/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 --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 07:46:23,520 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 07:46:23,593 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 [2023-08-26 07:46:23,596 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 07:46:23,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 07:46:23,626 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 07:46:23,627 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 07:46:23,627 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 07:46:23,628 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 07:46:23,631 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 07:46:23,631 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 07:46:23,631 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 07:46:23,631 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 07:46:23,632 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 07:46:23,632 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 07:46:23,632 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 07:46:23,633 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 07:46:23,633 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 07:46:23,633 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 07:46:23,633 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 07:46:23,633 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 07:46:23,634 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 07:46:23,634 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 07:46:23,635 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 07:46:23,635 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 07:46:23,635 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 07:46:23,635 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 07:46:23,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:46:23,635 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 07:46:23,635 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 07:46:23,636 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 07:46:23,636 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 07:46:23,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 07:46:23,637 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 07:46:23,637 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 07:46:23,637 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 07:46:23,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 07:46:23,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 07:46:23,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 07:46:23,957 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 07:46:23,957 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 07:46:23,958 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i [2023-08-26 07:46:24,917 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 07:46:25,204 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 07:46:25,205 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i [2023-08-26 07:46:25,226 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69f8d03a3/7ba6f4ddacdd4899bc876b0fc539d2bd/FLAGa0f4dc8e0 [2023-08-26 07:46:25,236 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69f8d03a3/7ba6f4ddacdd4899bc876b0fc539d2bd [2023-08-26 07:46:25,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 07:46:25,239 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 07:46:25,239 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 07:46:25,239 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 07:46:25,243 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 07:46:25,245 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:46:25" (1/1) ... [2023-08-26 07:46:25,245 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73037742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:46:25, skipping insertion in model container [2023-08-26 07:46:25,245 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:46:25" (1/1) ... [2023-08-26 07:46:25,285 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 07:46:25,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:46:25,573 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 07:46:25,593 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 07:46:25,594 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 07:46:25,599 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-26 07:46:25,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:46:25,673 WARN L669 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 07:46:25,678 INFO L206 MainTranslator]: Completed translation [2023-08-26 07:46:25,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:46:25 WrapperNode [2023-08-26 07:46:25,679 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 07:46:25,679 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 07:46:25,680 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 07:46:25,680 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 07:46:25,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:46:25" (1/1) ... [2023-08-26 07:46:25,708 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:46:25" (1/1) ... [2023-08-26 07:46:25,733 INFO L138 Inliner]: procedures = 273, calls = 44, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 190 [2023-08-26 07:46:25,734 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 07:46:25,735 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 07:46:25,735 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 07:46:25,735 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 07:46:25,740 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:46:25" (1/1) ... [2023-08-26 07:46:25,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:46:25" (1/1) ... [2023-08-26 07:46:25,753 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:46:25" (1/1) ... [2023-08-26 07:46:25,753 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:46:25" (1/1) ... [2023-08-26 07:46:25,757 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:46:25" (1/1) ... [2023-08-26 07:46:25,759 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:46:25" (1/1) ... [2023-08-26 07:46:25,761 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:46:25" (1/1) ... [2023-08-26 07:46:25,761 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:46:25" (1/1) ... [2023-08-26 07:46:25,763 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 07:46:25,764 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 07:46:25,764 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 07:46:25,764 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 07:46:25,776 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:46:25" (1/1) ... [2023-08-26 07:46:25,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:46:25,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:46:25,795 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) [2023-08-26 07:46:25,801 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 [2023-08-26 07:46:25,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 07:46:25,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 07:46:25,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 07:46:25,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 07:46:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 07:46:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 07:46:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 07:46:25,821 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 07:46:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 07:46:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 07:46:25,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 07:46:25,822 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 07:46:25,912 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 07:46:25,914 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 07:46:26,181 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 07:46:26,187 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 07:46:26,187 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-26 07:46:26,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:46:26 BoogieIcfgContainer [2023-08-26 07:46:26,188 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 07:46:26,190 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 07:46:26,190 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 07:46:26,191 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 07:46:26,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 07:46:25" (1/3) ... [2023-08-26 07:46:26,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7970e5d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:46:26, skipping insertion in model container [2023-08-26 07:46:26,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:46:25" (2/3) ... [2023-08-26 07:46:26,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7970e5d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:46:26, skipping insertion in model container [2023-08-26 07:46:26,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:46:26" (3/3) ... [2023-08-26 07:46:26,193 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2023-08-26 07:46:26,203 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 07:46:26,203 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-08-26 07:46:26,203 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 07:46:26,257 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 07:46:26,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 200 transitions, 408 flow [2023-08-26 07:46:26,377 INFO L124 PetriNetUnfolderBase]: 26/257 cut-off events. [2023-08-26 07:46:26,378 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:46:26,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 257 events. 26/257 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 895 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 159. Up to 4 conditions per place. [2023-08-26 07:46:26,386 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 200 transitions, 408 flow [2023-08-26 07:46:26,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 200 transitions, 408 flow [2023-08-26 07:46:26,395 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:46:26,407 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 200 transitions, 408 flow [2023-08-26 07:46:26,410 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 200 transitions, 408 flow [2023-08-26 07:46:26,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 200 transitions, 408 flow [2023-08-26 07:46:26,450 INFO L124 PetriNetUnfolderBase]: 26/257 cut-off events. [2023-08-26 07:46:26,450 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:46:26,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 257 events. 26/257 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 895 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 159. Up to 4 conditions per place. [2023-08-26 07:46:26,458 INFO L119 LiptonReduction]: Number of co-enabled transitions 12222 [2023-08-26 07:46:29,104 INFO L134 LiptonReduction]: Checked pairs total: 36254 [2023-08-26 07:46:29,104 INFO L136 LiptonReduction]: Total number of compositions: 138 [2023-08-26 07:46:29,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:46:29,125 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;@217f0df0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:46:29,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-26 07:46:29,131 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:46:29,131 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-26 07:46:29,131 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:46:29,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:29,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 07:46:29,132 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr8ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-26 07:46:29,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:29,135 INFO L85 PathProgramCache]: Analyzing trace with hash 714877066, now seen corresponding path program 1 times [2023-08-26 07:46:29,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:29,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278408553] [2023-08-26 07:46:29,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:29,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:29,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:29,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:29,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278408553] [2023-08-26 07:46:29,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278408553] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:29,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:29,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:46:29,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803250177] [2023-08-26 07:46:29,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:29,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:46:29,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:29,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:46:29,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:46:29,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 338 [2023-08-26 07:46:29,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 91 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:29,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:29,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 338 [2023-08-26 07:46:29,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:29,516 INFO L124 PetriNetUnfolderBase]: 365/989 cut-off events. [2023-08-26 07:46:29,516 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:46:29,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1762 conditions, 989 events. 365/989 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6178 event pairs, 312 based on Foata normal form. 125/942 useless extension candidates. Maximal degree in co-relation 1730. Up to 733 conditions per place. [2023-08-26 07:46:29,520 INFO L140 encePairwiseOnDemand]: 318/338 looper letters, 67 selfloop transitions, 2 changer transitions 2/100 dead transitions. [2023-08-26 07:46:29,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 100 transitions, 350 flow [2023-08-26 07:46:29,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:46:29,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:46:29,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 614 transitions. [2023-08-26 07:46:29,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6055226824457594 [2023-08-26 07:46:29,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 614 transitions. [2023-08-26 07:46:29,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 614 transitions. [2023-08-26 07:46:29,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:29,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 614 transitions. [2023-08-26 07:46:29,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:29,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:29,539 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:29,540 INFO L175 Difference]: Start difference. First operand has 76 places, 91 transitions, 190 flow. Second operand 3 states and 614 transitions. [2023-08-26 07:46:29,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 100 transitions, 350 flow [2023-08-26 07:46:29,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 100 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:46:29,544 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 155 flow [2023-08-26 07:46:29,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2023-08-26 07:46:29,548 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 1 predicate places. [2023-08-26 07:46:29,548 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 155 flow [2023-08-26 07:46:29,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:29,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:29,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 07:46:29,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 07:46:29,549 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr8ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-26 07:46:29,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:29,549 INFO L85 PathProgramCache]: Analyzing trace with hash 678104016, now seen corresponding path program 1 times [2023-08-26 07:46:29,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:29,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437559294] [2023-08-26 07:46:29,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:29,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:29,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:29,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:29,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437559294] [2023-08-26 07:46:29,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437559294] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:29,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:29,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:46:29,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770915032] [2023-08-26 07:46:29,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:29,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:46:29,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:29,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:46:29,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:46:29,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 338 [2023-08-26 07:46:29,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:29,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:29,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 338 [2023-08-26 07:46:29,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:29,752 INFO L124 PetriNetUnfolderBase]: 746/1987 cut-off events. [2023-08-26 07:46:29,753 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2023-08-26 07:46:29,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3628 conditions, 1987 events. 746/1987 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 14827 event pairs, 27 based on Foata normal form. 0/1639 useless extension candidates. Maximal degree in co-relation 3612. Up to 861 conditions per place. [2023-08-26 07:46:29,759 INFO L140 encePairwiseOnDemand]: 334/338 looper letters, 86 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2023-08-26 07:46:29,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 113 transitions, 422 flow [2023-08-26 07:46:29,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:46:29,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:46:29,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 609 transitions. [2023-08-26 07:46:29,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6005917159763313 [2023-08-26 07:46:29,760 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 609 transitions. [2023-08-26 07:46:29,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 609 transitions. [2023-08-26 07:46:29,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:29,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 609 transitions. [2023-08-26 07:46:29,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:29,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:29,764 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:29,764 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 155 flow. Second operand 3 states and 609 transitions. [2023-08-26 07:46:29,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 113 transitions, 422 flow [2023-08-26 07:46:29,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 113 transitions, 416 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:46:29,766 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 173 flow [2023-08-26 07:46:29,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2023-08-26 07:46:29,767 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2023-08-26 07:46:29,767 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 173 flow [2023-08-26 07:46:29,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:29,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:29,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:29,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 07:46:29,768 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr8ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-26 07:46:29,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:29,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1163345838, now seen corresponding path program 1 times [2023-08-26 07:46:29,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:29,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294643516] [2023-08-26 07:46:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:29,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:29,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:29,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294643516] [2023-08-26 07:46:29,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294643516] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:46:29,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110187941] [2023-08-26 07:46:29,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:29,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:46:29,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:46:29,809 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:46:29,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 07:46:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:29,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:46:29,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:46:29,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 07:46:29,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 07:46:29,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110187941] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:29,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 07:46:29,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-26 07:46:29,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315313945] [2023-08-26 07:46:29,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:29,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:46:29,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:29,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:46:29,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 07:46:29,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 338 [2023-08-26 07:46:29,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:29,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:29,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 338 [2023-08-26 07:46:29,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:30,183 INFO L124 PetriNetUnfolderBase]: 742/1947 cut-off events. [2023-08-26 07:46:30,183 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2023-08-26 07:46:30,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3689 conditions, 1947 events. 742/1947 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 14183 event pairs, 617 based on Foata normal form. 0/1630 useless extension candidates. Maximal degree in co-relation 3671. Up to 1460 conditions per place. [2023-08-26 07:46:30,191 INFO L140 encePairwiseOnDemand]: 334/338 looper letters, 75 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2023-08-26 07:46:30,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 103 transitions, 401 flow [2023-08-26 07:46:30,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:46:30,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:46:30,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 588 transitions. [2023-08-26 07:46:30,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5798816568047337 [2023-08-26 07:46:30,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 588 transitions. [2023-08-26 07:46:30,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 588 transitions. [2023-08-26 07:46:30,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:30,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 588 transitions. [2023-08-26 07:46:30,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:30,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:30,197 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:30,197 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 173 flow. Second operand 3 states and 588 transitions. [2023-08-26 07:46:30,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 103 transitions, 401 flow [2023-08-26 07:46:30,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 103 transitions, 391 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:46:30,201 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 191 flow [2023-08-26 07:46:30,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=79, PETRI_TRANSITIONS=75} [2023-08-26 07:46:30,202 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2023-08-26 07:46:30,202 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 191 flow [2023-08-26 07:46:30,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:30,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:30,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:30,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 07:46:30,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:46:30,429 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr8ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-26 07:46:30,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:30,430 INFO L85 PathProgramCache]: Analyzing trace with hash 235929113, now seen corresponding path program 1 times [2023-08-26 07:46:30,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:30,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365023217] [2023-08-26 07:46:30,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:30,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:30,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:30,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:30,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365023217] [2023-08-26 07:46:30,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365023217] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:46:30,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133609690] [2023-08-26 07:46:30,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:30,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:46:30,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:46:30,513 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:46:30,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 07:46:30,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:30,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:46:30,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:46:30,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:30,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:46:30,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:30,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133609690] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:46:30,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:46:30,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:46:30,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218460603] [2023-08-26 07:46:30,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:46:30,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:46:30,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:30,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:46:30,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:46:30,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 338 [2023-08-26 07:46:30,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 191 flow. Second operand has 7 states, 7 states have (on average 173.57142857142858) internal successors, (1215), 7 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:30,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:30,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 338 [2023-08-26 07:46:30,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:30,726 INFO L124 PetriNetUnfolderBase]: 53/180 cut-off events. [2023-08-26 07:46:30,726 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:46:30,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377 conditions, 180 events. 53/180 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 672 event pairs, 0 based on Foata normal form. 26/196 useless extension candidates. Maximal degree in co-relation 370. Up to 104 conditions per place. [2023-08-26 07:46:30,727 INFO L140 encePairwiseOnDemand]: 335/338 looper letters, 43 selfloop transitions, 2 changer transitions 12/79 dead transitions. [2023-08-26 07:46:30,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 79 transitions, 285 flow [2023-08-26 07:46:30,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:46:30,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:46:30,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 742 transitions. [2023-08-26 07:46:30,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488165680473372 [2023-08-26 07:46:30,729 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 742 transitions. [2023-08-26 07:46:30,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 742 transitions. [2023-08-26 07:46:30,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:30,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 742 transitions. [2023-08-26 07:46:30,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 185.5) internal successors, (742), 4 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:30,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:30,733 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:30,733 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 191 flow. Second operand 4 states and 742 transitions. [2023-08-26 07:46:30,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 79 transitions, 285 flow [2023-08-26 07:46:30,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 79 transitions, 277 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-26 07:46:30,734 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 101 flow [2023-08-26 07:46:30,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2023-08-26 07:46:30,735 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -18 predicate places. [2023-08-26 07:46:30,735 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 101 flow [2023-08-26 07:46:30,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.57142857142858) internal successors, (1215), 7 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:30,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:30,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:30,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 07:46:30,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-26 07:46:30,941 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr8ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-26 07:46:30,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:30,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1820227036, now seen corresponding path program 1 times [2023-08-26 07:46:30,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:30,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450278058] [2023-08-26 07:46:30,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:30,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:30,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:30,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:30,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450278058] [2023-08-26 07:46:30,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450278058] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:30,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:30,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:46:30,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579516137] [2023-08-26 07:46:30,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:30,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:46:30,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:30,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:46:30,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:46:30,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 338 [2023-08-26 07:46:30,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:30,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:30,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 338 [2023-08-26 07:46:30,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:31,011 INFO L124 PetriNetUnfolderBase]: 56/167 cut-off events. [2023-08-26 07:46:31,011 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-26 07:46:31,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 167 events. 56/167 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 516 event pairs, 34 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 349. Up to 91 conditions per place. [2023-08-26 07:46:31,012 INFO L140 encePairwiseOnDemand]: 326/338 looper letters, 26 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2023-08-26 07:46:31,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 167 flow [2023-08-26 07:46:31,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:46:31,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:46:31,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2023-08-26 07:46:31,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2023-08-26 07:46:31,013 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2023-08-26 07:46:31,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2023-08-26 07:46:31,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:31,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2023-08-26 07:46:31,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,017 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,017 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 101 flow. Second operand 3 states and 494 transitions. [2023-08-26 07:46:31,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 167 flow [2023-08-26 07:46:31,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 44 transitions, 163 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:46:31,018 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 106 flow [2023-08-26 07:46:31,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-08-26 07:46:31,018 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -27 predicate places. [2023-08-26 07:46:31,019 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 106 flow [2023-08-26 07:46:31,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:31,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:31,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 07:46:31,019 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr8ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-26 07:46:31,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:31,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1872831598, now seen corresponding path program 1 times [2023-08-26 07:46:31,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:31,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528467913] [2023-08-26 07:46:31,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:31,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:31,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:31,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:31,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528467913] [2023-08-26 07:46:31,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528467913] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:31,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:31,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:46:31,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52326386] [2023-08-26 07:46:31,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:31,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:46:31,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:31,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:46:31,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:46:31,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 338 [2023-08-26 07:46:31,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:31,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 338 [2023-08-26 07:46:31,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:31,086 INFO L124 PetriNetUnfolderBase]: 54/162 cut-off events. [2023-08-26 07:46:31,086 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-26 07:46:31,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 162 events. 54/162 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 490 event pairs, 50 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 361. Up to 131 conditions per place. [2023-08-26 07:46:31,087 INFO L140 encePairwiseOnDemand]: 335/338 looper letters, 31 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-08-26 07:46:31,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 175 flow [2023-08-26 07:46:31,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:46:31,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:46:31,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2023-08-26 07:46:31,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2023-08-26 07:46:31,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 481 transitions. [2023-08-26 07:46:31,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 481 transitions. [2023-08-26 07:46:31,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:31,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 481 transitions. [2023-08-26 07:46:31,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,091 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,091 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 106 flow. Second operand 3 states and 481 transitions. [2023-08-26 07:46:31,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 175 flow [2023-08-26 07:46:31,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 43 transitions, 159 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:46:31,093 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 92 flow [2023-08-26 07:46:31,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2023-08-26 07:46:31,093 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -28 predicate places. [2023-08-26 07:46:31,093 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 92 flow [2023-08-26 07:46:31,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:31,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:31,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 07:46:31,094 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr6ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr8ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-26 07:46:31,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:31,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1673120010, now seen corresponding path program 1 times [2023-08-26 07:46:31,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:31,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826246453] [2023-08-26 07:46:31,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:31,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:31,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:31,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826246453] [2023-08-26 07:46:31,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826246453] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:31,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:31,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:46:31,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112166324] [2023-08-26 07:46:31,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:31,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:46:31,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:31,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:46:31,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:46:31,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 338 [2023-08-26 07:46:31,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:31,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 338 [2023-08-26 07:46:31,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:31,160 INFO L124 PetriNetUnfolderBase]: 52/157 cut-off events. [2023-08-26 07:46:31,161 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:46:31,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 157 events. 52/157 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 468 event pairs, 50 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 332. Up to 131 conditions per place. [2023-08-26 07:46:31,161 INFO L140 encePairwiseOnDemand]: 335/338 looper letters, 30 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-26 07:46:31,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 42 transitions, 159 flow [2023-08-26 07:46:31,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:46:31,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:46:31,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2023-08-26 07:46:31,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47337278106508873 [2023-08-26 07:46:31,163 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2023-08-26 07:46:31,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2023-08-26 07:46:31,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:31,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2023-08-26 07:46:31,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,165 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,165 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 92 flow. Second operand 3 states and 480 transitions. [2023-08-26 07:46:31,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 42 transitions, 159 flow [2023-08-26 07:46:31,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 155 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:46:31,166 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 90 flow [2023-08-26 07:46:31,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2023-08-26 07:46:31,167 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -29 predicate places. [2023-08-26 07:46:31,167 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 90 flow [2023-08-26 07:46:31,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:31,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:31,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 07:46:31,167 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr8ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-26 07:46:31,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:31,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1958741906, now seen corresponding path program 1 times [2023-08-26 07:46:31,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:31,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757764309] [2023-08-26 07:46:31,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:31,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:31,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:31,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757764309] [2023-08-26 07:46:31,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757764309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:31,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:31,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:46:31,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821770125] [2023-08-26 07:46:31,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:31,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:46:31,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:31,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:46:31,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:46:31,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 338 [2023-08-26 07:46:31,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:31,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 338 [2023-08-26 07:46:31,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:31,229 INFO L124 PetriNetUnfolderBase]: 50/152 cut-off events. [2023-08-26 07:46:31,229 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 07:46:31,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 152 events. 50/152 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 447 event pairs, 48 based on Foata normal form. 3/148 useless extension candidates. Maximal degree in co-relation 321. Up to 126 conditions per place. [2023-08-26 07:46:31,230 INFO L140 encePairwiseOnDemand]: 336/338 looper letters, 18 selfloop transitions, 0 changer transitions 16/41 dead transitions. [2023-08-26 07:46:31,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 155 flow [2023-08-26 07:46:31,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:46:31,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:46:31,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2023-08-26 07:46:31,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4723865877712032 [2023-08-26 07:46:31,231 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2023-08-26 07:46:31,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2023-08-26 07:46:31,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:31,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2023-08-26 07:46:31,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,234 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,234 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 90 flow. Second operand 3 states and 479 transitions. [2023-08-26 07:46:31,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 155 flow [2023-08-26 07:46:31,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 151 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:46:31,235 INFO L231 Difference]: Finished difference. Result has 46 places, 25 transitions, 56 flow [2023-08-26 07:46:31,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=46, PETRI_TRANSITIONS=25} [2023-08-26 07:46:31,235 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -30 predicate places. [2023-08-26 07:46:31,235 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 25 transitions, 56 flow [2023-08-26 07:46:31,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:31,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:31,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 07:46:31,236 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr8ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr8ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-26 07:46:31,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:31,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1202675362, now seen corresponding path program 1 times [2023-08-26 07:46:31,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:31,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010623204] [2023-08-26 07:46:31,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:31,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:31,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:31,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:31,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010623204] [2023-08-26 07:46:31,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010623204] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:31,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:31,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:46:31,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84086076] [2023-08-26 07:46:31,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:31,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:46:31,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:31,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:46:31,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:46:31,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 338 [2023-08-26 07:46:31,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:31,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 338 [2023-08-26 07:46:31,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:31,283 INFO L124 PetriNetUnfolderBase]: 26/85 cut-off events. [2023-08-26 07:46:31,283 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:46:31,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 85 events. 26/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 137 event pairs, 24 based on Foata normal form. 3/86 useless extension candidates. Maximal degree in co-relation 174. Up to 66 conditions per place. [2023-08-26 07:46:31,284 INFO L140 encePairwiseOnDemand]: 336/338 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2023-08-26 07:46:31,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 97 flow [2023-08-26 07:46:31,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:46:31,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:46:31,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-08-26 07:46:31,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46055226824457596 [2023-08-26 07:46:31,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-08-26 07:46:31,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-08-26 07:46:31,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:31,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-08-26 07:46:31,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,288 INFO L175 Difference]: Start difference. First operand has 46 places, 25 transitions, 56 flow. Second operand 3 states and 467 transitions. [2023-08-26 07:46:31,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 97 flow [2023-08-26 07:46:31,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 97 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:46:31,289 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2023-08-26 07:46:31,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2023-08-26 07:46:31,289 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -44 predicate places. [2023-08-26 07:46:31,289 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2023-08-26 07:46:31,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:31,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (21 of 22 remaining) [2023-08-26 07:46:31,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-08-26 07:46:31,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-26 07:46:31,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr8ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-26 07:46:31,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr8ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-26 07:46:31,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (16 of 22 remaining) [2023-08-26 07:46:31,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-26 07:46:31,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-26 07:46:31,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-26 07:46:31,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-08-26 07:46:31,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-08-26 07:46:31,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-26 07:46:31,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-08-26 07:46:31,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-08-26 07:46:31,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-08-26 07:46:31,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-08-26 07:46:31,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-08-26 07:46:31,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-08-26 07:46:31,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-08-26 07:46:31,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-08-26 07:46:31,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-26 07:46:31,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-26 07:46:31,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 07:46:31,294 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:31,295 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-26 07:46:31,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 200 transitions, 408 flow [2023-08-26 07:46:31,313 INFO L124 PetriNetUnfolderBase]: 26/257 cut-off events. [2023-08-26 07:46:31,313 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:46:31,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 257 events. 26/257 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 895 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 159. Up to 4 conditions per place. [2023-08-26 07:46:31,314 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 200 transitions, 408 flow [2023-08-26 07:46:31,315 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 195 transitions, 395 flow [2023-08-26 07:46:31,315 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:46:31,316 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 195 transitions, 395 flow [2023-08-26 07:46:31,316 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 195 transitions, 395 flow [2023-08-26 07:46:31,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 195 transitions, 395 flow [2023-08-26 07:46:31,330 INFO L124 PetriNetUnfolderBase]: 25/252 cut-off events. [2023-08-26 07:46:31,330 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:46:31,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 252 events. 25/252 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 889 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 159. Up to 4 conditions per place. [2023-08-26 07:46:31,335 INFO L119 LiptonReduction]: Number of co-enabled transitions 12222 [2023-08-26 07:46:34,006 INFO L134 LiptonReduction]: Checked pairs total: 34912 [2023-08-26 07:46:34,006 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-26 07:46:34,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 07:46:34,008 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;@217f0df0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:46:34,008 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 07:46:34,010 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:46:34,010 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2023-08-26 07:46:34,010 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:46:34,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:34,010 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 07:46:34,010 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:46:34,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:34,011 INFO L85 PathProgramCache]: Analyzing trace with hash 315632233, now seen corresponding path program 1 times [2023-08-26 07:46:34,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:34,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825847096] [2023-08-26 07:46:34,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:34,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:46:34,031 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 07:46:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:46:34,056 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 07:46:34,057 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 07:46:34,057 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 07:46:34,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 07:46:34,057 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 07:46:34,057 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-26 07:46:34,058 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 07:46:34,058 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 07:46:34,097 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 07:46:34,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 270 places, 299 transitions, 616 flow [2023-08-26 07:46:34,138 INFO L124 PetriNetUnfolderBase]: 48/444 cut-off events. [2023-08-26 07:46:34,138 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:46:34,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 444 events. 48/444 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1951 event pairs, 0 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 278. Up to 8 conditions per place. [2023-08-26 07:46:34,142 INFO L82 GeneralOperation]: Start removeDead. Operand has 270 places, 299 transitions, 616 flow [2023-08-26 07:46:34,146 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 270 places, 299 transitions, 616 flow [2023-08-26 07:46:34,146 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:46:34,147 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 270 places, 299 transitions, 616 flow [2023-08-26 07:46:34,147 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 270 places, 299 transitions, 616 flow [2023-08-26 07:46:34,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 270 places, 299 transitions, 616 flow [2023-08-26 07:46:34,184 INFO L124 PetriNetUnfolderBase]: 48/444 cut-off events. [2023-08-26 07:46:34,185 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:46:34,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 444 events. 48/444 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1951 event pairs, 0 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 278. Up to 8 conditions per place. [2023-08-26 07:46:34,206 INFO L119 LiptonReduction]: Number of co-enabled transitions 45396 [2023-08-26 07:46:36,849 INFO L134 LiptonReduction]: Checked pairs total: 182570 [2023-08-26 07:46:36,849 INFO L136 LiptonReduction]: Total number of compositions: 177 [2023-08-26 07:46:36,861 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:46:36,876 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;@217f0df0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:46:36,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-08-26 07:46:36,878 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:46:36,878 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-26 07:46:36,878 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:46:36,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:36,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 07:46:36,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 07:46:36,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:36,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1390395660, now seen corresponding path program 1 times [2023-08-26 07:46:36,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:36,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264318815] [2023-08-26 07:46:36,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:36,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:36,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:36,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:36,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264318815] [2023-08-26 07:46:36,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264318815] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:36,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:36,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:46:36,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882399818] [2023-08-26 07:46:36,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:36,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:46:36,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:36,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:46:36,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:46:36,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 476 [2023-08-26 07:46:36,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 163 transitions, 344 flow. Second operand has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:36,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:36,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 476 [2023-08-26 07:46:36,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:39,002 INFO L124 PetriNetUnfolderBase]: 15142/31223 cut-off events. [2023-08-26 07:46:39,002 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2023-08-26 07:46:39,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54568 conditions, 31223 events. 15142/31223 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 906. Compared 316900 event pairs, 6864 based on Foata normal form. 4148/30876 useless extension candidates. Maximal degree in co-relation 3083. Up to 23158 conditions per place. [2023-08-26 07:46:39,152 INFO L140 encePairwiseOnDemand]: 444/476 looper letters, 87 selfloop transitions, 2 changer transitions 0/157 dead transitions. [2023-08-26 07:46:39,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 157 transitions, 510 flow [2023-08-26 07:46:39,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:46:39,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:46:39,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 899 transitions. [2023-08-26 07:46:39,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6295518207282913 [2023-08-26 07:46:39,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 899 transitions. [2023-08-26 07:46:39,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 899 transitions. [2023-08-26 07:46:39,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:39,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 899 transitions. [2023-08-26 07:46:39,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 299.6666666666667) internal successors, (899), 3 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:39,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:39,158 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:39,159 INFO L175 Difference]: Start difference. First operand has 136 places, 163 transitions, 344 flow. Second operand 3 states and 899 transitions. [2023-08-26 07:46:39,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 157 transitions, 510 flow [2023-08-26 07:46:39,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 157 transitions, 510 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:46:39,162 INFO L231 Difference]: Finished difference. Result has 137 places, 134 transitions, 296 flow [2023-08-26 07:46:39,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=137, PETRI_TRANSITIONS=134} [2023-08-26 07:46:39,163 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 1 predicate places. [2023-08-26 07:46:39,164 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 134 transitions, 296 flow [2023-08-26 07:46:39,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:39,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:39,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 07:46:39,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 07:46:39,164 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 07:46:39,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:39,164 INFO L85 PathProgramCache]: Analyzing trace with hash 148049175, now seen corresponding path program 1 times [2023-08-26 07:46:39,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:39,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493209684] [2023-08-26 07:46:39,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:39,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:39,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:39,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:39,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493209684] [2023-08-26 07:46:39,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493209684] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:39,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:39,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:46:39,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566906999] [2023-08-26 07:46:39,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:39,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:46:39,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:39,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:46:39,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:46:39,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 476 [2023-08-26 07:46:39,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 134 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:39,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:39,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 476 [2023-08-26 07:46:39,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:42,916 INFO L124 PetriNetUnfolderBase]: 34737/67912 cut-off events. [2023-08-26 07:46:42,917 INFO L125 PetriNetUnfolderBase]: For 1381/1381 co-relation queries the response was YES. [2023-08-26 07:46:43,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122787 conditions, 67912 events. 34737/67912 cut-off events. For 1381/1381 co-relation queries the response was YES. Maximal size of possible extension queue 1924. Compared 727422 event pairs, 9169 based on Foata normal form. 0/57320 useless extension candidates. Maximal degree in co-relation 122600. Up to 31312 conditions per place. [2023-08-26 07:46:43,243 INFO L140 encePairwiseOnDemand]: 469/476 looper letters, 137 selfloop transitions, 5 changer transitions 0/203 dead transitions. [2023-08-26 07:46:43,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 203 transitions, 736 flow [2023-08-26 07:46:43,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:46:43,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:46:43,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 907 transitions. [2023-08-26 07:46:43,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6351540616246498 [2023-08-26 07:46:43,246 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 907 transitions. [2023-08-26 07:46:43,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 907 transitions. [2023-08-26 07:46:43,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:43,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 907 transitions. [2023-08-26 07:46:43,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:43,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:43,250 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:43,250 INFO L175 Difference]: Start difference. First operand has 137 places, 134 transitions, 296 flow. Second operand 3 states and 907 transitions. [2023-08-26 07:46:43,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 203 transitions, 736 flow [2023-08-26 07:46:43,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 203 transitions, 733 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:46:43,254 INFO L231 Difference]: Finished difference. Result has 140 places, 139 transitions, 338 flow [2023-08-26 07:46:43,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=140, PETRI_TRANSITIONS=139} [2023-08-26 07:46:43,255 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 4 predicate places. [2023-08-26 07:46:43,255 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 139 transitions, 338 flow [2023-08-26 07:46:43,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:43,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:43,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:43,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 07:46:43,256 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 07:46:43,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:43,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1879125089, now seen corresponding path program 1 times [2023-08-26 07:46:43,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:43,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622250315] [2023-08-26 07:46:43,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:43,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:43,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:43,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:43,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622250315] [2023-08-26 07:46:43,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622250315] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:46:43,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651436759] [2023-08-26 07:46:43,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:43,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:46:43,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:46:43,296 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:46:43,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 07:46:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:43,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:46:43,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:46:43,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 07:46:43,368 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 07:46:43,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651436759] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:43,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 07:46:43,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-26 07:46:43,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143167430] [2023-08-26 07:46:43,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:43,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:46:43,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:43,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:46:43,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 07:46:43,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 476 [2023-08-26 07:46:43,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 139 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:43,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:43,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 476 [2023-08-26 07:46:43,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:47,305 INFO L124 PetriNetUnfolderBase]: 34659/69297 cut-off events. [2023-08-26 07:46:47,306 INFO L125 PetriNetUnfolderBase]: For 8257/8257 co-relation queries the response was YES. [2023-08-26 07:46:47,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129841 conditions, 69297 events. 34659/69297 cut-off events. For 8257/8257 co-relation queries the response was YES. Maximal size of possible extension queue 2042. Compared 752845 event pairs, 28306 based on Foata normal form. 0/59348 useless extension candidates. Maximal degree in co-relation 43806. Up to 50386 conditions per place. [2023-08-26 07:46:47,577 INFO L140 encePairwiseOnDemand]: 471/476 looper letters, 126 selfloop transitions, 7 changer transitions 0/194 dead transitions. [2023-08-26 07:46:47,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 194 transitions, 742 flow [2023-08-26 07:46:47,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:46:47,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:46:47,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 880 transitions. [2023-08-26 07:46:47,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6162464985994398 [2023-08-26 07:46:47,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 880 transitions. [2023-08-26 07:46:47,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 880 transitions. [2023-08-26 07:46:47,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:47,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 880 transitions. [2023-08-26 07:46:47,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 293.3333333333333) internal successors, (880), 3 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:47,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:47,589 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:47,589 INFO L175 Difference]: Start difference. First operand has 140 places, 139 transitions, 338 flow. Second operand 3 states and 880 transitions. [2023-08-26 07:46:47,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 194 transitions, 742 flow [2023-08-26 07:46:47,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 194 transitions, 724 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:46:47,605 INFO L231 Difference]: Finished difference. Result has 141 places, 144 transitions, 379 flow [2023-08-26 07:46:47,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=379, PETRI_PLACES=141, PETRI_TRANSITIONS=144} [2023-08-26 07:46:47,606 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 5 predicate places. [2023-08-26 07:46:47,606 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 144 transitions, 379 flow [2023-08-26 07:46:47,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:47,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:47,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:47,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-26 07:46:47,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:46:47,811 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 07:46:47,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:47,811 INFO L85 PathProgramCache]: Analyzing trace with hash 2053726671, now seen corresponding path program 1 times [2023-08-26 07:46:47,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:47,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326461327] [2023-08-26 07:46:47,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:47,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:47,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:47,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:47,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326461327] [2023-08-26 07:46:47,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326461327] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:46:47,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106654775] [2023-08-26 07:46:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:47,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:46:47,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:46:47,849 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:46:47,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 07:46:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:47,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:46:47,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:46:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:47,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:46:47,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:47,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106654775] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:46:47,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:46:47,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:46:47,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453307271] [2023-08-26 07:46:47,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:46:47,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:46:47,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:47,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:46:47,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:46:47,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 476 [2023-08-26 07:46:47,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 144 transitions, 379 flow. Second operand has 7 states, 7 states have (on average 258.42857142857144) internal successors, (1809), 7 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:47,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:47,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 476 [2023-08-26 07:46:47,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:48,283 INFO L124 PetriNetUnfolderBase]: 2698/6406 cut-off events. [2023-08-26 07:46:48,283 INFO L125 PetriNetUnfolderBase]: For 1429/1438 co-relation queries the response was YES. [2023-08-26 07:46:48,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12011 conditions, 6406 events. 2698/6406 cut-off events. For 1429/1438 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 55287 event pairs, 483 based on Foata normal form. 570/6480 useless extension candidates. Maximal degree in co-relation 12003. Up to 3215 conditions per place. [2023-08-26 07:46:48,305 INFO L140 encePairwiseOnDemand]: 473/476 looper letters, 119 selfloop transitions, 3 changer transitions 0/182 dead transitions. [2023-08-26 07:46:48,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 182 transitions, 654 flow [2023-08-26 07:46:48,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 07:46:48,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 07:46:48,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1402 transitions. [2023-08-26 07:46:48,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5890756302521009 [2023-08-26 07:46:48,308 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1402 transitions. [2023-08-26 07:46:48,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1402 transitions. [2023-08-26 07:46:48,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:48,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1402 transitions. [2023-08-26 07:46:48,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 280.4) internal successors, (1402), 5 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:48,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:48,313 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:48,313 INFO L175 Difference]: Start difference. First operand has 141 places, 144 transitions, 379 flow. Second operand 5 states and 1402 transitions. [2023-08-26 07:46:48,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 182 transitions, 654 flow [2023-08-26 07:46:48,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 182 transitions, 640 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-26 07:46:48,316 INFO L231 Difference]: Finished difference. Result has 121 places, 112 transitions, 258 flow [2023-08-26 07:46:48,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=121, PETRI_TRANSITIONS=112} [2023-08-26 07:46:48,317 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, -15 predicate places. [2023-08-26 07:46:48,317 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 112 transitions, 258 flow [2023-08-26 07:46:48,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 258.42857142857144) internal successors, (1809), 7 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:48,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:48,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:48,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 07:46:48,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:46:48,522 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 07:46:48,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:48,522 INFO L85 PathProgramCache]: Analyzing trace with hash -437856346, now seen corresponding path program 1 times [2023-08-26 07:46:48,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:48,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704363968] [2023-08-26 07:46:48,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:48,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:48,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:48,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:48,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704363968] [2023-08-26 07:46:48,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704363968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:48,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:48,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:46:48,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473304598] [2023-08-26 07:46:48,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:48,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:46:48,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:48,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:46:48,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:46:48,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 476 [2023-08-26 07:46:48,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 112 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:48,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:48,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 476 [2023-08-26 07:46:48,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:49,452 INFO L124 PetriNetUnfolderBase]: 9187/16412 cut-off events. [2023-08-26 07:46:49,452 INFO L125 PetriNetUnfolderBase]: For 5995/5995 co-relation queries the response was YES. [2023-08-26 07:46:49,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35536 conditions, 16412 events. 9187/16412 cut-off events. For 5995/5995 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 127741 event pairs, 4570 based on Foata normal form. 0/14481 useless extension candidates. Maximal degree in co-relation 35528. Up to 8833 conditions per place. [2023-08-26 07:46:49,503 INFO L140 encePairwiseOnDemand]: 444/476 looper letters, 137 selfloop transitions, 24 changer transitions 0/187 dead transitions. [2023-08-26 07:46:49,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 187 transitions, 745 flow [2023-08-26 07:46:49,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:46:49,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:46:49,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 805 transitions. [2023-08-26 07:46:49,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5637254901960784 [2023-08-26 07:46:49,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 805 transitions. [2023-08-26 07:46:49,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 805 transitions. [2023-08-26 07:46:49,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:49,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 805 transitions. [2023-08-26 07:46:49,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:49,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:49,509 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:49,509 INFO L175 Difference]: Start difference. First operand has 121 places, 112 transitions, 258 flow. Second operand 3 states and 805 transitions. [2023-08-26 07:46:49,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 187 transitions, 745 flow [2023-08-26 07:46:49,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 187 transitions, 734 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-26 07:46:49,513 INFO L231 Difference]: Finished difference. Result has 122 places, 136 transitions, 459 flow [2023-08-26 07:46:49,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=459, PETRI_PLACES=122, PETRI_TRANSITIONS=136} [2023-08-26 07:46:49,513 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, -14 predicate places. [2023-08-26 07:46:49,513 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 136 transitions, 459 flow [2023-08-26 07:46:49,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:49,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:49,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:49,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 07:46:49,514 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 07:46:49,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:49,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1675326937, now seen corresponding path program 1 times [2023-08-26 07:46:49,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:49,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261978386] [2023-08-26 07:46:49,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:49,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:49,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:49,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:49,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261978386] [2023-08-26 07:46:49,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261978386] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:49,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:49,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:46:49,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203757840] [2023-08-26 07:46:49,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:49,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:46:49,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:49,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:46:49,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:46:49,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 476 [2023-08-26 07:46:49,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 136 transitions, 459 flow. Second operand has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:49,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:49,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 476 [2023-08-26 07:46:49,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:50,544 INFO L124 PetriNetUnfolderBase]: 9325/16481 cut-off events. [2023-08-26 07:46:50,544 INFO L125 PetriNetUnfolderBase]: For 7962/8067 co-relation queries the response was YES. [2023-08-26 07:46:50,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40256 conditions, 16481 events. 9325/16481 cut-off events. For 7962/8067 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 126748 event pairs, 7333 based on Foata normal form. 18/14943 useless extension candidates. Maximal degree in co-relation 40248. Up to 14404 conditions per place. [2023-08-26 07:46:50,613 INFO L140 encePairwiseOnDemand]: 464/476 looper letters, 147 selfloop transitions, 16 changer transitions 0/189 dead transitions. [2023-08-26 07:46:50,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 189 transitions, 974 flow [2023-08-26 07:46:50,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:46:50,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:46:50,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 759 transitions. [2023-08-26 07:46:50,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5315126050420168 [2023-08-26 07:46:50,615 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 759 transitions. [2023-08-26 07:46:50,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 759 transitions. [2023-08-26 07:46:50,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:50,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 759 transitions. [2023-08-26 07:46:50,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:50,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:50,619 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:50,619 INFO L175 Difference]: Start difference. First operand has 122 places, 136 transitions, 459 flow. Second operand 3 states and 759 transitions. [2023-08-26 07:46:50,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 189 transitions, 974 flow [2023-08-26 07:46:50,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 189 transitions, 902 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:46:50,631 INFO L231 Difference]: Finished difference. Result has 124 places, 150 transitions, 557 flow [2023-08-26 07:46:50,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=557, PETRI_PLACES=124, PETRI_TRANSITIONS=150} [2023-08-26 07:46:50,631 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, -12 predicate places. [2023-08-26 07:46:50,631 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 150 transitions, 557 flow [2023-08-26 07:46:50,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:50,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:50,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:50,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 07:46:50,632 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr6ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 07:46:50,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:50,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1226597665, now seen corresponding path program 1 times [2023-08-26 07:46:50,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:50,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679386750] [2023-08-26 07:46:50,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:50,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:50,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:50,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:50,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679386750] [2023-08-26 07:46:50,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679386750] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:50,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:50,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:46:50,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272761229] [2023-08-26 07:46:50,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:50,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:46:50,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:50,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:46:50,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:46:50,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 476 [2023-08-26 07:46:50,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 150 transitions, 557 flow. Second operand has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:50,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:50,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 476 [2023-08-26 07:46:50,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:51,701 INFO L124 PetriNetUnfolderBase]: 9326/16491 cut-off events. [2023-08-26 07:46:51,701 INFO L125 PetriNetUnfolderBase]: For 7405/7549 co-relation queries the response was YES. [2023-08-26 07:46:51,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40365 conditions, 16491 events. 9326/16491 cut-off events. For 7405/7549 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 126795 event pairs, 7443 based on Foata normal form. 21/14725 useless extension candidates. Maximal degree in co-relation 40356. Up to 14850 conditions per place. [2023-08-26 07:46:51,750 INFO L140 encePairwiseOnDemand]: 465/476 looper letters, 157 selfloop transitions, 15 changer transitions 0/198 dead transitions. [2023-08-26 07:46:51,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 198 transitions, 1072 flow [2023-08-26 07:46:51,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:46:51,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:46:51,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 758 transitions. [2023-08-26 07:46:51,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.530812324929972 [2023-08-26 07:46:51,753 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 758 transitions. [2023-08-26 07:46:51,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 758 transitions. [2023-08-26 07:46:51,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:51,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 758 transitions. [2023-08-26 07:46:51,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:51,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:51,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:51,756 INFO L175 Difference]: Start difference. First operand has 124 places, 150 transitions, 557 flow. Second operand 3 states and 758 transitions. [2023-08-26 07:46:51,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 198 transitions, 1072 flow [2023-08-26 07:46:51,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 198 transitions, 1040 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:46:51,777 INFO L231 Difference]: Finished difference. Result has 125 places, 163 transitions, 672 flow [2023-08-26 07:46:51,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=672, PETRI_PLACES=125, PETRI_TRANSITIONS=163} [2023-08-26 07:46:51,777 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, -11 predicate places. [2023-08-26 07:46:51,777 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 163 transitions, 672 flow [2023-08-26 07:46:51,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:51,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:51,778 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:51,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 07:46:51,778 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 07:46:51,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:51,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1626135308, now seen corresponding path program 1 times [2023-08-26 07:46:51,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:51,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957711082] [2023-08-26 07:46:51,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:51,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:51,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:46:51,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:51,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957711082] [2023-08-26 07:46:51,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957711082] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:51,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:51,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:46:51,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579169784] [2023-08-26 07:46:51,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:51,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:46:51,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:51,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:46:51,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:46:51,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 476 [2023-08-26 07:46:51,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 163 transitions, 672 flow. Second operand has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:51,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:51,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 476 [2023-08-26 07:46:51,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:52,732 INFO L124 PetriNetUnfolderBase]: 9281/16455 cut-off events. [2023-08-26 07:46:52,732 INFO L125 PetriNetUnfolderBase]: For 9961/10141 co-relation queries the response was YES. [2023-08-26 07:46:52,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41428 conditions, 16455 events. 9281/16455 cut-off events. For 9961/10141 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 126784 event pairs, 7289 based on Foata normal form. 15/14701 useless extension candidates. Maximal degree in co-relation 41418. Up to 14753 conditions per place. [2023-08-26 07:46:52,890 INFO L140 encePairwiseOnDemand]: 465/476 looper letters, 166 selfloop transitions, 19 changer transitions 0/211 dead transitions. [2023-08-26 07:46:52,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 211 transitions, 1202 flow [2023-08-26 07:46:52,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:46:52,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:46:52,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 758 transitions. [2023-08-26 07:46:52,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.530812324929972 [2023-08-26 07:46:52,892 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 758 transitions. [2023-08-26 07:46:52,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 758 transitions. [2023-08-26 07:46:52,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:52,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 758 transitions. [2023-08-26 07:46:52,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:52,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:52,895 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:52,895 INFO L175 Difference]: Start difference. First operand has 125 places, 163 transitions, 672 flow. Second operand 3 states and 758 transitions. [2023-08-26 07:46:52,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 211 transitions, 1202 flow [2023-08-26 07:46:52,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 211 transitions, 1161 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-26 07:46:52,906 INFO L231 Difference]: Finished difference. Result has 127 places, 176 transitions, 776 flow [2023-08-26 07:46:52,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=776, PETRI_PLACES=127, PETRI_TRANSITIONS=176} [2023-08-26 07:46:52,906 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, -9 predicate places. [2023-08-26 07:46:52,907 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 176 transitions, 776 flow [2023-08-26 07:46:52,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:52,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:52,907 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:52,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 07:46:52,907 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr6ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 07:46:52,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:52,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1026839271, now seen corresponding path program 1 times [2023-08-26 07:46:52,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:52,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585776657] [2023-08-26 07:46:52,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:52,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:52,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:46:52,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:52,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585776657] [2023-08-26 07:46:52,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585776657] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:52,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:52,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:46:52,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026733387] [2023-08-26 07:46:52,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:52,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:46:52,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:52,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:46:52,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:46:52,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 476 [2023-08-26 07:46:52,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 176 transitions, 776 flow. Second operand has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:52,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:52,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 476 [2023-08-26 07:46:52,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:54,088 INFO L124 PetriNetUnfolderBase]: 9236/16395 cut-off events. [2023-08-26 07:46:54,088 INFO L125 PetriNetUnfolderBase]: For 12535/12721 co-relation queries the response was YES. [2023-08-26 07:46:54,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42761 conditions, 16395 events. 9236/16395 cut-off events. For 12535/12721 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 126349 event pairs, 7160 based on Foata normal form. 12/14749 useless extension candidates. Maximal degree in co-relation 42750. Up to 14681 conditions per place. [2023-08-26 07:46:54,191 INFO L140 encePairwiseOnDemand]: 465/476 looper letters, 179 selfloop transitions, 19 changer transitions 0/224 dead transitions. [2023-08-26 07:46:54,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 224 transitions, 1354 flow [2023-08-26 07:46:54,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:46:54,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:46:54,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 758 transitions. [2023-08-26 07:46:54,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.530812324929972 [2023-08-26 07:46:54,199 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 758 transitions. [2023-08-26 07:46:54,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 758 transitions. [2023-08-26 07:46:54,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:54,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 758 transitions. [2023-08-26 07:46:54,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:54,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:54,202 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:54,202 INFO L175 Difference]: Start difference. First operand has 127 places, 176 transitions, 776 flow. Second operand 3 states and 758 transitions. [2023-08-26 07:46:54,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 224 transitions, 1354 flow [2023-08-26 07:46:54,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 224 transitions, 1335 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:46:54,227 INFO L231 Difference]: Finished difference. Result has 129 places, 189 transitions, 924 flow [2023-08-26 07:46:54,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=924, PETRI_PLACES=129, PETRI_TRANSITIONS=189} [2023-08-26 07:46:54,227 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, -7 predicate places. [2023-08-26 07:46:54,227 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 189 transitions, 924 flow [2023-08-26 07:46:54,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:54,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:54,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:54,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-26 07:46:54,228 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 07:46:54,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:54,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1049854400, now seen corresponding path program 1 times [2023-08-26 07:46:54,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:54,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127920702] [2023-08-26 07:46:54,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:54,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:54,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:54,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:54,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127920702] [2023-08-26 07:46:54,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127920702] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:54,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:54,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:46:54,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588462123] [2023-08-26 07:46:54,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:54,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:46:54,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:54,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:46:54,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:46:54,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 476 [2023-08-26 07:46:54,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 189 transitions, 924 flow. Second operand has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:54,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:54,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 476 [2023-08-26 07:46:54,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:55,403 INFO L124 PetriNetUnfolderBase]: 9197/16359 cut-off events. [2023-08-26 07:46:55,403 INFO L125 PetriNetUnfolderBase]: For 15735/15918 co-relation queries the response was YES. [2023-08-26 07:46:55,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44114 conditions, 16359 events. 9197/16359 cut-off events. For 15735/15918 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 126102 event pairs, 7038 based on Foata normal form. 15/14818 useless extension candidates. Maximal degree in co-relation 44102. Up to 14634 conditions per place. [2023-08-26 07:46:55,458 INFO L140 encePairwiseOnDemand]: 465/476 looper letters, 186 selfloop transitions, 19 changer transitions 6/237 dead transitions. [2023-08-26 07:46:55,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 237 transitions, 1559 flow [2023-08-26 07:46:55,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:46:55,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:46:55,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 758 transitions. [2023-08-26 07:46:55,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.530812324929972 [2023-08-26 07:46:55,465 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 758 transitions. [2023-08-26 07:46:55,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 758 transitions. [2023-08-26 07:46:55,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:55,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 758 transitions. [2023-08-26 07:46:55,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:55,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:55,476 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:55,476 INFO L175 Difference]: Start difference. First operand has 129 places, 189 transitions, 924 flow. Second operand 3 states and 758 transitions. [2023-08-26 07:46:55,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 237 transitions, 1559 flow [2023-08-26 07:46:55,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 237 transitions, 1514 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-26 07:46:55,511 INFO L231 Difference]: Finished difference. Result has 131 places, 202 transitions, 1072 flow [2023-08-26 07:46:55,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1072, PETRI_PLACES=131, PETRI_TRANSITIONS=202} [2023-08-26 07:46:55,511 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, -5 predicate places. [2023-08-26 07:46:55,511 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 202 transitions, 1072 flow [2023-08-26 07:46:55,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:55,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:55,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:55,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-26 07:46:55,512 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr8ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 07:46:55,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:55,512 INFO L85 PathProgramCache]: Analyzing trace with hash 622007215, now seen corresponding path program 1 times [2023-08-26 07:46:55,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:55,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918093842] [2023-08-26 07:46:55,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:55,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:55,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:55,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918093842] [2023-08-26 07:46:55,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918093842] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:55,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:55,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:46:55,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128153782] [2023-08-26 07:46:55,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:55,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:46:55,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:55,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:46:55,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:46:55,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 476 [2023-08-26 07:46:55,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 202 transitions, 1072 flow. Second operand has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:55,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:55,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 476 [2023-08-26 07:46:55,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:56,714 INFO L124 PetriNetUnfolderBase]: 9285/16567 cut-off events. [2023-08-26 07:46:56,714 INFO L125 PetriNetUnfolderBase]: For 20215/20437 co-relation queries the response was YES. [2023-08-26 07:46:56,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45963 conditions, 16567 events. 9285/16567 cut-off events. For 20215/20437 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 128019 event pairs, 6749 based on Foata normal form. 21/15131 useless extension candidates. Maximal degree in co-relation 45950. Up to 14333 conditions per place. [2023-08-26 07:46:56,922 INFO L140 encePairwiseOnDemand]: 464/476 looper letters, 205 selfloop transitions, 20 changer transitions 6/257 dead transitions. [2023-08-26 07:46:56,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 257 transitions, 1795 flow [2023-08-26 07:46:56,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:46:56,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:46:56,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 759 transitions. [2023-08-26 07:46:56,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5315126050420168 [2023-08-26 07:46:56,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 759 transitions. [2023-08-26 07:46:56,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 759 transitions. [2023-08-26 07:46:56,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:56,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 759 transitions. [2023-08-26 07:46:56,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:56,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:56,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:56,935 INFO L175 Difference]: Start difference. First operand has 131 places, 202 transitions, 1072 flow. Second operand 3 states and 759 transitions. [2023-08-26 07:46:56,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 257 transitions, 1795 flow [2023-08-26 07:46:56,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 257 transitions, 1728 flow, removed 24 selfloop flow, removed 1 redundant places. [2023-08-26 07:46:56,957 INFO L231 Difference]: Finished difference. Result has 134 places, 216 transitions, 1247 flow [2023-08-26 07:46:56,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1247, PETRI_PLACES=134, PETRI_TRANSITIONS=216} [2023-08-26 07:46:56,958 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, -2 predicate places. [2023-08-26 07:46:56,958 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 216 transitions, 1247 flow [2023-08-26 07:46:56,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:56,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:56,959 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:56,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-26 07:46:56,959 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 07:46:56,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:56,959 INFO L85 PathProgramCache]: Analyzing trace with hash 984879588, now seen corresponding path program 1 times [2023-08-26 07:46:56,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:56,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044359849] [2023-08-26 07:46:56,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:56,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:57,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 07:46:57,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:57,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044359849] [2023-08-26 07:46:57,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044359849] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:57,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:57,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 07:46:57,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235687069] [2023-08-26 07:46:57,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:57,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 07:46:57,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:57,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 07:46:57,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 07:46:57,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 476 [2023-08-26 07:46:57,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 216 transitions, 1247 flow. Second operand has 4 states, 4 states have (on average 261.75) internal successors, (1047), 4 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:57,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:57,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 476 [2023-08-26 07:46:57,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:57,606 INFO L124 PetriNetUnfolderBase]: 3109/6737 cut-off events. [2023-08-26 07:46:57,606 INFO L125 PetriNetUnfolderBase]: For 12252/12558 co-relation queries the response was YES. [2023-08-26 07:46:57,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18638 conditions, 6737 events. 3109/6737 cut-off events. For 12252/12558 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 52818 event pairs, 540 based on Foata normal form. 99/6531 useless extension candidates. Maximal degree in co-relation 18624. Up to 4156 conditions per place. [2023-08-26 07:46:57,651 INFO L140 encePairwiseOnDemand]: 473/476 looper letters, 92 selfloop transitions, 2 changer transitions 0/176 dead transitions. [2023-08-26 07:46:57,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 176 transitions, 1158 flow [2023-08-26 07:46:57,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:46:57,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:46:57,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1102 transitions. [2023-08-26 07:46:57,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5787815126050421 [2023-08-26 07:46:57,654 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1102 transitions. [2023-08-26 07:46:57,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1102 transitions. [2023-08-26 07:46:57,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:57,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1102 transitions. [2023-08-26 07:46:57,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 275.5) internal successors, (1102), 4 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:57,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 476.0) internal successors, (2380), 5 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:57,658 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 476.0) internal successors, (2380), 5 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:57,658 INFO L175 Difference]: Start difference. First operand has 134 places, 216 transitions, 1247 flow. Second operand 4 states and 1102 transitions. [2023-08-26 07:46:57,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 176 transitions, 1158 flow [2023-08-26 07:46:57,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 176 transitions, 982 flow, removed 68 selfloop flow, removed 4 redundant places. [2023-08-26 07:46:57,688 INFO L231 Difference]: Finished difference. Result has 109 places, 148 transitions, 703 flow [2023-08-26 07:46:57,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=703, PETRI_PLACES=109, PETRI_TRANSITIONS=148} [2023-08-26 07:46:57,689 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, -27 predicate places. [2023-08-26 07:46:57,689 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 148 transitions, 703 flow [2023-08-26 07:46:57,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.75) internal successors, (1047), 4 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:57,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:57,690 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:57,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-26 07:46:57,690 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 07:46:57,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:57,690 INFO L85 PathProgramCache]: Analyzing trace with hash -30153283, now seen corresponding path program 1 times [2023-08-26 07:46:57,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:57,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211656433] [2023-08-26 07:46:57,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:57,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:57,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:46:57,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:57,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211656433] [2023-08-26 07:46:57,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211656433] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:57,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:57,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:46:57,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913923993] [2023-08-26 07:46:57,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:57,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:46:57,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:57,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:46:57,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:46:57,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 476 [2023-08-26 07:46:57,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 148 transitions, 703 flow. Second operand has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:57,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:57,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 476 [2023-08-26 07:46:57,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:58,349 INFO L124 PetriNetUnfolderBase]: 4914/8973 cut-off events. [2023-08-26 07:46:58,349 INFO L125 PetriNetUnfolderBase]: For 8330/8474 co-relation queries the response was YES. [2023-08-26 07:46:58,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24376 conditions, 8973 events. 4914/8973 cut-off events. For 8330/8474 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 62911 event pairs, 3734 based on Foata normal form. 12/8336 useless extension candidates. Maximal degree in co-relation 24364. Up to 7913 conditions per place. [2023-08-26 07:46:58,390 INFO L140 encePairwiseOnDemand]: 469/476 looper letters, 135 selfloop transitions, 13 changer transitions 5/175 dead transitions. [2023-08-26 07:46:58,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 175 transitions, 1129 flow [2023-08-26 07:46:58,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:46:58,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:46:58,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 720 transitions. [2023-08-26 07:46:58,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042016806722689 [2023-08-26 07:46:58,392 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 720 transitions. [2023-08-26 07:46:58,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 720 transitions. [2023-08-26 07:46:58,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:58,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 720 transitions. [2023-08-26 07:46:58,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:58,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:58,394 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:58,395 INFO L175 Difference]: Start difference. First operand has 109 places, 148 transitions, 703 flow. Second operand 3 states and 720 transitions. [2023-08-26 07:46:58,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 175 transitions, 1129 flow [2023-08-26 07:46:58,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 175 transitions, 1126 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:46:58,401 INFO L231 Difference]: Finished difference. Result has 110 places, 154 transitions, 809 flow [2023-08-26 07:46:58,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=809, PETRI_PLACES=110, PETRI_TRANSITIONS=154} [2023-08-26 07:46:58,402 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, -26 predicate places. [2023-08-26 07:46:58,402 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 154 transitions, 809 flow [2023-08-26 07:46:58,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:58,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:58,402 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:58,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-26 07:46:58,402 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 07:46:58,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:58,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1830473596, now seen corresponding path program 1 times [2023-08-26 07:46:58,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:58,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862166890] [2023-08-26 07:46:58,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:58,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:46:58,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:58,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862166890] [2023-08-26 07:46:58,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862166890] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:58,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:58,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 07:46:58,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648758214] [2023-08-26 07:46:58,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:58,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 07:46:58,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:58,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 07:46:58,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 07:46:58,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 476 [2023-08-26 07:46:58,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 154 transitions, 809 flow. Second operand has 5 states, 5 states have (on average 225.0) internal successors, (1125), 5 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:58,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:58,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 476 [2023-08-26 07:46:58,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:58,849 INFO L124 PetriNetUnfolderBase]: 1239/3012 cut-off events. [2023-08-26 07:46:58,849 INFO L125 PetriNetUnfolderBase]: For 2767/2779 co-relation queries the response was YES. [2023-08-26 07:46:58,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7608 conditions, 3012 events. 1239/3012 cut-off events. For 2767/2779 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 20651 event pairs, 434 based on Foata normal form. 186/3140 useless extension candidates. Maximal degree in co-relation 7595. Up to 1363 conditions per place. [2023-08-26 07:46:58,862 INFO L140 encePairwiseOnDemand]: 461/476 looper letters, 49 selfloop transitions, 14 changer transitions 20/115 dead transitions. [2023-08-26 07:46:58,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 115 transitions, 596 flow [2023-08-26 07:46:58,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:46:58,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:46:58,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 974 transitions. [2023-08-26 07:46:58,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115546218487395 [2023-08-26 07:46:58,864 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 974 transitions. [2023-08-26 07:46:58,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 974 transitions. [2023-08-26 07:46:58,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:58,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 974 transitions. [2023-08-26 07:46:58,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 243.5) internal successors, (974), 4 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:58,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 476.0) internal successors, (2380), 5 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:58,868 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 476.0) internal successors, (2380), 5 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:58,868 INFO L175 Difference]: Start difference. First operand has 110 places, 154 transitions, 809 flow. Second operand 4 states and 974 transitions. [2023-08-26 07:46:58,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 115 transitions, 596 flow [2023-08-26 07:46:58,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 115 transitions, 435 flow, removed 47 selfloop flow, removed 13 redundant places. [2023-08-26 07:46:58,881 INFO L231 Difference]: Finished difference. Result has 90 places, 80 transitions, 235 flow [2023-08-26 07:46:58,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=90, PETRI_TRANSITIONS=80} [2023-08-26 07:46:58,882 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, -46 predicate places. [2023-08-26 07:46:58,882 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 80 transitions, 235 flow [2023-08-26 07:46:58,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 225.0) internal successors, (1125), 5 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:58,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:58,882 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:58,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-26 07:46:58,882 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr8ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 07:46:58,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:58,883 INFO L85 PathProgramCache]: Analyzing trace with hash -340156619, now seen corresponding path program 1 times [2023-08-26 07:46:58,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:58,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348623013] [2023-08-26 07:46:58,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:58,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:58,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:46:58,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:58,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348623013] [2023-08-26 07:46:58,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348623013] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:58,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:58,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:46:58,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583244098] [2023-08-26 07:46:58,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:58,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:46:58,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:58,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:46:58,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:46:58,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 476 [2023-08-26 07:46:58,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 80 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:58,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:58,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 476 [2023-08-26 07:46:58,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:59,120 INFO L124 PetriNetUnfolderBase]: 1542/3285 cut-off events. [2023-08-26 07:46:59,120 INFO L125 PetriNetUnfolderBase]: For 764/764 co-relation queries the response was YES. [2023-08-26 07:46:59,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7479 conditions, 3285 events. 1542/3285 cut-off events. For 764/764 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 21121 event pairs, 1442 based on Foata normal form. 0/3209 useless extension candidates. Maximal degree in co-relation 7471. Up to 2720 conditions per place. [2023-08-26 07:46:59,127 INFO L140 encePairwiseOnDemand]: 473/476 looper letters, 0 selfloop transitions, 0 changer transitions 85/85 dead transitions. [2023-08-26 07:46:59,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 85 transitions, 376 flow [2023-08-26 07:46:59,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:46:59,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:46:59,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 690 transitions. [2023-08-26 07:46:59,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831932773109244 [2023-08-26 07:46:59,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 690 transitions. [2023-08-26 07:46:59,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 690 transitions. [2023-08-26 07:46:59,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:59,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 690 transitions. [2023-08-26 07:46:59,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:59,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:59,131 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:59,131 INFO L175 Difference]: Start difference. First operand has 90 places, 80 transitions, 235 flow. Second operand 3 states and 690 transitions. [2023-08-26 07:46:59,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 85 transitions, 376 flow [2023-08-26 07:46:59,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 85 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:46:59,133 INFO L231 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2023-08-26 07:46:59,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2023-08-26 07:46:59,133 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, -46 predicate places. [2023-08-26 07:46:59,134 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2023-08-26 07:46:59,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:59,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (30 of 31 remaining) [2023-08-26 07:46:59,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2023-08-26 07:46:59,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2023-08-26 07:46:59,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2023-08-26 07:46:59,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2023-08-26 07:46:59,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2023-08-26 07:46:59,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2023-08-26 07:46:59,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2023-08-26 07:46:59,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2023-08-26 07:46:59,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2023-08-26 07:46:59,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2023-08-26 07:46:59,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2023-08-26 07:46:59,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2023-08-26 07:46:59,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2023-08-26 07:46:59,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2023-08-26 07:46:59,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2023-08-26 07:46:59,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2023-08-26 07:46:59,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2023-08-26 07:46:59,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr8ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2023-08-26 07:46:59,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (11 of 31 remaining) [2023-08-26 07:46:59,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr8ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2023-08-26 07:46:59,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2023-08-26 07:46:59,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr8ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2023-08-26 07:46:59,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2023-08-26 07:46:59,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2023-08-26 07:46:59,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2023-08-26 07:46:59,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2023-08-26 07:46:59,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2023-08-26 07:46:59,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2023-08-26 07:46:59,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2023-08-26 07:46:59,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2023-08-26 07:46:59,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-26 07:46:59,136 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:59,137 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-26 07:46:59,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 270 places, 299 transitions, 616 flow [2023-08-26 07:46:59,168 INFO L124 PetriNetUnfolderBase]: 48/444 cut-off events. [2023-08-26 07:46:59,168 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:46:59,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 444 events. 48/444 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1951 event pairs, 0 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 278. Up to 8 conditions per place. [2023-08-26 07:46:59,172 INFO L82 GeneralOperation]: Start removeDead. Operand has 270 places, 299 transitions, 616 flow [2023-08-26 07:46:59,174 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 270 places, 299 transitions, 616 flow [2023-08-26 07:46:59,174 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:46:59,174 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 270 places, 299 transitions, 616 flow [2023-08-26 07:46:59,174 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 270 places, 299 transitions, 616 flow [2023-08-26 07:46:59,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 270 places, 299 transitions, 616 flow [2023-08-26 07:46:59,204 INFO L124 PetriNetUnfolderBase]: 48/444 cut-off events. [2023-08-26 07:46:59,204 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:46:59,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 444 events. 48/444 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1951 event pairs, 0 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 278. Up to 8 conditions per place. [2023-08-26 07:46:59,217 INFO L119 LiptonReduction]: Number of co-enabled transitions 45396 [2023-08-26 07:47:01,963 INFO L134 LiptonReduction]: Checked pairs total: 204970 [2023-08-26 07:47:01,963 INFO L136 LiptonReduction]: Total number of compositions: 177 [2023-08-26 07:47:01,964 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 07:47:01,964 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;@217f0df0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:47:01,965 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 07:47:01,973 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:47:01,973 INFO L124 PetriNetUnfolderBase]: 5/60 cut-off events. [2023-08-26 07:47:01,973 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 07:47:01,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:47:01,973 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 07:47:01,974 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:47:01,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:47:01,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1508387669, now seen corresponding path program 1 times [2023-08-26 07:47:01,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:47:01,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752608690] [2023-08-26 07:47:01,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:47:01,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:47:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:47:01,990 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 07:47:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:47:02,003 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 07:47:02,003 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 07:47:02,003 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 07:47:02,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-26 07:47:02,003 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 07:47:02,003 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-26 07:47:02,003 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 07:47:02,003 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 07:47:02,032 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 07:47:02,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 357 places, 398 transitions, 826 flow [2023-08-26 07:47:02,098 INFO L124 PetriNetUnfolderBase]: 75/676 cut-off events. [2023-08-26 07:47:02,098 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 07:47:02,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 676 events. 75/676 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3251 event pairs, 1 based on Foata normal form. 0/550 useless extension candidates. Maximal degree in co-relation 452. Up to 16 conditions per place. [2023-08-26 07:47:02,106 INFO L82 GeneralOperation]: Start removeDead. Operand has 357 places, 398 transitions, 826 flow [2023-08-26 07:47:02,110 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 357 places, 398 transitions, 826 flow [2023-08-26 07:47:02,110 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:47:02,110 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 357 places, 398 transitions, 826 flow [2023-08-26 07:47:02,110 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 357 places, 398 transitions, 826 flow [2023-08-26 07:47:02,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 357 places, 398 transitions, 826 flow [2023-08-26 07:47:02,188 INFO L124 PetriNetUnfolderBase]: 75/676 cut-off events. [2023-08-26 07:47:02,188 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 07:47:02,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 676 events. 75/676 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3251 event pairs, 1 based on Foata normal form. 0/550 useless extension candidates. Maximal degree in co-relation 452. Up to 16 conditions per place. [2023-08-26 07:47:02,220 INFO L119 LiptonReduction]: Number of co-enabled transitions 97194 [2023-08-26 07:47:05,309 INFO L134 LiptonReduction]: Checked pairs total: 414214 [2023-08-26 07:47:05,309 INFO L136 LiptonReduction]: Total number of compositions: 219 [2023-08-26 07:47:05,310 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:47:05,310 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;@217f0df0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:47:05,310 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-08-26 07:47:05,311 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:47:05,311 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-26 07:47:05,311 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:47:05,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:47:05,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 07:47:05,312 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr6ASSERT_VIOLATIONDATA_RACE, t_funErr6ASSERT_VIOLATIONDATA_RACE, t_funErr8ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-08-26 07:47:05,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:47:05,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2052484610, now seen corresponding path program 1 times [2023-08-26 07:47:05,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:47:05,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925282010] [2023-08-26 07:47:05,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:47:05,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:47:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:47:05,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:47:05,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:47:05,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925282010] [2023-08-26 07:47:05,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925282010] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:47:05,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:47:05,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:47:05,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130840265] [2023-08-26 07:47:05,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:47:05,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:47:05,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:47:05,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:47:05,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:47:05,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 617 [2023-08-26 07:47:05,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 227 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:47:05,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:47:05,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 617 [2023-08-26 07:47:05,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:48:03,751 INFO L124 PetriNetUnfolderBase]: 515063/868536 cut-off events. [2023-08-26 07:48:03,751 INFO L125 PetriNetUnfolderBase]: For 6060/6060 co-relation queries the response was YES. [2023-08-26 07:48:05,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1567401 conditions, 868536 events. 515063/868536 cut-off events. For 6060/6060 co-relation queries the response was YES. Maximal size of possible extension queue 19892. Compared 10390818 event pairs, 321217 based on Foata normal form. 113813/868946 useless extension candidates. Maximal degree in co-relation 55003. Up to 694624 conditions per place. [2023-08-26 07:48:09,474 INFO L140 encePairwiseOnDemand]: 574/617 looper letters, 112 selfloop transitions, 2 changer transitions 0/212 dead transitions. [2023-08-26 07:48:09,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 212 transitions, 682 flow [2023-08-26 07:48:09,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:48:09,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:48:09,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1190 transitions. [2023-08-26 07:48:09,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428957320367369 [2023-08-26 07:48:09,476 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1190 transitions. [2023-08-26 07:48:09,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1190 transitions. [2023-08-26 07:48:09,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:48:09,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1190 transitions. [2023-08-26 07:48:09,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 396.6666666666667) internal successors, (1190), 3 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:48:09,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:48:09,502 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:48:09,502 INFO L175 Difference]: Start difference. First operand has 189 places, 227 transitions, 484 flow. Second operand 3 states and 1190 transitions. [2023-08-26 07:48:09,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 212 transitions, 682 flow [2023-08-26 07:48:09,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 212 transitions, 682 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:48:09,511 INFO L231 Difference]: Finished difference. Result has 191 places, 188 transitions, 416 flow [2023-08-26 07:48:09,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=416, PETRI_PLACES=191, PETRI_TRANSITIONS=188} [2023-08-26 07:48:09,511 INFO L281 CegarLoopForPetriNet]: 189 programPoint places, 2 predicate places. [2023-08-26 07:48:09,511 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 188 transitions, 416 flow [2023-08-26 07:48:09,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:48:09,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:48:09,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 07:48:09,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-26 07:48:09,512 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr6ASSERT_VIOLATIONDATA_RACE, t_funErr6ASSERT_VIOLATIONDATA_RACE, t_funErr8ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-08-26 07:48:09,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:48:09,514 INFO L85 PathProgramCache]: Analyzing trace with hash 770014784, now seen corresponding path program 1 times [2023-08-26 07:48:09,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:48:09,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870887743] [2023-08-26 07:48:09,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:48:09,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:48:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:48:09,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:48:09,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:48:09,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870887743] [2023-08-26 07:48:09,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870887743] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:48:09,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:48:09,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:48:09,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701078337] [2023-08-26 07:48:09,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:48:09,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:48:09,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:48:09,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:48:09,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:48:09,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 617 [2023-08-26 07:48:09,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 188 transitions, 416 flow. Second operand has 3 states, 3 states have (on average 339.0) internal successors, (1017), 3 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:48:09,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:48:09,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 617 [2023-08-26 07:48:09,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand