/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs-b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 18:39:48,395 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 18:39:48,444 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 [2023-08-24 18:39:48,448 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 18:39:48,448 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 18:39:48,467 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 18:39:48,468 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 18:39:48,469 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 18:39:48,469 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 18:39:48,469 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 18:39:48,470 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 18:39:48,470 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 18:39:48,471 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 18:39:48,471 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 18:39:48,471 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 18:39:48,472 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 18:39:48,472 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 18:39:48,472 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 18:39:48,473 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 18:39:48,473 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 18:39:48,473 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 18:39:48,474 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 18:39:48,474 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 18:39:48,474 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 18:39:48,475 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 18:39:48,475 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 18:39:48,475 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 18:39:48,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:39:48,476 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 18:39:48,477 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 18:39:48,477 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 18:39:48,477 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 18:39:48,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 18:39:48,478 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 18:39:48,478 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 18:39:48,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-24 18:39:48,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 18:39:48,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 18:39:48,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 18:39:48,853 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 18:39:48,855 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 18:39:48,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs-b.i [2023-08-24 18:39:50,039 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 18:39:50,269 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 18:39:50,270 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/46_monabsex2_vs-b.i [2023-08-24 18:39:50,285 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceb671704/43edff87311f41b2a04d6db3679e3de7/FLAG31323c395 [2023-08-24 18:39:50,301 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceb671704/43edff87311f41b2a04d6db3679e3de7 [2023-08-24 18:39:50,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 18:39:50,305 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 18:39:50,306 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 18:39:50,306 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 18:39:50,308 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 18:39:50,309 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:39:50" (1/1) ... [2023-08-24 18:39:50,309 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d40a0b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:39:50, skipping insertion in model container [2023-08-24 18:39:50,310 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:39:50" (1/1) ... [2023-08-24 18:39:50,349 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 18:39:50,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:39:50,695 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 18:39:50,727 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-24 18:39:50,728 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-24 18:39:50,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:39:50,779 INFO L206 MainTranslator]: Completed translation [2023-08-24 18:39:50,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:39:50 WrapperNode [2023-08-24 18:39:50,782 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 18:39:50,783 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 18:39:50,783 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 18:39:50,783 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 18:39:50,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:39:50" (1/1) ... [2023-08-24 18:39:50,817 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:39:50" (1/1) ... [2023-08-24 18:39:50,836 INFO L138 Inliner]: procedures = 166, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2023-08-24 18:39:50,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 18:39:50,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 18:39:50,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 18:39:50,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 18:39:50,845 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:39:50" (1/1) ... [2023-08-24 18:39:50,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:39:50" (1/1) ... [2023-08-24 18:39:50,849 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:39:50" (1/1) ... [2023-08-24 18:39:50,849 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:39:50" (1/1) ... [2023-08-24 18:39:50,863 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:39:50" (1/1) ... [2023-08-24 18:39:50,866 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:39:50" (1/1) ... [2023-08-24 18:39:50,867 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:39:50" (1/1) ... [2023-08-24 18:39:50,868 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:39:50" (1/1) ... [2023-08-24 18:39:50,869 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 18:39:50,870 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 18:39:50,870 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 18:39:50,870 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 18:39:50,871 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:39:50" (1/1) ... [2023-08-24 18:39:50,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:39:50,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:39:50,914 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) [2023-08-24 18:39:50,940 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 [2023-08-24 18:39:50,955 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-24 18:39:50,955 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-24 18:39:50,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 18:39:50,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 18:39:50,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 18:39:50,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 18:39:50,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 18:39:50,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 18:39:50,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 18:39:50,957 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 18:39:51,090 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 18:39:51,092 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 18:39:51,245 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 18:39:51,252 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 18:39:51,252 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-24 18:39:51,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:39:51 BoogieIcfgContainer [2023-08-24 18:39:51,254 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 18:39:51,257 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 18:39:51,258 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 18:39:51,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 18:39:51,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:39:50" (1/3) ... [2023-08-24 18:39:51,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b31fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:39:51, skipping insertion in model container [2023-08-24 18:39:51,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:39:50" (2/3) ... [2023-08-24 18:39:51,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b31fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:39:51, skipping insertion in model container [2023-08-24 18:39:51,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:39:51" (3/3) ... [2023-08-24 18:39:51,264 INFO L112 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs-b.i [2023-08-24 18:39:51,281 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 18:39:51,281 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-24 18:39:51,281 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 18:39:51,354 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:39:51,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 65 transitions, 135 flow [2023-08-24 18:39:51,431 INFO L124 PetriNetUnfolderBase]: 5/75 cut-off events. [2023-08-24 18:39:51,432 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:39:51,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 75 events. 5/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2023-08-24 18:39:51,437 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 65 transitions, 135 flow [2023-08-24 18:39:51,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 65 transitions, 135 flow [2023-08-24 18:39:51,444 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:39:51,456 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 65 transitions, 135 flow [2023-08-24 18:39:51,458 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 65 transitions, 135 flow [2023-08-24 18:39:51,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 65 transitions, 135 flow [2023-08-24 18:39:51,473 INFO L124 PetriNetUnfolderBase]: 5/75 cut-off events. [2023-08-24 18:39:51,474 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:39:51,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 75 events. 5/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2023-08-24 18:39:51,475 INFO L119 LiptonReduction]: Number of co-enabled transitions 1014 [2023-08-24 18:39:53,542 INFO L134 LiptonReduction]: Checked pairs total: 835 [2023-08-24 18:39:53,542 INFO L136 LiptonReduction]: Total number of compositions: 75 [2023-08-24 18:39:53,556 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:39:53,561 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;@4ab4e709, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:39:53,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-24 18:39:53,564 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:39:53,564 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-24 18:39:53,564 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:39:53,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:39:53,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:39:53,566 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-24 18:39:53,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:39:53,570 INFO L85 PathProgramCache]: Analyzing trace with hash 8867568, now seen corresponding path program 1 times [2023-08-24 18:39:53,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:39:53,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133969740] [2023-08-24 18:39:53,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:39:53,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:39:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:39:53,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:39:53,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:39:53,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133969740] [2023-08-24 18:39:53,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133969740] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:39:53,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:39:53,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:39:53,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561202749] [2023-08-24 18:39:53,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:39:53,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:39:53,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:39:53,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:39:53,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:39:53,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 140 [2023-08-24 18:39:53,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 13 transitions, 31 flow. Second operand has 2 states, 2 states have (on average 61.0) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:53,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:39:53,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 140 [2023-08-24 18:39:53,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:39:53,769 INFO L124 PetriNetUnfolderBase]: 4/18 cut-off events. [2023-08-24 18:39:53,769 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:39:53,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 18 events. 4/18 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 31 event pairs, 4 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 24. Up to 16 conditions per place. [2023-08-24 18:39:53,771 INFO L140 encePairwiseOnDemand]: 134/140 looper letters, 6 selfloop transitions, 0 changer transitions 0/7 dead transitions. [2023-08-24 18:39:53,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 7 transitions, 31 flow [2023-08-24 18:39:53,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:39:53,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:39:53,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 130 transitions. [2023-08-24 18:39:53,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2023-08-24 18:39:53,809 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 130 transitions. [2023-08-24 18:39:53,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 130 transitions. [2023-08-24 18:39:53,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:39:53,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 130 transitions. [2023-08-24 18:39:53,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 65.0) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:53,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:53,818 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:53,820 INFO L175 Difference]: Start difference. First operand has 16 places, 13 transitions, 31 flow. Second operand 2 states and 130 transitions. [2023-08-24 18:39:53,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 7 transitions, 31 flow [2023-08-24 18:39:53,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 7 transitions, 31 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:39:53,823 INFO L231 Difference]: Finished difference. Result has 11 places, 7 transitions, 19 flow [2023-08-24 18:39:53,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=19, PETRI_PLACES=11, PETRI_TRANSITIONS=7} [2023-08-24 18:39:53,827 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, -5 predicate places. [2023-08-24 18:39:53,827 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 7 transitions, 19 flow [2023-08-24 18:39:53,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 61.0) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:53,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:39:53,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:39:53,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 18:39:53,828 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-24 18:39:53,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:39:53,828 INFO L85 PathProgramCache]: Analyzing trace with hash 8867596, now seen corresponding path program 1 times [2023-08-24 18:39:53,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:39:53,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571182756] [2023-08-24 18:39:53,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:39:53,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:39:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:39:53,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:39:53,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:39:53,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571182756] [2023-08-24 18:39:53,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571182756] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:39:53,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:39:53,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:39:53,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702498322] [2023-08-24 18:39:53,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:39:53,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:39:53,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:39:53,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:39:53,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:39:53,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 140 [2023-08-24 18:39:53,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 7 transitions, 19 flow. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:53,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:39:53,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 140 [2023-08-24 18:39:53,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:39:53,988 INFO L124 PetriNetUnfolderBase]: 2/11 cut-off events. [2023-08-24 18:39:53,988 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:39:53,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 11 events. 2/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 24. Up to 6 conditions per place. [2023-08-24 18:39:53,989 INFO L140 encePairwiseOnDemand]: 137/140 looper letters, 5 selfloop transitions, 2 changer transitions 0/8 dead transitions. [2023-08-24 18:39:53,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 8 transitions, 35 flow [2023-08-24 18:39:53,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:39:53,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:39:53,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2023-08-24 18:39:53,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2023-08-24 18:39:53,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 176 transitions. [2023-08-24 18:39:53,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 176 transitions. [2023-08-24 18:39:53,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:39:53,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 176 transitions. [2023-08-24 18:39:53,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:53,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:53,995 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:53,995 INFO L175 Difference]: Start difference. First operand has 11 places, 7 transitions, 19 flow. Second operand 3 states and 176 transitions. [2023-08-24 18:39:53,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 8 transitions, 35 flow [2023-08-24 18:39:53,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 8 transitions, 35 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:39:53,996 INFO L231 Difference]: Finished difference. Result has 12 places, 6 transitions, 21 flow [2023-08-24 18:39:53,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=21, PETRI_PLACES=12, PETRI_TRANSITIONS=6} [2023-08-24 18:39:53,997 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, -4 predicate places. [2023-08-24 18:39:53,997 INFO L495 AbstractCegarLoop]: Abstraction has has 12 places, 6 transitions, 21 flow [2023-08-24 18:39:53,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:53,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:39:53,997 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-24 18:39:53,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 18:39:53,998 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-24 18:39:53,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:39:53,999 INFO L85 PathProgramCache]: Analyzing trace with hash -68212651, now seen corresponding path program 1 times [2023-08-24 18:39:54,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:39:54,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758637783] [2023-08-24 18:39:54,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:39:54,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:39:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:39:54,022 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 18:39:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:39:54,043 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 18:39:54,043 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 18:39:54,044 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-08-24 18:39:54,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-08-24 18:39:54,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2023-08-24 18:39:54,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2023-08-24 18:39:54,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (8 of 13 remaining) [2023-08-24 18:39:54,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-08-24 18:39:54,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-08-24 18:39:54,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-08-24 18:39:54,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-08-24 18:39:54,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-08-24 18:39:54,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (2 of 13 remaining) [2023-08-24 18:39:54,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-08-24 18:39:54,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-08-24 18:39:54,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 18:39:54,048 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-24 18:39:54,050 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 18:39:54,050 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-24 18:39:54,066 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:39:54,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 105 transitions, 222 flow [2023-08-24 18:39:54,096 INFO L124 PetriNetUnfolderBase]: 9/127 cut-off events. [2023-08-24 18:39:54,096 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 18:39:54,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 127 events. 9/127 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 316 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 90. Up to 6 conditions per place. [2023-08-24 18:39:54,098 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 105 transitions, 222 flow [2023-08-24 18:39:54,099 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 105 transitions, 222 flow [2023-08-24 18:39:54,099 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:39:54,099 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 105 transitions, 222 flow [2023-08-24 18:39:54,100 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 105 transitions, 222 flow [2023-08-24 18:39:54,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 105 transitions, 222 flow [2023-08-24 18:39:54,126 INFO L124 PetriNetUnfolderBase]: 9/127 cut-off events. [2023-08-24 18:39:54,126 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 18:39:54,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 127 events. 9/127 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 316 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 90. Up to 6 conditions per place. [2023-08-24 18:39:54,131 INFO L119 LiptonReduction]: Number of co-enabled transitions 5148 [2023-08-24 18:39:54,999 INFO L134 LiptonReduction]: Checked pairs total: 15276 [2023-08-24 18:39:55,000 INFO L136 LiptonReduction]: Total number of compositions: 71 [2023-08-24 18:39:55,002 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:39:55,002 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;@4ab4e709, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:39:55,003 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-24 18:39:55,004 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:39:55,005 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-24 18:39:55,005 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:39:55,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:39:55,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-24 18:39:55,005 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 15 more)] === [2023-08-24 18:39:55,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:39:55,006 INFO L85 PathProgramCache]: Analyzing trace with hash 488980795, now seen corresponding path program 1 times [2023-08-24 18:39:55,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:39:55,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135347747] [2023-08-24 18:39:55,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:39:55,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:39:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:39:55,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:39:55,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:39:55,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135347747] [2023-08-24 18:39:55,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135347747] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:39:55,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:39:55,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:39:55,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222951942] [2023-08-24 18:39:55,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:39:55,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:39:55,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:39:55,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:39:55,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:39:55,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 176 [2023-08-24 18:39:55,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:55,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:39:55,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 176 [2023-08-24 18:39:55,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:39:55,252 INFO L124 PetriNetUnfolderBase]: 608/1316 cut-off events. [2023-08-24 18:39:55,252 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-08-24 18:39:55,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2395 conditions, 1316 events. 608/1316 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 8834 event pairs, 232 based on Foata normal form. 0/1018 useless extension candidates. Maximal degree in co-relation 1864. Up to 680 conditions per place. [2023-08-24 18:39:55,261 INFO L140 encePairwiseOnDemand]: 167/176 looper letters, 48 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2023-08-24 18:39:55,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 273 flow [2023-08-24 18:39:55,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:39:55,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:39:55,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2023-08-24 18:39:55,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5814393939393939 [2023-08-24 18:39:55,264 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2023-08-24 18:39:55,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2023-08-24 18:39:55,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:39:55,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2023-08-24 18:39:55,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:55,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:55,267 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:55,267 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 112 flow. Second operand 3 states and 307 transitions. [2023-08-24 18:39:55,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 273 flow [2023-08-24 18:39:55,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 74 transitions, 271 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-24 18:39:55,269 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 160 flow [2023-08-24 18:39:55,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2023-08-24 18:39:55,270 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2023-08-24 18:39:55,270 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 160 flow [2023-08-24 18:39:55,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:55,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:39:55,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:39:55,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 18:39:55,271 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 15 more)] === [2023-08-24 18:39:55,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:39:55,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1759123711, now seen corresponding path program 1 times [2023-08-24 18:39:55,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:39:55,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377409248] [2023-08-24 18:39:55,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:39:55,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:39:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:39:55,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:39:55,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:39:55,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377409248] [2023-08-24 18:39:55,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377409248] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:39:55,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:39:55,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:39:55,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750488461] [2023-08-24 18:39:55,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:39:55,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:39:55,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:39:55,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:39:55,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:39:55,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 176 [2023-08-24 18:39:55,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:55,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:39:55,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 176 [2023-08-24 18:39:55,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:39:55,425 INFO L124 PetriNetUnfolderBase]: 474/1123 cut-off events. [2023-08-24 18:39:55,428 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2023-08-24 18:39:55,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 1123 events. 474/1123 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7667 event pairs, 370 based on Foata normal form. 0/917 useless extension candidates. Maximal degree in co-relation 1092. Up to 743 conditions per place. [2023-08-24 18:39:55,436 INFO L140 encePairwiseOnDemand]: 173/176 looper letters, 37 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-24 18:39:55,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 67 transitions, 273 flow [2023-08-24 18:39:55,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:39:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:39:55,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2023-08-24 18:39:55,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5643939393939394 [2023-08-24 18:39:55,442 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2023-08-24 18:39:55,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2023-08-24 18:39:55,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:39:55,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2023-08-24 18:39:55,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:55,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:55,447 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:55,447 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 160 flow. Second operand 3 states and 298 transitions. [2023-08-24 18:39:55,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 67 transitions, 273 flow [2023-08-24 18:39:55,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 67 transitions, 259 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 18:39:55,453 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 160 flow [2023-08-24 18:39:55,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2023-08-24 18:39:55,455 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2023-08-24 18:39:55,455 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 160 flow [2023-08-24 18:39:55,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:55,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:39:55,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:39:55,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 18:39:55,456 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 15 more)] === [2023-08-24 18:39:55,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:39:55,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1301800680, now seen corresponding path program 1 times [2023-08-24 18:39:55,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:39:55,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067554216] [2023-08-24 18:39:55,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:39:55,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:39:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:39:55,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:39:55,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:39:55,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067554216] [2023-08-24 18:39:55,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067554216] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:39:55,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:39:55,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:39:55,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337383511] [2023-08-24 18:39:55,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:39:55,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:39:55,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:39:55,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:39:55,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:39:55,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2023-08-24 18:39:55,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:55,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:39:55,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2023-08-24 18:39:55,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:39:55,691 INFO L124 PetriNetUnfolderBase]: 951/1886 cut-off events. [2023-08-24 18:39:55,691 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2023-08-24 18:39:55,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3956 conditions, 1886 events. 951/1886 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 13380 event pairs, 425 based on Foata normal form. 0/1597 useless extension candidates. Maximal degree in co-relation 2134. Up to 872 conditions per place. [2023-08-24 18:39:55,704 INFO L140 encePairwiseOnDemand]: 162/176 looper letters, 56 selfloop transitions, 11 changer transitions 0/85 dead transitions. [2023-08-24 18:39:55,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 85 transitions, 373 flow [2023-08-24 18:39:55,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:39:55,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:39:55,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-24 18:39:55,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2023-08-24 18:39:55,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-24 18:39:55,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-24 18:39:55,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:39:55,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-24 18:39:55,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:55,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:55,709 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:55,709 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 160 flow. Second operand 3 states and 297 transitions. [2023-08-24 18:39:55,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 85 transitions, 373 flow [2023-08-24 18:39:55,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 85 transitions, 369 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 18:39:55,713 INFO L231 Difference]: Finished difference. Result has 60 places, 67 transitions, 258 flow [2023-08-24 18:39:55,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=60, PETRI_TRANSITIONS=67} [2023-08-24 18:39:55,713 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2023-08-24 18:39:55,714 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 67 transitions, 258 flow [2023-08-24 18:39:55,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:55,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:39:55,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:39:55,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 18:39:55,714 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 15 more)] === [2023-08-24 18:39:55,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:39:55,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1194956914, now seen corresponding path program 1 times [2023-08-24 18:39:55,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:39:55,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761982339] [2023-08-24 18:39:55,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:39:55,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:39:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:39:55,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:39:55,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:39:55,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761982339] [2023-08-24 18:39:55,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761982339] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:39:55,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:39:55,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 18:39:55,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671511421] [2023-08-24 18:39:55,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:39:55,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 18:39:55,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:39:55,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 18:39:55,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 18:39:55,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 176 [2023-08-24 18:39:55,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 67 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:55,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:39:55,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 176 [2023-08-24 18:39:55,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:39:55,919 INFO L124 PetriNetUnfolderBase]: 410/972 cut-off events. [2023-08-24 18:39:55,919 INFO L125 PetriNetUnfolderBase]: For 461/489 co-relation queries the response was YES. [2023-08-24 18:39:55,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2271 conditions, 972 events. 410/972 cut-off events. For 461/489 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6464 event pairs, 139 based on Foata normal form. 30/936 useless extension candidates. Maximal degree in co-relation 1092. Up to 446 conditions per place. [2023-08-24 18:39:55,926 INFO L140 encePairwiseOnDemand]: 168/176 looper letters, 53 selfloop transitions, 10 changer transitions 0/91 dead transitions. [2023-08-24 18:39:55,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 91 transitions, 466 flow [2023-08-24 18:39:55,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 18:39:55,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 18:39:55,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 470 transitions. [2023-08-24 18:39:55,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2023-08-24 18:39:55,928 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 470 transitions. [2023-08-24 18:39:55,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 470 transitions. [2023-08-24 18:39:55,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:39:55,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 470 transitions. [2023-08-24 18:39:55,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:55,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:55,931 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:55,931 INFO L175 Difference]: Start difference. First operand has 60 places, 67 transitions, 258 flow. Second operand 5 states and 470 transitions. [2023-08-24 18:39:55,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 91 transitions, 466 flow [2023-08-24 18:39:55,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 91 transitions, 434 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-24 18:39:55,935 INFO L231 Difference]: Finished difference. Result has 63 places, 66 transitions, 269 flow [2023-08-24 18:39:55,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=63, PETRI_TRANSITIONS=66} [2023-08-24 18:39:55,936 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2023-08-24 18:39:55,936 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 66 transitions, 269 flow [2023-08-24 18:39:55,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:55,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:39:55,937 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-24 18:39:55,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 18:39:55,937 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 15 more)] === [2023-08-24 18:39:55,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:39:55,937 INFO L85 PathProgramCache]: Analyzing trace with hash -835073675, now seen corresponding path program 1 times [2023-08-24 18:39:55,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:39:55,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770287754] [2023-08-24 18:39:55,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:39:55,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:39:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:39:55,946 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 18:39:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:39:55,954 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 18:39:55,954 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 18:39:55,955 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-08-24 18:39:55,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-08-24 18:39:55,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-08-24 18:39:55,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-08-24 18:39:55,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (14 of 19 remaining) [2023-08-24 18:39:55,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2023-08-24 18:39:55,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-08-24 18:39:55,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-08-24 18:39:55,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-08-24 18:39:55,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-08-24 18:39:55,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (8 of 19 remaining) [2023-08-24 18:39:55,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2023-08-24 18:39:55,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2023-08-24 18:39:55,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-08-24 18:39:55,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2023-08-24 18:39:55,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-08-24 18:39:55,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (2 of 19 remaining) [2023-08-24 18:39:55,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-08-24 18:39:55,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-08-24 18:39:55,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 18:39:55,957 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-24 18:39:55,958 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 18:39:55,958 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-24 18:39:55,974 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:39:55,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 145 transitions, 311 flow [2023-08-24 18:39:55,996 INFO L124 PetriNetUnfolderBase]: 13/179 cut-off events. [2023-08-24 18:39:55,996 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-24 18:39:55,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 179 events. 13/179 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 536 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 131. Up to 8 conditions per place. [2023-08-24 18:39:55,997 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 145 transitions, 311 flow [2023-08-24 18:39:55,999 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 145 transitions, 311 flow [2023-08-24 18:39:55,999 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:39:55,999 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 145 transitions, 311 flow [2023-08-24 18:39:55,999 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 145 transitions, 311 flow [2023-08-24 18:39:55,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 145 transitions, 311 flow [2023-08-24 18:39:56,017 INFO L124 PetriNetUnfolderBase]: 13/179 cut-off events. [2023-08-24 18:39:56,018 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-24 18:39:56,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 179 events. 13/179 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 536 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 131. Up to 8 conditions per place. [2023-08-24 18:39:56,025 INFO L119 LiptonReduction]: Number of co-enabled transitions 12402 [2023-08-24 18:39:57,048 INFO L134 LiptonReduction]: Checked pairs total: 40030 [2023-08-24 18:39:57,048 INFO L136 LiptonReduction]: Total number of compositions: 95 [2023-08-24 18:39:57,050 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:39:57,051 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;@4ab4e709, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:39:57,051 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-24 18:39:57,052 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:39:57,052 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-24 18:39:57,052 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:39:57,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:39:57,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-24 18:39:57,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-24 18:39:57,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:39:57,053 INFO L85 PathProgramCache]: Analyzing trace with hash 755864196, now seen corresponding path program 1 times [2023-08-24 18:39:57,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:39:57,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556811657] [2023-08-24 18:39:57,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:39:57,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:39:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:39:57,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:39:57,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:39:57,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556811657] [2023-08-24 18:39:57,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556811657] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:39:57,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:39:57,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:39:57,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971958858] [2023-08-24 18:39:57,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:39:57,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:39:57,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:39:57,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:39:57,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:39:57,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 240 [2023-08-24 18:39:57,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:57,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:39:57,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 240 [2023-08-24 18:39:57,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:39:58,989 INFO L124 PetriNetUnfolderBase]: 15060/25586 cut-off events. [2023-08-24 18:39:58,989 INFO L125 PetriNetUnfolderBase]: For 1276/1276 co-relation queries the response was YES. [2023-08-24 18:39:59,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47927 conditions, 25586 events. 15060/25586 cut-off events. For 1276/1276 co-relation queries the response was YES. Maximal size of possible extension queue 1321. Compared 219238 event pairs, 6282 based on Foata normal form. 0/19021 useless extension candidates. Maximal degree in co-relation 28846. Up to 13148 conditions per place. [2023-08-24 18:39:59,227 INFO L140 encePairwiseOnDemand]: 227/240 looper letters, 70 selfloop transitions, 9 changer transitions 0/108 dead transitions. [2023-08-24 18:39:59,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 108 transitions, 407 flow [2023-08-24 18:39:59,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:39:59,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:39:59,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-08-24 18:39:59,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5875 [2023-08-24 18:39:59,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-08-24 18:39:59,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-08-24 18:39:59,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:39:59,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-08-24 18:39:59,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:59,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:59,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:59,232 INFO L175 Difference]: Start difference. First operand has 76 places, 72 transitions, 165 flow. Second operand 3 states and 423 transitions. [2023-08-24 18:39:59,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 108 transitions, 407 flow [2023-08-24 18:39:59,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 108 transitions, 399 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-24 18:39:59,235 INFO L231 Difference]: Finished difference. Result has 79 places, 80 transitions, 235 flow [2023-08-24 18:39:59,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=79, PETRI_TRANSITIONS=80} [2023-08-24 18:39:59,236 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2023-08-24 18:39:59,236 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 235 flow [2023-08-24 18:39:59,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:59,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:39:59,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:39:59,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 18:39:59,237 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-24 18:39:59,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:39:59,237 INFO L85 PathProgramCache]: Analyzing trace with hash 536042364, now seen corresponding path program 1 times [2023-08-24 18:39:59,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:39:59,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542757485] [2023-08-24 18:39:59,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:39:59,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:39:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:39:59,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:39:59,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:39:59,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542757485] [2023-08-24 18:39:59,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542757485] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:39:59,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:39:59,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:39:59,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169093211] [2023-08-24 18:39:59,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:39:59,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:39:59,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:39:59,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:39:59,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:39:59,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 240 [2023-08-24 18:39:59,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:39:59,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:39:59,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 240 [2023-08-24 18:39:59,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:40:00,549 INFO L124 PetriNetUnfolderBase]: 9604/17653 cut-off events. [2023-08-24 18:40:00,550 INFO L125 PetriNetUnfolderBase]: For 3989/4041 co-relation queries the response was YES. [2023-08-24 18:40:00,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35780 conditions, 17653 events. 9604/17653 cut-off events. For 3989/4041 co-relation queries the response was YES. Maximal size of possible extension queue 933. Compared 158193 event pairs, 7442 based on Foata normal form. 1/14533 useless extension candidates. Maximal degree in co-relation 12300. Up to 12397 conditions per place. [2023-08-24 18:40:00,678 INFO L140 encePairwiseOnDemand]: 237/240 looper letters, 61 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2023-08-24 18:40:00,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 105 transitions, 439 flow [2023-08-24 18:40:00,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:40:00,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:40:00,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2023-08-24 18:40:00,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2023-08-24 18:40:00,680 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 425 transitions. [2023-08-24 18:40:00,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 425 transitions. [2023-08-24 18:40:00,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:40:00,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 425 transitions. [2023-08-24 18:40:00,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:00,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:00,685 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:00,685 INFO L175 Difference]: Start difference. First operand has 79 places, 80 transitions, 235 flow. Second operand 3 states and 425 transitions. [2023-08-24 18:40:00,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 105 transitions, 439 flow [2023-08-24 18:40:00,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 105 transitions, 415 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 18:40:00,734 INFO L231 Difference]: Finished difference. Result has 80 places, 81 transitions, 229 flow [2023-08-24 18:40:00,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=80, PETRI_TRANSITIONS=81} [2023-08-24 18:40:00,737 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 4 predicate places. [2023-08-24 18:40:00,737 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 81 transitions, 229 flow [2023-08-24 18:40:00,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:00,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:40:00,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:40:00,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 18:40:00,739 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-24 18:40:00,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:40:00,740 INFO L85 PathProgramCache]: Analyzing trace with hash -562558897, now seen corresponding path program 1 times [2023-08-24 18:40:00,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:40:00,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407604776] [2023-08-24 18:40:00,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:40:00,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:40:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:40:00,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:40:00,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:40:00,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407604776] [2023-08-24 18:40:00,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407604776] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:40:00,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:40:00,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:40:00,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34780219] [2023-08-24 18:40:00,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:40:00,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:40:00,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:40:00,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:40:00,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:40:00,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 240 [2023-08-24 18:40:00,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:00,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:40:00,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 240 [2023-08-24 18:40:00,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:40:04,494 INFO L124 PetriNetUnfolderBase]: 41184/65010 cut-off events. [2023-08-24 18:40:04,495 INFO L125 PetriNetUnfolderBase]: For 10220/10221 co-relation queries the response was YES. [2023-08-24 18:40:04,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136423 conditions, 65010 events. 41184/65010 cut-off events. For 10220/10221 co-relation queries the response was YES. Maximal size of possible extension queue 3783. Compared 583835 event pairs, 17535 based on Foata normal form. 0/53088 useless extension candidates. Maximal degree in co-relation 76169. Up to 29877 conditions per place. [2023-08-24 18:40:04,900 INFO L140 encePairwiseOnDemand]: 219/240 looper letters, 92 selfloop transitions, 16 changer transitions 0/131 dead transitions. [2023-08-24 18:40:04,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 131 transitions, 585 flow [2023-08-24 18:40:04,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:40:04,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:40:04,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 414 transitions. [2023-08-24 18:40:04,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2023-08-24 18:40:04,902 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 414 transitions. [2023-08-24 18:40:04,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 414 transitions. [2023-08-24 18:40:04,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:40:04,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 414 transitions. [2023-08-24 18:40:04,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:04,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:04,905 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:04,905 INFO L175 Difference]: Start difference. First operand has 80 places, 81 transitions, 229 flow. Second operand 3 states and 414 transitions. [2023-08-24 18:40:04,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 131 transitions, 585 flow [2023-08-24 18:40:04,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 131 transitions, 581 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 18:40:04,984 INFO L231 Difference]: Finished difference. Result has 83 places, 97 transitions, 371 flow [2023-08-24 18:40:04,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=371, PETRI_PLACES=83, PETRI_TRANSITIONS=97} [2023-08-24 18:40:04,985 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 7 predicate places. [2023-08-24 18:40:04,985 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 97 transitions, 371 flow [2023-08-24 18:40:04,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:04,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:40:04,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:40:04,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 18:40:04,986 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-24 18:40:04,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:40:04,987 INFO L85 PathProgramCache]: Analyzing trace with hash 546799676, now seen corresponding path program 1 times [2023-08-24 18:40:04,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:40:04,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10364570] [2023-08-24 18:40:04,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:40:04,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:40:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:40:05,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:40:05,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:40:05,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10364570] [2023-08-24 18:40:05,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10364570] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:40:05,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:40:05,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:40:05,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175110080] [2023-08-24 18:40:05,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:40:05,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:40:05,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:40:05,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:40:05,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:40:05,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 240 [2023-08-24 18:40:05,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 97 transitions, 371 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:05,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:40:05,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 240 [2023-08-24 18:40:05,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:40:06,188 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([762] L688-8-->L689: Formula: (and |v_thr1Thread3of3ForFork0_#t~short3#1_In_3| (= |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_In_3| |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_Out_6|) (= |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_Out_6| |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_In_3|) (= |v_#race~s~0_Out_50| 0)) InVars {thr1Thread3of3ForFork0_#t~short3#1=|v_thr1Thread3of3ForFork0_#t~short3#1_In_3|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_In_3|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_In_3|} OutVars{#race~s~0=|v_#race~s~0_Out_50|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_Out_6|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_Out_6|} AuxVars[] AssignedVars[thr1Thread3of3ForFork0_#t~short3#1, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset, #race~s~0][111], [Black: 156#true, 83#L689-1true, 162#true, Black: 145#true, 45#L696-5true, Black: 153#|thr1Thread1of3ForFork0_#t~short3#1|, thr1Thread1of3ForFork0InUse, 127#L689true, 82#thr1EXITtrue, thr1Thread2of3ForFork0InUse, 158#(= |#race~s~0| 0), thr1Thread3of3ForFork0InUse]) [2023-08-24 18:40:06,189 INFO L294 olderBase$Statistics]: this new event has 34 ancestors and is cut-off event [2023-08-24 18:40:06,189 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-24 18:40:06,189 INFO L297 olderBase$Statistics]: existing Event has 31 ancestors and is cut-off event [2023-08-24 18:40:06,189 INFO L297 olderBase$Statistics]: existing Event has 31 ancestors and is cut-off event [2023-08-24 18:40:06,256 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([762] L688-8-->L689: Formula: (and |v_thr1Thread3of3ForFork0_#t~short3#1_In_3| (= |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_In_3| |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_Out_6|) (= |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_Out_6| |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_In_3|) (= |v_#race~s~0_Out_50| 0)) InVars {thr1Thread3of3ForFork0_#t~short3#1=|v_thr1Thread3of3ForFork0_#t~short3#1_In_3|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_In_3|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_In_3|} OutVars{#race~s~0=|v_#race~s~0_Out_50|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_Out_6|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_Out_6|} AuxVars[] AssignedVars[thr1Thread3of3ForFork0_#t~short3#1, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset, #race~s~0][111], [Black: 156#true, 112#thr1EXITtrue, 162#true, Black: 145#true, 58#L689-1true, Black: 153#|thr1Thread1of3ForFork0_#t~short3#1|, 45#L696-5true, thr1Thread1of3ForFork0InUse, 127#L689true, thr1Thread2of3ForFork0InUse, 158#(= |#race~s~0| 0), thr1Thread3of3ForFork0InUse]) [2023-08-24 18:40:06,256 INFO L294 olderBase$Statistics]: this new event has 34 ancestors and is cut-off event [2023-08-24 18:40:06,256 INFO L297 olderBase$Statistics]: existing Event has 31 ancestors and is cut-off event [2023-08-24 18:40:06,256 INFO L297 olderBase$Statistics]: existing Event has 31 ancestors and is cut-off event [2023-08-24 18:40:06,256 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-24 18:40:06,378 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([762] L688-8-->L689: Formula: (and |v_thr1Thread3of3ForFork0_#t~short3#1_In_3| (= |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_In_3| |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_Out_6|) (= |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_Out_6| |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_In_3|) (= |v_#race~s~0_Out_50| 0)) InVars {thr1Thread3of3ForFork0_#t~short3#1=|v_thr1Thread3of3ForFork0_#t~short3#1_In_3|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_In_3|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_In_3|} OutVars{#race~s~0=|v_#race~s~0_Out_50|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_Out_6|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_Out_6|} AuxVars[] AssignedVars[thr1Thread3of3ForFork0_#t~short3#1, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset, #race~s~0][111], [Black: 156#true, 106#L696-4true, 83#L689-1true, 162#true, Black: 145#true, Black: 153#|thr1Thread1of3ForFork0_#t~short3#1|, thr1Thread1of3ForFork0InUse, 82#thr1EXITtrue, 127#L689true, thr1Thread2of3ForFork0InUse, 158#(= |#race~s~0| 0), thr1Thread3of3ForFork0InUse]) [2023-08-24 18:40:06,378 INFO L294 olderBase$Statistics]: this new event has 37 ancestors and is cut-off event [2023-08-24 18:40:06,378 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-24 18:40:06,379 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-24 18:40:06,379 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-08-24 18:40:06,457 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([762] L688-8-->L689: Formula: (and |v_thr1Thread3of3ForFork0_#t~short3#1_In_3| (= |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_In_3| |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_Out_6|) (= |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_Out_6| |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_In_3|) (= |v_#race~s~0_Out_50| 0)) InVars {thr1Thread3of3ForFork0_#t~short3#1=|v_thr1Thread3of3ForFork0_#t~short3#1_In_3|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_In_3|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_In_3|} OutVars{#race~s~0=|v_#race~s~0_Out_50|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_Out_6|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_Out_6|} AuxVars[] AssignedVars[thr1Thread3of3ForFork0_#t~short3#1, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset, #race~s~0][111], [Black: 156#true, 106#L696-4true, 112#thr1EXITtrue, 162#true, Black: 145#true, Black: 153#|thr1Thread1of3ForFork0_#t~short3#1|, 58#L689-1true, thr1Thread1of3ForFork0InUse, 127#L689true, thr1Thread2of3ForFork0InUse, 158#(= |#race~s~0| 0), thr1Thread3of3ForFork0InUse]) [2023-08-24 18:40:06,457 INFO L294 olderBase$Statistics]: this new event has 37 ancestors and is cut-off event [2023-08-24 18:40:06,457 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-08-24 18:40:06,457 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-24 18:40:06,457 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-24 18:40:06,781 INFO L124 PetriNetUnfolderBase]: 14259/26087 cut-off events. [2023-08-24 18:40:06,781 INFO L125 PetriNetUnfolderBase]: For 13249/13761 co-relation queries the response was YES. [2023-08-24 18:40:06,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61285 conditions, 26087 events. 14259/26087 cut-off events. For 13249/13761 co-relation queries the response was YES. Maximal size of possible extension queue 1540. Compared 246799 event pairs, 4436 based on Foata normal form. 210/24171 useless extension candidates. Maximal degree in co-relation 40922. Up to 16474 conditions per place. [2023-08-24 18:40:06,945 INFO L140 encePairwiseOnDemand]: 233/240 looper letters, 71 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2023-08-24 18:40:06,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 127 transitions, 639 flow [2023-08-24 18:40:06,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:40:06,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:40:06,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 430 transitions. [2023-08-24 18:40:06,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2023-08-24 18:40:06,947 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 430 transitions. [2023-08-24 18:40:06,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 430 transitions. [2023-08-24 18:40:06,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:40:06,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 430 transitions. [2023-08-24 18:40:06,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:06,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:06,950 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:06,950 INFO L175 Difference]: Start difference. First operand has 83 places, 97 transitions, 371 flow. Second operand 3 states and 430 transitions. [2023-08-24 18:40:06,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 127 transitions, 639 flow [2023-08-24 18:40:06,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 127 transitions, 597 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 18:40:06,983 INFO L231 Difference]: Finished difference. Result has 84 places, 100 transitions, 369 flow [2023-08-24 18:40:06,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=369, PETRI_PLACES=84, PETRI_TRANSITIONS=100} [2023-08-24 18:40:06,983 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 8 predicate places. [2023-08-24 18:40:06,983 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 100 transitions, 369 flow [2023-08-24 18:40:06,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:06,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:40:06,984 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:40:06,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 18:40:06,984 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-24 18:40:06,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:40:06,984 INFO L85 PathProgramCache]: Analyzing trace with hash 566205355, now seen corresponding path program 1 times [2023-08-24 18:40:06,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:40:06,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104175623] [2023-08-24 18:40:06,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:40:06,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:40:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:40:07,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 18:40:07,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:40:07,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104175623] [2023-08-24 18:40:07,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104175623] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:40:07,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:40:07,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:40:07,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753135294] [2023-08-24 18:40:07,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:40:07,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:40:07,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:40:07,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:40:07,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:40:07,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 240 [2023-08-24 18:40:07,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 100 transitions, 369 flow. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:07,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:40:07,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 240 [2023-08-24 18:40:07,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:40:08,700 INFO L124 PetriNetUnfolderBase]: 13500/24596 cut-off events. [2023-08-24 18:40:08,700 INFO L125 PetriNetUnfolderBase]: For 9381/9870 co-relation queries the response was YES. [2023-08-24 18:40:08,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57946 conditions, 24596 events. 13500/24596 cut-off events. For 9381/9870 co-relation queries the response was YES. Maximal size of possible extension queue 1464. Compared 232730 event pairs, 8876 based on Foata normal form. 475/23502 useless extension candidates. Maximal degree in co-relation 36475. Up to 17597 conditions per place. [2023-08-24 18:40:08,859 INFO L140 encePairwiseOnDemand]: 237/240 looper letters, 76 selfloop transitions, 3 changer transitions 0/132 dead transitions. [2023-08-24 18:40:08,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 132 transitions, 654 flow [2023-08-24 18:40:08,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:40:08,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:40:08,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-08-24 18:40:08,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2023-08-24 18:40:08,862 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-08-24 18:40:08,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-08-24 18:40:08,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:40:08,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-08-24 18:40:08,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:08,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:08,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:08,865 INFO L175 Difference]: Start difference. First operand has 84 places, 100 transitions, 369 flow. Second operand 3 states and 424 transitions. [2023-08-24 18:40:08,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 132 transitions, 654 flow [2023-08-24 18:40:08,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 132 transitions, 648 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 18:40:08,884 INFO L231 Difference]: Finished difference. Result has 86 places, 102 transitions, 388 flow [2023-08-24 18:40:08,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=388, PETRI_PLACES=86, PETRI_TRANSITIONS=102} [2023-08-24 18:40:08,884 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 10 predicate places. [2023-08-24 18:40:08,884 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 102 transitions, 388 flow [2023-08-24 18:40:08,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:08,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:40:08,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:40:08,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 18:40:08,885 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-24 18:40:08,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:40:08,886 INFO L85 PathProgramCache]: Analyzing trace with hash -105112031, now seen corresponding path program 1 times [2023-08-24 18:40:08,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:40:08,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919526270] [2023-08-24 18:40:08,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:40:08,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:40:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:40:08,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:40:08,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:40:08,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919526270] [2023-08-24 18:40:08,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919526270] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:40:08,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:40:08,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:40:08,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735905813] [2023-08-24 18:40:08,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:40:08,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:40:08,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:40:08,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:40:08,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:40:08,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 240 [2023-08-24 18:40:08,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 102 transitions, 388 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:08,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:40:08,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 240 [2023-08-24 18:40:08,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:40:11,755 INFO L124 PetriNetUnfolderBase]: 26993/43366 cut-off events. [2023-08-24 18:40:11,755 INFO L125 PetriNetUnfolderBase]: For 18912/18981 co-relation queries the response was YES. [2023-08-24 18:40:11,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108131 conditions, 43366 events. 26993/43366 cut-off events. For 18912/18981 co-relation queries the response was YES. Maximal size of possible extension queue 2335. Compared 376895 event pairs, 17392 based on Foata normal form. 0/39532 useless extension candidates. Maximal degree in co-relation 72640. Up to 34606 conditions per place. [2023-08-24 18:40:12,026 INFO L140 encePairwiseOnDemand]: 230/240 looper letters, 112 selfloop transitions, 17 changer transitions 0/153 dead transitions. [2023-08-24 18:40:12,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 153 transitions, 845 flow [2023-08-24 18:40:12,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:40:12,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:40:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2023-08-24 18:40:12,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2023-08-24 18:40:12,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 395 transitions. [2023-08-24 18:40:12,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 395 transitions. [2023-08-24 18:40:12,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:40:12,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 395 transitions. [2023-08-24 18:40:12,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:12,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:12,031 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:12,031 INFO L175 Difference]: Start difference. First operand has 86 places, 102 transitions, 388 flow. Second operand 3 states and 395 transitions. [2023-08-24 18:40:12,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 153 transitions, 845 flow [2023-08-24 18:40:12,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 153 transitions, 839 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 18:40:12,087 INFO L231 Difference]: Finished difference. Result has 89 places, 117 transitions, 551 flow [2023-08-24 18:40:12,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=551, PETRI_PLACES=89, PETRI_TRANSITIONS=117} [2023-08-24 18:40:12,088 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 13 predicate places. [2023-08-24 18:40:12,088 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 117 transitions, 551 flow [2023-08-24 18:40:12,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:12,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:40:12,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:40:12,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-24 18:40:12,089 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-24 18:40:12,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:40:12,089 INFO L85 PathProgramCache]: Analyzing trace with hash -360652199, now seen corresponding path program 1 times [2023-08-24 18:40:12,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:40:12,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621810861] [2023-08-24 18:40:12,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:40:12,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:40:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:40:12,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:40:12,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:40:12,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621810861] [2023-08-24 18:40:12,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621810861] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:40:12,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:40:12,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:40:12,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449179461] [2023-08-24 18:40:12,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:40:12,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:40:12,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:40:12,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:40:12,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:40:12,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 240 [2023-08-24 18:40:12,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 117 transitions, 551 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:12,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:40:12,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 240 [2023-08-24 18:40:12,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:40:13,480 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([762] L688-8-->L689: Formula: (and |v_thr1Thread3of3ForFork0_#t~short3#1_In_3| (= |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_In_3| |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_Out_6|) (= |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_Out_6| |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_In_3|) (= |v_#race~s~0_Out_50| 0)) InVars {thr1Thread3of3ForFork0_#t~short3#1=|v_thr1Thread3of3ForFork0_#t~short3#1_In_3|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_In_3|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_In_3|} OutVars{#race~s~0=|v_#race~s~0_Out_50|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_Out_6|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_Out_6|} AuxVars[] AssignedVars[thr1Thread3of3ForFork0_#t~short3#1, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset, #race~s~0][127], [Black: 156#true, 172#true, Black: 164#(and (<= ~l~0 (* 256 (div ~l~0 256))) (< 0 (+ (div ~l~0 256) 1))), 14#L690-3true, Black: 169#|thr1Thread2of3ForFork0_#t~short3#1|, thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, Black: 174#(= |#race~s~0| |thr1Thread1of3ForFork0_#t~nondet4#1|), Black: 147#(= |#race~l~0| 0), 180#(= |#race~l~0| |thr1Thread1of3ForFork0_#t~nondet5#1|), Black: 153#|thr1Thread1of3ForFork0_#t~short3#1|, 58#L689-1true, 45#L696-5true, 127#L689true]) [2023-08-24 18:40:13,481 INFO L294 olderBase$Statistics]: this new event has 33 ancestors and is cut-off event [2023-08-24 18:40:13,481 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-24 18:40:13,481 INFO L297 olderBase$Statistics]: existing Event has 30 ancestors and is cut-off event [2023-08-24 18:40:13,481 INFO L297 olderBase$Statistics]: existing Event has 30 ancestors and is cut-off event [2023-08-24 18:40:13,853 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([762] L688-8-->L689: Formula: (and |v_thr1Thread3of3ForFork0_#t~short3#1_In_3| (= |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_In_3| |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_Out_6|) (= |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_Out_6| |v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_In_3|) (= |v_#race~s~0_Out_50| 0)) InVars {thr1Thread3of3ForFork0_#t~short3#1=|v_thr1Thread3of3ForFork0_#t~short3#1_In_3|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_In_3|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_In_3|} OutVars{#race~s~0=|v_#race~s~0_Out_50|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base_Out_6|, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset=|v_thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset_Out_6|} AuxVars[] AssignedVars[thr1Thread3of3ForFork0_#t~short3#1, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.base, thr1Thread3of3ForFork0_reach_error_#t~nondet0#1.offset, #race~s~0][127], [Black: 156#true, 172#true, Black: 164#(and (<= ~l~0 (* 256 (div ~l~0 256))) (< 0 (+ (div ~l~0 256) 1))), 14#L690-3true, thr1Thread1of3ForFork0InUse, Black: 169#|thr1Thread2of3ForFork0_#t~short3#1|, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, Black: 174#(= |#race~s~0| |thr1Thread1of3ForFork0_#t~nondet4#1|), 106#L696-4true, Black: 147#(= |#race~l~0| 0), 180#(= |#race~l~0| |thr1Thread1of3ForFork0_#t~nondet5#1|), Black: 153#|thr1Thread1of3ForFork0_#t~short3#1|, 58#L689-1true, 127#L689true]) [2023-08-24 18:40:13,853 INFO L294 olderBase$Statistics]: this new event has 36 ancestors and is cut-off event [2023-08-24 18:40:13,853 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-24 18:40:13,853 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-24 18:40:13,853 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-08-24 18:40:14,828 INFO L124 PetriNetUnfolderBase]: 26376/43154 cut-off events. [2023-08-24 18:40:14,829 INFO L125 PetriNetUnfolderBase]: For 42400/44658 co-relation queries the response was YES. [2023-08-24 18:40:15,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117640 conditions, 43154 events. 26376/43154 cut-off events. For 42400/44658 co-relation queries the response was YES. Maximal size of possible extension queue 2298. Compared 384913 event pairs, 15337 based on Foata normal form. 412/37324 useless extension candidates. Maximal degree in co-relation 75288. Up to 33364 conditions per place. [2023-08-24 18:40:15,342 INFO L140 encePairwiseOnDemand]: 233/240 looper letters, 101 selfloop transitions, 11 changer transitions 0/157 dead transitions. [2023-08-24 18:40:15,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 157 transitions, 943 flow [2023-08-24 18:40:15,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:40:15,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:40:15,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 405 transitions. [2023-08-24 18:40:15,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2023-08-24 18:40:15,344 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 405 transitions. [2023-08-24 18:40:15,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 405 transitions. [2023-08-24 18:40:15,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:40:15,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 405 transitions. [2023-08-24 18:40:15,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:15,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:15,348 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:15,348 INFO L175 Difference]: Start difference. First operand has 89 places, 117 transitions, 551 flow. Second operand 3 states and 405 transitions. [2023-08-24 18:40:15,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 157 transitions, 943 flow [2023-08-24 18:40:15,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 157 transitions, 909 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 18:40:15,564 INFO L231 Difference]: Finished difference. Result has 90 places, 126 transitions, 604 flow [2023-08-24 18:40:15,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=604, PETRI_PLACES=90, PETRI_TRANSITIONS=126} [2023-08-24 18:40:15,564 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 14 predicate places. [2023-08-24 18:40:15,565 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 126 transitions, 604 flow [2023-08-24 18:40:15,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:15,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:40:15,565 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-24 18:40:15,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-24 18:40:15,565 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-24 18:40:15,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:40:15,566 INFO L85 PathProgramCache]: Analyzing trace with hash -844468408, now seen corresponding path program 1 times [2023-08-24 18:40:15,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:40:15,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187619862] [2023-08-24 18:40:15,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:40:15,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:40:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:40:15,577 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 18:40:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:40:15,586 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 18:40:15,587 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 18:40:15,587 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-08-24 18:40:15,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2023-08-24 18:40:15,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2023-08-24 18:40:15,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2023-08-24 18:40:15,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (20 of 25 remaining) [2023-08-24 18:40:15,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2023-08-24 18:40:15,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2023-08-24 18:40:15,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2023-08-24 18:40:15,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2023-08-24 18:40:15,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2023-08-24 18:40:15,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (14 of 25 remaining) [2023-08-24 18:40:15,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2023-08-24 18:40:15,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2023-08-24 18:40:15,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2023-08-24 18:40:15,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2023-08-24 18:40:15,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2023-08-24 18:40:15,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (8 of 25 remaining) [2023-08-24 18:40:15,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2023-08-24 18:40:15,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2023-08-24 18:40:15,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2023-08-24 18:40:15,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2023-08-24 18:40:15,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2023-08-24 18:40:15,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (2 of 25 remaining) [2023-08-24 18:40:15,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2023-08-24 18:40:15,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2023-08-24 18:40:15,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-24 18:40:15,590 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:40:15,591 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 18:40:15,591 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-24 18:40:15,622 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:40:15,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 185 transitions, 402 flow [2023-08-24 18:40:15,656 INFO L124 PetriNetUnfolderBase]: 17/231 cut-off events. [2023-08-24 18:40:15,656 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-24 18:40:15,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 231 events. 17/231 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 767 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 187. Up to 10 conditions per place. [2023-08-24 18:40:15,658 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 185 transitions, 402 flow [2023-08-24 18:40:15,660 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 185 transitions, 402 flow [2023-08-24 18:40:15,660 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:40:15,660 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 185 transitions, 402 flow [2023-08-24 18:40:15,660 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 185 transitions, 402 flow [2023-08-24 18:40:15,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 185 transitions, 402 flow [2023-08-24 18:40:15,685 INFO L124 PetriNetUnfolderBase]: 17/231 cut-off events. [2023-08-24 18:40:15,685 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-24 18:40:15,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 231 events. 17/231 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 767 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 187. Up to 10 conditions per place. [2023-08-24 18:40:15,699 INFO L119 LiptonReduction]: Number of co-enabled transitions 22776 [2023-08-24 18:40:16,877 INFO L134 LiptonReduction]: Checked pairs total: 75487 [2023-08-24 18:40:16,877 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-08-24 18:40:16,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:40:16,879 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;@4ab4e709, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:40:16,880 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-08-24 18:40:16,881 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:40:16,881 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-24 18:40:16,881 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:40:16,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:40:16,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-24 18:40:16,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 27 more)] === [2023-08-24 18:40:16,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:40:16,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1083138087, now seen corresponding path program 1 times [2023-08-24 18:40:16,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:40:16,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689775017] [2023-08-24 18:40:16,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:40:16,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:40:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:40:16,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:40:16,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:40:16,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689775017] [2023-08-24 18:40:16,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689775017] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:40:16,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:40:16,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:40:16,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254341693] [2023-08-24 18:40:16,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:40:16,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:40:16,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:40:16,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:40:16,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:40:16,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 303 [2023-08-24 18:40:16,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 94 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:16,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:40:16,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 303 [2023-08-24 18:40:16,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:40:44,598 INFO L124 PetriNetUnfolderBase]: 323920/483541 cut-off events. [2023-08-24 18:40:44,598 INFO L125 PetriNetUnfolderBase]: For 36421/36421 co-relation queries the response was YES. [2023-08-24 18:40:45,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925349 conditions, 483541 events. 323920/483541 cut-off events. For 36421/36421 co-relation queries the response was YES. Maximal size of possible extension queue 16121. Compared 4687835 event pairs, 140718 based on Foata normal form. 0/377110 useless extension candidates. Maximal degree in co-relation 446712. Up to 247252 conditions per place. [2023-08-24 18:40:47,824 INFO L140 encePairwiseOnDemand]: 286/303 looper letters, 94 selfloop transitions, 12 changer transitions 0/143 dead transitions. [2023-08-24 18:40:47,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 143 transitions, 551 flow [2023-08-24 18:40:47,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:40:47,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:40:47,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2023-08-24 18:40:47,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5951595159515951 [2023-08-24 18:40:47,826 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2023-08-24 18:40:47,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2023-08-24 18:40:47,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:40:47,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2023-08-24 18:40:47,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:47,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:47,830 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:47,830 INFO L175 Difference]: Start difference. First operand has 99 places, 94 transitions, 220 flow. Second operand 3 states and 541 transitions. [2023-08-24 18:40:47,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 143 transitions, 551 flow [2023-08-24 18:40:47,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 143 transitions, 533 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-08-24 18:40:47,847 INFO L231 Difference]: Finished difference. Result has 102 places, 105 transitions, 310 flow [2023-08-24 18:40:47,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=310, PETRI_PLACES=102, PETRI_TRANSITIONS=105} [2023-08-24 18:40:47,847 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 3 predicate places. [2023-08-24 18:40:47,847 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 105 transitions, 310 flow [2023-08-24 18:40:47,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:47,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:40:47,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:40:47,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-24 18:40:47,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 27 more)] === [2023-08-24 18:40:47,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:40:47,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1513649800, now seen corresponding path program 1 times [2023-08-24 18:40:47,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:40:47,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293633235] [2023-08-24 18:40:47,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:40:47,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:40:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:40:47,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:40:47,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:40:47,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293633235] [2023-08-24 18:40:47,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293633235] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:40:47,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:40:47,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:40:47,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380520968] [2023-08-24 18:40:47,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:40:47,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:40:47,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:40:47,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:40:47,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:40:47,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 303 [2023-08-24 18:40:47,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 105 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:40:47,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:40:47,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 303 [2023-08-24 18:40:47,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:41:07,303 INFO L124 PetriNetUnfolderBase]: 191710/308532 cut-off events. [2023-08-24 18:41:07,303 INFO L125 PetriNetUnfolderBase]: For 68283/68404 co-relation queries the response was YES. [2023-08-24 18:41:08,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 636354 conditions, 308532 events. 191710/308532 cut-off events. For 68283/68404 co-relation queries the response was YES. Maximal size of possible extension queue 11651. Compared 3229510 event pairs, 152286 based on Foata normal form. 4/262023 useless extension candidates. Maximal degree in co-relation 176221. Up to 226402 conditions per place. [2023-08-24 18:41:09,676 INFO L140 encePairwiseOnDemand]: 300/303 looper letters, 85 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2023-08-24 18:41:09,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 142 transitions, 603 flow [2023-08-24 18:41:09,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:41:09,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:41:09,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 554 transitions. [2023-08-24 18:41:09,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6094609460946094 [2023-08-24 18:41:09,679 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 554 transitions. [2023-08-24 18:41:09,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 554 transitions. [2023-08-24 18:41:09,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:41:09,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 554 transitions. [2023-08-24 18:41:09,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:41:09,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:41:09,682 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:41:09,682 INFO L175 Difference]: Start difference. First operand has 102 places, 105 transitions, 310 flow. Second operand 3 states and 554 transitions. [2023-08-24 18:41:09,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 142 transitions, 603 flow [2023-08-24 18:41:14,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 142 transitions, 569 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 18:41:14,581 INFO L231 Difference]: Finished difference. Result has 103 places, 106 transitions, 298 flow [2023-08-24 18:41:14,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=103, PETRI_TRANSITIONS=106} [2023-08-24 18:41:14,581 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 4 predicate places. [2023-08-24 18:41:14,581 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 106 transitions, 298 flow [2023-08-24 18:41:14,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:41:14,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:41:14,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:41:14,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-24 18:41:14,582 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 27 more)] === [2023-08-24 18:41:14,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:41:14,582 INFO L85 PathProgramCache]: Analyzing trace with hash -321608688, now seen corresponding path program 1 times [2023-08-24 18:41:14,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:41:14,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938534963] [2023-08-24 18:41:14,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:41:14,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:41:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:41:14,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:41:14,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:41:14,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938534963] [2023-08-24 18:41:14,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938534963] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:41:14,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:41:14,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:41:14,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851684500] [2023-08-24 18:41:14,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:41:14,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:41:14,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:41:14,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:41:14,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:41:14,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 303 [2023-08-24 18:41:14,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 106 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:41:14,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:41:14,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 303 [2023-08-24 18:41:14,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand