/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/weaver/unroll-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 07:20:43,347 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 07:20:43,425 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 07:20:43,431 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 07:20:43,432 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 07:20:43,465 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 07:20:43,466 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 07:20:43,468 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 07:20:43,469 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 07:20:43,472 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 07:20:43,473 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 07:20:43,473 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 07:20:43,473 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 07:20:43,474 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 07:20:43,475 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 07:20:43,475 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 07:20:43,475 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 07:20:43,475 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 07:20:43,475 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 07:20:43,476 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 07:20:43,476 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 07:20:43,477 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 07:20:43,477 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 07:20:43,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 07:20:43,478 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 07:20:43,478 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 07:20:43,478 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 07:20:43,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:20:43,478 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 07:20:43,479 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 07:20:43,479 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 07:20:43,480 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 07:20:43,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 07:20:43,480 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 07:20:43,480 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 07:20:43,480 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 07:20:43,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 07:20:43,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 07:20:43,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 07:20:43,828 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 07:20:43,828 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 07:20:43,830 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-2.wvr.c [2023-08-25 07:20:45,068 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 07:20:45,283 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 07:20:45,283 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-2.wvr.c [2023-08-25 07:20:45,293 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a477a76f9/504c4756e7804559a7313274e411e136/FLAG1a36cffa4 [2023-08-25 07:20:45,309 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a477a76f9/504c4756e7804559a7313274e411e136 [2023-08-25 07:20:45,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 07:20:45,318 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 07:20:45,320 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 07:20:45,320 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 07:20:45,323 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 07:20:45,325 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:20:45" (1/1) ... [2023-08-25 07:20:45,325 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c6b43b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:20:45, skipping insertion in model container [2023-08-25 07:20:45,326 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:20:45" (1/1) ... [2023-08-25 07:20:45,350 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 07:20:45,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:20:45,564 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 07:20:45,610 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:20:45,624 INFO L206 MainTranslator]: Completed translation [2023-08-25 07:20:45,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:20:45 WrapperNode [2023-08-25 07:20:45,624 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 07:20:45,625 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 07:20:45,625 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 07:20:45,625 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 07:20:45,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:20:45" (1/1) ... [2023-08-25 07:20:45,652 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:20:45" (1/1) ... [2023-08-25 07:20:45,685 INFO L138 Inliner]: procedures = 24, calls = 33, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 252 [2023-08-25 07:20:45,685 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 07:20:45,686 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 07:20:45,686 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 07:20:45,686 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 07:20:45,693 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:20:45" (1/1) ... [2023-08-25 07:20:45,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:20:45" (1/1) ... [2023-08-25 07:20:45,696 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:20:45" (1/1) ... [2023-08-25 07:20:45,697 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:20:45" (1/1) ... [2023-08-25 07:20:45,717 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:20:45" (1/1) ... [2023-08-25 07:20:45,721 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:20:45" (1/1) ... [2023-08-25 07:20:45,722 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:20:45" (1/1) ... [2023-08-25 07:20:45,724 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:20:45" (1/1) ... [2023-08-25 07:20:45,735 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 07:20:45,736 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 07:20:45,736 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 07:20:45,736 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 07:20:45,737 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:20:45" (1/1) ... [2023-08-25 07:20:45,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:20:45,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:20:45,769 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 07:20:45,770 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 07:20:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 07:20:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 07:20:45,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 07:20:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 07:20:45,796 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 07:20:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 07:20:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 07:20:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 07:20:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-25 07:20:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 07:20:45,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 07:20:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 07:20:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 07:20:45,798 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 07:20:45,886 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 07:20:45,888 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 07:20:46,375 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 07:20:46,384 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 07:20:46,384 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-25 07:20:46,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:20:46 BoogieIcfgContainer [2023-08-25 07:20:46,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 07:20:46,388 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 07:20:46,388 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 07:20:46,391 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 07:20:46,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 07:20:45" (1/3) ... [2023-08-25 07:20:46,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f23fd9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:20:46, skipping insertion in model container [2023-08-25 07:20:46,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:20:45" (2/3) ... [2023-08-25 07:20:46,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f23fd9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:20:46, skipping insertion in model container [2023-08-25 07:20:46,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:20:46" (3/3) ... [2023-08-25 07:20:46,393 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-2.wvr.c [2023-08-25 07:20:46,408 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 07:20:46,408 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2023-08-25 07:20:46,409 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 07:20:46,502 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 07:20:46,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 305 transitions, 626 flow [2023-08-25 07:20:46,641 INFO L124 PetriNetUnfolderBase]: 17/303 cut-off events. [2023-08-25 07:20:46,641 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 07:20:46,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 303 events. 17/303 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 501 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 166. Up to 2 conditions per place. [2023-08-25 07:20:46,650 INFO L82 GeneralOperation]: Start removeDead. Operand has 295 places, 305 transitions, 626 flow [2023-08-25 07:20:46,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 284 places, 294 transitions, 600 flow [2023-08-25 07:20:46,667 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 07:20:46,679 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 284 places, 294 transitions, 600 flow [2023-08-25 07:20:46,685 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 284 places, 294 transitions, 600 flow [2023-08-25 07:20:46,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 294 transitions, 600 flow [2023-08-25 07:20:46,753 INFO L124 PetriNetUnfolderBase]: 17/294 cut-off events. [2023-08-25 07:20:46,754 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 07:20:46,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 294 events. 17/294 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 465 event pairs, 0 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 166. Up to 2 conditions per place. [2023-08-25 07:20:46,765 INFO L119 LiptonReduction]: Number of co-enabled transitions 14860 [2023-08-25 07:20:52,776 INFO L134 LiptonReduction]: Checked pairs total: 59321 [2023-08-25 07:20:52,777 INFO L136 LiptonReduction]: Total number of compositions: 311 [2023-08-25 07:20:52,789 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 07:20:52,794 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;@5d805c59, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 07:20:52,794 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-08-25 07:20:52,795 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 07:20:52,795 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 07:20:52,795 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 07:20:52,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:20:52,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 07:20:52,796 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:20:52,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:20:52,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1156, now seen corresponding path program 1 times [2023-08-25 07:20:52,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:20:52,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671893784] [2023-08-25 07:20:52,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:20:52,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:20:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:20:52,881 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 07:20:52,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:20:52,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671893784] [2023-08-25 07:20:52,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671893784] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:20:52,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:20:52,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 07:20:52,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566200351] [2023-08-25 07:20:52,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:20:52,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 07:20:52,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:20:52,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 07:20:52,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 07:20:52,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 616 [2023-08-25 07:20:52,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 94 transitions, 200 flow. Second operand has 2 states, 2 states have (on average 289.5) internal successors, (579), 2 states have internal predecessors, (579), 0 states have call successors, (0), 0 states 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 07:20:52,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:20:52,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 616 [2023-08-25 07:20:52,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:20:53,131 INFO L124 PetriNetUnfolderBase]: 591/1422 cut-off events. [2023-08-25 07:20:53,131 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-08-25 07:20:53,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2370 conditions, 1422 events. 591/1422 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 9207 event pairs, 392 based on Foata normal form. 160/1341 useless extension candidates. Maximal degree in co-relation 2137. Up to 909 conditions per place. [2023-08-25 07:20:53,141 INFO L140 encePairwiseOnDemand]: 592/616 looper letters, 35 selfloop transitions, 0 changer transitions 0/70 dead transitions. [2023-08-25 07:20:53,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 70 transitions, 222 flow [2023-08-25 07:20:53,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 07:20:53,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 07:20:53,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 637 transitions. [2023-08-25 07:20:53,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170454545454546 [2023-08-25 07:20:53,159 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 637 transitions. [2023-08-25 07:20:53,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 637 transitions. [2023-08-25 07:20:53,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:20:53,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 637 transitions. [2023-08-25 07:20:53,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 318.5) internal successors, (637), 2 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 07:20:53,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 616.0) internal successors, (1848), 3 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states 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 07:20:53,177 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 616.0) internal successors, (1848), 3 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states 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 07:20:53,178 INFO L175 Difference]: Start difference. First operand has 93 places, 94 transitions, 200 flow. Second operand 2 states and 637 transitions. [2023-08-25 07:20:53,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 70 transitions, 222 flow [2023-08-25 07:20:53,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 214 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 07:20:53,186 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 144 flow [2023-08-25 07:20:53,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=144, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2023-08-25 07:20:53,190 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -24 predicate places. [2023-08-25 07:20:53,191 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 144 flow [2023-08-25 07:20:53,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 289.5) internal successors, (579), 2 states have internal predecessors, (579), 0 states have call successors, (0), 0 states 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 07:20:53,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:20:53,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-25 07:20:53,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 07:20:53,192 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:20:53,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:20:53,199 INFO L85 PathProgramCache]: Analyzing trace with hash 354930440, now seen corresponding path program 1 times [2023-08-25 07:20:53,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:20:53,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314448820] [2023-08-25 07:20:53,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:20:53,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:20:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:20:53,335 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 07:20:53,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:20:53,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314448820] [2023-08-25 07:20:53,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314448820] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:20:53,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:20:53,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:20:53,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185699802] [2023-08-25 07:20:53,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:20:53,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:20:53,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:20:53,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:20:53,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:20:53,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 616 [2023-08-25 07:20:53,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states 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 07:20:53,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:20:53,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 616 [2023-08-25 07:20:53,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:20:53,479 INFO L124 PetriNetUnfolderBase]: 583/1371 cut-off events. [2023-08-25 07:20:53,479 INFO L125 PetriNetUnfolderBase]: For 17/62 co-relation queries the response was YES. [2023-08-25 07:20:53,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2341 conditions, 1371 events. 583/1371 cut-off events. For 17/62 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8267 event pairs, 470 based on Foata normal form. 0/1232 useless extension candidates. Maximal degree in co-relation 2338. Up to 954 conditions per place. [2023-08-25 07:20:53,486 INFO L140 encePairwiseOnDemand]: 613/616 looper letters, 36 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-08-25 07:20:53,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 68 transitions, 214 flow [2023-08-25 07:20:53,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:20:53,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:20:53,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 870 transitions. [2023-08-25 07:20:53,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4707792207792208 [2023-08-25 07:20:53,489 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 870 transitions. [2023-08-25 07:20:53,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 870 transitions. [2023-08-25 07:20:53,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:20:53,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 870 transitions. [2023-08-25 07:20:53,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.0) internal successors, (870), 3 states have internal predecessors, (870), 0 states have call successors, (0), 0 states 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 07:20:53,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:20:53,496 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:20:53,496 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 144 flow. Second operand 3 states and 870 transitions. [2023-08-25 07:20:53,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 68 transitions, 214 flow [2023-08-25 07:20:53,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 68 transitions, 214 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:20:53,498 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 142 flow [2023-08-25 07:20:53,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2023-08-25 07:20:53,499 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -24 predicate places. [2023-08-25 07:20:53,499 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 142 flow [2023-08-25 07:20:53,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states 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 07:20:53,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:20:53,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:20:53,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 07:20:53,501 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:20:53,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:20:53,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1786029830, now seen corresponding path program 1 times [2023-08-25 07:20:53,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:20:53,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754427741] [2023-08-25 07:20:53,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:20:53,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:20:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:20:53,591 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 07:20:53,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:20:53,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754427741] [2023-08-25 07:20:53,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754427741] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:20:53,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:20:53,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:20:53,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671196189] [2023-08-25 07:20:53,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:20:53,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:20:53,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:20:53,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:20:53,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:20:53,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 616 [2023-08-25 07:20:53,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states 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 07:20:53,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:20:53,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 616 [2023-08-25 07:20:53,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:20:53,798 INFO L124 PetriNetUnfolderBase]: 591/1343 cut-off events. [2023-08-25 07:20:53,799 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-25 07:20:53,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 1343 events. 591/1343 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8298 event pairs, 392 based on Foata normal form. 0/1103 useless extension candidates. Maximal degree in co-relation 2262. Up to 908 conditions per place. [2023-08-25 07:20:53,806 INFO L140 encePairwiseOnDemand]: 612/616 looper letters, 34 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2023-08-25 07:20:53,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 65 transitions, 206 flow [2023-08-25 07:20:53,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:20:53,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:20:53,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 851 transitions. [2023-08-25 07:20:53,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4604978354978355 [2023-08-25 07:20:53,810 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 851 transitions. [2023-08-25 07:20:53,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 851 transitions. [2023-08-25 07:20:53,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:20:53,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 851 transitions. [2023-08-25 07:20:53,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states 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 07:20:53,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:20:53,818 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:20:53,818 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 142 flow. Second operand 3 states and 851 transitions. [2023-08-25 07:20:53,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 65 transitions, 206 flow [2023-08-25 07:20:53,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 65 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 07:20:53,820 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 137 flow [2023-08-25 07:20:53,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2023-08-25 07:20:53,823 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -26 predicate places. [2023-08-25 07:20:53,823 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 137 flow [2023-08-25 07:20:53,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states 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 07:20:53,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:20:53,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:20:53,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 07:20:53,829 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:20:53,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:20:53,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1786162611, now seen corresponding path program 1 times [2023-08-25 07:20:53,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:20:53,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108342268] [2023-08-25 07:20:53,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:20:53,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:20:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:20:53,946 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 07:20:53,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:20:53,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108342268] [2023-08-25 07:20:53,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108342268] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:20:53,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:20:53,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:20:53,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472786587] [2023-08-25 07:20:53,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:20:53,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:20:53,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:20:53,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:20:53,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:20:53,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 616 [2023-08-25 07:20:53,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states 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 07:20:53,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:20:53,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 616 [2023-08-25 07:20:53,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:20:54,269 INFO L124 PetriNetUnfolderBase]: 1472/2869 cut-off events. [2023-08-25 07:20:54,270 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-08-25 07:20:54,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5269 conditions, 2869 events. 1472/2869 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 17312 event pairs, 576 based on Foata normal form. 0/2431 useless extension candidates. Maximal degree in co-relation 5265. Up to 1238 conditions per place. [2023-08-25 07:20:54,287 INFO L140 encePairwiseOnDemand]: 613/616 looper letters, 73 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2023-08-25 07:20:54,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 100 transitions, 360 flow [2023-08-25 07:20:54,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:20:54,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:20:54,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 907 transitions. [2023-08-25 07:20:54,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908008658008658 [2023-08-25 07:20:54,290 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 907 transitions. [2023-08-25 07:20:54,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 907 transitions. [2023-08-25 07:20:54,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:20:54,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 907 transitions. [2023-08-25 07:20:54,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states 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 07:20:54,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:20:54,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:20:54,297 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 137 flow. Second operand 3 states and 907 transitions. [2023-08-25 07:20:54,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 100 transitions, 360 flow [2023-08-25 07:20:54,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 100 transitions, 359 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 07:20:54,301 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 148 flow [2023-08-25 07:20:54,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2023-08-25 07:20:54,303 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -24 predicate places. [2023-08-25 07:20:54,303 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 148 flow [2023-08-25 07:20:54,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states 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 07:20:54,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:20:54,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:20:54,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 07:20:54,304 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:20:54,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:20:54,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1688021611, now seen corresponding path program 1 times [2023-08-25 07:20:54,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:20:54,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726349230] [2023-08-25 07:20:54,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:20:54,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:20:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:20:54,415 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 07:20:54,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:20:54,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726349230] [2023-08-25 07:20:54,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726349230] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:20:54,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:20:54,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:20:54,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229636509] [2023-08-25 07:20:54,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:20:54,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:20:54,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:20:54,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:20:54,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:20:54,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 616 [2023-08-25 07:20:54,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states 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 07:20:54,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:20:54,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 616 [2023-08-25 07:20:54,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:20:54,627 INFO L124 PetriNetUnfolderBase]: 942/2214 cut-off events. [2023-08-25 07:20:54,627 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2023-08-25 07:20:54,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3885 conditions, 2214 events. 942/2214 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 14762 event pairs, 739 based on Foata normal form. 0/1956 useless extension candidates. Maximal degree in co-relation 3880. Up to 1518 conditions per place. [2023-08-25 07:20:54,640 INFO L140 encePairwiseOnDemand]: 613/616 looper letters, 35 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-25 07:20:54,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 224 flow [2023-08-25 07:20:54,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:20:54,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:20:54,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 850 transitions. [2023-08-25 07:20:54,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45995670995670995 [2023-08-25 07:20:54,646 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 850 transitions. [2023-08-25 07:20:54,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 850 transitions. [2023-08-25 07:20:54,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:20:54,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 850 transitions. [2023-08-25 07:20:54,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.3333333333333) internal successors, (850), 3 states have internal predecessors, (850), 0 states have call successors, (0), 0 states 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 07:20:54,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:20:54,652 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:20:54,653 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 148 flow. Second operand 3 states and 850 transitions. [2023-08-25 07:20:54,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 224 flow [2023-08-25 07:20:54,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 07:20:54,655 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 158 flow [2023-08-25 07:20:54,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2023-08-25 07:20:54,656 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -22 predicate places. [2023-08-25 07:20:54,656 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 158 flow [2023-08-25 07:20:54,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states 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 07:20:54,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:20:54,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:20:54,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 07:20:54,657 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:20:54,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:20:54,657 INFO L85 PathProgramCache]: Analyzing trace with hash -121812681, now seen corresponding path program 1 times [2023-08-25 07:20:54,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:20:54,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340214591] [2023-08-25 07:20:54,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:20:54,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:20:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:20:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:20:54,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:20:54,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340214591] [2023-08-25 07:20:54,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340214591] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:20:54,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:20:54,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 07:20:54,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569341607] [2023-08-25 07:20:54,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:20:54,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:20:54,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:20:54,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:20:54,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:20:54,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 616 [2023-08-25 07:20:54,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 158 flow. Second operand has 6 states, 6 states have (on average 248.83333333333334) internal successors, (1493), 6 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states 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 07:20:54,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:20:54,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 616 [2023-08-25 07:20:54,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:20:56,129 INFO L124 PetriNetUnfolderBase]: 7592/11741 cut-off events. [2023-08-25 07:20:56,129 INFO L125 PetriNetUnfolderBase]: For 389/389 co-relation queries the response was YES. [2023-08-25 07:20:56,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23760 conditions, 11741 events. 7592/11741 cut-off events. For 389/389 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 72488 event pairs, 597 based on Foata normal form. 0/10397 useless extension candidates. Maximal degree in co-relation 23754. Up to 4480 conditions per place. [2023-08-25 07:20:56,193 INFO L140 encePairwiseOnDemand]: 611/616 looper letters, 207 selfloop transitions, 4 changer transitions 0/218 dead transitions. [2023-08-25 07:20:56,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 218 transitions, 906 flow [2023-08-25 07:20:56,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:20:56,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:20:56,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1688 transitions. [2023-08-25 07:20:56,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45670995670995673 [2023-08-25 07:20:56,198 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1688 transitions. [2023-08-25 07:20:56,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1688 transitions. [2023-08-25 07:20:56,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:20:56,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1688 transitions. [2023-08-25 07:20:56,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 281.3333333333333) internal successors, (1688), 6 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states 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 07:20:56,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 616.0) internal successors, (4312), 7 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states 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 07:20:56,209 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 616.0) internal successors, (4312), 7 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states 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 07:20:56,209 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 158 flow. Second operand 6 states and 1688 transitions. [2023-08-25 07:20:56,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 218 transitions, 906 flow [2023-08-25 07:20:56,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 218 transitions, 902 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 07:20:56,214 INFO L231 Difference]: Finished difference. Result has 74 places, 66 transitions, 160 flow [2023-08-25 07:20:56,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=74, PETRI_TRANSITIONS=66} [2023-08-25 07:20:56,215 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -19 predicate places. [2023-08-25 07:20:56,215 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 66 transitions, 160 flow [2023-08-25 07:20:56,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 248.83333333333334) internal successors, (1493), 6 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states 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 07:20:56,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:20:56,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:20:56,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 07:20:56,216 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:20:56,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:20:56,217 INFO L85 PathProgramCache]: Analyzing trace with hash -422447718, now seen corresponding path program 1 times [2023-08-25 07:20:56,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:20:56,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704336687] [2023-08-25 07:20:56,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:20:56,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:20:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:20:56,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:20:56,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:20:56,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704336687] [2023-08-25 07:20:56,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704336687] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:20:56,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:20:56,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:20:56,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489619910] [2023-08-25 07:20:56,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:20:56,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:20:56,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:20:56,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:20:56,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:20:56,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 616 [2023-08-25 07:20:56,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 66 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 0 states have call successors, (0), 0 states 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 07:20:56,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:20:56,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 616 [2023-08-25 07:20:56,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:20:56,617 INFO L124 PetriNetUnfolderBase]: 1908/3610 cut-off events. [2023-08-25 07:20:56,618 INFO L125 PetriNetUnfolderBase]: For 815/815 co-relation queries the response was YES. [2023-08-25 07:20:56,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7595 conditions, 3610 events. 1908/3610 cut-off events. For 815/815 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 21786 event pairs, 595 based on Foata normal form. 0/3209 useless extension candidates. Maximal degree in co-relation 7589. Up to 2057 conditions per place. [2023-08-25 07:20:56,636 INFO L140 encePairwiseOnDemand]: 613/616 looper letters, 70 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2023-08-25 07:20:56,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 93 transitions, 368 flow [2023-08-25 07:20:56,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:20:56,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:20:56,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 871 transitions. [2023-08-25 07:20:56,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4713203463203463 [2023-08-25 07:20:56,643 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 871 transitions. [2023-08-25 07:20:56,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 871 transitions. [2023-08-25 07:20:56,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:20:56,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 871 transitions. [2023-08-25 07:20:56,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 0 states have call successors, (0), 0 states 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 07:20:56,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:20:56,648 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:20:56,648 INFO L175 Difference]: Start difference. First operand has 74 places, 66 transitions, 160 flow. Second operand 3 states and 871 transitions. [2023-08-25 07:20:56,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 93 transitions, 368 flow [2023-08-25 07:20:56,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 93 transitions, 359 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 07:20:56,652 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 165 flow [2023-08-25 07:20:56,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2023-08-25 07:20:56,653 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -20 predicate places. [2023-08-25 07:20:56,653 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 165 flow [2023-08-25 07:20:56,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 0 states have call successors, (0), 0 states 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 07:20:56,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:20:56,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:20:56,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 07:20:56,654 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:20:56,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:20:56,654 INFO L85 PathProgramCache]: Analyzing trace with hash -45730083, now seen corresponding path program 1 times [2023-08-25 07:20:56,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:20:56,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649359471] [2023-08-25 07:20:56,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:20:56,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:20:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:20:56,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:20:56,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:20:56,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649359471] [2023-08-25 07:20:56,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649359471] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:20:56,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:20:56,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:20:56,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212468361] [2023-08-25 07:20:56,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:20:56,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:20:56,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:20:56,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:20:56,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:20:56,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 616 [2023-08-25 07:20:56,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:20:56,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:20:56,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 616 [2023-08-25 07:20:56,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:20:56,946 INFO L124 PetriNetUnfolderBase]: 1260/2836 cut-off events. [2023-08-25 07:20:56,946 INFO L125 PetriNetUnfolderBase]: For 287/287 co-relation queries the response was YES. [2023-08-25 07:20:56,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5253 conditions, 2836 events. 1260/2836 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 18607 event pairs, 446 based on Foata normal form. 0/2626 useless extension candidates. Maximal degree in co-relation 5246. Up to 1947 conditions per place. [2023-08-25 07:20:56,964 INFO L140 encePairwiseOnDemand]: 611/616 looper letters, 53 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-08-25 07:20:56,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 81 transitions, 306 flow [2023-08-25 07:20:56,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:20:56,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:20:56,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 886 transitions. [2023-08-25 07:20:56,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47943722943722944 [2023-08-25 07:20:56,967 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 886 transitions. [2023-08-25 07:20:56,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 886 transitions. [2023-08-25 07:20:56,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:20:56,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 886 transitions. [2023-08-25 07:20:56,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 295.3333333333333) internal successors, (886), 3 states have internal predecessors, (886), 0 states have call successors, (0), 0 states 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 07:20:56,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:20:56,973 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:20:56,973 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 165 flow. Second operand 3 states and 886 transitions. [2023-08-25 07:20:56,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 81 transitions, 306 flow [2023-08-25 07:20:56,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 81 transitions, 304 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 07:20:56,976 INFO L231 Difference]: Finished difference. Result has 72 places, 66 transitions, 171 flow [2023-08-25 07:20:56,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=72, PETRI_TRANSITIONS=66} [2023-08-25 07:20:56,977 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -21 predicate places. [2023-08-25 07:20:56,977 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 66 transitions, 171 flow [2023-08-25 07:20:56,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:20:56,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:20:56,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:20:56,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 07:20:56,978 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:20:56,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:20:56,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1661846830, now seen corresponding path program 1 times [2023-08-25 07:20:56,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:20:56,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195781943] [2023-08-25 07:20:56,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:20:56,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:20:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:20:57,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:20:57,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:20:57,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195781943] [2023-08-25 07:20:57,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195781943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:20:57,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:20:57,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 07:20:57,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774849195] [2023-08-25 07:20:57,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:20:57,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:20:57,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:20:57,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:20:57,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:20:57,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 616 [2023-08-25 07:20:57,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 66 transitions, 171 flow. Second operand has 6 states, 6 states have (on average 245.5) internal successors, (1473), 6 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states 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 07:20:57,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:20:57,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 616 [2023-08-25 07:20:57,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:20:58,762 INFO L124 PetriNetUnfolderBase]: 9866/15447 cut-off events. [2023-08-25 07:20:58,762 INFO L125 PetriNetUnfolderBase]: For 1050/1050 co-relation queries the response was YES. [2023-08-25 07:20:58,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33488 conditions, 15447 events. 9866/15447 cut-off events. For 1050/1050 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 92903 event pairs, 6003 based on Foata normal form. 412/14894 useless extension candidates. Maximal degree in co-relation 33481. Up to 10594 conditions per place. [2023-08-25 07:20:58,838 INFO L140 encePairwiseOnDemand]: 610/616 looper letters, 179 selfloop transitions, 6 changer transitions 0/189 dead transitions. [2023-08-25 07:20:58,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 189 transitions, 827 flow [2023-08-25 07:20:58,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:20:58,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:20:58,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1635 transitions. [2023-08-25 07:20:58,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44237012987012986 [2023-08-25 07:20:58,843 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1635 transitions. [2023-08-25 07:20:58,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1635 transitions. [2023-08-25 07:20:58,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:20:58,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1635 transitions. [2023-08-25 07:20:58,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 272.5) internal successors, (1635), 6 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states 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 07:20:58,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 616.0) internal successors, (4312), 7 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states 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 07:20:58,853 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 616.0) internal successors, (4312), 7 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states 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 07:20:58,853 INFO L175 Difference]: Start difference. First operand has 72 places, 66 transitions, 171 flow. Second operand 6 states and 1635 transitions. [2023-08-25 07:20:58,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 189 transitions, 827 flow [2023-08-25 07:20:58,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 189 transitions, 827 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:20:58,857 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 181 flow [2023-08-25 07:20:58,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=181, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2023-08-25 07:20:58,857 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -17 predicate places. [2023-08-25 07:20:58,857 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 181 flow [2023-08-25 07:20:58,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 245.5) internal successors, (1473), 6 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states 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 07:20:58,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:20:58,858 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 07:20:58,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 07:20:58,859 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:20:58,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:20:58,859 INFO L85 PathProgramCache]: Analyzing trace with hash -520305899, now seen corresponding path program 1 times [2023-08-25 07:20:58,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:20:58,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376615463] [2023-08-25 07:20:58,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:20:58,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:20:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:20:59,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:20:59,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:20:59,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376615463] [2023-08-25 07:20:59,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376615463] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:20:59,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:20:59,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 07:20:59,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131147289] [2023-08-25 07:20:59,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:20:59,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:20:59,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:20:59,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:20:59,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:20:59,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 616 [2023-08-25 07:20:59,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 242.66666666666666) internal successors, (1456), 6 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 07:20:59,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:20:59,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 616 [2023-08-25 07:20:59,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:21:00,462 INFO L124 PetriNetUnfolderBase]: 9014/14169 cut-off events. [2023-08-25 07:21:00,462 INFO L125 PetriNetUnfolderBase]: For 2879/2879 co-relation queries the response was YES. [2023-08-25 07:21:00,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32603 conditions, 14169 events. 9014/14169 cut-off events. For 2879/2879 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 83354 event pairs, 4973 based on Foata normal form. 316/13720 useless extension candidates. Maximal degree in co-relation 32595. Up to 8668 conditions per place. [2023-08-25 07:21:00,533 INFO L140 encePairwiseOnDemand]: 604/616 looper letters, 152 selfloop transitions, 11 changer transitions 0/167 dead transitions. [2023-08-25 07:21:00,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 167 transitions, 799 flow [2023-08-25 07:21:00,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:21:00,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:21:00,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1596 transitions. [2023-08-25 07:21:00,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2023-08-25 07:21:00,538 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1596 transitions. [2023-08-25 07:21:00,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1596 transitions. [2023-08-25 07:21:00,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:21:00,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1596 transitions. [2023-08-25 07:21:00,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 07:21:00,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 616.0) internal successors, (4312), 7 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states 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 07:21:00,548 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 616.0) internal successors, (4312), 7 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states 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 07:21:00,548 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 181 flow. Second operand 6 states and 1596 transitions. [2023-08-25 07:21:00,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 167 transitions, 799 flow [2023-08-25 07:21:00,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 167 transitions, 739 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-25 07:21:00,555 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 187 flow [2023-08-25 07:21:00,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2023-08-25 07:21:00,557 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -19 predicate places. [2023-08-25 07:21:00,557 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 187 flow [2023-08-25 07:21:00,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 242.66666666666666) internal successors, (1456), 6 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 07:21:00,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:21:00,564 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] [2023-08-25 07:21:00,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 07:21:00,564 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:21:00,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:21:00,564 INFO L85 PathProgramCache]: Analyzing trace with hash -201083080, now seen corresponding path program 1 times [2023-08-25 07:21:00,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:21:00,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563239675] [2023-08-25 07:21:00,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:21:00,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:21:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:21:00,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:21:00,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:21:00,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563239675] [2023-08-25 07:21:00,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563239675] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:21:00,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:21:00,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 07:21:00,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598854905] [2023-08-25 07:21:00,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:21:00,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:21:00,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:21:00,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:21:00,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:21:00,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 616 [2023-08-25 07:21:00,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 187 flow. Second operand has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states 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 07:21:00,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:21:00,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 616 [2023-08-25 07:21:00,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:21:02,166 INFO L124 PetriNetUnfolderBase]: 8950/14031 cut-off events. [2023-08-25 07:21:02,166 INFO L125 PetriNetUnfolderBase]: For 1589/1589 co-relation queries the response was YES. [2023-08-25 07:21:02,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32788 conditions, 14031 events. 8950/14031 cut-off events. For 1589/1589 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 82277 event pairs, 7805 based on Foata normal form. 0/13332 useless extension candidates. Maximal degree in co-relation 32780. Up to 13208 conditions per place. [2023-08-25 07:21:02,222 INFO L140 encePairwiseOnDemand]: 611/616 looper letters, 146 selfloop transitions, 4 changer transitions 0/154 dead transitions. [2023-08-25 07:21:02,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 154 transitions, 801 flow [2023-08-25 07:21:02,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:21:02,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:21:02,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1620 transitions. [2023-08-25 07:21:02,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383116883116883 [2023-08-25 07:21:02,226 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1620 transitions. [2023-08-25 07:21:02,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1620 transitions. [2023-08-25 07:21:02,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:21:02,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1620 transitions. [2023-08-25 07:21:02,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 270.0) internal successors, (1620), 6 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states 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 07:21:02,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 616.0) internal successors, (4312), 7 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states 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 07:21:02,235 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 616.0) internal successors, (4312), 7 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states 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 07:21:02,235 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 187 flow. Second operand 6 states and 1620 transitions. [2023-08-25 07:21:02,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 154 transitions, 801 flow [2023-08-25 07:21:02,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 154 transitions, 691 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-25 07:21:02,246 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 171 flow [2023-08-25 07:21:02,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=171, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2023-08-25 07:21:02,246 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -20 predicate places. [2023-08-25 07:21:02,246 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 171 flow [2023-08-25 07:21:02,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states 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 07:21:02,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:21:02,247 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] [2023-08-25 07:21:02,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-25 07:21:02,247 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:21:02,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:21:02,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1490553498, now seen corresponding path program 1 times [2023-08-25 07:21:02,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:21:02,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050357584] [2023-08-25 07:21:02,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:21:02,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:21:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:21:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:21:02,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:21:02,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050357584] [2023-08-25 07:21:02,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050357584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:21:02,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:21:02,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 07:21:02,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083969127] [2023-08-25 07:21:02,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:21:02,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:21:02,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:21:02,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:21:02,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:21:02,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 616 [2023-08-25 07:21:02,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 260.3333333333333) internal successors, (781), 3 states have internal predecessors, (781), 0 states have call successors, (0), 0 states 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 07:21:02,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:21:02,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 616 [2023-08-25 07:21:02,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:21:02,797 INFO L124 PetriNetUnfolderBase]: 2522/4392 cut-off events. [2023-08-25 07:21:02,797 INFO L125 PetriNetUnfolderBase]: For 462/462 co-relation queries the response was YES. [2023-08-25 07:21:02,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9359 conditions, 4392 events. 2522/4392 cut-off events. For 462/462 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 23974 event pairs, 861 based on Foata normal form. 1/4150 useless extension candidates. Maximal degree in co-relation 9351. Up to 3485 conditions per place. [2023-08-25 07:21:02,825 INFO L140 encePairwiseOnDemand]: 612/616 looper letters, 75 selfloop transitions, 3 changer transitions 1/91 dead transitions. [2023-08-25 07:21:02,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 91 transitions, 400 flow [2023-08-25 07:21:02,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:21:02,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:21:02,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 843 transitions. [2023-08-25 07:21:02,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45616883116883117 [2023-08-25 07:21:02,828 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 843 transitions. [2023-08-25 07:21:02,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 843 transitions. [2023-08-25 07:21:02,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:21:02,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 843 transitions. [2023-08-25 07:21:02,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 281.0) internal successors, (843), 3 states have internal predecessors, (843), 0 states have call successors, (0), 0 states 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 07:21:02,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:21:02,835 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:21:02,835 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 171 flow. Second operand 3 states and 843 transitions. [2023-08-25 07:21:02,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 91 transitions, 400 flow [2023-08-25 07:21:02,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 91 transitions, 391 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 07:21:02,838 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 187 flow [2023-08-25 07:21:02,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2023-08-25 07:21:02,840 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -21 predicate places. [2023-08-25 07:21:02,840 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 187 flow [2023-08-25 07:21:02,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.3333333333333) internal successors, (781), 3 states have internal predecessors, (781), 0 states have call successors, (0), 0 states 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 07:21:02,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:21:02,840 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:21:02,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-25 07:21:02,841 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:21:02,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:21:02,841 INFO L85 PathProgramCache]: Analyzing trace with hash -336169897, now seen corresponding path program 1 times [2023-08-25 07:21:02,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:21:02,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080518463] [2023-08-25 07:21:02,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:21:02,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:21:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:21:03,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:21:03,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:21:03,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080518463] [2023-08-25 07:21:03,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080518463] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:21:03,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:21:03,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 07:21:03,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152805905] [2023-08-25 07:21:03,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:21:03,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 07:21:03,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:21:03,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 07:21:03,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-25 07:21:03,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 616 [2023-08-25 07:21:03,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 278.4) internal successors, (1392), 5 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states 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 07:21:03,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:21:03,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 616 [2023-08-25 07:21:03,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:21:03,443 INFO L124 PetriNetUnfolderBase]: 1657/3608 cut-off events. [2023-08-25 07:21:03,443 INFO L125 PetriNetUnfolderBase]: For 687/717 co-relation queries the response was YES. [2023-08-25 07:21:03,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7247 conditions, 3608 events. 1657/3608 cut-off events. For 687/717 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 23972 event pairs, 660 based on Foata normal form. 3/3401 useless extension candidates. Maximal degree in co-relation 7238. Up to 1257 conditions per place. [2023-08-25 07:21:03,459 INFO L140 encePairwiseOnDemand]: 607/616 looper letters, 110 selfloop transitions, 10 changer transitions 0/140 dead transitions. [2023-08-25 07:21:03,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 140 transitions, 643 flow [2023-08-25 07:21:03,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 07:21:03,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 07:21:03,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1479 transitions. [2023-08-25 07:21:03,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801948051948052 [2023-08-25 07:21:03,464 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1479 transitions. [2023-08-25 07:21:03,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1479 transitions. [2023-08-25 07:21:03,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:21:03,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1479 transitions. [2023-08-25 07:21:03,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 295.8) internal successors, (1479), 5 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states 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 07:21:03,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 616.0) internal successors, (3696), 6 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 07:21:03,471 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 616.0) internal successors, (3696), 6 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 07:21:03,472 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 187 flow. Second operand 5 states and 1479 transitions. [2023-08-25 07:21:03,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 140 transitions, 643 flow [2023-08-25 07:21:03,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 140 transitions, 636 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 07:21:03,474 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 257 flow [2023-08-25 07:21:03,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=257, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2023-08-25 07:21:03,475 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -15 predicate places. [2023-08-25 07:21:03,475 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 257 flow [2023-08-25 07:21:03,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.4) internal successors, (1392), 5 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states 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 07:21:03,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:21:03,476 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:21:03,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-25 07:21:03,476 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:21:03,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:21:03,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1369019007, now seen corresponding path program 2 times [2023-08-25 07:21:03,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:21:03,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401084643] [2023-08-25 07:21:03,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:21:03,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:21:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:21:03,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:21:03,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:21:03,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401084643] [2023-08-25 07:21:03,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401084643] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:21:03,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270088235] [2023-08-25 07:21:03,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 07:21:03,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:21:03,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:21:03,645 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 07:21:03,665 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 07:21:03,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 07:21:03,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:21:03,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 07:21:03,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:21:03,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:21:03,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:21:04,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:21:04,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270088235] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 07:21:04,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 07:21:04,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2023-08-25 07:21:04,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939554782] [2023-08-25 07:21:04,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:21:04,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 07:21:04,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:21:04,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 07:21:04,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-25 07:21:04,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 616 [2023-08-25 07:21:04,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 257 flow. Second operand has 4 states, 4 states have (on average 282.25) internal successors, (1129), 4 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states 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 07:21:04,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:21:04,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 616 [2023-08-25 07:21:04,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:21:04,425 INFO L124 PetriNetUnfolderBase]: 1618/3437 cut-off events. [2023-08-25 07:21:04,426 INFO L125 PetriNetUnfolderBase]: For 1614/1656 co-relation queries the response was YES. [2023-08-25 07:21:04,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7701 conditions, 3437 events. 1618/3437 cut-off events. For 1614/1656 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 22201 event pairs, 281 based on Foata normal form. 56/3445 useless extension candidates. Maximal degree in co-relation 7689. Up to 1714 conditions per place. [2023-08-25 07:21:04,446 INFO L140 encePairwiseOnDemand]: 610/616 looper letters, 67 selfloop transitions, 11 changer transitions 1/100 dead transitions. [2023-08-25 07:21:04,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 100 transitions, 526 flow [2023-08-25 07:21:04,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 07:21:04,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 07:21:04,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1169 transitions. [2023-08-25 07:21:04,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744318181818182 [2023-08-25 07:21:04,450 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1169 transitions. [2023-08-25 07:21:04,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1169 transitions. [2023-08-25 07:21:04,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:21:04,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1169 transitions. [2023-08-25 07:21:04,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 292.25) internal successors, (1169), 4 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states 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 07:21:04,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 616.0) internal successors, (3080), 5 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states 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 07:21:04,457 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 616.0) internal successors, (3080), 5 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states 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 07:21:04,457 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 257 flow. Second operand 4 states and 1169 transitions. [2023-08-25 07:21:04,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 100 transitions, 526 flow [2023-08-25 07:21:04,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 100 transitions, 512 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 07:21:04,461 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 323 flow [2023-08-25 07:21:04,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=323, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2023-08-25 07:21:04,462 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -11 predicate places. [2023-08-25 07:21:04,462 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 323 flow [2023-08-25 07:21:04,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 282.25) internal successors, (1129), 4 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states 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 07:21:04,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:21:04,463 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:21:04,478 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 07:21:04,673 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,SelfDestructingSolverStorable13 [2023-08-25 07:21:04,674 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:21:04,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:21:04,674 INFO L85 PathProgramCache]: Analyzing trace with hash 517098513, now seen corresponding path program 3 times [2023-08-25 07:21:04,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:21:04,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167723550] [2023-08-25 07:21:04,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:21:04,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:21:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:21:04,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:21:04,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:21:04,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167723550] [2023-08-25 07:21:04,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167723550] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:21:04,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:21:04,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 07:21:04,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902735802] [2023-08-25 07:21:04,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:21:04,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 07:21:04,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:21:04,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 07:21:04,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-25 07:21:04,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 616 [2023-08-25 07:21:04,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 323 flow. Second operand has 5 states, 5 states have (on average 278.4) internal successors, (1392), 5 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states 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 07:21:04,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:21:04,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 616 [2023-08-25 07:21:04,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:21:05,399 INFO L124 PetriNetUnfolderBase]: 1802/3874 cut-off events. [2023-08-25 07:21:05,399 INFO L125 PetriNetUnfolderBase]: For 3212/3271 co-relation queries the response was YES. [2023-08-25 07:21:05,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9199 conditions, 3874 events. 1802/3874 cut-off events. For 3212/3271 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 25644 event pairs, 782 based on Foata normal form. 37/3881 useless extension candidates. Maximal degree in co-relation 9185. Up to 1321 conditions per place. [2023-08-25 07:21:05,429 INFO L140 encePairwiseOnDemand]: 607/616 looper letters, 120 selfloop transitions, 14 changer transitions 9/163 dead transitions. [2023-08-25 07:21:05,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 163 transitions, 939 flow [2023-08-25 07:21:05,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:21:05,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:21:05,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1763 transitions. [2023-08-25 07:21:05,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4770021645021645 [2023-08-25 07:21:05,435 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1763 transitions. [2023-08-25 07:21:05,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1763 transitions. [2023-08-25 07:21:05,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:21:05,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1763 transitions. [2023-08-25 07:21:05,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 293.8333333333333) internal successors, (1763), 6 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states 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 07:21:05,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 616.0) internal successors, (4312), 7 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states 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 07:21:05,445 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 616.0) internal successors, (4312), 7 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states 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 07:21:05,445 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 323 flow. Second operand 6 states and 1763 transitions. [2023-08-25 07:21:05,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 163 transitions, 939 flow [2023-08-25 07:21:05,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 163 transitions, 929 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-08-25 07:21:05,452 INFO L231 Difference]: Finished difference. Result has 91 places, 83 transitions, 434 flow [2023-08-25 07:21:05,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=434, PETRI_PLACES=91, PETRI_TRANSITIONS=83} [2023-08-25 07:21:05,453 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -2 predicate places. [2023-08-25 07:21:05,454 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 83 transitions, 434 flow [2023-08-25 07:21:05,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.4) internal successors, (1392), 5 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states 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 07:21:05,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:21:05,454 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:21:05,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-25 07:21:05,455 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:21:05,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:21:05,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1353992593, now seen corresponding path program 4 times [2023-08-25 07:21:05,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:21:05,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115233809] [2023-08-25 07:21:05,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:21:05,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:21:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:21:05,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:21:05,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:21:05,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115233809] [2023-08-25 07:21:05,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115233809] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:21:05,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:21:05,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 07:21:05,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753590554] [2023-08-25 07:21:05,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:21:05,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 07:21:05,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:21:05,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 07:21:05,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 07:21:05,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 616 [2023-08-25 07:21:05,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 434 flow. Second operand has 5 states, 5 states have (on average 278.4) internal successors, (1392), 5 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states 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 07:21:05,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:21:05,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 616 [2023-08-25 07:21:05,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:21:06,071 INFO L124 PetriNetUnfolderBase]: 1847/3915 cut-off events. [2023-08-25 07:21:06,072 INFO L125 PetriNetUnfolderBase]: For 5022/5058 co-relation queries the response was YES. [2023-08-25 07:21:06,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10052 conditions, 3915 events. 1847/3915 cut-off events. For 5022/5058 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 25530 event pairs, 881 based on Foata normal form. 24/3899 useless extension candidates. Maximal degree in co-relation 10033. Up to 1635 conditions per place. [2023-08-25 07:21:06,090 INFO L140 encePairwiseOnDemand]: 610/616 looper letters, 95 selfloop transitions, 9 changer transitions 7/131 dead transitions. [2023-08-25 07:21:06,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 131 transitions, 877 flow [2023-08-25 07:21:06,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 07:21:06,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 07:21:06,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1450 transitions. [2023-08-25 07:21:06,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4707792207792208 [2023-08-25 07:21:06,095 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1450 transitions. [2023-08-25 07:21:06,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1450 transitions. [2023-08-25 07:21:06,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:21:06,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1450 transitions. [2023-08-25 07:21:06,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states 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 07:21:06,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 616.0) internal successors, (3696), 6 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 07:21:06,102 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 616.0) internal successors, (3696), 6 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 07:21:06,102 INFO L175 Difference]: Start difference. First operand has 91 places, 83 transitions, 434 flow. Second operand 5 states and 1450 transitions. [2023-08-25 07:21:06,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 131 transitions, 877 flow [2023-08-25 07:21:06,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 131 transitions, 860 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-25 07:21:06,110 INFO L231 Difference]: Finished difference. Result has 97 places, 85 transitions, 481 flow [2023-08-25 07:21:06,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=481, PETRI_PLACES=97, PETRI_TRANSITIONS=85} [2023-08-25 07:21:06,110 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 4 predicate places. [2023-08-25 07:21:06,111 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 85 transitions, 481 flow [2023-08-25 07:21:06,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.4) internal successors, (1392), 5 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states 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 07:21:06,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:21:06,111 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:21:06,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-25 07:21:06,111 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:21:06,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:21:06,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1100516373, now seen corresponding path program 5 times [2023-08-25 07:21:06,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:21:06,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33633480] [2023-08-25 07:21:06,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:21:06,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:21:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:21:06,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:21:06,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:21:06,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33633480] [2023-08-25 07:21:06,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33633480] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:21:06,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528454295] [2023-08-25 07:21:06,260 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 07:21:06,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:21:06,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:21:06,262 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 07:21:06,263 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 07:21:06,424 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 07:21:06,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:21:06,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 07:21:06,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:21:06,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:21:06,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:21:06,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:21:06,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528454295] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:21:06,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:21:06,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 8 [2023-08-25 07:21:06,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354292686] [2023-08-25 07:21:06,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:21:06,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 07:21:06,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:21:06,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 07:21:06,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-08-25 07:21:06,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 616 [2023-08-25 07:21:06,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 85 transitions, 481 flow. Second operand has 8 states, 8 states have (on average 279.25) internal successors, (2234), 8 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states 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 07:21:06,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:21:06,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 616 [2023-08-25 07:21:06,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:21:07,455 INFO L124 PetriNetUnfolderBase]: 2642/5569 cut-off events. [2023-08-25 07:21:07,455 INFO L125 PetriNetUnfolderBase]: For 7779/7839 co-relation queries the response was YES. [2023-08-25 07:21:07,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14223 conditions, 5569 events. 2642/5569 cut-off events. For 7779/7839 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 39012 event pairs, 473 based on Foata normal form. 77/5599 useless extension candidates. Maximal degree in co-relation 14201. Up to 937 conditions per place. [2023-08-25 07:21:07,485 INFO L140 encePairwiseOnDemand]: 605/616 looper letters, 178 selfloop transitions, 48 changer transitions 6/252 dead transitions. [2023-08-25 07:21:07,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 252 transitions, 1613 flow [2023-08-25 07:21:07,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 07:21:07,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 07:21:07,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3216 transitions. [2023-08-25 07:21:07,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47461629279811096 [2023-08-25 07:21:07,494 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3216 transitions. [2023-08-25 07:21:07,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3216 transitions. [2023-08-25 07:21:07,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:21:07,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3216 transitions. [2023-08-25 07:21:07,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 292.3636363636364) internal successors, (3216), 11 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states 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 07:21:07,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 616.0) internal successors, (7392), 12 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states 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 07:21:07,510 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 616.0) internal successors, (7392), 12 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states 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 07:21:07,510 INFO L175 Difference]: Start difference. First operand has 97 places, 85 transitions, 481 flow. Second operand 11 states and 3216 transitions. [2023-08-25 07:21:07,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 252 transitions, 1613 flow [2023-08-25 07:21:07,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 252 transitions, 1599 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-25 07:21:07,523 INFO L231 Difference]: Finished difference. Result has 112 places, 113 transitions, 882 flow [2023-08-25 07:21:07,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=882, PETRI_PLACES=112, PETRI_TRANSITIONS=113} [2023-08-25 07:21:07,523 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 19 predicate places. [2023-08-25 07:21:07,524 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 113 transitions, 882 flow [2023-08-25 07:21:07,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 279.25) internal successors, (2234), 8 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states 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 07:21:07,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:21:07,524 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:21:07,532 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 07:21:07,729 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,SelfDestructingSolverStorable16 [2023-08-25 07:21:07,730 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:21:07,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:21:07,730 INFO L85 PathProgramCache]: Analyzing trace with hash 130548625, now seen corresponding path program 6 times [2023-08-25 07:21:07,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:21:07,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052929340] [2023-08-25 07:21:07,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:21:07,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:21:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:21:07,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:21:07,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:21:07,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052929340] [2023-08-25 07:21:07,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052929340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:21:07,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:21:07,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 07:21:07,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434133498] [2023-08-25 07:21:07,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:21:07,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 07:21:07,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:21:07,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 07:21:07,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-25 07:21:07,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 616 [2023-08-25 07:21:07,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 113 transitions, 882 flow. Second operand has 5 states, 5 states have (on average 278.4) internal successors, (1392), 5 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states 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 07:21:07,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:21:07,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 616 [2023-08-25 07:21:07,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:21:08,678 INFO L124 PetriNetUnfolderBase]: 2622/5662 cut-off events. [2023-08-25 07:21:08,678 INFO L125 PetriNetUnfolderBase]: For 14119/14177 co-relation queries the response was YES. [2023-08-25 07:21:08,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15873 conditions, 5662 events. 2622/5662 cut-off events. For 14119/14177 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 40591 event pairs, 1342 based on Foata normal form. 35/5616 useless extension candidates. Maximal degree in co-relation 15845. Up to 2253 conditions per place. [2023-08-25 07:21:08,715 INFO L140 encePairwiseOnDemand]: 609/616 looper letters, 125 selfloop transitions, 19 changer transitions 5/169 dead transitions. [2023-08-25 07:21:08,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 169 transitions, 1466 flow [2023-08-25 07:21:08,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 07:21:08,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 07:21:08,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1463 transitions. [2023-08-25 07:21:08,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2023-08-25 07:21:08,720 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1463 transitions. [2023-08-25 07:21:08,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1463 transitions. [2023-08-25 07:21:08,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:21:08,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1463 transitions. [2023-08-25 07:21:08,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 292.6) internal successors, (1463), 5 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states 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 07:21:08,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 616.0) internal successors, (3696), 6 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 07:21:08,728 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 616.0) internal successors, (3696), 6 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 07:21:08,728 INFO L175 Difference]: Start difference. First operand has 112 places, 113 transitions, 882 flow. Second operand 5 states and 1463 transitions. [2023-08-25 07:21:08,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 169 transitions, 1466 flow [2023-08-25 07:21:08,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 169 transitions, 1411 flow, removed 23 selfloop flow, removed 2 redundant places. [2023-08-25 07:21:08,759 INFO L231 Difference]: Finished difference. Result has 115 places, 118 transitions, 958 flow [2023-08-25 07:21:08,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=958, PETRI_PLACES=115, PETRI_TRANSITIONS=118} [2023-08-25 07:21:08,760 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 22 predicate places. [2023-08-25 07:21:08,760 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 118 transitions, 958 flow [2023-08-25 07:21:08,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.4) internal successors, (1392), 5 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states 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 07:21:08,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:21:08,761 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:21:08,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-25 07:21:08,761 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:21:08,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:21:08,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1717725893, now seen corresponding path program 7 times [2023-08-25 07:21:08,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:21:08,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617171659] [2023-08-25 07:21:08,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:21:08,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:21:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:21:08,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:21:08,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:21:08,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617171659] [2023-08-25 07:21:08,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617171659] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:21:08,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477949143] [2023-08-25 07:21:08,932 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 07:21:08,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:21:08,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:21:08,937 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 07:21:08,940 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 07:21:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:21:09,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 07:21:09,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:21:09,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:21:09,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:21:09,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:21:09,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477949143] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:21:09,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:21:09,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2023-08-25 07:21:09,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888955335] [2023-08-25 07:21:09,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:21:09,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 07:21:09,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:21:09,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 07:21:09,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-25 07:21:09,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 616 [2023-08-25 07:21:09,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 118 transitions, 958 flow. Second operand has 9 states, 9 states have (on average 278.44444444444446) internal successors, (2506), 9 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states 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 07:21:09,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:21:09,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 616 [2023-08-25 07:21:09,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:21:10,175 INFO L124 PetriNetUnfolderBase]: 2908/6188 cut-off events. [2023-08-25 07:21:10,175 INFO L125 PetriNetUnfolderBase]: For 15107/15205 co-relation queries the response was YES. [2023-08-25 07:21:10,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17259 conditions, 6188 events. 2908/6188 cut-off events. For 15107/15205 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 43541 event pairs, 822 based on Foata normal form. 62/6175 useless extension candidates. Maximal degree in co-relation 17229. Up to 1670 conditions per place. [2023-08-25 07:21:10,230 INFO L140 encePairwiseOnDemand]: 605/616 looper letters, 149 selfloop transitions, 43 changer transitions 6/218 dead transitions. [2023-08-25 07:21:10,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 218 transitions, 1802 flow [2023-08-25 07:21:10,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 07:21:10,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 07:21:10,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2605 transitions. [2023-08-25 07:21:10,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4698773448773449 [2023-08-25 07:21:10,236 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2605 transitions. [2023-08-25 07:21:10,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2605 transitions. [2023-08-25 07:21:10,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:21:10,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2605 transitions. [2023-08-25 07:21:10,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 289.44444444444446) internal successors, (2605), 9 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states 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 07:21:10,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 616.0) internal successors, (6160), 10 states have internal predecessors, (6160), 0 states have call successors, (0), 0 states 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 07:21:10,247 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 616.0) internal successors, (6160), 10 states have internal predecessors, (6160), 0 states have call successors, (0), 0 states 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 07:21:10,247 INFO L175 Difference]: Start difference. First operand has 115 places, 118 transitions, 958 flow. Second operand 9 states and 2605 transitions. [2023-08-25 07:21:10,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 218 transitions, 1802 flow [2023-08-25 07:21:10,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 218 transitions, 1789 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 07:21:10,283 INFO L231 Difference]: Finished difference. Result has 126 places, 125 transitions, 1151 flow [2023-08-25 07:21:10,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1151, PETRI_PLACES=126, PETRI_TRANSITIONS=125} [2023-08-25 07:21:10,284 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 33 predicate places. [2023-08-25 07:21:10,284 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 125 transitions, 1151 flow [2023-08-25 07:21:10,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 278.44444444444446) internal successors, (2506), 9 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states 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 07:21:10,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:21:10,285 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:21:10,293 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 07:21:10,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:21:10,490 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:21:10,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:21:10,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1136105697, now seen corresponding path program 1 times [2023-08-25 07:21:10,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:21:10,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336142581] [2023-08-25 07:21:10,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:21:10,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:21:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:21:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:21:10,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:21:10,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336142581] [2023-08-25 07:21:10,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336142581] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:21:10,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:21:10,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 07:21:10,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978931822] [2023-08-25 07:21:10,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:21:10,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 07:21:10,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:21:10,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 07:21:10,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-25 07:21:10,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 616 [2023-08-25 07:21:10,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 125 transitions, 1151 flow. Second operand has 4 states, 4 states have (on average 285.75) internal successors, (1143), 4 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states 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 07:21:10,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:21:10,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 616 [2023-08-25 07:21:10,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:21:11,377 INFO L124 PetriNetUnfolderBase]: 3333/7085 cut-off events. [2023-08-25 07:21:11,377 INFO L125 PetriNetUnfolderBase]: For 22219/22295 co-relation queries the response was YES. [2023-08-25 07:21:11,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20581 conditions, 7085 events. 3333/7085 cut-off events. For 22219/22295 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 51172 event pairs, 1302 based on Foata normal form. 86/7098 useless extension candidates. Maximal degree in co-relation 20548. Up to 4472 conditions per place. [2023-08-25 07:21:11,418 INFO L140 encePairwiseOnDemand]: 611/616 looper letters, 122 selfloop transitions, 13 changer transitions 3/162 dead transitions. [2023-08-25 07:21:11,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 162 transitions, 1668 flow [2023-08-25 07:21:11,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 07:21:11,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 07:21:11,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1185 transitions. [2023-08-25 07:21:11,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4809253246753247 [2023-08-25 07:21:11,422 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1185 transitions. [2023-08-25 07:21:11,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1185 transitions. [2023-08-25 07:21:11,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:21:11,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1185 transitions. [2023-08-25 07:21:11,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 296.25) internal successors, (1185), 4 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:21:11,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 616.0) internal successors, (3080), 5 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states 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 07:21:11,427 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 616.0) internal successors, (3080), 5 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states 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 07:21:11,427 INFO L175 Difference]: Start difference. First operand has 126 places, 125 transitions, 1151 flow. Second operand 4 states and 1185 transitions. [2023-08-25 07:21:11,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 162 transitions, 1668 flow [2023-08-25 07:21:11,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 162 transitions, 1591 flow, removed 22 selfloop flow, removed 4 redundant places. [2023-08-25 07:21:11,473 INFO L231 Difference]: Finished difference. Result has 126 places, 129 transitions, 1201 flow [2023-08-25 07:21:11,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1201, PETRI_PLACES=126, PETRI_TRANSITIONS=129} [2023-08-25 07:21:11,474 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 33 predicate places. [2023-08-25 07:21:11,474 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 129 transitions, 1201 flow [2023-08-25 07:21:11,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.75) internal successors, (1143), 4 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states 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 07:21:11,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:21:11,475 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:21:11,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-25 07:21:11,475 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:21:11,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:21:11,475 INFO L85 PathProgramCache]: Analyzing trace with hash -2048938724, now seen corresponding path program 1 times [2023-08-25 07:21:11,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:21:11,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930525353] [2023-08-25 07:21:11,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:21:11,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:21:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:21:11,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:21:11,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:21:11,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930525353] [2023-08-25 07:21:11,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930525353] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:21:11,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401302786] [2023-08-25 07:21:11,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:21:11,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:21:11,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:21:11,657 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 07:21:11,684 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 07:21:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:21:11,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-25 07:21:11,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:21:12,117 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-25 07:21:12,120 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:21:12,121 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2023-08-25 07:21:12,185 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:21:12,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:21:12,417 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-25 07:21:12,417 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-08-25 07:21:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:21:12,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401302786] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:21:12,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:21:12,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 22 [2023-08-25 07:21:12,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24539264] [2023-08-25 07:21:12,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:21:12,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 07:21:12,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:21:12,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 07:21:12,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2023-08-25 07:21:12,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 616 [2023-08-25 07:21:12,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 129 transitions, 1201 flow. Second operand has 22 states, 22 states have (on average 209.3181818181818) internal successors, (4605), 22 states have internal predecessors, (4605), 0 states have call successors, (0), 0 states 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 07:21:12,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:21:12,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 616 [2023-08-25 07:21:12,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:21:16,585 INFO L124 PetriNetUnfolderBase]: 15634/26575 cut-off events. [2023-08-25 07:21:16,585 INFO L125 PetriNetUnfolderBase]: For 61532/61810 co-relation queries the response was YES. [2023-08-25 07:21:16,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76266 conditions, 26575 events. 15634/26575 cut-off events. For 61532/61810 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 182296 event pairs, 2650 based on Foata normal form. 464/27010 useless extension candidates. Maximal degree in co-relation 76232. Up to 5684 conditions per place. [2023-08-25 07:21:16,768 INFO L140 encePairwiseOnDemand]: 599/616 looper letters, 490 selfloop transitions, 126 changer transitions 0/630 dead transitions. [2023-08-25 07:21:16,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 630 transitions, 5131 flow [2023-08-25 07:21:16,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-25 07:21:16,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-25 07:21:16,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 5787 transitions. [2023-08-25 07:21:16,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3613261738261738 [2023-08-25 07:21:16,778 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 5787 transitions. [2023-08-25 07:21:16,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 5787 transitions. [2023-08-25 07:21:16,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:21:16,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 5787 transitions. [2023-08-25 07:21:16,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 222.57692307692307) internal successors, (5787), 26 states have internal predecessors, (5787), 0 states have call successors, (0), 0 states 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 07:21:16,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 616.0) internal successors, (16632), 27 states have internal predecessors, (16632), 0 states have call successors, (0), 0 states 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 07:21:16,806 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 616.0) internal successors, (16632), 27 states have internal predecessors, (16632), 0 states have call successors, (0), 0 states 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 07:21:16,806 INFO L175 Difference]: Start difference. First operand has 126 places, 129 transitions, 1201 flow. Second operand 26 states and 5787 transitions. [2023-08-25 07:21:16,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 630 transitions, 5131 flow [2023-08-25 07:21:17,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 630 transitions, 5011 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-25 07:21:17,030 INFO L231 Difference]: Finished difference. Result has 161 places, 222 transitions, 2659 flow [2023-08-25 07:21:17,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2659, PETRI_PLACES=161, PETRI_TRANSITIONS=222} [2023-08-25 07:21:17,031 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 68 predicate places. [2023-08-25 07:21:17,031 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 222 transitions, 2659 flow [2023-08-25 07:21:17,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 209.3181818181818) internal successors, (4605), 22 states have internal predecessors, (4605), 0 states have call successors, (0), 0 states 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 07:21:17,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:21:17,032 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:21:17,042 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 07:21:17,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:21:17,239 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:21:17,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:21:17,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1846587503, now seen corresponding path program 1 times [2023-08-25 07:21:17,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:21:17,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180523550] [2023-08-25 07:21:17,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:21:17,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:21:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:21:17,361 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 07:21:17,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:21:17,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180523550] [2023-08-25 07:21:17,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180523550] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:21:17,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:21:17,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:21:17,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672226394] [2023-08-25 07:21:17,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:21:17,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:21:17,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:21:17,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:21:17,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:21:17,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 616 [2023-08-25 07:21:17,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 222 transitions, 2659 flow. Second operand has 3 states, 3 states have (on average 299.6666666666667) internal successors, (899), 3 states have internal predecessors, (899), 0 states have call successors, (0), 0 states 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 07:21:17,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:21:17,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 616 [2023-08-25 07:21:17,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:21:19,095 INFO L124 PetriNetUnfolderBase]: 6670/14216 cut-off events. [2023-08-25 07:21:19,095 INFO L125 PetriNetUnfolderBase]: For 53902/54205 co-relation queries the response was YES. [2023-08-25 07:21:19,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45905 conditions, 14216 events. 6670/14216 cut-off events. For 53902/54205 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 113967 event pairs, 4531 based on Foata normal form. 482/14542 useless extension candidates. Maximal degree in co-relation 45858. Up to 10478 conditions per place. [2023-08-25 07:21:19,194 INFO L140 encePairwiseOnDemand]: 614/616 looper letters, 183 selfloop transitions, 0 changer transitions 38/257 dead transitions. [2023-08-25 07:21:19,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 257 transitions, 3402 flow [2023-08-25 07:21:19,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:21:19,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:21:19,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 915 transitions. [2023-08-25 07:21:19,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49512987012987014 [2023-08-25 07:21:19,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 915 transitions. [2023-08-25 07:21:19,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 915 transitions. [2023-08-25 07:21:19,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:21:19,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 915 transitions. [2023-08-25 07:21:19,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states 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 07:21:19,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:21:19,199 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:21:19,199 INFO L175 Difference]: Start difference. First operand has 161 places, 222 transitions, 2659 flow. Second operand 3 states and 915 transitions. [2023-08-25 07:21:19,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 257 transitions, 3402 flow [2023-08-25 07:21:19,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 257 transitions, 3263 flow, removed 38 selfloop flow, removed 3 redundant places. [2023-08-25 07:21:19,335 INFO L231 Difference]: Finished difference. Result has 161 places, 219 transitions, 2494 flow [2023-08-25 07:21:19,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=2520, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2494, PETRI_PLACES=161, PETRI_TRANSITIONS=219} [2023-08-25 07:21:19,335 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 68 predicate places. [2023-08-25 07:21:19,335 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 219 transitions, 2494 flow [2023-08-25 07:21:19,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 299.6666666666667) internal successors, (899), 3 states have internal predecessors, (899), 0 states have call successors, (0), 0 states 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 07:21:19,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:21:19,336 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:21:19,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-25 07:21:19,336 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:21:19,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:21:19,336 INFO L85 PathProgramCache]: Analyzing trace with hash -895730737, now seen corresponding path program 2 times [2023-08-25 07:21:19,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:21:19,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262164369] [2023-08-25 07:21:19,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:21:19,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:21:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:21:20,400 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:21:20,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:21:20,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262164369] [2023-08-25 07:21:20,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262164369] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:21:20,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252591240] [2023-08-25 07:21:20,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 07:21:20,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:21:20,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:21:20,402 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:21:20,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 07:21:20,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 07:21:20,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:21:20,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-25 07:21:20,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:21:21,577 INFO L322 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2023-08-25 07:21:21,577 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 19 [2023-08-25 07:21:21,689 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:21:21,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:21:22,544 INFO L322 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2023-08-25 07:21:22,545 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 53 [2023-08-25 07:21:22,897 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:21:22,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252591240] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:21:22,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:21:22,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 15] total 40 [2023-08-25 07:21:22,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428603237] [2023-08-25 07:21:22,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:21:22,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-08-25 07:21:22,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:21:22,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-08-25 07:21:22,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1528, Unknown=0, NotChecked=0, Total=1722 [2023-08-25 07:21:22,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 616 [2023-08-25 07:21:22,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 219 transitions, 2494 flow. Second operand has 42 states, 42 states have (on average 214.42857142857142) internal successors, (9006), 42 states have internal predecessors, (9006), 0 states have call successors, (0), 0 states 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 07:21:22,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:21:22,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 616 [2023-08-25 07:21:22,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:21:32,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 07:21:40,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 07:21:54,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 07:21:55,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 07:22:08,281 INFO L124 PetriNetUnfolderBase]: 49120/85196 cut-off events. [2023-08-25 07:22:08,281 INFO L125 PetriNetUnfolderBase]: For 215559/216830 co-relation queries the response was YES. [2023-08-25 07:22:09,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259442 conditions, 85196 events. 49120/85196 cut-off events. For 215559/216830 co-relation queries the response was YES. Maximal size of possible extension queue 1204. Compared 694097 event pairs, 5840 based on Foata normal form. 1284/86395 useless extension candidates. Maximal degree in co-relation 259393. Up to 18468 conditions per place. [2023-08-25 07:22:09,307 INFO L140 encePairwiseOnDemand]: 597/616 looper letters, 1532 selfloop transitions, 549 changer transitions 209/2316 dead transitions. [2023-08-25 07:22:09,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 2316 transitions, 19185 flow [2023-08-25 07:22:09,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2023-08-25 07:22:09,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2023-08-25 07:22:09,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 29211 transitions. [2023-08-25 07:22:09,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36477272727272725 [2023-08-25 07:22:09,438 INFO L72 ComplementDD]: Start complementDD. Operand 130 states and 29211 transitions. [2023-08-25 07:22:09,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 130 states and 29211 transitions. [2023-08-25 07:22:09,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:22:09,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 130 states and 29211 transitions. [2023-08-25 07:22:09,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 131 states, 130 states have (on average 224.7) internal successors, (29211), 130 states have internal predecessors, (29211), 0 states have call successors, (0), 0 states 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 07:22:09,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 131 states, 131 states have (on average 616.0) internal successors, (80696), 131 states have internal predecessors, (80696), 0 states have call successors, (0), 0 states 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 07:22:09,558 INFO L81 ComplementDD]: Finished complementDD. Result has 131 states, 131 states have (on average 616.0) internal successors, (80696), 131 states have internal predecessors, (80696), 0 states have call successors, (0), 0 states 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 07:22:09,559 INFO L175 Difference]: Start difference. First operand has 161 places, 219 transitions, 2494 flow. Second operand 130 states and 29211 transitions. [2023-08-25 07:22:09,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 2316 transitions, 19185 flow [2023-08-25 07:22:10,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 2316 transitions, 18885 flow, removed 150 selfloop flow, removed 1 redundant places. [2023-08-25 07:22:10,822 INFO L231 Difference]: Finished difference. Result has 362 places, 744 transitions, 9493 flow [2023-08-25 07:22:10,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=2480, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=130, PETRI_FLOW=9493, PETRI_PLACES=362, PETRI_TRANSITIONS=744} [2023-08-25 07:22:10,823 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 269 predicate places. [2023-08-25 07:22:10,823 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 744 transitions, 9493 flow [2023-08-25 07:22:10,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 214.42857142857142) internal successors, (9006), 42 states have internal predecessors, (9006), 0 states have call successors, (0), 0 states 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 07:22:10,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:22:10,824 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:10,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-25 07:22:11,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-25 07:22:11,025 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-25 07:22:11,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:22:11,026 INFO L85 PathProgramCache]: Analyzing trace with hash 532488301, now seen corresponding path program 3 times [2023-08-25 07:22:11,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:22:11,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248158625] [2023-08-25 07:22:11,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:22:11,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:22:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:22:12,501 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:22:12,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:22:12,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248158625] [2023-08-25 07:22:12,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248158625] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:22:12,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891747913] [2023-08-25 07:22:12,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 07:22:12,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:22:12,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:22:12,504 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:22:12,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 07:22:12,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 07:22:12,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:22:12,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-25 07:22:12,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:22:13,241 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-25 07:22:13,241 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2023-08-25 07:22:13,279 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 07:22:13,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:22:13,431 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-25 07:22:13,431 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-08-25 07:22:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 07:22:13,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891747913] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:22:13,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:22:13,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 38 [2023-08-25 07:22:13,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982495667] [2023-08-25 07:22:13,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:22:13,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-25 07:22:13,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:22:13,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-25 07:22:13,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1380, Unknown=0, NotChecked=0, Total=1560 [2023-08-25 07:22:13,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 616 [2023-08-25 07:22:13,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 744 transitions, 9493 flow. Second operand has 40 states, 40 states have (on average 196.3) internal successors, (7852), 40 states have internal predecessors, (7852), 0 states have call successors, (0), 0 states 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 07:22:13,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:22:13,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 616 [2023-08-25 07:22:13,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand