/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_08-cond_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 04:01:14,919 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 04:01:14,995 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 04:01:15,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 04:01:15,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 04:01:15,031 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 04:01:15,032 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 04:01:15,032 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 04:01:15,033 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 04:01:15,036 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 04:01:15,037 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 04:01:15,037 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 04:01:15,037 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 04:01:15,038 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 04:01:15,039 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 04:01:15,039 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 04:01:15,039 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 04:01:15,039 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 04:01:15,039 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 04:01:15,040 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 04:01:15,040 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 04:01:15,040 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 04:01:15,040 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 04:01:15,041 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 04:01:15,041 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 04:01:15,042 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 04:01:15,042 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 04:01:15,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 04:01:15,042 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 04:01:15,042 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 04:01:15,043 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 04:01:15,044 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 04:01:15,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 04:01:15,044 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 04:01:15,044 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 04:01:15,044 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 04:01:15,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 04:01:15,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 04:01:15,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 04:01:15,376 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 04:01:15,377 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 04:01:15,378 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_08-cond_racefree.i [2023-08-25 04:01:16,501 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 04:01:16,816 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 04:01:16,820 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_08-cond_racefree.i [2023-08-25 04:01:16,841 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ac449e3a/eca921dccd5a4ebab1e0d71374bccaa0/FLAG08e9e2d9d [2023-08-25 04:01:16,856 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ac449e3a/eca921dccd5a4ebab1e0d71374bccaa0 [2023-08-25 04:01:16,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 04:01:16,861 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 04:01:16,865 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 04:01:16,865 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 04:01:16,867 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 04:01:16,869 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 04:01:16" (1/1) ... [2023-08-25 04:01:16,870 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68b8e4fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:01:16, skipping insertion in model container [2023-08-25 04:01:16,870 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 04:01:16" (1/1) ... [2023-08-25 04:01:16,923 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 04:01:17,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 04:01:17,347 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 04:01:17,365 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [119] [2023-08-25 04:01:17,384 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [481] [2023-08-25 04:01:17,384 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [481] [2023-08-25 04:01:17,399 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 04:01:17,452 INFO L206 MainTranslator]: Completed translation [2023-08-25 04:01:17,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:01:17 WrapperNode [2023-08-25 04:01:17,452 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 04:01:17,453 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 04:01:17,453 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 04:01:17,453 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 04:01:17,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:01:17" (1/1) ... [2023-08-25 04:01:17,480 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:01:17" (1/1) ... [2023-08-25 04:01:17,504 INFO L138 Inliner]: procedures = 270, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 102 [2023-08-25 04:01:17,504 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 04:01:17,505 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 04:01:17,505 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 04:01:17,505 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 04:01:17,517 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:01:17" (1/1) ... [2023-08-25 04:01:17,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:01:17" (1/1) ... [2023-08-25 04:01:17,521 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:01:17" (1/1) ... [2023-08-25 04:01:17,521 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:01:17" (1/1) ... [2023-08-25 04:01:17,527 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:01:17" (1/1) ... [2023-08-25 04:01:17,530 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:01:17" (1/1) ... [2023-08-25 04:01:17,532 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:01:17" (1/1) ... [2023-08-25 04:01:17,533 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:01:17" (1/1) ... [2023-08-25 04:01:17,536 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 04:01:17,537 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 04:01:17,537 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 04:01:17,537 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 04:01:17,538 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:01:17" (1/1) ... [2023-08-25 04:01:17,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 04:01:17,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:01:17,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 04:01:17,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 04:01:17,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 04:01:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 04:01:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 04:01:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 04:01:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 04:01:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 04:01:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-25 04:01:17,614 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-25 04:01:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 04:01:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 04:01:17,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 04:01:17,616 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 04:01:17,730 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 04:01:17,732 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 04:01:17,998 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 04:01:18,005 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 04:01:18,006 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-25 04:01:18,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 04:01:18 BoogieIcfgContainer [2023-08-25 04:01:18,007 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 04:01:18,009 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 04:01:18,009 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 04:01:18,012 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 04:01:18,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 04:01:16" (1/3) ... [2023-08-25 04:01:18,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a48c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 04:01:18, skipping insertion in model container [2023-08-25 04:01:18,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:01:17" (2/3) ... [2023-08-25 04:01:18,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a48c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 04:01:18, skipping insertion in model container [2023-08-25 04:01:18,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 04:01:18" (3/3) ... [2023-08-25 04:01:18,017 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2023-08-25 04:01:18,032 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 04:01:18,032 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-25 04:01:18,032 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 04:01:18,104 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-25 04:01:18,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 152 transitions, 312 flow [2023-08-25 04:01:18,238 INFO L124 PetriNetUnfolderBase]: 25/209 cut-off events. [2023-08-25 04:01:18,238 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 04:01:18,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 209 events. 25/209 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 593 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 106. Up to 6 conditions per place. [2023-08-25 04:01:18,245 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 152 transitions, 312 flow [2023-08-25 04:01:18,255 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 152 transitions, 312 flow [2023-08-25 04:01:18,258 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:01:18,272 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 152 transitions, 312 flow [2023-08-25 04:01:18,276 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 152 transitions, 312 flow [2023-08-25 04:01:18,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 152 transitions, 312 flow [2023-08-25 04:01:18,329 INFO L124 PetriNetUnfolderBase]: 25/209 cut-off events. [2023-08-25 04:01:18,329 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 04:01:18,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 209 events. 25/209 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 593 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 106. Up to 6 conditions per place. [2023-08-25 04:01:18,336 INFO L119 LiptonReduction]: Number of co-enabled transitions 5544 [2023-08-25 04:01:21,758 INFO L134 LiptonReduction]: Checked pairs total: 13838 [2023-08-25 04:01:21,759 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-08-25 04:01:21,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:01:21,776 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;@221b11fb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:01:21,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-25 04:01:21,781 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:01:21,781 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2023-08-25 04:01:21,781 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:01:21,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:01:21,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 04:01:21,782 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 04:01:21,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:01:21,787 INFO L85 PathProgramCache]: Analyzing trace with hash 17816663, now seen corresponding path program 1 times [2023-08-25 04:01:21,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:01:21,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313889085] [2023-08-25 04:01:21,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:01:21,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:01:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:01:22,033 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 04:01:22,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:01:22,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313889085] [2023-08-25 04:01:22,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313889085] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:01:22,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:01:22,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:01:22,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757731458] [2023-08-25 04:01:22,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:01:22,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:01:22,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:01:22,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:01:22,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:01:22,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 283 [2023-08-25 04:01:22,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 54 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 04:01:22,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:01:22,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 283 [2023-08-25 04:01:22,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:01:22,179 INFO L124 PetriNetUnfolderBase]: 145/368 cut-off events. [2023-08-25 04:01:22,179 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 04:01:22,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 368 events. 145/368 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1805 event pairs, 0 based on Foata normal form. 37/335 useless extension candidates. Maximal degree in co-relation 648. Up to 293 conditions per place. [2023-08-25 04:01:22,187 INFO L140 encePairwiseOnDemand]: 268/283 looper letters, 37 selfloop transitions, 2 changer transitions 2/54 dead transitions. [2023-08-25 04:01:22,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 198 flow [2023-08-25 04:01:22,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:01:22,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:01:22,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2023-08-25 04:01:22,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265017667844523 [2023-08-25 04:01:22,208 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2023-08-25 04:01:22,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2023-08-25 04:01:22,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:01:22,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2023-08-25 04:01:22,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states 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 04:01:22,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:01:22,224 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:01:22,226 INFO L175 Difference]: Start difference. First operand has 45 places, 54 transitions, 116 flow. Second operand 3 states and 447 transitions. [2023-08-25 04:01:22,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 198 flow [2023-08-25 04:01:22,230 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 04:01:22,232 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 93 flow [2023-08-25 04:01:22,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, 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 04:01:22,237 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2023-08-25 04:01:22,237 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 93 flow [2023-08-25 04:01:22,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 04:01:22,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:01:22,238 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-25 04:01:22,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 04:01:22,239 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 04:01:22,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:01:22,247 INFO L85 PathProgramCache]: Analyzing trace with hash -96558803, now seen corresponding path program 1 times [2023-08-25 04:01:22,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:01:22,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145257128] [2023-08-25 04:01:22,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:01:22,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:01:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:01:22,298 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 04:01:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:01:22,326 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 04:01:22,326 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 04:01:22,328 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2023-08-25 04:01:22,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2023-08-25 04:01:22,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2023-08-25 04:01:22,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (8 of 12 remaining) [2023-08-25 04:01:22,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2023-08-25 04:01:22,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2023-08-25 04:01:22,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2023-08-25 04:01:22,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2023-08-25 04:01:22,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2023-08-25 04:01:22,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2023-08-25 04:01:22,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2023-08-25 04:01:22,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2023-08-25 04:01:22,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 04:01:22,332 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-25 04:01:22,334 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 04:01:22,334 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 04:01:22,354 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 04:01:22,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 198 transitions, 414 flow [2023-08-25 04:01:22,391 INFO L124 PetriNetUnfolderBase]: 43/343 cut-off events. [2023-08-25 04:01:22,391 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 04:01:22,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 343 events. 43/343 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1204 event pairs, 0 based on Foata normal form. 0/278 useless extension candidates. Maximal degree in co-relation 211. Up to 9 conditions per place. [2023-08-25 04:01:22,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 198 transitions, 414 flow [2023-08-25 04:01:22,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 198 transitions, 414 flow [2023-08-25 04:01:22,397 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:01:22,397 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 198 transitions, 414 flow [2023-08-25 04:01:22,398 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 198 transitions, 414 flow [2023-08-25 04:01:22,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 198 transitions, 414 flow [2023-08-25 04:01:22,434 INFO L124 PetriNetUnfolderBase]: 43/343 cut-off events. [2023-08-25 04:01:22,434 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 04:01:22,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 343 events. 43/343 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1204 event pairs, 0 based on Foata normal form. 0/278 useless extension candidates. Maximal degree in co-relation 211. Up to 9 conditions per place. [2023-08-25 04:01:22,445 INFO L119 LiptonReduction]: Number of co-enabled transitions 15928 [2023-08-25 04:01:25,577 INFO L134 LiptonReduction]: Checked pairs total: 56187 [2023-08-25 04:01:25,577 INFO L136 LiptonReduction]: Total number of compositions: 144 [2023-08-25 04:01:25,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:01:25,580 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;@221b11fb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:01:25,580 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-25 04:01:25,582 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:01:25,582 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2023-08-25 04:01:25,582 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:01:25,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:01:25,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 04:01:25,583 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 04:01:25,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:01:25,583 INFO L85 PathProgramCache]: Analyzing trace with hash 29762901, now seen corresponding path program 1 times [2023-08-25 04:01:25,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:01:25,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460033675] [2023-08-25 04:01:25,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:01:25,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:01:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:01:25,617 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 04:01:25,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:01:25,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460033675] [2023-08-25 04:01:25,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460033675] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:01:25,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:01:25,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:01:25,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571189866] [2023-08-25 04:01:25,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:01:25,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:01:25,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:01:25,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:01:25,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:01:25,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 342 [2023-08-25 04:01:25,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 87 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states 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 04:01:25,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:01:25,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 342 [2023-08-25 04:01:25,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:01:26,139 INFO L124 PetriNetUnfolderBase]: 2834/5859 cut-off events. [2023-08-25 04:01:26,140 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2023-08-25 04:01:26,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10409 conditions, 5859 events. 2834/5859 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 45332 event pairs, 2394 based on Foata normal form. 694/5700 useless extension candidates. Maximal degree in co-relation 6872. Up to 4467 conditions per place. [2023-08-25 04:01:26,171 INFO L140 encePairwiseOnDemand]: 322/342 looper letters, 48 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2023-08-25 04:01:26,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 82 transitions, 282 flow [2023-08-25 04:01:26,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:01:26,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:01:26,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2023-08-25 04:01:26,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5604288499025342 [2023-08-25 04:01:26,174 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2023-08-25 04:01:26,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2023-08-25 04:01:26,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:01:26,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2023-08-25 04:01:26,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:01:26,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 04:01:26,179 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 04:01:26,179 INFO L175 Difference]: Start difference. First operand has 74 places, 87 transitions, 192 flow. Second operand 3 states and 575 transitions. [2023-08-25 04:01:26,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 82 transitions, 282 flow [2023-08-25 04:01:26,181 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 04:01:26,182 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 172 flow [2023-08-25 04:01:26,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, 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 04:01:26,183 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 1 predicate places. [2023-08-25 04:01:26,183 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 172 flow [2023-08-25 04:01:26,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states 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 04:01:26,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:01:26,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:01:26,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 04:01:26,184 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 04:01:26,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:01:26,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1673529965, now seen corresponding path program 1 times [2023-08-25 04:01:26,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:01:26,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791667820] [2023-08-25 04:01:26,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:01:26,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:01:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:01:26,214 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 04:01:26,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:01:26,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791667820] [2023-08-25 04:01:26,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791667820] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:01:26,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:01:26,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:01:26,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936360562] [2023-08-25 04:01:26,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:01:26,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:01:26,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:01:26,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:01:26,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:01:26,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 342 [2023-08-25 04:01:26,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states 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 04:01:26,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:01:26,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 342 [2023-08-25 04:01:26,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:01:28,093 INFO L124 PetriNetUnfolderBase]: 13535/23364 cut-off events. [2023-08-25 04:01:28,093 INFO L125 PetriNetUnfolderBase]: For 979/979 co-relation queries the response was YES. [2023-08-25 04:01:28,143 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 178311 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 04:01:28,254 INFO L140 encePairwiseOnDemand]: 323/342 looper letters, 93 selfloop transitions, 14 changer transitions 0/121 dead transitions. [2023-08-25 04:01:28,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 121 transitions, 506 flow [2023-08-25 04:01:28,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:01:28,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:01:28,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 554 transitions. [2023-08-25 04:01:28,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5399610136452242 [2023-08-25 04:01:28,256 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 554 transitions. [2023-08-25 04:01:28,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 554 transitions. [2023-08-25 04:01:28,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:01:28,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 554 transitions. [2023-08-25 04:01:28,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:01:28,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 04:01:28,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 04:01:28,261 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 172 flow. Second operand 3 states and 554 transitions. [2023-08-25 04:01:28,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 121 transitions, 506 flow [2023-08-25 04:01:28,264 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 04:01:28,265 INFO L231 Difference]: Finished difference. Result has 78 places, 85 transitions, 292 flow [2023-08-25 04:01:28,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, 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 04:01:28,266 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 4 predicate places. [2023-08-25 04:01:28,266 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 85 transitions, 292 flow [2023-08-25 04:01:28,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states 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 04:01:28,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:01:28,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:01:28,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 04:01:28,267 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 04:01:28,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:01:28,268 INFO L85 PathProgramCache]: Analyzing trace with hash 277470027, now seen corresponding path program 1 times [2023-08-25 04:01:28,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:01:28,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973417272] [2023-08-25 04:01:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:01:28,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:01:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:01:28,348 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 04:01:28,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:01:28,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973417272] [2023-08-25 04:01:28,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973417272] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:01:28,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736216333] [2023-08-25 04:01:28,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:01:28,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:01:28,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:01:28,353 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 04:01:28,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 04:01:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:01:28,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 04:01:28,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:01:28,486 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 04:01:28,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 04:01:28,504 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 04:01:28,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736216333] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 04:01:28,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 04:01:28,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-25 04:01:28,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391834316] [2023-08-25 04:01:28,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 04:01:28,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 04:01:28,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:01:28,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 04:01:28,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 04:01:28,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 342 [2023-08-25 04:01:28,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 85 transitions, 292 flow. Second operand has 7 states, 7 states have (on average 169.28571428571428) internal successors, (1185), 7 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states 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 04:01:28,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:01:28,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 342 [2023-08-25 04:01:28,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:01:28,780 INFO L124 PetriNetUnfolderBase]: 895/2078 cut-off events. [2023-08-25 04:01:28,781 INFO L125 PetriNetUnfolderBase]: For 1294/1331 co-relation queries the response was YES. [2023-08-25 04:01:28,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4822 conditions, 2078 events. 895/2078 cut-off events. For 1294/1331 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 14233 event pairs, 177 based on Foata normal form. 214/2201 useless extension candidates. Maximal degree in co-relation 1340. Up to 1066 conditions per place. [2023-08-25 04:01:28,795 INFO L140 encePairwiseOnDemand]: 338/342 looper letters, 65 selfloop transitions, 3 changer transitions 0/103 dead transitions. [2023-08-25 04:01:28,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 103 transitions, 482 flow [2023-08-25 04:01:28,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 04:01:28,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 04:01:28,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 897 transitions. [2023-08-25 04:01:28,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245614035087719 [2023-08-25 04:01:28,799 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 897 transitions. [2023-08-25 04:01:28,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 897 transitions. [2023-08-25 04:01:28,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:01:28,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 897 transitions. [2023-08-25 04:01:28,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.4) internal successors, (897), 5 states have internal predecessors, (897), 0 states have call successors, (0), 0 states 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 04:01:28,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 342.0) internal successors, (2052), 6 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states 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 04:01:28,806 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 342.0) internal successors, (2052), 6 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states 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 04:01:28,806 INFO L175 Difference]: Start difference. First operand has 78 places, 85 transitions, 292 flow. Second operand 5 states and 897 transitions. [2023-08-25 04:01:28,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 103 transitions, 482 flow [2023-08-25 04:01:28,810 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 04:01:28,811 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 210 flow [2023-08-25 04:01:28,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, 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 04:01:28,812 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -8 predicate places. [2023-08-25 04:01:28,812 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 210 flow [2023-08-25 04:01:28,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 169.28571428571428) internal successors, (1185), 7 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states 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 04:01:28,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:01:28,813 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-25 04:01:28,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 04:01:29,020 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 04:01:29,020 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 04:01:29,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:01:29,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1006428107, now seen corresponding path program 1 times [2023-08-25 04:01:29,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:01:29,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181942675] [2023-08-25 04:01:29,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:01:29,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:01:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:01:29,035 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 04:01:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:01:29,049 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 04:01:29,049 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 04:01:29,049 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2023-08-25 04:01:29,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2023-08-25 04:01:29,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2023-08-25 04:01:29,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (12 of 16 remaining) [2023-08-25 04:01:29,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2023-08-25 04:01:29,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2023-08-25 04:01:29,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2023-08-25 04:01:29,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2023-08-25 04:01:29,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2023-08-25 04:01:29,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2023-08-25 04:01:29,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2023-08-25 04:01:29,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2023-08-25 04:01:29,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2023-08-25 04:01:29,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2023-08-25 04:01:29,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2023-08-25 04:01:29,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2023-08-25 04:01:29,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 04:01:29,052 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-25 04:01:29,053 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 04:01:29,053 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-25 04:01:29,078 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-25 04:01:29,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 244 transitions, 518 flow [2023-08-25 04:01:29,150 INFO L124 PetriNetUnfolderBase]: 66/522 cut-off events. [2023-08-25 04:01:29,150 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-25 04:01:29,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 522 events. 66/522 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2007 event pairs, 1 based on Foata normal form. 0/424 useless extension candidates. Maximal degree in co-relation 351. Up to 16 conditions per place. [2023-08-25 04:01:29,156 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 244 transitions, 518 flow [2023-08-25 04:01:29,160 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 244 transitions, 518 flow [2023-08-25 04:01:29,160 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:01:29,160 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 244 transitions, 518 flow [2023-08-25 04:01:29,160 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 244 transitions, 518 flow [2023-08-25 04:01:29,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 244 transitions, 518 flow [2023-08-25 04:01:29,227 INFO L124 PetriNetUnfolderBase]: 66/522 cut-off events. [2023-08-25 04:01:29,228 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-25 04:01:29,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 522 events. 66/522 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2007 event pairs, 1 based on Foata normal form. 0/424 useless extension candidates. Maximal degree in co-relation 351. Up to 16 conditions per place. [2023-08-25 04:01:29,254 INFO L119 LiptonReduction]: Number of co-enabled transitions 30096 [2023-08-25 04:01:32,677 INFO L134 LiptonReduction]: Checked pairs total: 119045 [2023-08-25 04:01:32,677 INFO L136 LiptonReduction]: Total number of compositions: 166 [2023-08-25 04:01:32,679 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:01:32,680 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;@221b11fb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:01:32,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-25 04:01:32,682 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:01:32,682 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2023-08-25 04:01:32,682 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:01:32,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:01:32,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 04:01:32,682 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 04:01:32,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:01:32,683 INFO L85 PathProgramCache]: Analyzing trace with hash 43802267, now seen corresponding path program 1 times [2023-08-25 04:01:32,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:01:32,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104150904] [2023-08-25 04:01:32,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:01:32,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:01:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:01:32,712 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 04:01:32,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:01:32,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104150904] [2023-08-25 04:01:32,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104150904] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:01:32,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:01:32,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:01:32,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936558730] [2023-08-25 04:01:32,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:01:32,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:01:32,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:01:32,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:01:32,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:01:32,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 410 [2023-08-25 04:01:32,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 118 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states 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 04:01:32,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:01:32,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 410 [2023-08-25 04:01:32,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:01:38,447 INFO L124 PetriNetUnfolderBase]: 48690/81108 cut-off events. [2023-08-25 04:01:38,447 INFO L125 PetriNetUnfolderBase]: For 1391/1391 co-relation queries the response was YES. [2023-08-25 04:01:38,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149552 conditions, 81108 events. 48690/81108 cut-off events. For 1391/1391 co-relation queries the response was YES. Maximal size of possible extension queue 2105. Compared 736871 event pairs, 45411 based on Foata normal form. 12784/83963 useless extension candidates. Maximal degree in co-relation 71505. Up to 67428 conditions per place. [2023-08-25 04:01:39,101 INFO L140 encePairwiseOnDemand]: 384/410 looper letters, 60 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2023-08-25 04:01:39,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 107 transitions, 368 flow [2023-08-25 04:01:39,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:01:39,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:01:39,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 707 transitions. [2023-08-25 04:01:39,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5747967479674797 [2023-08-25 04:01:39,109 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 707 transitions. [2023-08-25 04:01:39,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 707 transitions. [2023-08-25 04:01:39,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:01:39,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 707 transitions. [2023-08-25 04:01:39,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 04:01:39,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states 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 04:01:39,114 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states 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 04:01:39,115 INFO L175 Difference]: Start difference. First operand has 100 places, 118 transitions, 266 flow. Second operand 3 states and 707 transitions. [2023-08-25 04:01:39,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 107 transitions, 368 flow [2023-08-25 04:01:39,117 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 04:01:39,118 INFO L231 Difference]: Finished difference. Result has 101 places, 96 transitions, 234 flow [2023-08-25 04:01:39,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, 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 04:01:39,119 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 1 predicate places. [2023-08-25 04:01:39,119 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 96 transitions, 234 flow [2023-08-25 04:01:39,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states 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 04:01:39,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:01:39,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:01:39,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 04:01:39,120 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 04:01:39,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:01:39,120 INFO L85 PathProgramCache]: Analyzing trace with hash -932024026, now seen corresponding path program 1 times [2023-08-25 04:01:39,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:01:39,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148466125] [2023-08-25 04:01:39,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:01:39,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:01:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:01:39,145 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 04:01:39,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:01:39,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148466125] [2023-08-25 04:01:39,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148466125] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:01:39,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:01:39,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:01:39,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636983293] [2023-08-25 04:01:39,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:01:39,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:01:39,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:01:39,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:01:39,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:01:39,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 410 [2023-08-25 04:01:39,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 96 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states 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 04:01:39,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:01:39,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 410 [2023-08-25 04:01:39,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:02:19,731 INFO L124 PetriNetUnfolderBase]: 464683/681147 cut-off events. [2023-08-25 04:02:19,732 INFO L125 PetriNetUnfolderBase]: For 26600/26600 co-relation queries the response was YES. [2023-08-25 04:02:21,259 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 11585. Compared 6022469 event pairs, 195969 based on Foata normal form. 0/552276 useless extension candidates. Maximal degree in co-relation 1358815. Up to 325242 conditions per place. [2023-08-25 04:02:23,778 INFO L140 encePairwiseOnDemand]: 383/410 looper letters, 125 selfloop transitions, 20 changer transitions 0/164 dead transitions. [2023-08-25 04:02:23,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 164 transitions, 690 flow [2023-08-25 04:02:23,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:02:23,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:02:23,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 672 transitions. [2023-08-25 04:02:23,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5463414634146342 [2023-08-25 04:02:23,781 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 672 transitions. [2023-08-25 04:02:23,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 672 transitions. [2023-08-25 04:02:23,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:02:23,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 672 transitions. [2023-08-25 04:02:23,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states 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 04:02:23,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states 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 04:02:23,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states 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 04:02:23,786 INFO L175 Difference]: Start difference. First operand has 101 places, 96 transitions, 234 flow. Second operand 3 states and 672 transitions. [2023-08-25 04:02:23,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 164 transitions, 690 flow [2023-08-25 04:02:23,819 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 04:02:23,822 INFO L231 Difference]: Finished difference. Result has 104 places, 116 transitions, 406 flow [2023-08-25 04:02:23,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, 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 04:02:23,823 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 4 predicate places. [2023-08-25 04:02:23,823 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 116 transitions, 406 flow [2023-08-25 04:02:23,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states 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 04:02:23,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:02:23,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:02:23,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 04:02:23,824 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 04:02:23,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:02:23,824 INFO L85 PathProgramCache]: Analyzing trace with hash -403049618, now seen corresponding path program 1 times [2023-08-25 04:02:23,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:02:23,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724177251] [2023-08-25 04:02:23,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:02:23,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:02:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:02:23,878 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 04:02:23,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:02:23,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724177251] [2023-08-25 04:02:23,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724177251] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:02:23,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576339985] [2023-08-25 04:02:23,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:02:23,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:02:23,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:02:23,880 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 04:02:23,883 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 04:02:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:02:23,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 04:02:23,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:02:23,965 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 04:02:23,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 04:02:23,979 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 04:02:23,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576339985] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 04:02:23,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 04:02:23,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-25 04:02:23,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637741411] [2023-08-25 04:02:23,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 04:02:23,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 04:02:23,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:02:23,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 04:02:23,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 04:02:23,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 410 [2023-08-25 04:02:23,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 116 transitions, 406 flow. Second operand has 7 states, 7 states have (on average 207.28571428571428) internal successors, (1451), 7 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states 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 04:02:23,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:02:23,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 410 [2023-08-25 04:02:23,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:02:27,517 INFO L124 PetriNetUnfolderBase]: 30562/55275 cut-off events. [2023-08-25 04:02:27,517 INFO L125 PetriNetUnfolderBase]: For 37557/38783 co-relation queries the response was YES. [2023-08-25 04:02:27,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133354 conditions, 55275 events. 30562/55275 cut-off events. For 37557/38783 co-relation queries the response was YES. Maximal size of possible extension queue 1726. Compared 533145 event pairs, 7849 based on Foata normal form. 4727/56659 useless extension candidates. Maximal degree in co-relation 36747. Up to 29368 conditions per place. [2023-08-25 04:02:27,845 INFO L140 encePairwiseOnDemand]: 406/410 looper letters, 116 selfloop transitions, 4 changer transitions 0/172 dead transitions. [2023-08-25 04:02:27,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 172 transitions, 813 flow [2023-08-25 04:02:27,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 04:02:27,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 04:02:27,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1337 transitions. [2023-08-25 04:02:27,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434959349593496 [2023-08-25 04:02:27,849 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1337 transitions. [2023-08-25 04:02:27,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1337 transitions. [2023-08-25 04:02:27,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:02:27,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1337 transitions. [2023-08-25 04:02:27,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 222.83333333333334) internal successors, (1337), 6 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states 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 04:02:27,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states 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 04:02:27,856 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states 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 04:02:27,856 INFO L175 Difference]: Start difference. First operand has 104 places, 116 transitions, 406 flow. Second operand 6 states and 1337 transitions. [2023-08-25 04:02:27,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 172 transitions, 813 flow [2023-08-25 04:02:27,904 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 04:02:27,906 INFO L231 Difference]: Finished difference. Result has 93 places, 97 transitions, 309 flow [2023-08-25 04:02:27,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, 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 04:02:27,907 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, -7 predicate places. [2023-08-25 04:02:27,907 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 97 transitions, 309 flow [2023-08-25 04:02:27,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 207.28571428571428) internal successors, (1451), 7 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states 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 04:02:27,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:02:27,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:02:27,916 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 04:02:28,112 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 04:02:28,113 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 04:02:28,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:02:28,113 INFO L85 PathProgramCache]: Analyzing trace with hash 2083179882, now seen corresponding path program 1 times [2023-08-25 04:02:28,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:02:28,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794666626] [2023-08-25 04:02:28,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:02:28,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:02:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:02:28,143 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 04:02:28,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:02:28,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794666626] [2023-08-25 04:02:28,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794666626] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:02:28,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:02:28,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:02:28,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181433216] [2023-08-25 04:02:28,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:02:28,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:02:28,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:02:28,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:02:28,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:02:28,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 410 [2023-08-25 04:02:28,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 97 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 04:02:28,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:02:28,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 410 [2023-08-25 04:02:28,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:02:34,484 INFO L124 PetriNetUnfolderBase]: 74297/109896 cut-off events. [2023-08-25 04:02:34,484 INFO L125 PetriNetUnfolderBase]: For 52459/53044 co-relation queries the response was YES. [2023-08-25 04:02:34,708 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 835791 event pairs, 54959 based on Foata normal form. 0/94513 useless extension candidates. Maximal degree in co-relation 177216. Up to 100673 conditions per place. [2023-08-25 04:02:35,106 INFO L140 encePairwiseOnDemand]: 399/410 looper letters, 114 selfloop transitions, 19 changer transitions 0/151 dead transitions. [2023-08-25 04:02:35,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 151 transitions, 761 flow [2023-08-25 04:02:35,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:02:35,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:02:35,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 616 transitions. [2023-08-25 04:02:35,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5008130081300813 [2023-08-25 04:02:35,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 616 transitions. [2023-08-25 04:02:35,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 616 transitions. [2023-08-25 04:02:35,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:02:35,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 616 transitions. [2023-08-25 04:02:35,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states 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 04:02:35,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states 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 04:02:35,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states 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 04:02:35,112 INFO L175 Difference]: Start difference. First operand has 93 places, 97 transitions, 309 flow. Second operand 3 states and 616 transitions. [2023-08-25 04:02:35,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 151 transitions, 761 flow [2023-08-25 04:02:35,131 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 04:02:35,133 INFO L231 Difference]: Finished difference. Result has 93 places, 114 transitions, 459 flow [2023-08-25 04:02:35,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, 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 04:02:35,134 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, -7 predicate places. [2023-08-25 04:02:35,134 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 114 transitions, 459 flow [2023-08-25 04:02:35,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 04:02:35,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:02:35,135 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-25 04:02:35,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 04:02:35,135 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 04:02:35,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:02:35,135 INFO L85 PathProgramCache]: Analyzing trace with hash 660405429, now seen corresponding path program 1 times [2023-08-25 04:02:35,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:02:35,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15501875] [2023-08-25 04:02:35,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:02:35,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:02:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:02:35,149 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 04:02:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:02:35,160 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 04:02:35,160 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 04:02:35,160 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2023-08-25 04:02:35,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2023-08-25 04:02:35,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2023-08-25 04:02:35,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (16 of 20 remaining) [2023-08-25 04:02:35,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2023-08-25 04:02:35,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2023-08-25 04:02:35,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2023-08-25 04:02:35,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2023-08-25 04:02:35,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2023-08-25 04:02:35,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2023-08-25 04:02:35,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2023-08-25 04:02:35,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2023-08-25 04:02:35,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2023-08-25 04:02:35,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2023-08-25 04:02:35,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2023-08-25 04:02:35,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2023-08-25 04:02:35,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2023-08-25 04:02:35,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2023-08-25 04:02:35,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2023-08-25 04:02:35,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2023-08-25 04:02:35,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-25 04:02:35,163 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-25 04:02:35,163 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 04:02:35,163 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-25 04:02:35,186 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-25 04:02:35,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 290 transitions, 624 flow [2023-08-25 04:02:35,264 INFO L124 PetriNetUnfolderBase]: 101/793 cut-off events. [2023-08-25 04:02:35,264 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-25 04:02:35,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 793 events. 101/793 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3418 event pairs, 6 based on Foata normal form. 0/650 useless extension candidates. Maximal degree in co-relation 542. Up to 32 conditions per place. [2023-08-25 04:02:35,275 INFO L82 GeneralOperation]: Start removeDead. Operand has 262 places, 290 transitions, 624 flow [2023-08-25 04:02:35,280 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 262 places, 290 transitions, 624 flow [2023-08-25 04:02:35,281 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:02:35,281 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 262 places, 290 transitions, 624 flow [2023-08-25 04:02:35,281 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 262 places, 290 transitions, 624 flow [2023-08-25 04:02:35,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 290 transitions, 624 flow [2023-08-25 04:02:35,352 INFO L124 PetriNetUnfolderBase]: 101/793 cut-off events. [2023-08-25 04:02:35,352 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-25 04:02:35,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 793 events. 101/793 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3418 event pairs, 6 based on Foata normal form. 0/650 useless extension candidates. Maximal degree in co-relation 542. Up to 32 conditions per place. [2023-08-25 04:02:35,389 INFO L119 LiptonReduction]: Number of co-enabled transitions 48400 [2023-08-25 04:02:38,680 INFO L134 LiptonReduction]: Checked pairs total: 184892 [2023-08-25 04:02:38,680 INFO L136 LiptonReduction]: Total number of compositions: 184 [2023-08-25 04:02:38,682 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:02:38,683 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;@221b11fb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:02:38,683 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-25 04:02:38,684 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:02:38,685 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2023-08-25 04:02:38,685 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:02:38,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:02:38,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 04:02:38,685 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 04:02:38,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:02:38,685 INFO L85 PathProgramCache]: Analyzing trace with hash 59807057, now seen corresponding path program 1 times [2023-08-25 04:02:38,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:02:38,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376757365] [2023-08-25 04:02:38,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:02:38,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:02:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:02:38,712 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 04:02:38,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:02:38,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376757365] [2023-08-25 04:02:38,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376757365] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:02:38,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:02:38,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:02:38,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660325287] [2023-08-25 04:02:38,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:02:38,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:02:38,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:02:38,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:02:38,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:02:38,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 474 [2023-08-25 04:02:38,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 151 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 0 states 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 04:02:38,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:02:38,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 474 [2023-08-25 04:02:38,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:04:13,973 INFO L124 PetriNetUnfolderBase]: 740884/1103613 cut-off events. [2023-08-25 04:04:13,974 INFO L125 PetriNetUnfolderBase]: For 25770/25770 co-relation queries the response was YES. [2023-08-25 04:04:18,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2072730 conditions, 1103613 events. 740884/1103613 cut-off events. For 25770/25770 co-relation queries the response was YES. Maximal size of possible extension queue 21024. Compared 11099216 event pairs, 685376 based on Foata normal form. 163631/1152449 useless extension candidates. Maximal degree in co-relation 209449. Up to 954113 conditions per place. [2023-08-25 04:04:26,502 INFO L140 encePairwiseOnDemand]: 441/474 looper letters, 72 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2023-08-25 04:04:26,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 132 transitions, 456 flow [2023-08-25 04:04:26,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:04:26,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:04:26,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 840 transitions. [2023-08-25 04:04:26,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5907172995780591 [2023-08-25 04:04:26,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 840 transitions. [2023-08-25 04:04:26,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 840 transitions. [2023-08-25 04:04:26,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:04:26,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 840 transitions. [2023-08-25 04:04:26,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 0 states 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 04:04:26,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states 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 04:04:26,510 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states 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 04:04:26,510 INFO L175 Difference]: Start difference. First operand has 127 places, 151 transitions, 346 flow. Second operand 3 states and 840 transitions. [2023-08-25 04:04:26,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 132 transitions, 456 flow [2023-08-25 04:04:26,521 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 04:04:26,522 INFO L231 Difference]: Finished difference. Result has 127 places, 121 transitions, 298 flow [2023-08-25 04:04:26,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, 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 04:04:26,523 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 0 predicate places. [2023-08-25 04:04:26,523 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 121 transitions, 298 flow [2023-08-25 04:04:26,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 0 states 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 04:04:26,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:04:26,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:04:26,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-25 04:04:26,524 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 04:04:26,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:04:26,525 INFO L85 PathProgramCache]: Analyzing trace with hash 2065871898, now seen corresponding path program 1 times [2023-08-25 04:04:26,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:04:26,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409087808] [2023-08-25 04:04:26,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:04:26,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:04:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:04:26,542 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 04:04:26,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:04:26,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409087808] [2023-08-25 04:04:26,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409087808] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:04:26,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:04:26,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:04:26,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062125456] [2023-08-25 04:04:26,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:04:26,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:04:26,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:04:26,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:04:26,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:04:26,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 474 [2023-08-25 04:04:26,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 121 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states 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 04:04:26,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:04:26,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 474 [2023-08-25 04:04:26,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand