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:00:03,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:00:03,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 406 [2023-08-25 04:00:03,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 96 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states 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 04:00:03,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:00:03,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 406 [2023-08-25 04:00:03,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:00:37,585 INFO L124 PetriNetUnfolderBase]: 464683/681147 cut-off events. [2023-08-25 04:00:37,585 INFO L125 PetriNetUnfolderBase]: For 26600/26600 co-relation queries the response was YES. [2023-08-25 04:00:38,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1358937 conditions, 681147 events. 464683/681147 cut-off events. For 26600/26600 co-relation queries the response was YES. Maximal size of possible extension queue 11607. Compared 6021184 event pairs, 195969 based on Foata normal form. 0/552285 useless extension candidates. Maximal degree in co-relation 1358815. Up to 325242 conditions per place. [2023-08-25 04:00:40,985 INFO L140 encePairwiseOnDemand]: 379/406 looper letters, 125 selfloop transitions, 20 changer transitions 0/164 dead transitions. [2023-08-25 04:00:40,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 164 transitions, 690 flow [2023-08-25 04:00:40,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:00:40,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:00:40,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 666 transitions. [2023-08-25 04:00:40,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5467980295566502 [2023-08-25 04:00:40,989 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 666 transitions. [2023-08-25 04:00:40,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 666 transitions. [2023-08-25 04:00:40,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:00:40,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 666 transitions. [2023-08-25 04:00:40,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 04:00:40,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 406.0) internal successors, (1624), 4 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states 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 04:00:40,992 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 406.0) internal successors, (1624), 4 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states 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 04:00:40,992 INFO L175 Difference]: Start difference. First operand has 101 places, 96 transitions, 234 flow. Second operand 3 states and 666 transitions. [2023-08-25 04:00:40,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 164 transitions, 690 flow [2023-08-25 04:00:41,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 164 transitions, 687 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 04:00:41,043 INFO L231 Difference]: Finished difference. Result has 104 places, 116 transitions, 406 flow [2023-08-25 04:00:41,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=406, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=406, PETRI_PLACES=104, PETRI_TRANSITIONS=116} [2023-08-25 04:00:41,045 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 4 predicate places. [2023-08-25 04:00:41,045 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 116 transitions, 406 flow [2023-08-25 04:00:41,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states 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 04:00:41,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:00:41,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:00:41,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 04:00:41,045 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 17 more)] === [2023-08-25 04:00:41,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:00:41,046 INFO L85 PathProgramCache]: Analyzing trace with hash -893096307, now seen corresponding path program 1 times [2023-08-25 04:00:41,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:00:41,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414864086] [2023-08-25 04:00:41,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:00:41,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:00:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:00:41,098 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 04:00:41,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:00:41,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414864086] [2023-08-25 04:00:41,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414864086] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:00:41,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080265156] [2023-08-25 04:00:41,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:00:41,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:00:41,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:00:41,100 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 04:00:41,102 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 04:00:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:00:41,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 04:00:41,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:00:41,186 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 04:00:41,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 04:00:41,200 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 04:00:41,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080265156] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 04:00:41,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 04:00:41,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-25 04:00:41,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691623855] [2023-08-25 04:00:41,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 04:00:41,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 04:00:41,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:00:41,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 04:00:41,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 04:00:41,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 406 [2023-08-25 04:00:41,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 116 transitions, 406 flow. Second operand has 7 states, 7 states have (on average 205.28571428571428) internal successors, (1437), 7 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states 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 04:00:41,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:00:41,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 406 [2023-08-25 04:00:41,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:00:44,357 INFO L124 PetriNetUnfolderBase]: 30211/54142 cut-off events. [2023-08-25 04:00:44,358 INFO L125 PetriNetUnfolderBase]: For 41608/43187 co-relation queries the response was YES. [2023-08-25 04:00:44,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136151 conditions, 54142 events. 30211/54142 cut-off events. For 41608/43187 co-relation queries the response was YES. Maximal size of possible extension queue 1744. Compared 522016 event pairs, 2471 based on Foata normal form. 5155/56113 useless extension candidates. Maximal degree in co-relation 14762. Up to 30848 conditions per place. [2023-08-25 04:00:44,631 INFO L140 encePairwiseOnDemand]: 402/406 looper letters, 116 selfloop transitions, 4 changer transitions 0/172 dead transitions. [2023-08-25 04:00:44,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 172 transitions, 813 flow [2023-08-25 04:00:44,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 04:00:44,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 04:00:44,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1325 transitions. [2023-08-25 04:00:44,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439244663382594 [2023-08-25 04:00:44,634 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1325 transitions. [2023-08-25 04:00:44,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1325 transitions. [2023-08-25 04:00:44,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:00:44,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1325 transitions. [2023-08-25 04:00:44,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 220.83333333333334) internal successors, (1325), 6 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states 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 04:00:44,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 406.0) internal successors, (2842), 7 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states 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 04:00:44,647 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 406.0) internal successors, (2842), 7 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states 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 04:00:44,648 INFO L175 Difference]: Start difference. First operand has 104 places, 116 transitions, 406 flow. Second operand 6 states and 1325 transitions. [2023-08-25 04:00:44,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 172 transitions, 813 flow [2023-08-25 04:00:44,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 172 transitions, 743 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-25 04:00:44,699 INFO L231 Difference]: Finished difference. Result has 93 places, 97 transitions, 309 flow [2023-08-25 04:00:44,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=406, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=309, PETRI_PLACES=93, PETRI_TRANSITIONS=97} [2023-08-25 04:00:44,700 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, -7 predicate places. [2023-08-25 04:00:44,701 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 97 transitions, 309 flow [2023-08-25 04:00:44,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 205.28571428571428) internal successors, (1437), 7 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states 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 04:00:44,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:00:44,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:00:44,707 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 04:00:44,908 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,SelfDestructingSolverStorable8 [2023-08-25 04:00:44,908 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 17 more)] === [2023-08-25 04:00:44,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:00:44,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1706204701, now seen corresponding path program 1 times [2023-08-25 04:00:44,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:00:44,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641052176] [2023-08-25 04:00:44,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:00:44,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:00:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:00:44,932 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 04:00:44,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:00:44,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641052176] [2023-08-25 04:00:44,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641052176] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:00:44,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:00:44,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:00:44,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440491470] [2023-08-25 04:00:44,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:00:44,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:00:44,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:00:44,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:00:44,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:00:44,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 406 [2023-08-25 04:00:44,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 97 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 04:00:44,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:00:44,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 406 [2023-08-25 04:00:44,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:00:50,521 INFO L124 PetriNetUnfolderBase]: 74297/109896 cut-off events. [2023-08-25 04:00:50,522 INFO L125 PetriNetUnfolderBase]: For 52459/53044 co-relation queries the response was YES. [2023-08-25 04:00:50,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273606 conditions, 109896 events. 74297/109896 cut-off events. For 52459/53044 co-relation queries the response was YES. Maximal size of possible extension queue 2420. Compared 834966 event pairs, 54959 based on Foata normal form. 0/94512 useless extension candidates. Maximal degree in co-relation 177216. Up to 100673 conditions per place. [2023-08-25 04:00:51,059 INFO L140 encePairwiseOnDemand]: 395/406 looper letters, 114 selfloop transitions, 19 changer transitions 0/151 dead transitions. [2023-08-25 04:00:51,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 151 transitions, 761 flow [2023-08-25 04:00:51,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:00:51,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:00:51,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 610 transitions. [2023-08-25 04:00:51,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5008210180623974 [2023-08-25 04:00:51,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 610 transitions. [2023-08-25 04:00:51,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 610 transitions. [2023-08-25 04:00:51,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:00:51,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 610 transitions. [2023-08-25 04:00:51,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:00:51,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 406.0) internal successors, (1624), 4 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states 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 04:00:51,064 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 406.0) internal successors, (1624), 4 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states 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 04:00:51,065 INFO L175 Difference]: Start difference. First operand has 93 places, 97 transitions, 309 flow. Second operand 3 states and 610 transitions. [2023-08-25 04:00:51,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 151 transitions, 761 flow [2023-08-25 04:00:51,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 151 transitions, 746 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-25 04:00:51,083 INFO L231 Difference]: Finished difference. Result has 93 places, 114 transitions, 459 flow [2023-08-25 04:00:51,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=406, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=459, PETRI_PLACES=93, PETRI_TRANSITIONS=114} [2023-08-25 04:00:51,083 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, -7 predicate places. [2023-08-25 04:00:51,083 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 114 transitions, 459 flow [2023-08-25 04:00:51,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 04:00:51,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:00:51,084 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-25 04:00:51,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 04:00:51,084 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 17 more)] === [2023-08-25 04:00:51,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:00:51,084 INFO L85 PathProgramCache]: Analyzing trace with hash -464112184, now seen corresponding path program 1 times [2023-08-25 04:00:51,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:00:51,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140466943] [2023-08-25 04:00:51,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:00:51,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:00:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:00:51,117 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 04:00:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:00:51,141 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 04:00:51,142 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 04:00:51,142 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2023-08-25 04:00:51,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2023-08-25 04:00:51,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2023-08-25 04:00:51,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (16 of 20 remaining) [2023-08-25 04:00:51,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2023-08-25 04:00:51,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2023-08-25 04:00:51,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2023-08-25 04:00:51,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2023-08-25 04:00:51,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2023-08-25 04:00:51,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2023-08-25 04:00:51,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2023-08-25 04:00:51,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2023-08-25 04:00:51,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2023-08-25 04:00:51,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2023-08-25 04:00:51,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2023-08-25 04:00:51,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2023-08-25 04:00:51,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2023-08-25 04:00:51,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2023-08-25 04:00:51,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2023-08-25 04:00:51,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2023-08-25 04:00:51,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-25 04:00:51,144 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-25 04:00:51,144 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 04:00:51,144 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-25 04:00:51,165 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-25 04:00:51,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 288 transitions, 620 flow [2023-08-25 04:00:51,407 INFO L124 PetriNetUnfolderBase]: 101/791 cut-off events. [2023-08-25 04:00:51,407 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-25 04:00:51,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 846 conditions, 791 events. 101/791 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3417 event pairs, 6 based on Foata normal form. 0/648 useless extension candidates. Maximal degree in co-relation 540. Up to 32 conditions per place. [2023-08-25 04:00:51,411 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 288 transitions, 620 flow [2023-08-25 04:00:51,414 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 288 transitions, 620 flow [2023-08-25 04:00:51,414 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:00:51,414 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 260 places, 288 transitions, 620 flow [2023-08-25 04:00:51,414 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 260 places, 288 transitions, 620 flow [2023-08-25 04:00:51,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 288 transitions, 620 flow [2023-08-25 04:00:51,468 INFO L124 PetriNetUnfolderBase]: 101/791 cut-off events. [2023-08-25 04:00:51,468 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-25 04:00:51,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 846 conditions, 791 events. 101/791 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3417 event pairs, 6 based on Foata normal form. 0/648 useless extension candidates. Maximal degree in co-relation 540. Up to 32 conditions per place. [2023-08-25 04:00:51,487 INFO L119 LiptonReduction]: Number of co-enabled transitions 48400 [2023-08-25 04:00:54,592 INFO L134 LiptonReduction]: Checked pairs total: 208878 [2023-08-25 04:00:54,592 INFO L136 LiptonReduction]: Total number of compositions: 182 [2023-08-25 04:00:54,593 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:00:54,593 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;@742dfb02, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:00:54,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-25 04:00:54,594 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:00:54,594 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2023-08-25 04:00:54,594 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:00:54,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:00:54,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 04:00:54,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-25 04:00:54,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:00:54,595 INFO L85 PathProgramCache]: Analyzing trace with hash 59252920, now seen corresponding path program 1 times [2023-08-25 04:00:54,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:00:54,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997626713] [2023-08-25 04:00:54,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:00:54,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:00:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:00:54,614 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 04:00:54,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:00:54,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997626713] [2023-08-25 04:00:54,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997626713] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:00:54,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:00:54,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:00:54,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417390043] [2023-08-25 04:00:54,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:00:54,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:00:54,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:00:54,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:00:54,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:00:54,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 470 [2023-08-25 04:00:54,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 151 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 242.33333333333334) internal successors, (727), 3 states have internal predecessors, (727), 0 states have call successors, (0), 0 states 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 04:00:54,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:00:54,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 470 [2023-08-25 04:00:54,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:02:14,195 INFO L124 PetriNetUnfolderBase]: 740884/1121219 cut-off events. [2023-08-25 04:02:14,195 INFO L125 PetriNetUnfolderBase]: For 26848/26848 co-relation queries the response was YES. [2023-08-25 04:02:16,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2090536 conditions, 1121219 events. 740884/1121219 cut-off events. For 26848/26848 co-relation queries the response was YES. Maximal size of possible extension queue 21648. Compared 11585358 event pairs, 535336 based on Foata normal form. 163631/1169370 useless extension candidates. Maximal degree in co-relation 153864. Up to 954113 conditions per place. [2023-08-25 04:02:22,061 INFO L140 encePairwiseOnDemand]: 437/470 looper letters, 72 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2023-08-25 04:02:22,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 132 transitions, 456 flow [2023-08-25 04:02:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:02:22,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:02:22,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 834 transitions. [2023-08-25 04:02:22,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5914893617021276 [2023-08-25 04:02:22,064 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 834 transitions. [2023-08-25 04:02:22,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 834 transitions. [2023-08-25 04:02:22,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:02:22,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 834 transitions. [2023-08-25 04:02:22,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states 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 04:02:22,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 470.0) internal successors, (1880), 4 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states 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 04:02:22,069 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 470.0) internal successors, (1880), 4 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states 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 04:02:22,069 INFO L175 Difference]: Start difference. First operand has 127 places, 151 transitions, 346 flow. Second operand 3 states and 834 transitions. [2023-08-25 04:02:22,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 132 transitions, 456 flow [2023-08-25 04:02:22,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 132 transitions, 456 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:02:22,084 INFO L231 Difference]: Finished difference. Result has 127 places, 121 transitions, 298 flow [2023-08-25 04:02:22,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=127, PETRI_TRANSITIONS=121} [2023-08-25 04:02:22,085 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 0 predicate places. [2023-08-25 04:02:22,085 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 121 transitions, 298 flow [2023-08-25 04:02:22,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.33333333333334) internal successors, (727), 3 states have internal predecessors, (727), 0 states have call successors, (0), 0 states 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 04:02:22,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:02:22,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:02:22,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-25 04:02:22,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-25 04:02:22,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:02:22,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1488753046, now seen corresponding path program 1 times [2023-08-25 04:02:22,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:02:22,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768004349] [2023-08-25 04:02:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:02:22,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:02:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:02:22,285 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 04:02:22,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:02:22,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768004349] [2023-08-25 04:02:22,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768004349] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:02:22,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:02:22,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:02:22,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013556223] [2023-08-25 04:02:22,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:02:22,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:02:22,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:02:22,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:02:22,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:02:22,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 470 [2023-08-25 04:02:22,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 121 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states 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 04:02:22,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:02:22,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 470 [2023-08-25 04:02:22,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand