/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/pthread-deagle/arithmetic_prog_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 07:32:51,982 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 07:32:52,067 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 07:32:52,072 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 07:32:52,073 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 07:32:52,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 07:32:52,102 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 07:32:52,102 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 07:32:52,103 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 07:32:52,106 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 07:32:52,107 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 07:32:52,107 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 07:32:52,107 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 07:32:52,108 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 07:32:52,109 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 07:32:52,109 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 07:32:52,109 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 07:32:52,109 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 07:32:52,110 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 07:32:52,110 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 07:32:52,110 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 07:32:52,111 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 07:32:52,111 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 07:32:52,112 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 07:32:52,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 07:32:52,112 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 07:32:52,112 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 07:32:52,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:32:52,113 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 07:32:52,113 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 07:32:52,114 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 07:32:52,114 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 07:32:52,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 07:32:52,114 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 07:32:52,114 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 07:32:52,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 07:32:52,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 07:32:52,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 07:32:52,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 07:32:52,492 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 07:32:52,492 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 07:32:52,494 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-08-25 07:32:53,596 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 07:32:53,864 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 07:32:53,868 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-08-25 07:32:53,894 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb5344edb/f953e8b03f074ae5a631dbe7d349cdb8/FLAG3338356ab [2023-08-25 07:32:53,911 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb5344edb/f953e8b03f074ae5a631dbe7d349cdb8 [2023-08-25 07:32:53,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 07:32:53,917 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 07:32:53,919 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 07:32:53,919 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 07:32:53,922 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 07:32:53,923 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:32:53" (1/1) ... [2023-08-25 07:32:53,924 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62fd66d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:32:53, skipping insertion in model container [2023-08-25 07:32:53,924 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:32:53" (1/1) ... [2023-08-25 07:32:53,974 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 07:32:54,368 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:32:54,391 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 07:32:54,423 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [218] [2023-08-25 07:32:54,425 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [219] [2023-08-25 07:32:54,432 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [730] [2023-08-25 07:32:54,436 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned long [871] [2023-08-25 07:32:54,458 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:32:54,520 INFO L206 MainTranslator]: Completed translation [2023-08-25 07:32:54,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:32:54 WrapperNode [2023-08-25 07:32:54,522 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 07:32:54,523 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 07:32:54,523 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 07:32:54,523 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 07:32:54,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:32:54" (1/1) ... [2023-08-25 07:32:54,561 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:32:54" (1/1) ... [2023-08-25 07:32:54,589 INFO L138 Inliner]: procedures = 243, calls = 51, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 106 [2023-08-25 07:32:54,590 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 07:32:54,590 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 07:32:54,590 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 07:32:54,591 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 07:32:54,599 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:32:54" (1/1) ... [2023-08-25 07:32:54,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:32:54" (1/1) ... [2023-08-25 07:32:54,602 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:32:54" (1/1) ... [2023-08-25 07:32:54,603 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:32:54" (1/1) ... [2023-08-25 07:32:54,610 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:32:54" (1/1) ... [2023-08-25 07:32:54,614 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:32:54" (1/1) ... [2023-08-25 07:32:54,616 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:32:54" (1/1) ... [2023-08-25 07:32:54,618 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:32:54" (1/1) ... [2023-08-25 07:32:54,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 07:32:54,622 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 07:32:54,622 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 07:32:54,622 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 07:32:54,623 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:32:54" (1/1) ... [2023-08-25 07:32:54,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:32:54,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:32:54,659 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 07:32:54,686 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 07:32:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 07:32:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 07:32:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-25 07:32:54,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 07:32:54,702 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 07:32:54,702 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 07:32:54,702 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 07:32:54,702 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 07:32:54,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 07:32:54,703 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 07:32:54,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 07:32:54,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 07:32:54,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 07:32:54,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 07:32:54,704 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 07:32:54,829 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 07:32:54,830 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 07:32:55,207 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 07:32:55,217 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 07:32:55,217 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-25 07:32:55,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:32:55 BoogieIcfgContainer [2023-08-25 07:32:55,247 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 07:32:55,249 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 07:32:55,249 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 07:32:55,253 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 07:32:55,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 07:32:53" (1/3) ... [2023-08-25 07:32:55,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9d8857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:32:55, skipping insertion in model container [2023-08-25 07:32:55,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:32:54" (2/3) ... [2023-08-25 07:32:55,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9d8857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:32:55, skipping insertion in model container [2023-08-25 07:32:55,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:32:55" (3/3) ... [2023-08-25 07:32:55,255 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2023-08-25 07:32:55,269 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 07:32:55,270 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-25 07:32:55,270 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 07:32:55,333 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 07:32:55,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 206 transitions, 428 flow [2023-08-25 07:32:55,462 INFO L124 PetriNetUnfolderBase]: 11/204 cut-off events. [2023-08-25 07:32:55,462 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 07:32:55,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 204 events. 11/204 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 359 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 111. Up to 3 conditions per place. [2023-08-25 07:32:55,469 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 206 transitions, 428 flow [2023-08-25 07:32:55,478 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 190 places, 191 transitions, 394 flow [2023-08-25 07:32:55,481 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 07:32:55,494 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 191 transitions, 394 flow [2023-08-25 07:32:55,498 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 191 transitions, 394 flow [2023-08-25 07:32:55,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 191 transitions, 394 flow [2023-08-25 07:32:55,555 INFO L124 PetriNetUnfolderBase]: 8/191 cut-off events. [2023-08-25 07:32:55,555 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 07:32:55,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 191 events. 8/191 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 335 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 111. Up to 2 conditions per place. [2023-08-25 07:32:55,561 INFO L119 LiptonReduction]: Number of co-enabled transitions 7052 [2023-08-25 07:33:01,183 INFO L134 LiptonReduction]: Checked pairs total: 19909 [2023-08-25 07:33:01,183 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-08-25 07:33:01,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 07:33:01,200 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;@a090660, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 07:33:01,200 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-08-25 07:33:01,201 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 07:33:01,201 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 07:33:01,201 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 07:33:01,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:01,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 07:33:01,202 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 07:33:01,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:01,206 INFO L85 PathProgramCache]: Analyzing trace with hash 744, now seen corresponding path program 1 times [2023-08-25 07:33:01,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:01,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615857004] [2023-08-25 07:33:01,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:01,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:01,305 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 07:33:01,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:01,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615857004] [2023-08-25 07:33:01,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615857004] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:33:01,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:33:01,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 07:33:01,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848206844] [2023-08-25 07:33:01,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:33:01,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 07:33:01,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:01,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 07:33:01,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 07:33:01,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 364 [2023-08-25 07:33:01,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 132 flow. Second operand has 2 states, 2 states have (on average 195.5) internal successors, (391), 2 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 07:33:01,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:01,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 364 [2023-08-25 07:33:01,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:33:01,456 INFO L124 PetriNetUnfolderBase]: 205/510 cut-off events. [2023-08-25 07:33:01,457 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-25 07:33:01,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 510 events. 205/510 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2576 event pairs, 141 based on Foata normal form. 32/453 useless extension candidates. Maximal degree in co-relation 768. Up to 333 conditions per place. [2023-08-25 07:33:01,464 INFO L140 encePairwiseOnDemand]: 352/364 looper letters, 25 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2023-08-25 07:33:01,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 158 flow [2023-08-25 07:33:01,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 07:33:01,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 07:33:01,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 427 transitions. [2023-08-25 07:33:01,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2023-08-25 07:33:01,485 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 427 transitions. [2023-08-25 07:33:01,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 427 transitions. [2023-08-25 07:33:01,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:33:01,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 427 transitions. [2023-08-25 07:33:01,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 213.5) internal successors, (427), 2 states have internal predecessors, (427), 0 states have call successors, (0), 0 states 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 07:33:01,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states 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 07:33:01,497 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states 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 07:33:01,499 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 132 flow. Second operand 2 states and 427 transitions. [2023-08-25 07:33:01,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 158 flow [2023-08-25 07:33:01,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 150 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 07:33:01,503 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 100 flow [2023-08-25 07:33:01,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=100, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2023-08-25 07:33:01,508 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -13 predicate places. [2023-08-25 07:33:01,508 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 100 flow [2023-08-25 07:33:01,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 195.5) internal successors, (391), 2 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 07:33:01,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:01,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-25 07:33:01,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 07:33:01,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 07:33:01,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:01,510 INFO L85 PathProgramCache]: Analyzing trace with hash 385503927, now seen corresponding path program 1 times [2023-08-25 07:33:01,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:01,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72651061] [2023-08-25 07:33:01,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:01,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:01,628 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 07:33:01,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:01,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72651061] [2023-08-25 07:33:01,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72651061] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:33:01,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:33:01,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:33:01,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295145152] [2023-08-25 07:33:01,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:33:01,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:33:01,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:01,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:33:01,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:33:01,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 364 [2023-08-25 07:33:01,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 100 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 07:33:01,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:01,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 364 [2023-08-25 07:33:01,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:33:01,848 INFO L124 PetriNetUnfolderBase]: 962/1805 cut-off events. [2023-08-25 07:33:01,848 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-08-25 07:33:01,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3427 conditions, 1805 events. 962/1805 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 9335 event pairs, 326 based on Foata normal form. 0/1553 useless extension candidates. Maximal degree in co-relation 3424. Up to 870 conditions per place. [2023-08-25 07:33:01,858 INFO L140 encePairwiseOnDemand]: 350/364 looper letters, 62 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2023-08-25 07:33:01,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 80 transitions, 310 flow [2023-08-25 07:33:01,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:33:01,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:33:01,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2023-08-25 07:33:01,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2023-08-25 07:33:01,861 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2023-08-25 07:33:01,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2023-08-25 07:33:01,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:33:01,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2023-08-25 07:33:01,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states 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 07:33:01,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 07:33:01,867 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 07:33:01,867 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 100 flow. Second operand 3 states and 598 transitions. [2023-08-25 07:33:01,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 80 transitions, 310 flow [2023-08-25 07:33:01,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 80 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:33:01,869 INFO L231 Difference]: Finished difference. Result has 52 places, 58 transitions, 188 flow [2023-08-25 07:33:01,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=52, PETRI_TRANSITIONS=58} [2023-08-25 07:33:01,870 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -9 predicate places. [2023-08-25 07:33:01,870 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 58 transitions, 188 flow [2023-08-25 07:33:01,871 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 07:33:01,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:01,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:33:01,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 07:33:01,871 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 07:33:01,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:01,872 INFO L85 PathProgramCache]: Analyzing trace with hash -393775609, now seen corresponding path program 1 times [2023-08-25 07:33:01,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:01,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348422737] [2023-08-25 07:33:01,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:01,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:02,005 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 07:33:02,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:02,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348422737] [2023-08-25 07:33:02,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348422737] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:33:02,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:33:02,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:33:02,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750358130] [2023-08-25 07:33:02,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:33:02,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:33:02,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:02,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:33:02,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:33:02,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 364 [2023-08-25 07:33:02,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 58 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:02,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:02,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 364 [2023-08-25 07:33:02,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:33:02,191 INFO L124 PetriNetUnfolderBase]: 888/1905 cut-off events. [2023-08-25 07:33:02,191 INFO L125 PetriNetUnfolderBase]: For 174/178 co-relation queries the response was YES. [2023-08-25 07:33:02,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3908 conditions, 1905 events. 888/1905 cut-off events. For 174/178 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 10785 event pairs, 322 based on Foata normal form. 0/1672 useless extension candidates. Maximal degree in co-relation 3903. Up to 971 conditions per place. [2023-08-25 07:33:02,203 INFO L140 encePairwiseOnDemand]: 359/364 looper letters, 48 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2023-08-25 07:33:02,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 333 flow [2023-08-25 07:33:02,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:33:02,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:33:02,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 607 transitions. [2023-08-25 07:33:02,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5558608058608059 [2023-08-25 07:33:02,206 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 607 transitions. [2023-08-25 07:33:02,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 607 transitions. [2023-08-25 07:33:02,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:33:02,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 607 transitions. [2023-08-25 07:33:02,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 07:33:02,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 07:33:02,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 07:33:02,211 INFO L175 Difference]: Start difference. First operand has 52 places, 58 transitions, 188 flow. Second operand 3 states and 607 transitions. [2023-08-25 07:33:02,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 333 flow [2023-08-25 07:33:02,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 78 transitions, 313 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 07:33:02,216 INFO L231 Difference]: Finished difference. Result has 54 places, 60 transitions, 192 flow [2023-08-25 07:33:02,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=54, PETRI_TRANSITIONS=60} [2023-08-25 07:33:02,217 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -7 predicate places. [2023-08-25 07:33:02,217 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 60 transitions, 192 flow [2023-08-25 07:33:02,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:02,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:02,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:33:02,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 07:33:02,218 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 07:33:02,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:02,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1026766716, now seen corresponding path program 1 times [2023-08-25 07:33:02,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:02,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523591188] [2023-08-25 07:33:02,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:02,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:02,300 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 07:33:02,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:02,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523591188] [2023-08-25 07:33:02,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523591188] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:33:02,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:33:02,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:33:02,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843453634] [2023-08-25 07:33:02,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:33:02,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:33:02,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:02,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:33:02,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:33:02,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 364 [2023-08-25 07:33:02,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 60 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states 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 07:33:02,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:02,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 364 [2023-08-25 07:33:02,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:33:02,539 INFO L124 PetriNetUnfolderBase]: 752/1867 cut-off events. [2023-08-25 07:33:02,540 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2023-08-25 07:33:02,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3714 conditions, 1867 events. 752/1867 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 12253 event pairs, 303 based on Foata normal form. 0/1711 useless extension candidates. Maximal degree in co-relation 3708. Up to 783 conditions per place. [2023-08-25 07:33:02,552 INFO L140 encePairwiseOnDemand]: 361/364 looper letters, 42 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-25 07:33:02,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 325 flow [2023-08-25 07:33:02,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:33:02,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:33:02,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 609 transitions. [2023-08-25 07:33:02,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2023-08-25 07:33:02,554 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 609 transitions. [2023-08-25 07:33:02,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 609 transitions. [2023-08-25 07:33:02,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:33:02,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 609 transitions. [2023-08-25 07:33:02,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 07:33:02,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 07:33:02,559 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 07:33:02,560 INFO L175 Difference]: Start difference. First operand has 54 places, 60 transitions, 192 flow. Second operand 3 states and 609 transitions. [2023-08-25 07:33:02,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 325 flow [2023-08-25 07:33:02,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 77 transitions, 317 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 07:33:02,563 INFO L231 Difference]: Finished difference. Result has 55 places, 61 transitions, 198 flow [2023-08-25 07:33:02,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=55, PETRI_TRANSITIONS=61} [2023-08-25 07:33:02,564 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -6 predicate places. [2023-08-25 07:33:02,564 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 61 transitions, 198 flow [2023-08-25 07:33:02,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states 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 07:33:02,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:02,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:33:02,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 07:33:02,565 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 07:33:02,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:02,566 INFO L85 PathProgramCache]: Analyzing trace with hash -91251144, now seen corresponding path program 1 times [2023-08-25 07:33:02,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:02,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734816805] [2023-08-25 07:33:02,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:02,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:02,608 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 07:33:02,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:02,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734816805] [2023-08-25 07:33:02,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734816805] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:33:02,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:33:02,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:33:02,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000066644] [2023-08-25 07:33:02,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:33:02,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:33:02,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:02,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:33:02,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:33:02,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 364 [2023-08-25 07:33:02,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 61 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states 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 07:33:02,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:02,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 364 [2023-08-25 07:33:02,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:33:02,899 INFO L124 PetriNetUnfolderBase]: 1683/3125 cut-off events. [2023-08-25 07:33:02,899 INFO L125 PetriNetUnfolderBase]: For 570/570 co-relation queries the response was YES. [2023-08-25 07:33:02,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7445 conditions, 3125 events. 1683/3125 cut-off events. For 570/570 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 17460 event pairs, 901 based on Foata normal form. 0/2850 useless extension candidates. Maximal degree in co-relation 7438. Up to 2265 conditions per place. [2023-08-25 07:33:02,918 INFO L140 encePairwiseOnDemand]: 357/364 looper letters, 68 selfloop transitions, 11 changer transitions 0/88 dead transitions. [2023-08-25 07:33:02,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 88 transitions, 442 flow [2023-08-25 07:33:02,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:33:02,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:33:02,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 578 transitions. [2023-08-25 07:33:02,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5293040293040293 [2023-08-25 07:33:02,921 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 578 transitions. [2023-08-25 07:33:02,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 578 transitions. [2023-08-25 07:33:02,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:33:02,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 578 transitions. [2023-08-25 07:33:02,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states 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 07:33:02,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 07:33:02,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 07:33:02,925 INFO L175 Difference]: Start difference. First operand has 55 places, 61 transitions, 198 flow. Second operand 3 states and 578 transitions. [2023-08-25 07:33:02,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 88 transitions, 442 flow [2023-08-25 07:33:02,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 88 transitions, 439 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 07:33:02,928 INFO L231 Difference]: Finished difference. Result has 58 places, 70 transitions, 294 flow [2023-08-25 07:33:02,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=58, PETRI_TRANSITIONS=70} [2023-08-25 07:33:02,929 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2023-08-25 07:33:02,929 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 70 transitions, 294 flow [2023-08-25 07:33:02,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states 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 07:33:02,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:02,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:33:02,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 07:33:02,930 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 07:33:02,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:02,931 INFO L85 PathProgramCache]: Analyzing trace with hash -477415254, now seen corresponding path program 1 times [2023-08-25 07:33:02,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:02,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845683952] [2023-08-25 07:33:02,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:02,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:03,007 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 07:33:03,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:03,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845683952] [2023-08-25 07:33:03,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845683952] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:33:03,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:33:03,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:33:03,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138380526] [2023-08-25 07:33:03,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:33:03,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:33:03,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:03,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:33:03,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:33:03,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 364 [2023-08-25 07:33:03,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 70 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 07:33:03,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:03,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 364 [2023-08-25 07:33:03,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:33:03,110 INFO L124 PetriNetUnfolderBase]: 236/693 cut-off events. [2023-08-25 07:33:03,110 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2023-08-25 07:33:03,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1578 conditions, 693 events. 236/693 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3639 event pairs, 58 based on Foata normal form. 46/725 useless extension candidates. Maximal degree in co-relation 1570. Up to 268 conditions per place. [2023-08-25 07:33:03,114 INFO L140 encePairwiseOnDemand]: 356/364 looper letters, 29 selfloop transitions, 9 changer transitions 0/57 dead transitions. [2023-08-25 07:33:03,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 268 flow [2023-08-25 07:33:03,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:33:03,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:33:03,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 571 transitions. [2023-08-25 07:33:03,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228937728937729 [2023-08-25 07:33:03,116 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 571 transitions. [2023-08-25 07:33:03,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 571 transitions. [2023-08-25 07:33:03,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:33:03,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 571 transitions. [2023-08-25 07:33:03,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states 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 07:33:03,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 07:33:03,121 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 07:33:03,121 INFO L175 Difference]: Start difference. First operand has 58 places, 70 transitions, 294 flow. Second operand 3 states and 571 transitions. [2023-08-25 07:33:03,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 268 flow [2023-08-25 07:33:03,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 234 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-08-25 07:33:03,124 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 152 flow [2023-08-25 07:33:03,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-08-25 07:33:03,125 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -10 predicate places. [2023-08-25 07:33:03,125 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 152 flow [2023-08-25 07:33:03,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 07:33:03,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:03,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:33:03,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 07:33:03,126 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 07:33:03,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:03,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1608743899, now seen corresponding path program 1 times [2023-08-25 07:33:03,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:03,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012448383] [2023-08-25 07:33:03,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:03,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:03,160 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 07:33:03,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:03,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012448383] [2023-08-25 07:33:03,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012448383] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:33:03,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:33:03,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:33:03,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686691103] [2023-08-25 07:33:03,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:33:03,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:33:03,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:03,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:33:03,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:33:03,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 364 [2023-08-25 07:33:03,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 07:33:03,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:03,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 364 [2023-08-25 07:33:03,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:33:03,243 INFO L124 PetriNetUnfolderBase]: 211/585 cut-off events. [2023-08-25 07:33:03,243 INFO L125 PetriNetUnfolderBase]: For 116/120 co-relation queries the response was YES. [2023-08-25 07:33:03,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1265 conditions, 585 events. 211/585 cut-off events. For 116/120 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2891 event pairs, 152 based on Foata normal form. 0/567 useless extension candidates. Maximal degree in co-relation 1258. Up to 357 conditions per place. [2023-08-25 07:33:03,246 INFO L140 encePairwiseOnDemand]: 360/364 looper letters, 28 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2023-08-25 07:33:03,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 223 flow [2023-08-25 07:33:03,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:33:03,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:33:03,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 561 transitions. [2023-08-25 07:33:03,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5137362637362637 [2023-08-25 07:33:03,248 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 561 transitions. [2023-08-25 07:33:03,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 561 transitions. [2023-08-25 07:33:03,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:33:03,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 561 transitions. [2023-08-25 07:33:03,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states 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 07:33:03,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 07:33:03,252 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 07:33:03,252 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 152 flow. Second operand 3 states and 561 transitions. [2023-08-25 07:33:03,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 223 flow [2023-08-25 07:33:03,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 07:33:03,254 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 147 flow [2023-08-25 07:33:03,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-08-25 07:33:03,255 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -10 predicate places. [2023-08-25 07:33:03,255 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 147 flow [2023-08-25 07:33:03,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 07:33:03,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:03,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:33:03,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 07:33:03,256 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 07:33:03,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:03,256 INFO L85 PathProgramCache]: Analyzing trace with hash 811848566, now seen corresponding path program 1 times [2023-08-25 07:33:03,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:03,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349214779] [2023-08-25 07:33:03,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:03,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:03,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:33:03,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:03,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349214779] [2023-08-25 07:33:03,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349214779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:33:03,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:33:03,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:33:03,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16891920] [2023-08-25 07:33:03,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:33:03,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:33:03,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:03,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:33:03,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:33:03,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 364 [2023-08-25 07:33:03,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states 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 07:33:03,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:03,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 364 [2023-08-25 07:33:03,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:33:03,448 INFO L124 PetriNetUnfolderBase]: 283/857 cut-off events. [2023-08-25 07:33:03,448 INFO L125 PetriNetUnfolderBase]: For 174/178 co-relation queries the response was YES. [2023-08-25 07:33:03,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1739 conditions, 857 events. 283/857 cut-off events. For 174/178 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4286 event pairs, 112 based on Foata normal form. 26/876 useless extension candidates. Maximal degree in co-relation 1731. Up to 290 conditions per place. [2023-08-25 07:33:03,452 INFO L140 encePairwiseOnDemand]: 361/364 looper letters, 44 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-25 07:33:03,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 66 transitions, 303 flow [2023-08-25 07:33:03,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:33:03,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:33:03,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 604 transitions. [2023-08-25 07:33:03,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531135531135531 [2023-08-25 07:33:03,457 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 604 transitions. [2023-08-25 07:33:03,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 604 transitions. [2023-08-25 07:33:03,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:33:03,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 604 transitions. [2023-08-25 07:33:03,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 07:33:03,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 07:33:03,462 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 07:33:03,462 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 147 flow. Second operand 3 states and 604 transitions. [2023-08-25 07:33:03,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 66 transitions, 303 flow [2023-08-25 07:33:03,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 66 transitions, 293 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 07:33:03,465 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 154 flow [2023-08-25 07:33:03,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2023-08-25 07:33:03,468 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -9 predicate places. [2023-08-25 07:33:03,468 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 154 flow [2023-08-25 07:33:03,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states 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 07:33:03,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:03,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:33:03,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 07:33:03,469 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 07:33:03,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:03,469 INFO L85 PathProgramCache]: Analyzing trace with hash -964841638, now seen corresponding path program 1 times [2023-08-25 07:33:03,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:03,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756299882] [2023-08-25 07:33:03,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:03,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:03,510 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 07:33:03,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:03,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756299882] [2023-08-25 07:33:03,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756299882] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:33:03,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:33:03,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:33:03,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902760866] [2023-08-25 07:33:03,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:33:03,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:33:03,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:03,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:33:03,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:33:03,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 364 [2023-08-25 07:33:03,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 07:33:03,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:03,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 364 [2023-08-25 07:33:03,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:33:03,638 INFO L124 PetriNetUnfolderBase]: 478/1077 cut-off events. [2023-08-25 07:33:03,638 INFO L125 PetriNetUnfolderBase]: For 320/324 co-relation queries the response was YES. [2023-08-25 07:33:03,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2514 conditions, 1077 events. 478/1077 cut-off events. For 320/324 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 4728 event pairs, 372 based on Foata normal form. 0/1073 useless extension candidates. Maximal degree in co-relation 2505. Up to 886 conditions per place. [2023-08-25 07:33:03,643 INFO L140 encePairwiseOnDemand]: 361/364 looper letters, 40 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2023-08-25 07:33:03,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 249 flow [2023-08-25 07:33:03,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:33:03,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:33:03,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 555 transitions. [2023-08-25 07:33:03,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5082417582417582 [2023-08-25 07:33:03,646 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 555 transitions. [2023-08-25 07:33:03,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 555 transitions. [2023-08-25 07:33:03,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:33:03,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 555 transitions. [2023-08-25 07:33:03,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states 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 07:33:03,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 07:33:03,649 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 07:33:03,649 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 154 flow. Second operand 3 states and 555 transitions. [2023-08-25 07:33:03,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 249 flow [2023-08-25 07:33:03,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 247 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 07:33:03,652 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 156 flow [2023-08-25 07:33:03,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-08-25 07:33:03,653 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -9 predicate places. [2023-08-25 07:33:03,653 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 156 flow [2023-08-25 07:33:03,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 07:33:03,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:03,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:33:03,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 07:33:03,654 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 07:33:03,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:03,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1107163605, now seen corresponding path program 1 times [2023-08-25 07:33:03,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:03,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387734992] [2023-08-25 07:33:03,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:03,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:03,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:33:03,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:03,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387734992] [2023-08-25 07:33:03,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387734992] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:33:03,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432619446] [2023-08-25 07:33:03,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:03,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:33:03,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:33:03,765 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 07:33:03,790 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 07:33:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:03,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 07:33:03,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:33:03,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:33:03,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:33:03,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:33:03,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432619446] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:33:03,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:33:03,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-25 07:33:03,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335577620] [2023-08-25 07:33:03,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:33:03,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 07:33:03,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:03,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 07:33:03,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 07:33:03,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 364 [2023-08-25 07:33:04,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 194.85714285714286) internal successors, (1364), 7 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states 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 07:33:04,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:04,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 364 [2023-08-25 07:33:04,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:33:04,255 INFO L124 PetriNetUnfolderBase]: 588/1905 cut-off events. [2023-08-25 07:33:04,255 INFO L125 PetriNetUnfolderBase]: For 450/458 co-relation queries the response was YES. [2023-08-25 07:33:04,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3891 conditions, 1905 events. 588/1905 cut-off events. For 450/458 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 11128 event pairs, 115 based on Foata normal form. 114/2009 useless extension candidates. Maximal degree in co-relation 3882. Up to 261 conditions per place. [2023-08-25 07:33:04,266 INFO L140 encePairwiseOnDemand]: 360/364 looper letters, 83 selfloop transitions, 6 changer transitions 0/108 dead transitions. [2023-08-25 07:33:04,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 108 transitions, 540 flow [2023-08-25 07:33:04,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:33:04,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:33:04,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1219 transitions. [2023-08-25 07:33:04,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5581501831501832 [2023-08-25 07:33:04,269 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1219 transitions. [2023-08-25 07:33:04,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1219 transitions. [2023-08-25 07:33:04,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:33:04,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1219 transitions. [2023-08-25 07:33:04,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 203.16666666666666) internal successors, (1219), 6 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states 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 07:33:04,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 364.0) internal successors, (2548), 7 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states 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 07:33:04,276 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 364.0) internal successors, (2548), 7 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states 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 07:33:04,276 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 156 flow. Second operand 6 states and 1219 transitions. [2023-08-25 07:33:04,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 108 transitions, 540 flow [2023-08-25 07:33:04,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 108 transitions, 522 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 07:33:04,279 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 193 flow [2023-08-25 07:33:04,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2023-08-25 07:33:04,280 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -2 predicate places. [2023-08-25 07:33:04,280 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 193 flow [2023-08-25 07:33:04,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 194.85714285714286) internal successors, (1364), 7 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states 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 07:33:04,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:04,281 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:33:04,291 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 07:33:04,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-25 07:33:04,491 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 07:33:04,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:04,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1794823815, now seen corresponding path program 2 times [2023-08-25 07:33:04,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:04,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935299014] [2023-08-25 07:33:04,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:04,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:04,595 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-08-25 07:33:04,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:04,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935299014] [2023-08-25 07:33:04,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935299014] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:33:04,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419483820] [2023-08-25 07:33:04,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 07:33:04,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:33:04,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:33:04,597 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 07:33:04,600 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 07:33:04,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 07:33:04,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:33:04,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 07:33:04,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:33:04,819 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-08-25 07:33:04,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:33:04,853 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-08-25 07:33:04,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419483820] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:33:04,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:33:04,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-25 07:33:04,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007676164] [2023-08-25 07:33:04,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:33:04,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 07:33:04,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:04,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 07:33:04,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 07:33:04,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 364 [2023-08-25 07:33:04,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 193.28571428571428) internal successors, (1353), 7 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states 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 07:33:04,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:04,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 364 [2023-08-25 07:33:04,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:33:05,241 INFO L124 PetriNetUnfolderBase]: 1018/3316 cut-off events. [2023-08-25 07:33:05,241 INFO L125 PetriNetUnfolderBase]: For 1612/1624 co-relation queries the response was YES. [2023-08-25 07:33:05,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7155 conditions, 3316 events. 1018/3316 cut-off events. For 1612/1624 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 21579 event pairs, 147 based on Foata normal form. 132/3433 useless extension candidates. Maximal degree in co-relation 7143. Up to 423 conditions per place. [2023-08-25 07:33:05,261 INFO L140 encePairwiseOnDemand]: 360/364 looper letters, 100 selfloop transitions, 6 changer transitions 0/125 dead transitions. [2023-08-25 07:33:05,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 125 transitions, 757 flow [2023-08-25 07:33:05,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:33:05,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:33:05,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1209 transitions. [2023-08-25 07:33:05,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2023-08-25 07:33:05,264 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1209 transitions. [2023-08-25 07:33:05,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1209 transitions. [2023-08-25 07:33:05,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:33:05,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1209 transitions. [2023-08-25 07:33:05,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 201.5) internal successors, (1209), 6 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states 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 07:33:05,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 364.0) internal successors, (2548), 7 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states 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 07:33:05,271 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 364.0) internal successors, (2548), 7 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states 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 07:33:05,271 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 193 flow. Second operand 6 states and 1209 transitions. [2023-08-25 07:33:05,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 125 transitions, 757 flow [2023-08-25 07:33:05,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 125 transitions, 723 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-08-25 07:33:05,276 INFO L231 Difference]: Finished difference. Result has 67 places, 53 transitions, 228 flow [2023-08-25 07:33:05,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=228, PETRI_PLACES=67, PETRI_TRANSITIONS=53} [2023-08-25 07:33:05,276 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 6 predicate places. [2023-08-25 07:33:05,277 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 53 transitions, 228 flow [2023-08-25 07:33:05,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 193.28571428571428) internal successors, (1353), 7 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states 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 07:33:05,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:05,277 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:33:05,290 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 07:33:05,483 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,SelfDestructingSolverStorable10 [2023-08-25 07:33:05,484 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 07:33:05,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:05,484 INFO L85 PathProgramCache]: Analyzing trace with hash 727639346, now seen corresponding path program 3 times [2023-08-25 07:33:05,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:05,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884810173] [2023-08-25 07:33:05,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:05,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:05,683 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-08-25 07:33:05,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:05,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884810173] [2023-08-25 07:33:05,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884810173] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:33:05,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:33:05,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 07:33:05,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060292404] [2023-08-25 07:33:05,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:33:05,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 07:33:05,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:05,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 07:33:05,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 07:33:05,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 364 [2023-08-25 07:33:05,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 53 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 190.8) internal successors, (954), 5 states have internal predecessors, (954), 0 states have call successors, (0), 0 states 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 07:33:05,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:05,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 364 [2023-08-25 07:33:05,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:33:06,064 INFO L124 PetriNetUnfolderBase]: 1052/2955 cut-off events. [2023-08-25 07:33:06,064 INFO L125 PetriNetUnfolderBase]: For 2319/2319 co-relation queries the response was YES. [2023-08-25 07:33:06,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7251 conditions, 2955 events. 1052/2955 cut-off events. For 2319/2319 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 17771 event pairs, 293 based on Foata normal form. 50/2838 useless extension candidates. Maximal degree in co-relation 7235. Up to 1048 conditions per place. [2023-08-25 07:33:06,087 INFO L140 encePairwiseOnDemand]: 356/364 looper letters, 70 selfloop transitions, 7 changer transitions 4/94 dead transitions. [2023-08-25 07:33:06,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 94 transitions, 565 flow [2023-08-25 07:33:06,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:33:06,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:33:06,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1174 transitions. [2023-08-25 07:33:06,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375457875457875 [2023-08-25 07:33:06,091 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1174 transitions. [2023-08-25 07:33:06,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1174 transitions. [2023-08-25 07:33:06,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:33:06,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1174 transitions. [2023-08-25 07:33:06,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 195.66666666666666) internal successors, (1174), 6 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states 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 07:33:06,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 364.0) internal successors, (2548), 7 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states 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 07:33:06,098 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 364.0) internal successors, (2548), 7 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states 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 07:33:06,098 INFO L175 Difference]: Start difference. First operand has 67 places, 53 transitions, 228 flow. Second operand 6 states and 1174 transitions. [2023-08-25 07:33:06,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 94 transitions, 565 flow [2023-08-25 07:33:06,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 94 transitions, 554 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-25 07:33:06,104 INFO L231 Difference]: Finished difference. Result has 75 places, 57 transitions, 266 flow [2023-08-25 07:33:06,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=266, PETRI_PLACES=75, PETRI_TRANSITIONS=57} [2023-08-25 07:33:06,105 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 14 predicate places. [2023-08-25 07:33:06,105 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 57 transitions, 266 flow [2023-08-25 07:33:06,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 190.8) internal successors, (954), 5 states have internal predecessors, (954), 0 states have call successors, (0), 0 states 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 07:33:06,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:06,106 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:33:06,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-25 07:33:06,106 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 07:33:06,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:06,107 INFO L85 PathProgramCache]: Analyzing trace with hash 535922410, now seen corresponding path program 4 times [2023-08-25 07:33:06,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:06,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799050627] [2023-08-25 07:33:06,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:06,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:06,311 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-08-25 07:33:06,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:06,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799050627] [2023-08-25 07:33:06,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799050627] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:33:06,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401181533] [2023-08-25 07:33:06,312 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 07:33:06,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:33:06,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:33:06,313 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:33:06,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 07:33:06,518 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 07:33:06,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:33:06,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 07:33:06,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:33:06,642 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-08-25 07:33:06,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:33:06,731 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-08-25 07:33:06,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401181533] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:33:06,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:33:06,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 6 [2023-08-25 07:33:06,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153904348] [2023-08-25 07:33:06,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:33:06,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 07:33:06,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:06,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 07:33:06,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-25 07:33:06,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 364 [2023-08-25 07:33:06,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 57 transitions, 266 flow. Second operand has 7 states, 7 states have (on average 189.85714285714286) internal successors, (1329), 7 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states 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 07:33:06,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:06,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 364 [2023-08-25 07:33:06,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:33:07,039 INFO L124 PetriNetUnfolderBase]: 440/1331 cut-off events. [2023-08-25 07:33:07,039 INFO L125 PetriNetUnfolderBase]: For 1479/1479 co-relation queries the response was YES. [2023-08-25 07:33:07,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3492 conditions, 1331 events. 440/1331 cut-off events. For 1479/1479 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5297 event pairs, 122 based on Foata normal form. 46/1367 useless extension candidates. Maximal degree in co-relation 3472. Up to 412 conditions per place. [2023-08-25 07:33:07,046 INFO L140 encePairwiseOnDemand]: 353/364 looper letters, 67 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2023-08-25 07:33:07,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 91 transitions, 575 flow [2023-08-25 07:33:07,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 07:33:07,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 07:33:07,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1530 transitions. [2023-08-25 07:33:07,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254120879120879 [2023-08-25 07:33:07,052 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1530 transitions. [2023-08-25 07:33:07,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1530 transitions. [2023-08-25 07:33:07,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:33:07,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1530 transitions. [2023-08-25 07:33:07,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 191.25) internal successors, (1530), 8 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states 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 07:33:07,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 364.0) internal successors, (3276), 9 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states 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 07:33:07,060 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 364.0) internal successors, (3276), 9 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states 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 07:33:07,060 INFO L175 Difference]: Start difference. First operand has 75 places, 57 transitions, 266 flow. Second operand 8 states and 1530 transitions. [2023-08-25 07:33:07,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 91 transitions, 575 flow [2023-08-25 07:33:07,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 91 transitions, 575 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:33:07,065 INFO L231 Difference]: Finished difference. Result has 84 places, 57 transitions, 303 flow [2023-08-25 07:33:07,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=303, PETRI_PLACES=84, PETRI_TRANSITIONS=57} [2023-08-25 07:33:07,066 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 23 predicate places. [2023-08-25 07:33:07,066 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 57 transitions, 303 flow [2023-08-25 07:33:07,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 189.85714285714286) internal successors, (1329), 7 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states 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 07:33:07,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:07,067 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:33:07,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 07:33:07,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:33:07,273 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 07:33:07,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:07,274 INFO L85 PathProgramCache]: Analyzing trace with hash 232087102, now seen corresponding path program 5 times [2023-08-25 07:33:07,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:07,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751784413] [2023-08-25 07:33:07,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:07,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:33:07,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:07,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751784413] [2023-08-25 07:33:07,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751784413] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:33:07,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662481700] [2023-08-25 07:33:07,842 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 07:33:07,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:33:07,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:33:07,845 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:33:07,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 07:33:08,026 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-25 07:33:08,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:33:08,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-25 07:33:08,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:33:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 4 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:33:08,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:33:08,872 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:33:08,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662481700] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:33:08,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:33:08,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 29 [2023-08-25 07:33:08,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944882628] [2023-08-25 07:33:08,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:33:08,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-25 07:33:08,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:08,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-25 07:33:08,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2023-08-25 07:33:08,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 364 [2023-08-25 07:33:08,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 57 transitions, 303 flow. Second operand has 31 states, 31 states have (on average 187.61290322580646) internal successors, (5816), 31 states have internal predecessors, (5816), 0 states have call successors, (0), 0 states 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 07:33:08,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:08,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 364 [2023-08-25 07:33:08,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:33:09,665 INFO L124 PetriNetUnfolderBase]: 318/1126 cut-off events. [2023-08-25 07:33:09,665 INFO L125 PetriNetUnfolderBase]: For 1363/1373 co-relation queries the response was YES. [2023-08-25 07:33:09,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3073 conditions, 1126 events. 318/1126 cut-off events. For 1363/1373 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4495 event pairs, 37 based on Foata normal form. 26/1145 useless extension candidates. Maximal degree in co-relation 3050. Up to 159 conditions per place. [2023-08-25 07:33:09,670 INFO L140 encePairwiseOnDemand]: 357/364 looper letters, 0 selfloop transitions, 0 changer transitions 125/125 dead transitions. [2023-08-25 07:33:09,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 125 transitions, 867 flow [2023-08-25 07:33:09,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 07:33:09,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 07:33:09,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2292 transitions. [2023-08-25 07:33:09,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5247252747252747 [2023-08-25 07:33:09,675 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2292 transitions. [2023-08-25 07:33:09,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2292 transitions. [2023-08-25 07:33:09,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:33:09,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2292 transitions. [2023-08-25 07:33:09,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 191.0) internal successors, (2292), 12 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states 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 07:33:09,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 364.0) internal successors, (4732), 13 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states 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 07:33:09,686 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 364.0) internal successors, (4732), 13 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states 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 07:33:09,686 INFO L175 Difference]: Start difference. First operand has 84 places, 57 transitions, 303 flow. Second operand 12 states and 2292 transitions. [2023-08-25 07:33:09,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 125 transitions, 867 flow [2023-08-25 07:33:09,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 125 transitions, 795 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-25 07:33:09,692 INFO L231 Difference]: Finished difference. Result has 86 places, 0 transitions, 0 flow [2023-08-25 07:33:09,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=86, PETRI_TRANSITIONS=0} [2023-08-25 07:33:09,692 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 25 predicate places. [2023-08-25 07:33:09,693 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 0 transitions, 0 flow [2023-08-25 07:33:09,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 187.61290322580646) internal successors, (5816), 31 states have internal predecessors, (5816), 0 states have call successors, (0), 0 states 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 07:33:09,697 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (30 of 31 remaining) [2023-08-25 07:33:09,697 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2023-08-25 07:33:09,697 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2023-08-25 07:33:09,697 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2023-08-25 07:33:09,697 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2023-08-25 07:33:09,697 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2023-08-25 07:33:09,697 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2023-08-25 07:33:09,697 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2023-08-25 07:33:09,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2023-08-25 07:33:09,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2023-08-25 07:33:09,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2023-08-25 07:33:09,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2023-08-25 07:33:09,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2023-08-25 07:33:09,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2023-08-25 07:33:09,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2023-08-25 07:33:09,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2023-08-25 07:33:09,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2023-08-25 07:33:09,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (13 of 31 remaining) [2023-08-25 07:33:09,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 31 remaining) [2023-08-25 07:33:09,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 31 remaining) [2023-08-25 07:33:09,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2023-08-25 07:33:09,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2023-08-25 07:33:09,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2023-08-25 07:33:09,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2023-08-25 07:33:09,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2023-08-25 07:33:09,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2023-08-25 07:33:09,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2023-08-25 07:33:09,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2023-08-25 07:33:09,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2023-08-25 07:33:09,700 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2023-08-25 07:33:09,700 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2023-08-25 07:33:09,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-25 07:33:09,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:33:09,910 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:33:09,914 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 07:33:09,914 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 07:33:09,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 07:33:09 BasicIcfg [2023-08-25 07:33:09,917 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 07:33:09,917 INFO L158 Benchmark]: Toolchain (without parser) took 16000.92ms. Allocated memory was 371.2MB in the beginning and 677.4MB in the end (delta: 306.2MB). Free memory was 346.3MB in the beginning and 391.9MB in the end (delta: -45.6MB). Peak memory consumption was 261.1MB. Max. memory is 16.0GB. [2023-08-25 07:33:09,918 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 371.2MB. Free memory is still 347.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 07:33:09,918 INFO L158 Benchmark]: CACSL2BoogieTranslator took 602.83ms. Allocated memory is still 371.2MB. Free memory was 346.3MB in the beginning and 319.0MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-25 07:33:09,918 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.08ms. Allocated memory is still 371.2MB. Free memory was 319.0MB in the beginning and 316.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 07:33:09,918 INFO L158 Benchmark]: Boogie Preprocessor took 30.57ms. Allocated memory is still 371.2MB. Free memory was 316.4MB in the beginning and 314.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 07:33:09,919 INFO L158 Benchmark]: RCFGBuilder took 625.72ms. Allocated memory is still 371.2MB. Free memory was 314.3MB in the beginning and 347.9MB in the end (delta: -33.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-25 07:33:09,919 INFO L158 Benchmark]: TraceAbstraction took 14668.17ms. Allocated memory was 371.2MB in the beginning and 677.4MB in the end (delta: 306.2MB). Free memory was 347.9MB in the beginning and 391.9MB in the end (delta: -44.0MB). Peak memory consumption was 261.1MB. Max. memory is 16.0GB. [2023-08-25 07:33:09,920 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 371.2MB. Free memory is still 347.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 602.83ms. Allocated memory is still 371.2MB. Free memory was 346.3MB in the beginning and 319.0MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 67.08ms. Allocated memory is still 371.2MB. Free memory was 319.0MB in the beginning and 316.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.57ms. Allocated memory is still 371.2MB. Free memory was 316.4MB in the beginning and 314.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 625.72ms. Allocated memory is still 371.2MB. Free memory was 314.3MB in the beginning and 347.9MB in the end (delta: -33.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * TraceAbstraction took 14668.17ms. Allocated memory was 371.2MB in the beginning and 677.4MB in the end (delta: 306.2MB). Free memory was 347.9MB in the beginning and 391.9MB in the end (delta: -44.0MB). Peak memory consumption was 261.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 218]: Unsoundness Warning unspecified type, defaulting to int C: short [218] - GenericResultAtLocation [Line: 219]: Unsoundness Warning unspecified type, defaulting to int C: short [219] - GenericResultAtLocation [Line: 730]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [730] - GenericResultAtLocation [Line: 871]: Unsoundness Warning unspecified type, defaulting to int C: unsigned long [871] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.7s, 190 PlacesBefore, 61 PlacesAfterwards, 191 TransitionsBefore, 60 TransitionsAfterwards, 7052 CoEnabledTransitionPairs, 7 FixpointIterations, 78 TrivialSequentialCompositions, 71 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 158 TotalNumberOfCompositions, 19909 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9251, independent: 8829, independent conditional: 0, independent unconditional: 8829, dependent: 422, dependent conditional: 0, dependent unconditional: 422, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3606, independent: 3551, independent conditional: 0, independent unconditional: 3551, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9251, independent: 5278, independent conditional: 0, independent unconditional: 5278, dependent: 367, dependent conditional: 0, dependent unconditional: 367, unknown: 3606, unknown conditional: 0, unknown unconditional: 3606] , Statistics on independence cache: Total cache size (in pairs): 390, Positive cache size: 361, Positive conditional cache size: 0, Positive unconditional cache size: 361, Negative cache size: 29, Negative conditional cache size: 0, Negative unconditional cache size: 29, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 880]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 882]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 882]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 902]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 894]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 896]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 902]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 896]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 903]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 897]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 897]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 908]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 909]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 915]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 916]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 917]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 918]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 284 locations, 31 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.6s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 446 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 446 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2664 IncrementalHoareTripleChecker+Invalid, 2698 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 39 mSDtfsCounter, 2664 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 657 GetRequests, 593 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=303occurred in iteration=13, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 845 NumberOfCodeBlocks, 845 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1128 ConstructedInterpolants, 0 QuantifiedInterpolants, 4846 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1730 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 22 InterpolantComputations, 10 PerfectInterpolantSequences, 766/1200 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-25 07:33:09,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...