/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_05-lockfuns_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 07:40:55,534 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 07:40:55,642 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 07:40:55,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 07:40:55,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 07:40:55,668 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 07:40:55,669 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 07:40:55,673 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 07:40:55,674 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 07:40:55,677 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 07:40:55,678 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 07:40:55,678 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 07:40:55,678 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 07:40:55,679 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 07:40:55,679 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 07:40:55,680 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 07:40:55,680 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 07:40:55,680 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 07:40:55,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 07:40:55,681 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 07:40:55,681 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 07:40:55,682 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 07:40:55,682 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 07:40:55,682 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 07:40:55,683 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 07:40:55,683 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 07:40:55,683 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 07:40:55,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:40:55,684 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 07:40:55,684 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 07:40:55,685 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 07:40:55,685 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 07:40:55,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 07:40:55,685 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 07:40:55,685 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 07:40:55,686 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 07:40:55,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 07:40:56,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 07:40:56,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 07:40:56,014 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 07:40:56,016 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 07:40:56,017 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2023-08-26 07:40:57,029 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 07:40:57,323 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 07:40:57,323 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2023-08-26 07:40:57,340 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3892938fc/7d4f22090e8b49ad862d9da6cad7eb0d/FLAG10f3157fa [2023-08-26 07:40:57,356 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3892938fc/7d4f22090e8b49ad862d9da6cad7eb0d [2023-08-26 07:40:57,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 07:40:57,362 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 07:40:57,365 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 07:40:57,365 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 07:40:57,368 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 07:40:57,369 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:40:57" (1/1) ... [2023-08-26 07:40:57,370 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1074d521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:57, skipping insertion in model container [2023-08-26 07:40:57,370 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:40:57" (1/1) ... [2023-08-26 07:40:57,410 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 07:40:57,729 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:40:57,744 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 07:40:57,771 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 07:40:57,773 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 07:40:57,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:40:57,842 INFO L206 MainTranslator]: Completed translation [2023-08-26 07:40:57,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:57 WrapperNode [2023-08-26 07:40:57,843 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 07:40:57,844 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 07:40:57,844 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 07:40:57,844 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 07:40:57,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:57" (1/1) ... [2023-08-26 07:40:57,870 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:57" (1/1) ... [2023-08-26 07:40:57,899 INFO L138 Inliner]: procedures = 172, calls = 34, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 130 [2023-08-26 07:40:57,899 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 07:40:57,900 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 07:40:57,900 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 07:40:57,900 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 07:40:57,907 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:57" (1/1) ... [2023-08-26 07:40:57,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:57" (1/1) ... [2023-08-26 07:40:57,920 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:57" (1/1) ... [2023-08-26 07:40:57,920 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:57" (1/1) ... [2023-08-26 07:40:57,925 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:57" (1/1) ... [2023-08-26 07:40:57,928 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:57" (1/1) ... [2023-08-26 07:40:57,929 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:57" (1/1) ... [2023-08-26 07:40:57,930 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:57" (1/1) ... [2023-08-26 07:40:57,932 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 07:40:57,933 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 07:40:57,933 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 07:40:57,933 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 07:40:57,933 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:57" (1/1) ... [2023-08-26 07:40:57,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:40:57,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:40:57,974 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 07:40:57,986 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 07:40:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 07:40:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 07:40:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 07:40:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 07:40:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 07:40:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 07:40:58,014 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 07:40:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 07:40:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 07:40:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 07:40:58,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 07:40:58,015 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 07:40:58,168 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 07:40:58,172 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 07:40:58,339 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 07:40:58,350 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 07:40:58,350 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-26 07:40:58,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:40:58 BoogieIcfgContainer [2023-08-26 07:40:58,352 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 07:40:58,353 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 07:40:58,353 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 07:40:58,356 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 07:40:58,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 07:40:57" (1/3) ... [2023-08-26 07:40:58,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba31c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:40:58, skipping insertion in model container [2023-08-26 07:40:58,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:57" (2/3) ... [2023-08-26 07:40:58,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba31c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:40:58, skipping insertion in model container [2023-08-26 07:40:58,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:40:58" (3/3) ... [2023-08-26 07:40:58,358 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_05-lockfuns_racefree.i [2023-08-26 07:40:58,374 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 07:40:58,374 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-26 07:40:58,374 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 07:40:58,433 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 07:40:58,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 134 transitions, 276 flow [2023-08-26 07:40:58,519 INFO L124 PetriNetUnfolderBase]: 19/184 cut-off events. [2023-08-26 07:40:58,519 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:40:58,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 184 events. 19/184 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 566 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 101. Up to 4 conditions per place. [2023-08-26 07:40:58,525 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 134 transitions, 276 flow [2023-08-26 07:40:58,531 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 134 transitions, 276 flow [2023-08-26 07:40:58,536 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:40:58,548 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 134 transitions, 276 flow [2023-08-26 07:40:58,554 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 124 places, 134 transitions, 276 flow [2023-08-26 07:40:58,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 134 transitions, 276 flow [2023-08-26 07:40:58,626 INFO L124 PetriNetUnfolderBase]: 19/184 cut-off events. [2023-08-26 07:40:58,626 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:40:58,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 184 events. 19/184 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 566 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 101. Up to 4 conditions per place. [2023-08-26 07:40:58,631 INFO L119 LiptonReduction]: Number of co-enabled transitions 5152 [2023-08-26 07:41:01,227 INFO L134 LiptonReduction]: Checked pairs total: 12321 [2023-08-26 07:41:01,228 INFO L136 LiptonReduction]: Total number of compositions: 102 [2023-08-26 07:41:01,247 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:41:01,256 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;@41e444e7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:41:01,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-26 07:41:01,260 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:41:01,260 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-26 07:41:01,260 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:41:01,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:01,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 07:41:01,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-26 07:41:01,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:01,265 INFO L85 PathProgramCache]: Analyzing trace with hash 15629248, now seen corresponding path program 1 times [2023-08-26 07:41:01,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:01,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278931450] [2023-08-26 07:41:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:01,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:01,432 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 07:41:01,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:01,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278931450] [2023-08-26 07:41:01,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278931450] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:01,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:01,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:41:01,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691128649] [2023-08-26 07:41:01,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:01,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:01,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:01,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:01,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:41:01,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 236 [2023-08-26 07:41:01,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 52 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states 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 07:41:01,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:01,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 236 [2023-08-26 07:41:01,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:01,591 INFO L124 PetriNetUnfolderBase]: 132/355 cut-off events. [2023-08-26 07:41:01,591 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:41:01,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 355 events. 132/355 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1758 event pairs, 0 based on Foata normal form. 50/333 useless extension candidates. Maximal degree in co-relation 622. Up to 280 conditions per place. [2023-08-26 07:41:01,598 INFO L140 encePairwiseOnDemand]: 222/236 looper letters, 36 selfloop transitions, 2 changer transitions 2/53 dead transitions. [2023-08-26 07:41:01,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 194 flow [2023-08-26 07:41:01,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:41:01,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:41:01,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2023-08-26 07:41:01,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5522598870056498 [2023-08-26 07:41:01,617 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2023-08-26 07:41:01,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2023-08-26 07:41:01,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:01,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2023-08-26 07:41:01,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:41:01,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states 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 07:41:01,628 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states 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 07:41:01,629 INFO L175 Difference]: Start difference. First operand has 44 places, 52 transitions, 112 flow. Second operand 3 states and 391 transitions. [2023-08-26 07:41:01,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 194 flow [2023-08-26 07:41:01,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 194 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:41:01,634 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 89 flow [2023-08-26 07:41:01,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=42, 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=89, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-08-26 07:41:01,638 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2023-08-26 07:41:01,638 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 89 flow [2023-08-26 07:41:01,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states 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 07:41:01,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:01,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:41:01,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 07:41:01,639 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-26 07:41:01,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:01,639 INFO L85 PathProgramCache]: Analyzing trace with hash 566615777, now seen corresponding path program 1 times [2023-08-26 07:41:01,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:01,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933673989] [2023-08-26 07:41:01,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:01,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:01,723 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 07:41:01,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:01,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933673989] [2023-08-26 07:41:01,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933673989] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:41:01,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100266769] [2023-08-26 07:41:01,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:01,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:41:01,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:41:01,726 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 07:41:01,727 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 07:41:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:01,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:41:01,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:41:01,838 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 07:41:01,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 07:41:01,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100266769] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:01,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 07:41:01,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-26 07:41:01,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956618678] [2023-08-26 07:41:01,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:01,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:01,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:01,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:01,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 07:41:01,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 236 [2023-08-26 07:41:01,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:41:01,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:01,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 236 [2023-08-26 07:41:01,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:01,963 INFO L124 PetriNetUnfolderBase]: 284/633 cut-off events. [2023-08-26 07:41:01,964 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-08-26 07:41:01,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1319 conditions, 633 events. 284/633 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3009 event pairs, 89 based on Foata normal form. 0/492 useless extension candidates. Maximal degree in co-relation 1303. Up to 361 conditions per place. [2023-08-26 07:41:01,967 INFO L140 encePairwiseOnDemand]: 227/236 looper letters, 49 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2023-08-26 07:41:01,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 59 transitions, 246 flow [2023-08-26 07:41:01,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:41:01,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:41:01,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 370 transitions. [2023-08-26 07:41:01,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225988700564972 [2023-08-26 07:41:01,969 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 370 transitions. [2023-08-26 07:41:01,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 370 transitions. [2023-08-26 07:41:01,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:01,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 370 transitions. [2023-08-26 07:41:01,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states 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 07:41:01,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states 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 07:41:01,974 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states 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 07:41:01,974 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 89 flow. Second operand 3 states and 370 transitions. [2023-08-26 07:41:01,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 59 transitions, 246 flow [2023-08-26 07:41:01,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 59 transitions, 240 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:41:01,976 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 123 flow [2023-08-26 07:41:01,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-26 07:41:01,978 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2023-08-26 07:41:01,978 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 123 flow [2023-08-26 07:41:01,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:41:01,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:01,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:41:01,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 07:41:02,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:41:02,184 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-26 07:41:02,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:02,185 INFO L85 PathProgramCache]: Analyzing trace with hash 385220405, now seen corresponding path program 1 times [2023-08-26 07:41:02,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:02,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922635365] [2023-08-26 07:41:02,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:02,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:02,266 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 07:41:02,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:02,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922635365] [2023-08-26 07:41:02,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922635365] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:41:02,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533394440] [2023-08-26 07:41:02,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:02,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:41:02,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:41:02,269 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 07:41:02,271 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 07:41:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:02,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:41:02,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:41:02,365 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 07:41:02,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:41:02,386 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 07:41:02,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533394440] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:41:02,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:41:02,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:41:02,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592556692] [2023-08-26 07:41:02,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:41:02,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:41:02,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:02,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:41:02,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:41:02,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 236 [2023-08-26 07:41:02,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 123 flow. Second operand has 7 states, 7 states have (on average 113.28571428571429) internal successors, (793), 7 states have internal predecessors, (793), 0 states have call successors, (0), 0 states 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 07:41:02,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:02,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 236 [2023-08-26 07:41:02,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:02,433 INFO L124 PetriNetUnfolderBase]: 24/85 cut-off events. [2023-08-26 07:41:02,434 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-08-26 07:41:02,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 85 events. 24/85 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 167 event pairs, 11 based on Foata normal form. 13/96 useless extension candidates. Maximal degree in co-relation 177. Up to 50 conditions per place. [2023-08-26 07:41:02,434 INFO L140 encePairwiseOnDemand]: 233/236 looper letters, 21 selfloop transitions, 2 changer transitions 6/37 dead transitions. [2023-08-26 07:41:02,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 167 flow [2023-08-26 07:41:02,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:41:02,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:41:02,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 474 transitions. [2023-08-26 07:41:02,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5021186440677966 [2023-08-26 07:41:02,437 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 474 transitions. [2023-08-26 07:41:02,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 474 transitions. [2023-08-26 07:41:02,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:02,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 474 transitions. [2023-08-26 07:41:02,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states 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 07:41:02,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states 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 07:41:02,441 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states 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 07:41:02,441 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 123 flow. Second operand 4 states and 474 transitions. [2023-08-26 07:41:02,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 167 flow [2023-08-26 07:41:02,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 37 transitions, 137 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 07:41:02,442 INFO L231 Difference]: Finished difference. Result has 30 places, 21 transitions, 51 flow [2023-08-26 07:41:02,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=51, PETRI_PLACES=30, PETRI_TRANSITIONS=21} [2023-08-26 07:41:02,444 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -14 predicate places. [2023-08-26 07:41:02,444 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 51 flow [2023-08-26 07:41:02,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.28571428571429) internal successors, (793), 7 states have internal predecessors, (793), 0 states have call successors, (0), 0 states 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 07:41:02,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:02,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:41:02,453 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 07:41:02,650 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,SelfDestructingSolverStorable2 [2023-08-26 07:41:02,650 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-26 07:41:02,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:02,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1994273201, now seen corresponding path program 1 times [2023-08-26 07:41:02,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:02,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046914845] [2023-08-26 07:41:02,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:02,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:02,696 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 07:41:02,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:02,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046914845] [2023-08-26 07:41:02,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046914845] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:02,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:02,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:41:02,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069943785] [2023-08-26 07:41:02,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:02,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:02,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:02,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:02,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:41:02,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 236 [2023-08-26 07:41:02,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 51 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:41:02,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:02,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 236 [2023-08-26 07:41:02,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:02,731 INFO L124 PetriNetUnfolderBase]: 26/75 cut-off events. [2023-08-26 07:41:02,731 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-26 07:41:02,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 75 events. 26/75 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 122 event pairs, 24 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 150. Up to 66 conditions per place. [2023-08-26 07:41:02,732 INFO L140 encePairwiseOnDemand]: 233/236 looper letters, 17 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2023-08-26 07:41:02,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 22 transitions, 93 flow [2023-08-26 07:41:02,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:41:02,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:41:02,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 326 transitions. [2023-08-26 07:41:02,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4604519774011299 [2023-08-26 07:41:02,734 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 326 transitions. [2023-08-26 07:41:02,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 326 transitions. [2023-08-26 07:41:02,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:02,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 326 transitions. [2023-08-26 07:41:02,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states 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 07:41:02,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states 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 07:41:02,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states 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 07:41:02,737 INFO L175 Difference]: Start difference. First operand has 30 places, 21 transitions, 51 flow. Second operand 3 states and 326 transitions. [2023-08-26 07:41:02,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 22 transitions, 93 flow [2023-08-26 07:41:02,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 89 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:41:02,738 INFO L231 Difference]: Finished difference. Result has 26 places, 20 transitions, 50 flow [2023-08-26 07:41:02,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=26, PETRI_TRANSITIONS=20} [2023-08-26 07:41:02,739 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -18 predicate places. [2023-08-26 07:41:02,739 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 20 transitions, 50 flow [2023-08-26 07:41:02,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:41:02,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:02,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:41:02,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 07:41:02,740 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-26 07:41:02,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:02,740 INFO L85 PathProgramCache]: Analyzing trace with hash 909751297, now seen corresponding path program 1 times [2023-08-26 07:41:02,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:02,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625382260] [2023-08-26 07:41:02,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:02,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:02,781 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 07:41:02,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:02,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625382260] [2023-08-26 07:41:02,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625382260] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:02,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:02,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:41:02,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252159518] [2023-08-26 07:41:02,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:02,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:02,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:02,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:02,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:41:02,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 236 [2023-08-26 07:41:02,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states 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 07:41:02,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:02,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 236 [2023-08-26 07:41:02,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:02,811 INFO L124 PetriNetUnfolderBase]: 24/72 cut-off events. [2023-08-26 07:41:02,811 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:41:02,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 72 events. 24/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 113 event pairs, 22 based on Foata normal form. 3/75 useless extension candidates. Maximal degree in co-relation 149. Up to 61 conditions per place. [2023-08-26 07:41:02,812 INFO L140 encePairwiseOnDemand]: 234/236 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2023-08-26 07:41:02,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 89 flow [2023-08-26 07:41:02,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:41:02,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:41:02,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2023-08-26 07:41:02,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590395480225989 [2023-08-26 07:41:02,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 325 transitions. [2023-08-26 07:41:02,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 325 transitions. [2023-08-26 07:41:02,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:02,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 325 transitions. [2023-08-26 07:41:02,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states 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 07:41:02,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states 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 07:41:02,817 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states 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 07:41:02,817 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 50 flow. Second operand 3 states and 325 transitions. [2023-08-26 07:41:02,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 89 flow [2023-08-26 07:41:02,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 21 transitions, 85 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:41:02,818 INFO L231 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2023-08-26 07:41:02,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2023-08-26 07:41:02,819 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -19 predicate places. [2023-08-26 07:41:02,819 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2023-08-26 07:41:02,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states 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 07:41:02,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 11 remaining) [2023-08-26 07:41:02,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2023-08-26 07:41:02,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2023-08-26 07:41:02,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2023-08-26 07:41:02,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2023-08-26 07:41:02,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2023-08-26 07:41:02,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2023-08-26 07:41:02,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (3 of 11 remaining) [2023-08-26 07:41:02,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2023-08-26 07:41:02,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2023-08-26 07:41:02,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2023-08-26 07:41:02,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 07:41:02,824 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-26 07:41:02,826 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-26 07:41:02,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 134 transitions, 276 flow [2023-08-26 07:41:02,856 INFO L124 PetriNetUnfolderBase]: 19/184 cut-off events. [2023-08-26 07:41:02,857 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:41:02,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 184 events. 19/184 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 566 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 101. Up to 4 conditions per place. [2023-08-26 07:41:02,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 134 transitions, 276 flow [2023-08-26 07:41:02,858 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 129 transitions, 263 flow [2023-08-26 07:41:02,859 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:41:02,859 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 129 transitions, 263 flow [2023-08-26 07:41:02,859 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 129 transitions, 263 flow [2023-08-26 07:41:02,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 129 transitions, 263 flow [2023-08-26 07:41:02,894 INFO L124 PetriNetUnfolderBase]: 18/179 cut-off events. [2023-08-26 07:41:02,894 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:41:02,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 179 events. 18/179 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 557 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 101. Up to 4 conditions per place. [2023-08-26 07:41:02,897 INFO L119 LiptonReduction]: Number of co-enabled transitions 5152 [2023-08-26 07:41:04,979 INFO L134 LiptonReduction]: Checked pairs total: 10386 [2023-08-26 07:41:04,980 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-26 07:41:04,981 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 07:41:04,982 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;@41e444e7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:41:04,982 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 07:41:04,984 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:41:04,984 INFO L124 PetriNetUnfolderBase]: 1/22 cut-off events. [2023-08-26 07:41:04,985 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:41:04,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:04,985 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 07:41:04,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:41:04,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:04,985 INFO L85 PathProgramCache]: Analyzing trace with hash 750938065, now seen corresponding path program 1 times [2023-08-26 07:41:04,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:04,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637739971] [2023-08-26 07:41:04,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:04,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:41:05,014 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 07:41:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:41:05,047 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 07:41:05,048 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 07:41:05,048 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 07:41:05,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 07:41:05,048 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 07:41:05,049 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-26 07:41:05,049 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 07:41:05,049 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 07:41:05,079 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 07:41:05,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 182 transitions, 382 flow [2023-08-26 07:41:05,117 INFO L124 PetriNetUnfolderBase]: 34/313 cut-off events. [2023-08-26 07:41:05,117 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:41:05,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 313 events. 34/313 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1144 event pairs, 0 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 186. Up to 8 conditions per place. [2023-08-26 07:41:05,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 182 transitions, 382 flow [2023-08-26 07:41:05,121 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 182 transitions, 382 flow [2023-08-26 07:41:05,121 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:41:05,121 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 182 transitions, 382 flow [2023-08-26 07:41:05,122 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 182 transitions, 382 flow [2023-08-26 07:41:05,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 182 transitions, 382 flow [2023-08-26 07:41:05,151 INFO L124 PetriNetUnfolderBase]: 34/313 cut-off events. [2023-08-26 07:41:05,151 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:41:05,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 313 events. 34/313 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1144 event pairs, 0 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 186. Up to 8 conditions per place. [2023-08-26 07:41:05,160 INFO L119 LiptonReduction]: Number of co-enabled transitions 15548 [2023-08-26 07:41:07,351 INFO L134 LiptonReduction]: Checked pairs total: 48808 [2023-08-26 07:41:07,351 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-26 07:41:07,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:41:07,354 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;@41e444e7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:41:07,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-08-26 07:41:07,355 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:41:07,355 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-26 07:41:07,355 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:41:07,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:07,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 07:41:07,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-08-26 07:41:07,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:07,356 INFO L85 PathProgramCache]: Analyzing trace with hash 29424109, now seen corresponding path program 1 times [2023-08-26 07:41:07,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:07,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042365448] [2023-08-26 07:41:07,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:07,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:07,394 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 07:41:07,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:07,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042365448] [2023-08-26 07:41:07,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042365448] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:07,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:07,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:41:07,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217622687] [2023-08-26 07:41:07,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:07,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:07,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:07,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:07,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:41:07,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 301 [2023-08-26 07:41:07,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 85 transitions, 188 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 07:41:07,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:07,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 301 [2023-08-26 07:41:07,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:07,855 INFO L124 PetriNetUnfolderBase]: 2702/5643 cut-off events. [2023-08-26 07:41:07,855 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-08-26 07:41:07,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10061 conditions, 5643 events. 2702/5643 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 43683 event pairs, 2394 based on Foata normal form. 690/5479 useless extension candidates. Maximal degree in co-relation 6675. Up to 4335 conditions per place. [2023-08-26 07:41:07,887 INFO L140 encePairwiseOnDemand]: 282/301 looper letters, 47 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-08-26 07:41:07,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 81 transitions, 278 flow [2023-08-26 07:41:07,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:41:07,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:41:07,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 525 transitions. [2023-08-26 07:41:07,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5813953488372093 [2023-08-26 07:41:07,889 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 525 transitions. [2023-08-26 07:41:07,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 525 transitions. [2023-08-26 07:41:07,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:07,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 525 transitions. [2023-08-26 07:41:07,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 07:41:07,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states 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 07:41:07,893 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states 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 07:41:07,894 INFO L175 Difference]: Start difference. First operand has 73 places, 85 transitions, 188 flow. Second operand 3 states and 525 transitions. [2023-08-26 07:41:07,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 81 transitions, 278 flow [2023-08-26 07:41:07,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 81 transitions, 278 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:41:07,898 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 168 flow [2023-08-26 07:41:07,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2023-08-26 07:41:07,899 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 2 predicate places. [2023-08-26 07:41:07,899 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 168 flow [2023-08-26 07:41:07,902 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 07:41:07,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:07,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:41:07,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 07:41:07,903 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-08-26 07:41:07,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:07,903 INFO L85 PathProgramCache]: Analyzing trace with hash 774174725, now seen corresponding path program 1 times [2023-08-26 07:41:07,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:07,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189268088] [2023-08-26 07:41:07,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:07,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:07,929 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 07:41:07,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:07,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189268088] [2023-08-26 07:41:07,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189268088] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:07,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:07,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:41:07,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358697384] [2023-08-26 07:41:07,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:07,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:07,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:07,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:07,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:41:07,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 301 [2023-08-26 07:41:07,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states 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 07:41:07,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:07,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 301 [2023-08-26 07:41:07,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:09,684 INFO L124 PetriNetUnfolderBase]: 14066/23845 cut-off events. [2023-08-26 07:41:09,684 INFO L125 PetriNetUnfolderBase]: For 1079/1079 co-relation queries the response was YES. [2023-08-26 07:41:09,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47422 conditions, 23845 events. 14066/23845 cut-off events. For 1079/1079 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 178875 event pairs, 5076 based on Foata normal form. 0/18970 useless extension candidates. Maximal degree in co-relation 47306. Up to 11897 conditions per place. [2023-08-26 07:41:09,799 INFO L140 encePairwiseOnDemand]: 282/301 looper letters, 93 selfloop transitions, 14 changer transitions 0/120 dead transitions. [2023-08-26 07:41:09,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 120 transitions, 500 flow [2023-08-26 07:41:09,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:41:09,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:41:09,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-26 07:41:09,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5603543743078627 [2023-08-26 07:41:09,802 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-26 07:41:09,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-26 07:41:09,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:09,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-26 07:41:09,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states 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 07:41:09,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states 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 07:41:09,805 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states 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 07:41:09,805 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 168 flow. Second operand 3 states and 506 transitions. [2023-08-26 07:41:09,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 120 transitions, 500 flow [2023-08-26 07:41:09,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 120 transitions, 497 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:41:09,812 INFO L231 Difference]: Finished difference. Result has 78 places, 84 transitions, 288 flow [2023-08-26 07:41:09,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=78, PETRI_TRANSITIONS=84} [2023-08-26 07:41:09,813 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 5 predicate places. [2023-08-26 07:41:09,814 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 84 transitions, 288 flow [2023-08-26 07:41:09,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states 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 07:41:09,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:09,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:41:09,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 07:41:09,814 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-08-26 07:41:09,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:09,815 INFO L85 PathProgramCache]: Analyzing trace with hash -567363039, now seen corresponding path program 1 times [2023-08-26 07:41:09,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:09,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894567048] [2023-08-26 07:41:09,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:09,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:09,856 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 07:41:09,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:09,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894567048] [2023-08-26 07:41:09,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894567048] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:41:09,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248355599] [2023-08-26 07:41:09,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:09,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:41:09,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:41:09,858 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 07:41:09,861 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 07:41:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:09,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:41:09,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:41:09,935 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 07:41:09,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:41:09,948 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 07:41:09,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248355599] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:41:09,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:41:09,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:41:09,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074670675] [2023-08-26 07:41:09,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:41:09,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:41:09,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:09,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:41:09,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:41:09,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 301 [2023-08-26 07:41:09,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 84 transitions, 288 flow. Second operand has 7 states, 7 states have (on average 153.28571428571428) internal successors, (1073), 7 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states 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 07:41:09,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:09,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 301 [2023-08-26 07:41:09,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:10,145 INFO L124 PetriNetUnfolderBase]: 935/2077 cut-off events. [2023-08-26 07:41:10,145 INFO L125 PetriNetUnfolderBase]: For 1136/1202 co-relation queries the response was YES. [2023-08-26 07:41:10,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4968 conditions, 2077 events. 935/2077 cut-off events. For 1136/1202 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 14063 event pairs, 57 based on Foata normal form. 249/2237 useless extension candidates. Maximal degree in co-relation 1328. Up to 1173 conditions per place. [2023-08-26 07:41:10,157 INFO L140 encePairwiseOnDemand]: 298/301 looper letters, 61 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2023-08-26 07:41:10,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 101 transitions, 458 flow [2023-08-26 07:41:10,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 07:41:10,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 07:41:10,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 815 transitions. [2023-08-26 07:41:10,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5415282392026578 [2023-08-26 07:41:10,159 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 815 transitions. [2023-08-26 07:41:10,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 815 transitions. [2023-08-26 07:41:10,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:10,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 815 transitions. [2023-08-26 07:41:10,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states 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 07:41:10,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 301.0) internal successors, (1806), 6 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states 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 07:41:10,164 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 301.0) internal successors, (1806), 6 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states 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 07:41:10,164 INFO L175 Difference]: Start difference. First operand has 78 places, 84 transitions, 288 flow. Second operand 5 states and 815 transitions. [2023-08-26 07:41:10,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 101 transitions, 458 flow [2023-08-26 07:41:10,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 101 transitions, 420 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 07:41:10,168 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 210 flow [2023-08-26 07:41:10,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2023-08-26 07:41:10,169 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -7 predicate places. [2023-08-26 07:41:10,169 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 210 flow [2023-08-26 07:41:10,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.28571428571428) internal successors, (1073), 7 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states 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 07:41:10,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:10,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:41:10,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 07:41:10,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:41:10,376 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-08-26 07:41:10,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:10,376 INFO L85 PathProgramCache]: Analyzing trace with hash 613865270, now seen corresponding path program 1 times [2023-08-26 07:41:10,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:10,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060681123] [2023-08-26 07:41:10,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:10,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:10,396 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 07:41:10,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:10,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060681123] [2023-08-26 07:41:10,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060681123] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:10,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:10,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:41:10,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247215832] [2023-08-26 07:41:10,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:10,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:10,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:10,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:10,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:41:10,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 301 [2023-08-26 07:41:10,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:41:10,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:10,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 301 [2023-08-26 07:41:10,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:10,710 INFO L124 PetriNetUnfolderBase]: 2185/3877 cut-off events. [2023-08-26 07:41:10,710 INFO L125 PetriNetUnfolderBase]: For 2038/2062 co-relation queries the response was YES. [2023-08-26 07:41:10,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9582 conditions, 3877 events. 2185/3877 cut-off events. For 2038/2062 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 23062 event pairs, 1568 based on Foata normal form. 0/3450 useless extension candidates. Maximal degree in co-relation 8547. Up to 3188 conditions per place. [2023-08-26 07:41:10,732 INFO L140 encePairwiseOnDemand]: 293/301 looper letters, 75 selfloop transitions, 10 changer transitions 0/96 dead transitions. [2023-08-26 07:41:10,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 96 transitions, 477 flow [2023-08-26 07:41:10,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:41:10,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:41:10,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2023-08-26 07:41:10,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5071982281284607 [2023-08-26 07:41:10,734 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2023-08-26 07:41:10,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2023-08-26 07:41:10,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:10,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2023-08-26 07:41:10,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states 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 07:41:10,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states 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 07:41:10,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states 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 07:41:10,737 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 210 flow. Second operand 3 states and 458 transitions. [2023-08-26 07:41:10,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 96 transitions, 477 flow [2023-08-26 07:41:10,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 96 transitions, 466 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-26 07:41:10,740 INFO L231 Difference]: Finished difference. Result has 67 places, 74 transitions, 289 flow [2023-08-26 07:41:10,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=67, PETRI_TRANSITIONS=74} [2023-08-26 07:41:10,741 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -6 predicate places. [2023-08-26 07:41:10,741 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 74 transitions, 289 flow [2023-08-26 07:41:10,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:41:10,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:10,742 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:41:10,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 07:41:10,742 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-08-26 07:41:10,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:10,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1595189234, now seen corresponding path program 1 times [2023-08-26 07:41:10,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:10,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488036227] [2023-08-26 07:41:10,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:10,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:10,764 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 07:41:10,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:10,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488036227] [2023-08-26 07:41:10,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488036227] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:10,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:10,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:41:10,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323980849] [2023-08-26 07:41:10,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:10,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:10,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:10,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:10,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:41:10,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 301 [2023-08-26 07:41:10,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 74 transitions, 289 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states 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 07:41:10,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:10,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 301 [2023-08-26 07:41:10,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:11,082 INFO L124 PetriNetUnfolderBase]: 2224/3979 cut-off events. [2023-08-26 07:41:11,082 INFO L125 PetriNetUnfolderBase]: For 2131/2152 co-relation queries the response was YES. [2023-08-26 07:41:11,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10199 conditions, 3979 events. 2224/3979 cut-off events. For 2131/2152 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 24032 event pairs, 1591 based on Foata normal form. 6/3645 useless extension candidates. Maximal degree in co-relation 9213. Up to 3334 conditions per place. [2023-08-26 07:41:11,101 INFO L140 encePairwiseOnDemand]: 293/301 looper letters, 78 selfloop transitions, 12 changer transitions 0/101 dead transitions. [2023-08-26 07:41:11,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 101 transitions, 571 flow [2023-08-26 07:41:11,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:41:11,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:41:11,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-08-26 07:41:11,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027685492801772 [2023-08-26 07:41:11,103 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-08-26 07:41:11,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-08-26 07:41:11,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:11,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-08-26 07:41:11,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states 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 07:41:11,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states 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 07:41:11,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states 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 07:41:11,106 INFO L175 Difference]: Start difference. First operand has 67 places, 74 transitions, 289 flow. Second operand 3 states and 454 transitions. [2023-08-26 07:41:11,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 101 transitions, 571 flow [2023-08-26 07:41:11,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 101 transitions, 543 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:41:11,112 INFO L231 Difference]: Finished difference. Result has 69 places, 82 transitions, 367 flow [2023-08-26 07:41:11,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=367, PETRI_PLACES=69, PETRI_TRANSITIONS=82} [2023-08-26 07:41:11,112 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -4 predicate places. [2023-08-26 07:41:11,112 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 82 transitions, 367 flow [2023-08-26 07:41:11,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states 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 07:41:11,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:11,113 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 07:41:11,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 07:41:11,113 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-08-26 07:41:11,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:11,113 INFO L85 PathProgramCache]: Analyzing trace with hash 355972034, now seen corresponding path program 1 times [2023-08-26 07:41:11,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:11,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620327820] [2023-08-26 07:41:11,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:11,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:11,205 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 07:41:11,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:11,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620327820] [2023-08-26 07:41:11,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620327820] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:11,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:11,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 07:41:11,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357911775] [2023-08-26 07:41:11,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:11,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 07:41:11,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:11,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 07:41:11,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 07:41:11,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 301 [2023-08-26 07:41:11,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 82 transitions, 367 flow. Second operand has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states 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 07:41:11,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:11,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 301 [2023-08-26 07:41:11,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:11,263 INFO L124 PetriNetUnfolderBase]: 118/428 cut-off events. [2023-08-26 07:41:11,263 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2023-08-26 07:41:11,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 428 events. 118/428 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1817 event pairs, 12 based on Foata normal form. 57/485 useless extension candidates. Maximal degree in co-relation 568. Up to 250 conditions per place. [2023-08-26 07:41:11,265 INFO L140 encePairwiseOnDemand]: 296/301 looper letters, 26 selfloop transitions, 5 changer transitions 0/52 dead transitions. [2023-08-26 07:41:11,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 52 transitions, 246 flow [2023-08-26 07:41:11,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:41:11,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:41:11,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 555 transitions. [2023-08-26 07:41:11,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46096345514950166 [2023-08-26 07:41:11,267 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 555 transitions. [2023-08-26 07:41:11,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 555 transitions. [2023-08-26 07:41:11,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:11,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 555 transitions. [2023-08-26 07:41:11,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:41:11,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states 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 07:41:11,270 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states 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 07:41:11,270 INFO L175 Difference]: Start difference. First operand has 69 places, 82 transitions, 367 flow. Second operand 4 states and 555 transitions. [2023-08-26 07:41:11,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 52 transitions, 246 flow [2023-08-26 07:41:11,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 190 flow, removed 14 selfloop flow, removed 8 redundant places. [2023-08-26 07:41:11,272 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 121 flow [2023-08-26 07:41:11,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2023-08-26 07:41:11,273 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -15 predicate places. [2023-08-26 07:41:11,273 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 121 flow [2023-08-26 07:41:11,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states 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 07:41:11,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:11,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:41:11,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 07:41:11,274 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-08-26 07:41:11,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:11,274 INFO L85 PathProgramCache]: Analyzing trace with hash -45556878, now seen corresponding path program 1 times [2023-08-26 07:41:11,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:11,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541533915] [2023-08-26 07:41:11,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:11,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:11,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:41:11,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:11,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541533915] [2023-08-26 07:41:11,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541533915] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:11,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:11,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:41:11,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102049098] [2023-08-26 07:41:11,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:11,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:11,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:11,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:11,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:41:11,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 301 [2023-08-26 07:41:11,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states 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 07:41:11,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:11,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 301 [2023-08-26 07:41:11,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:11,358 INFO L124 PetriNetUnfolderBase]: 160/460 cut-off events. [2023-08-26 07:41:11,358 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2023-08-26 07:41:11,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1002 conditions, 460 events. 160/460 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1864 event pairs, 146 based on Foata normal form. 0/453 useless extension candidates. Maximal degree in co-relation 381. Up to 353 conditions per place. [2023-08-26 07:41:11,359 INFO L140 encePairwiseOnDemand]: 298/301 looper letters, 35 selfloop transitions, 2 changer transitions 3/51 dead transitions. [2023-08-26 07:41:11,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 51 transitions, 216 flow [2023-08-26 07:41:11,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:41:11,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:41:11,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2023-08-26 07:41:11,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4750830564784053 [2023-08-26 07:41:11,361 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2023-08-26 07:41:11,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2023-08-26 07:41:11,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:11,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2023-08-26 07:41:11,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states 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 07:41:11,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states 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 07:41:11,364 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states 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 07:41:11,364 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 121 flow. Second operand 3 states and 429 transitions. [2023-08-26 07:41:11,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 51 transitions, 216 flow [2023-08-26 07:41:11,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 211 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:41:11,365 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 111 flow [2023-08-26 07:41:11,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2023-08-26 07:41:11,366 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -16 predicate places. [2023-08-26 07:41:11,366 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 111 flow [2023-08-26 07:41:11,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states 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 07:41:11,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:11,367 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] [2023-08-26 07:41:11,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 07:41:11,367 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-08-26 07:41:11,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:11,367 INFO L85 PathProgramCache]: Analyzing trace with hash 984737923, now seen corresponding path program 1 times [2023-08-26 07:41:11,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:11,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465842499] [2023-08-26 07:41:11,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:11,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:11,389 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 07:41:11,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:11,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465842499] [2023-08-26 07:41:11,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465842499] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:11,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:11,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:41:11,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483518505] [2023-08-26 07:41:11,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:11,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:11,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:11,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:11,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:41:11,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 301 [2023-08-26 07:41:11,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 07:41:11,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:11,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 301 [2023-08-26 07:41:11,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:11,437 INFO L124 PetriNetUnfolderBase]: 117/339 cut-off events. [2023-08-26 07:41:11,438 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2023-08-26 07:41:11,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 746 conditions, 339 events. 117/339 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1273 event pairs, 113 based on Foata normal form. 6/344 useless extension candidates. Maximal degree in co-relation 463. Up to 272 conditions per place. [2023-08-26 07:41:11,438 INFO L140 encePairwiseOnDemand]: 299/301 looper letters, 0 selfloop transitions, 0 changer transitions 45/45 dead transitions. [2023-08-26 07:41:11,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 45 transitions, 183 flow [2023-08-26 07:41:11,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:41:11,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:41:11,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-08-26 07:41:11,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4695459579180509 [2023-08-26 07:41:11,440 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-08-26 07:41:11,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-08-26 07:41:11,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:11,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-08-26 07:41:11,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:41:11,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states 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 07:41:11,443 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states 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 07:41:11,443 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 111 flow. Second operand 3 states and 424 transitions. [2023-08-26 07:41:11,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 45 transitions, 183 flow [2023-08-26 07:41:11,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 45 transitions, 179 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:41:11,444 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2023-08-26 07:41:11,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2023-08-26 07:41:11,445 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -20 predicate places. [2023-08-26 07:41:11,445 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2023-08-26 07:41:11,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 07:41:11,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (14 of 15 remaining) [2023-08-26 07:41:11,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2023-08-26 07:41:11,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2023-08-26 07:41:11,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2023-08-26 07:41:11,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2023-08-26 07:41:11,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2023-08-26 07:41:11,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2023-08-26 07:41:11,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2023-08-26 07:41:11,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2023-08-26 07:41:11,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (5 of 15 remaining) [2023-08-26 07:41:11,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2023-08-26 07:41:11,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2023-08-26 07:41:11,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2023-08-26 07:41:11,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2023-08-26 07:41:11,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2023-08-26 07:41:11,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 07:41:11,447 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:41:11,447 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-26 07:41:11,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 182 transitions, 382 flow [2023-08-26 07:41:11,473 INFO L124 PetriNetUnfolderBase]: 34/313 cut-off events. [2023-08-26 07:41:11,473 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:41:11,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 313 events. 34/313 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1144 event pairs, 0 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 186. Up to 8 conditions per place. [2023-08-26 07:41:11,474 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 182 transitions, 382 flow [2023-08-26 07:41:11,476 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 182 transitions, 382 flow [2023-08-26 07:41:11,476 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:41:11,476 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 182 transitions, 382 flow [2023-08-26 07:41:11,476 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 182 transitions, 382 flow [2023-08-26 07:41:11,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 182 transitions, 382 flow [2023-08-26 07:41:11,496 INFO L124 PetriNetUnfolderBase]: 34/313 cut-off events. [2023-08-26 07:41:11,496 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:41:11,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 313 events. 34/313 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1144 event pairs, 0 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 186. Up to 8 conditions per place. [2023-08-26 07:41:11,506 INFO L119 LiptonReduction]: Number of co-enabled transitions 15548 [2023-08-26 07:41:13,828 INFO L134 LiptonReduction]: Checked pairs total: 49396 [2023-08-26 07:41:13,828 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-26 07:41:13,830 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 07:41:13,830 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;@41e444e7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:41:13,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 07:41:13,835 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:41:13,835 INFO L124 PetriNetUnfolderBase]: 10/69 cut-off events. [2023-08-26 07:41:13,835 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 07:41:13,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:13,835 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 07:41:13,836 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:41:13,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:13,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1118110950, now seen corresponding path program 1 times [2023-08-26 07:41:13,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:13,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186963552] [2023-08-26 07:41:13,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:13,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:41:13,847 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 07:41:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:41:13,856 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 07:41:13,856 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 07:41:13,857 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 07:41:13,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 07:41:13,857 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 07:41:13,857 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-26 07:41:13,858 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 07:41:13,858 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 07:41:13,879 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 07:41:13,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 230 transitions, 490 flow [2023-08-26 07:41:13,934 INFO L124 PetriNetUnfolderBase]: 54/487 cut-off events. [2023-08-26 07:41:13,935 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 07:41:13,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 487 events. 54/487 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1968 event pairs, 1 based on Foata normal form. 0/401 useless extension candidates. Maximal degree in co-relation 321. Up to 16 conditions per place. [2023-08-26 07:41:13,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 230 transitions, 490 flow [2023-08-26 07:41:13,942 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 230 transitions, 490 flow [2023-08-26 07:41:13,943 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:41:13,943 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 230 transitions, 490 flow [2023-08-26 07:41:13,943 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 230 transitions, 490 flow [2023-08-26 07:41:13,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 230 transitions, 490 flow [2023-08-26 07:41:13,995 INFO L124 PetriNetUnfolderBase]: 54/487 cut-off events. [2023-08-26 07:41:13,996 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 07:41:14,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 487 events. 54/487 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1968 event pairs, 1 based on Foata normal form. 0/401 useless extension candidates. Maximal degree in co-relation 321. Up to 16 conditions per place. [2023-08-26 07:41:14,012 INFO L119 LiptonReduction]: Number of co-enabled transitions 30084 [2023-08-26 07:41:16,375 INFO L134 LiptonReduction]: Checked pairs total: 104864 [2023-08-26 07:41:16,376 INFO L136 LiptonReduction]: Total number of compositions: 144 [2023-08-26 07:41:16,377 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:41:16,377 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;@41e444e7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:41:16,377 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-26 07:41:16,378 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:41:16,378 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-26 07:41:16,378 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:41:16,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:16,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 07:41:16,379 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:41:16,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:16,379 INFO L85 PathProgramCache]: Analyzing trace with hash 46078062, now seen corresponding path program 1 times [2023-08-26 07:41:16,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:16,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395393971] [2023-08-26 07:41:16,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:16,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:16,396 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 07:41:16,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:16,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395393971] [2023-08-26 07:41:16,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395393971] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:16,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:16,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:41:16,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707835120] [2023-08-26 07:41:16,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:16,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:16,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:16,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:16,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:41:16,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 374 [2023-08-26 07:41:16,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 116 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states 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 07:41:16,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:16,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 374 [2023-08-26 07:41:16,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:20,850 INFO L124 PetriNetUnfolderBase]: 43367/72210 cut-off events. [2023-08-26 07:41:20,850 INFO L125 PetriNetUnfolderBase]: For 1359/1359 co-relation queries the response was YES. [2023-08-26 07:41:20,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133880 conditions, 72210 events. 43367/72210 cut-off events. For 1359/1359 co-relation queries the response was YES. Maximal size of possible extension queue 1909. Compared 647832 event pairs, 41684 based on Foata normal form. 8946/72903 useless extension candidates. Maximal degree in co-relation 55956. Up to 60642 conditions per place. [2023-08-26 07:41:21,250 INFO L140 encePairwiseOnDemand]: 349/374 looper letters, 58 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2023-08-26 07:41:21,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 105 transitions, 360 flow [2023-08-26 07:41:21,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:41:21,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:41:21,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 662 transitions. [2023-08-26 07:41:21,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5900178253119429 [2023-08-26 07:41:21,257 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 662 transitions. [2023-08-26 07:41:21,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 662 transitions. [2023-08-26 07:41:21,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:21,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 662 transitions. [2023-08-26 07:41:21,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states 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 07:41:21,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:41:21,262 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:41:21,262 INFO L175 Difference]: Start difference. First operand has 99 places, 116 transitions, 262 flow. Second operand 3 states and 662 transitions. [2023-08-26 07:41:21,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 105 transitions, 360 flow [2023-08-26 07:41:21,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 105 transitions, 360 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:41:21,265 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 228 flow [2023-08-26 07:41:21,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2023-08-26 07:41:21,266 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 1 predicate places. [2023-08-26 07:41:21,266 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 228 flow [2023-08-26 07:41:21,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states 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 07:41:21,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:21,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:41:21,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 07:41:21,267 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:41:21,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:21,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1778554059, now seen corresponding path program 1 times [2023-08-26 07:41:21,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:21,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682478268] [2023-08-26 07:41:21,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:21,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:21,293 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 07:41:21,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:21,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682478268] [2023-08-26 07:41:21,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682478268] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:21,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:21,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:41:21,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764509783] [2023-08-26 07:41:21,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:21,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:21,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:21,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:21,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:41:21,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 374 [2023-08-26 07:41:21,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states 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 07:41:21,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:21,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 374 [2023-08-26 07:41:21,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:42:00,364 INFO L124 PetriNetUnfolderBase]: 469001/686264 cut-off events. [2023-08-26 07:42:00,364 INFO L125 PetriNetUnfolderBase]: For 28435/28435 co-relation queries the response was YES. [2023-08-26 07:42:01,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1365771 conditions, 686264 events. 469001/686264 cut-off events. For 28435/28435 co-relation queries the response was YES. Maximal size of possible extension queue 11290. Compared 6068082 event pairs, 193180 based on Foata normal form. 0/565099 useless extension candidates. Maximal degree in co-relation 1365654. Up to 333755 conditions per place. [2023-08-26 07:42:04,022 INFO L140 encePairwiseOnDemand]: 347/374 looper letters, 125 selfloop transitions, 20 changer transitions 0/162 dead transitions. [2023-08-26 07:42:04,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 162 transitions, 682 flow [2023-08-26 07:42:04,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:42:04,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:42:04,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 630 transitions. [2023-08-26 07:42:04,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614973262032086 [2023-08-26 07:42:04,024 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 630 transitions. [2023-08-26 07:42:04,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 630 transitions. [2023-08-26 07:42:04,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:42:04,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 630 transitions. [2023-08-26 07:42:04,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states 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 07:42:04,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:42:04,028 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:42:04,028 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 228 flow. Second operand 3 states and 630 transitions. [2023-08-26 07:42:04,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 162 transitions, 682 flow [2023-08-26 07:42:04,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 162 transitions, 679 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:42:04,062 INFO L231 Difference]: Finished difference. Result has 103 places, 114 transitions, 400 flow [2023-08-26 07:42:04,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=103, PETRI_TRANSITIONS=114} [2023-08-26 07:42:04,063 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 4 predicate places. [2023-08-26 07:42:04,063 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 114 transitions, 400 flow [2023-08-26 07:42:04,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states 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 07:42:04,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:42:04,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:42:04,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 07:42:04,064 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:42:04,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:42:04,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1182608974, now seen corresponding path program 1 times [2023-08-26 07:42:04,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:42:04,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508431999] [2023-08-26 07:42:04,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:42:04,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:42:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:42:04,088 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 07:42:04,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:42:04,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508431999] [2023-08-26 07:42:04,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508431999] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:42:04,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731995804] [2023-08-26 07:42:04,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:42:04,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:42:04,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:42:04,090 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 07:42:04,092 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 07:42:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:42:04,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:42:04,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:42:04,181 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 07:42:04,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:42:04,199 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 07:42:04,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731995804] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:42:04,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:42:04,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:42:04,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758303376] [2023-08-26 07:42:04,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:42:04,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:42:04,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:42:04,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:42:04,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:42:04,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 374 [2023-08-26 07:42:04,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 114 transitions, 400 flow. Second operand has 7 states, 7 states have (on average 193.28571428571428) internal successors, (1353), 7 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:42:04,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:42:04,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 374 [2023-08-26 07:42:04,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:42:07,615 INFO L124 PetriNetUnfolderBase]: 30839/55736 cut-off events. [2023-08-26 07:42:07,615 INFO L125 PetriNetUnfolderBase]: For 33931/35270 co-relation queries the response was YES. [2023-08-26 07:42:07,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132496 conditions, 55736 events. 30839/55736 cut-off events. For 33931/35270 co-relation queries the response was YES. Maximal size of possible extension queue 1677. Compared 538561 event pairs, 5326 based on Foata normal form. 4692/57070 useless extension candidates. Maximal degree in co-relation 7122. Up to 29179 conditions per place. [2023-08-26 07:42:07,903 INFO L140 encePairwiseOnDemand]: 371/374 looper letters, 111 selfloop transitions, 4 changer transitions 0/169 dead transitions. [2023-08-26 07:42:07,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 169 transitions, 783 flow [2023-08-26 07:42:07,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:42:07,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:42:07,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1250 transitions. [2023-08-26 07:42:07,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570409982174688 [2023-08-26 07:42:07,906 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1250 transitions. [2023-08-26 07:42:07,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1250 transitions. [2023-08-26 07:42:07,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:42:07,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1250 transitions. [2023-08-26 07:42:07,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.33333333333334) internal successors, (1250), 6 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states 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 07:42:07,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 374.0) internal successors, (2618), 7 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states 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 07:42:07,917 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 374.0) internal successors, (2618), 7 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states 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 07:42:07,918 INFO L175 Difference]: Start difference. First operand has 103 places, 114 transitions, 400 flow. Second operand 6 states and 1250 transitions. [2023-08-26 07:42:07,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 169 transitions, 783 flow [2023-08-26 07:42:07,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 169 transitions, 717 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-26 07:42:07,967 INFO L231 Difference]: Finished difference. Result has 93 places, 97 transitions, 309 flow [2023-08-26 07:42:07,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=309, PETRI_PLACES=93, PETRI_TRANSITIONS=97} [2023-08-26 07:42:07,968 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -6 predicate places. [2023-08-26 07:42:07,968 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 97 transitions, 309 flow [2023-08-26 07:42:07,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 193.28571428571428) internal successors, (1353), 7 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:42:07,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:42:07,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:42:07,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-26 07:42:08,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-26 07:42:08,174 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:42:08,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:42:08,174 INFO L85 PathProgramCache]: Analyzing trace with hash -869030286, now seen corresponding path program 1 times [2023-08-26 07:42:08,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:42:08,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950970613] [2023-08-26 07:42:08,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:42:08,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:42:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:42:08,195 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 07:42:08,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:42:08,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950970613] [2023-08-26 07:42:08,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950970613] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:42:08,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:42:08,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:42:08,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309297468] [2023-08-26 07:42:08,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:42:08,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:42:08,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:42:08,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:42:08,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:42:08,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 374 [2023-08-26 07:42:08,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 97 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states 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 07:42:08,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:42:08,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 374 [2023-08-26 07:42:08,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:42:15,284 INFO L124 PetriNetUnfolderBase]: 84761/124650 cut-off events. [2023-08-26 07:42:15,284 INFO L125 PetriNetUnfolderBase]: For 57814/58454 co-relation queries the response was YES. [2023-08-26 07:42:15,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308975 conditions, 124650 events. 84761/124650 cut-off events. For 57814/58454 co-relation queries the response was YES. Maximal size of possible extension queue 2637. Compared 947300 event pairs, 58909 based on Foata normal form. 0/107944 useless extension candidates. Maximal degree in co-relation 186279. Up to 107434 conditions per place. [2023-08-26 07:42:15,904 INFO L140 encePairwiseOnDemand]: 362/374 looper letters, 119 selfloop transitions, 20 changer transitions 0/155 dead transitions. [2023-08-26 07:42:15,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 155 transitions, 781 flow [2023-08-26 07:42:15,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:42:15,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:42:15,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 580 transitions. [2023-08-26 07:42:15,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5169340463458111 [2023-08-26 07:42:15,906 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 580 transitions. [2023-08-26 07:42:15,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 580 transitions. [2023-08-26 07:42:15,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:42:15,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 580 transitions. [2023-08-26 07:42:15,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:42:15,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:42:15,909 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:42:15,909 INFO L175 Difference]: Start difference. First operand has 93 places, 97 transitions, 309 flow. Second operand 3 states and 580 transitions. [2023-08-26 07:42:15,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 155 transitions, 781 flow [2023-08-26 07:42:15,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 155 transitions, 766 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-26 07:42:15,930 INFO L231 Difference]: Finished difference. Result has 94 places, 115 transitions, 486 flow [2023-08-26 07:42:15,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=486, PETRI_PLACES=94, PETRI_TRANSITIONS=115} [2023-08-26 07:42:15,930 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -5 predicate places. [2023-08-26 07:42:15,930 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 115 transitions, 486 flow [2023-08-26 07:42:15,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states 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 07:42:15,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:42:15,931 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:42:15,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-26 07:42:15,931 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:42:15,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:42:15,931 INFO L85 PathProgramCache]: Analyzing trace with hash 166450791, now seen corresponding path program 1 times [2023-08-26 07:42:15,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:42:15,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960566153] [2023-08-26 07:42:15,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:42:15,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:42:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:42:15,957 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 07:42:15,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:42:15,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960566153] [2023-08-26 07:42:15,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960566153] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:42:15,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:42:15,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:42:15,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097738545] [2023-08-26 07:42:15,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:42:15,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:42:15,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:42:15,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:42:15,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:42:15,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 374 [2023-08-26 07:42:15,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 115 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states 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 07:42:15,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:42:15,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 374 [2023-08-26 07:42:15,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:42:23,432 INFO L124 PetriNetUnfolderBase]: 86598/127710 cut-off events. [2023-08-26 07:42:23,433 INFO L125 PetriNetUnfolderBase]: For 78126/79205 co-relation queries the response was YES. [2023-08-26 07:42:23,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335427 conditions, 127710 events. 86598/127710 cut-off events. For 78126/79205 co-relation queries the response was YES. Maximal size of possible extension queue 2728. Compared 978442 event pairs, 63285 based on Foata normal form. 105/112894 useless extension candidates. Maximal degree in co-relation 213396. Up to 117435 conditions per place. [2023-08-26 07:42:24,375 INFO L140 encePairwiseOnDemand]: 363/374 looper letters, 132 selfloop transitions, 27 changer transitions 0/175 dead transitions. [2023-08-26 07:42:24,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 175 transitions, 1061 flow [2023-08-26 07:42:24,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:42:24,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:42:24,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 576 transitions. [2023-08-26 07:42:24,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133689839572193 [2023-08-26 07:42:24,377 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 576 transitions. [2023-08-26 07:42:24,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 576 transitions. [2023-08-26 07:42:24,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:42:24,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 576 transitions. [2023-08-26 07:42:24,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states 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 07:42:24,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:42:24,381 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:42:24,381 INFO L175 Difference]: Start difference. First operand has 94 places, 115 transitions, 486 flow. Second operand 3 states and 576 transitions. [2023-08-26 07:42:24,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 175 transitions, 1061 flow [2023-08-26 07:42:24,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 175 transitions, 1001 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:42:24,914 INFO L231 Difference]: Finished difference. Result has 95 places, 138 transitions, 697 flow [2023-08-26 07:42:24,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=697, PETRI_PLACES=95, PETRI_TRANSITIONS=138} [2023-08-26 07:42:24,914 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -4 predicate places. [2023-08-26 07:42:24,914 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 138 transitions, 697 flow [2023-08-26 07:42:24,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states 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 07:42:24,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:42:24,915 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:42:24,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-26 07:42:24,915 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:42:24,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:42:24,915 INFO L85 PathProgramCache]: Analyzing trace with hash -363693362, now seen corresponding path program 1 times [2023-08-26 07:42:24,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:42:24,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104538387] [2023-08-26 07:42:24,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:42:24,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:42:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:42:24,955 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-26 07:42:24,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:42:24,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104538387] [2023-08-26 07:42:24,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104538387] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:42:24,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:42:24,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:42:24,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097831886] [2023-08-26 07:42:24,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:42:24,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:42:24,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:42:24,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:42:24,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:42:24,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 374 [2023-08-26 07:42:24,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 138 transitions, 697 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states 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 07:42:24,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:42:24,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 374 [2023-08-26 07:42:24,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:42:33,890 INFO L124 PetriNetUnfolderBase]: 88043/130016 cut-off events. [2023-08-26 07:42:33,890 INFO L125 PetriNetUnfolderBase]: For 108214/110358 co-relation queries the response was YES. [2023-08-26 07:42:34,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357012 conditions, 130016 events. 88043/130016 cut-off events. For 108214/110358 co-relation queries the response was YES. Maximal size of possible extension queue 2821. Compared 998455 event pairs, 63307 based on Foata normal form. 84/113949 useless extension candidates. Maximal degree in co-relation 231474. Up to 119542 conditions per place. [2023-08-26 07:42:34,780 INFO L140 encePairwiseOnDemand]: 363/374 looper letters, 149 selfloop transitions, 31 changer transitions 0/196 dead transitions. [2023-08-26 07:42:34,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 196 transitions, 1315 flow [2023-08-26 07:42:34,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:42:34,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:42:34,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2023-08-26 07:42:34,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124777183600713 [2023-08-26 07:42:34,782 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2023-08-26 07:42:34,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2023-08-26 07:42:34,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:42:34,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2023-08-26 07:42:34,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:42:34,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:42:34,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:42:34,786 INFO L175 Difference]: Start difference. First operand has 95 places, 138 transitions, 697 flow. Second operand 3 states and 575 transitions. [2023-08-26 07:42:34,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 196 transitions, 1315 flow [2023-08-26 07:42:34,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 196 transitions, 1284 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:42:34,951 INFO L231 Difference]: Finished difference. Result has 97 places, 161 transitions, 957 flow [2023-08-26 07:42:34,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=957, PETRI_PLACES=97, PETRI_TRANSITIONS=161} [2023-08-26 07:42:34,952 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -2 predicate places. [2023-08-26 07:42:34,952 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 161 transitions, 957 flow [2023-08-26 07:42:34,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states 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 07:42:34,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:42:34,953 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 07:42:34,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-26 07:42:34,953 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:42:34,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:42:34,953 INFO L85 PathProgramCache]: Analyzing trace with hash 890593785, now seen corresponding path program 1 times [2023-08-26 07:42:34,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:42:34,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824961505] [2023-08-26 07:42:34,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:42:34,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:42:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:42:35,027 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 07:42:35,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:42:35,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824961505] [2023-08-26 07:42:35,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824961505] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:42:35,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:42:35,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 07:42:35,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178224436] [2023-08-26 07:42:35,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:42:35,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 07:42:35,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:42:35,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 07:42:35,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 07:42:35,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 374 [2023-08-26 07:42:35,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 161 transitions, 957 flow. Second operand has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states 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 07:42:35,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:42:35,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 374 [2023-08-26 07:42:35,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:42:35,147 INFO L124 PetriNetUnfolderBase]: 426/1450 cut-off events. [2023-08-26 07:42:35,147 INFO L125 PetriNetUnfolderBase]: For 1362/1362 co-relation queries the response was YES. [2023-08-26 07:42:35,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3632 conditions, 1450 events. 426/1450 cut-off events. For 1362/1362 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8689 event pairs, 44 based on Foata normal form. 408/1858 useless extension candidates. Maximal degree in co-relation 2306. Up to 880 conditions per place. [2023-08-26 07:42:35,151 INFO L140 encePairwiseOnDemand]: 367/374 looper letters, 39 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2023-08-26 07:42:35,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 76 transitions, 382 flow [2023-08-26 07:42:35,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:42:35,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:42:35,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 705 transitions. [2023-08-26 07:42:35,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4712566844919786 [2023-08-26 07:42:35,153 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 705 transitions. [2023-08-26 07:42:35,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 705 transitions. [2023-08-26 07:42:35,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:42:35,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 705 transitions. [2023-08-26 07:42:35,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 176.25) internal successors, (705), 4 states have internal predecessors, (705), 0 states have call successors, (0), 0 states 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 07:42:35,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 374.0) internal successors, (1870), 5 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states 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 07:42:35,158 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 374.0) internal successors, (1870), 5 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states 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 07:42:35,158 INFO L175 Difference]: Start difference. First operand has 97 places, 161 transitions, 957 flow. Second operand 4 states and 705 transitions. [2023-08-26 07:42:35,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 76 transitions, 382 flow [2023-08-26 07:42:35,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 76 transitions, 282 flow, removed 31 selfloop flow, removed 9 redundant places. [2023-08-26 07:42:35,162 INFO L231 Difference]: Finished difference. Result has 82 places, 70 transitions, 176 flow [2023-08-26 07:42:35,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=82, PETRI_TRANSITIONS=70} [2023-08-26 07:42:35,162 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -17 predicate places. [2023-08-26 07:42:35,162 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 70 transitions, 176 flow [2023-08-26 07:42:35,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states 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 07:42:35,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:42:35,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:42:35,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-26 07:42:35,163 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:42:35,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:42:35,163 INFO L85 PathProgramCache]: Analyzing trace with hash 298512708, now seen corresponding path program 1 times [2023-08-26 07:42:35,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:42:35,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602003925] [2023-08-26 07:42:35,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:42:35,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:42:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:42:35,189 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 07:42:35,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:42:35,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602003925] [2023-08-26 07:42:35,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602003925] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:42:35,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:42:35,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:42:35,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893917455] [2023-08-26 07:42:35,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:42:35,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:42:35,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:42:35,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:42:35,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:42:35,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 374 [2023-08-26 07:42:35,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 70 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states 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 07:42:35,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:42:35,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 374 [2023-08-26 07:42:35,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:42:35,321 INFO L124 PetriNetUnfolderBase]: 578/1567 cut-off events. [2023-08-26 07:42:35,321 INFO L125 PetriNetUnfolderBase]: For 471/471 co-relation queries the response was YES. [2023-08-26 07:42:35,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3474 conditions, 1567 events. 578/1567 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8772 event pairs, 544 based on Foata normal form. 0/1534 useless extension candidates. Maximal degree in co-relation 1793. Up to 1249 conditions per place. [2023-08-26 07:42:35,324 INFO L140 encePairwiseOnDemand]: 371/374 looper letters, 57 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-08-26 07:42:35,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 320 flow [2023-08-26 07:42:35,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:42:35,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:42:35,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2023-08-26 07:42:35,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47237076648841353 [2023-08-26 07:42:35,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2023-08-26 07:42:35,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2023-08-26 07:42:35,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:42:35,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2023-08-26 07:42:35,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states 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 07:42:35,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:42:35,329 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:42:35,330 INFO L175 Difference]: Start difference. First operand has 82 places, 70 transitions, 176 flow. Second operand 3 states and 530 transitions. [2023-08-26 07:42:35,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 75 transitions, 320 flow [2023-08-26 07:42:35,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 75 transitions, 313 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:42:35,331 INFO L231 Difference]: Finished difference. Result has 81 places, 69 transitions, 171 flow [2023-08-26 07:42:35,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=81, PETRI_TRANSITIONS=69} [2023-08-26 07:42:35,332 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -18 predicate places. [2023-08-26 07:42:35,332 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 171 flow [2023-08-26 07:42:35,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states 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 07:42:35,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:42:35,332 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] [2023-08-26 07:42:35,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-26 07:42:35,333 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:42:35,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:42:35,333 INFO L85 PathProgramCache]: Analyzing trace with hash -711071899, now seen corresponding path program 1 times [2023-08-26 07:42:35,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:42:35,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007693748] [2023-08-26 07:42:35,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:42:35,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:42:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:42:35,356 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 07:42:35,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:42:35,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007693748] [2023-08-26 07:42:35,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007693748] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:42:35,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:42:35,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:42:35,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93183274] [2023-08-26 07:42:35,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:42:35,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:42:35,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:42:35,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:42:35,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:42:35,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 374 [2023-08-26 07:42:35,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states 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 07:42:35,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:42:35,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 374 [2023-08-26 07:42:35,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:42:35,648 INFO L124 PetriNetUnfolderBase]: 564/1535 cut-off events. [2023-08-26 07:42:35,648 INFO L125 PetriNetUnfolderBase]: For 480/480 co-relation queries the response was YES. [2023-08-26 07:42:35,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3389 conditions, 1535 events. 564/1535 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 8598 event pairs, 550 based on Foata normal form. 0/1520 useless extension candidates. Maximal degree in co-relation 1985. Up to 1261 conditions per place. [2023-08-26 07:42:35,652 INFO L140 encePairwiseOnDemand]: 371/374 looper letters, 51 selfloop transitions, 2 changer transitions 3/72 dead transitions. [2023-08-26 07:42:35,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 72 transitions, 298 flow [2023-08-26 07:42:35,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:42:35,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:42:35,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 528 transitions. [2023-08-26 07:42:35,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2023-08-26 07:42:35,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 528 transitions. [2023-08-26 07:42:35,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 528 transitions. [2023-08-26 07:42:35,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:42:35,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 528 transitions. [2023-08-26 07:42:35,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:42:35,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:42:35,658 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:42:35,658 INFO L175 Difference]: Start difference. First operand has 81 places, 69 transitions, 171 flow. Second operand 3 states and 528 transitions. [2023-08-26 07:42:35,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 72 transitions, 298 flow [2023-08-26 07:42:35,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 72 transitions, 294 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:42:35,660 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 162 flow [2023-08-26 07:42:35,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2023-08-26 07:42:35,660 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -19 predicate places. [2023-08-26 07:42:35,661 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 162 flow [2023-08-26 07:42:35,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states 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 07:42:35,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:42:35,661 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:42:35,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-26 07:42:35,661 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:42:35,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:42:35,661 INFO L85 PathProgramCache]: Analyzing trace with hash 741644889, now seen corresponding path program 1 times [2023-08-26 07:42:35,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:42:35,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455113601] [2023-08-26 07:42:35,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:42:35,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:42:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:42:35,702 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-26 07:42:35,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:42:35,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455113601] [2023-08-26 07:42:35,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455113601] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:42:35,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:42:35,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:42:35,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093506831] [2023-08-26 07:42:35,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:42:35,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:42:35,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:42:35,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:42:35,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:42:35,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 374 [2023-08-26 07:42:35,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states 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 07:42:35,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:42:35,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 374 [2023-08-26 07:42:35,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:42:35,809 INFO L124 PetriNetUnfolderBase]: 416/1123 cut-off events. [2023-08-26 07:42:35,810 INFO L125 PetriNetUnfolderBase]: For 391/391 co-relation queries the response was YES. [2023-08-26 07:42:35,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2515 conditions, 1123 events. 416/1123 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5882 event pairs, 408 based on Foata normal form. 12/1132 useless extension candidates. Maximal degree in co-relation 1591. Up to 921 conditions per place. [2023-08-26 07:42:35,812 INFO L140 encePairwiseOnDemand]: 372/374 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2023-08-26 07:42:35,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 66 transitions, 266 flow [2023-08-26 07:42:35,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:42:35,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:42:35,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 523 transitions. [2023-08-26 07:42:35,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4661319073083779 [2023-08-26 07:42:35,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 523 transitions. [2023-08-26 07:42:35,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 523 transitions. [2023-08-26 07:42:35,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:42:35,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 523 transitions. [2023-08-26 07:42:35,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 07:42:35,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:42:35,818 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:42:35,818 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 162 flow. Second operand 3 states and 523 transitions. [2023-08-26 07:42:35,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 66 transitions, 266 flow [2023-08-26 07:42:35,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 66 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:42:35,819 INFO L231 Difference]: Finished difference. Result has 76 places, 0 transitions, 0 flow [2023-08-26 07:42:35,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=76, PETRI_TRANSITIONS=0} [2023-08-26 07:42:35,820 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -23 predicate places. [2023-08-26 07:42:35,820 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 0 transitions, 0 flow [2023-08-26 07:42:35,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states 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 07:42:35,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (18 of 19 remaining) [2023-08-26 07:42:35,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-08-26 07:42:35,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-08-26 07:42:35,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-08-26 07:42:35,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2023-08-26 07:42:35,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2023-08-26 07:42:35,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-08-26 07:42:35,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-08-26 07:42:35,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-08-26 07:42:35,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-08-26 07:42:35,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2023-08-26 07:42:35,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2023-08-26 07:42:35,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (6 of 19 remaining) [2023-08-26 07:42:35,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-08-26 07:42:35,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2023-08-26 07:42:35,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-08-26 07:42:35,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-08-26 07:42:35,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-08-26 07:42:35,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-08-26 07:42:35,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-26 07:42:35,823 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:42:35,824 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 (1/2) [2023-08-26 07:42:35,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 230 transitions, 490 flow [2023-08-26 07:42:35,866 INFO L124 PetriNetUnfolderBase]: 54/487 cut-off events. [2023-08-26 07:42:35,867 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 07:42:35,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 487 events. 54/487 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1968 event pairs, 1 based on Foata normal form. 0/401 useless extension candidates. Maximal degree in co-relation 321. Up to 16 conditions per place. [2023-08-26 07:42:35,872 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 230 transitions, 490 flow [2023-08-26 07:42:35,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 230 transitions, 490 flow [2023-08-26 07:42:35,874 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:42:35,874 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 230 transitions, 490 flow [2023-08-26 07:42:35,874 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 230 transitions, 490 flow [2023-08-26 07:42:35,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 230 transitions, 490 flow [2023-08-26 07:42:35,918 INFO L124 PetriNetUnfolderBase]: 54/487 cut-off events. [2023-08-26 07:42:35,918 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 07:42:35,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 487 events. 54/487 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1968 event pairs, 1 based on Foata normal form. 0/401 useless extension candidates. Maximal degree in co-relation 321. Up to 16 conditions per place. [2023-08-26 07:42:35,934 INFO L119 LiptonReduction]: Number of co-enabled transitions 30084 [2023-08-26 07:42:38,181 INFO L134 LiptonReduction]: Checked pairs total: 107797 [2023-08-26 07:42:38,181 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-08-26 07:42:38,182 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 07:42:38,182 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;@41e444e7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:42:38,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 07:42:38,189 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:42:38,190 INFO L124 PetriNetUnfolderBase]: 23/128 cut-off events. [2023-08-26 07:42:38,190 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-26 07:42:38,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:42:38,190 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-26 07:42:38,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:42:38,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:42:38,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1534360814, now seen corresponding path program 1 times [2023-08-26 07:42:38,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:42:38,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754278773] [2023-08-26 07:42:38,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:42:38,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:42:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:42:38,202 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 07:42:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:42:38,212 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 07:42:38,212 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 07:42:38,212 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 07:42:38,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-26 07:42:38,212 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 07:42:38,213 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-26 07:42:38,213 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 07:42:38,213 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-26 07:42:38,232 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 07:42:38,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 278 transitions, 600 flow [2023-08-26 07:42:38,311 INFO L124 PetriNetUnfolderBase]: 86/753 cut-off events. [2023-08-26 07:42:38,311 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 07:42:38,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 808 conditions, 753 events. 86/753 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3384 event pairs, 6 based on Foata normal form. 0/625 useless extension candidates. Maximal degree in co-relation 507. Up to 32 conditions per place. [2023-08-26 07:42:38,319 INFO L82 GeneralOperation]: Start removeDead. Operand has 253 places, 278 transitions, 600 flow [2023-08-26 07:42:38,322 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 253 places, 278 transitions, 600 flow [2023-08-26 07:42:38,322 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:42:38,322 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 253 places, 278 transitions, 600 flow [2023-08-26 07:42:38,323 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 253 places, 278 transitions, 600 flow [2023-08-26 07:42:38,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 278 transitions, 600 flow [2023-08-26 07:42:38,381 INFO L124 PetriNetUnfolderBase]: 86/753 cut-off events. [2023-08-26 07:42:38,381 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 07:42:38,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 808 conditions, 753 events. 86/753 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3384 event pairs, 6 based on Foata normal form. 0/625 useless extension candidates. Maximal degree in co-relation 507. Up to 32 conditions per place. [2023-08-26 07:42:38,413 INFO L119 LiptonReduction]: Number of co-enabled transitions 49128 [2023-08-26 07:42:40,621 INFO L134 LiptonReduction]: Checked pairs total: 179126 [2023-08-26 07:42:40,621 INFO L136 LiptonReduction]: Total number of compositions: 161 [2023-08-26 07:42:40,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:42:40,622 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;@41e444e7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:42:40,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-26 07:42:40,624 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:42:40,624 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-26 07:42:40,624 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:42:40,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:42:40,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 07:42:40,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:42:40,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:42:40,624 INFO L85 PathProgramCache]: Analyzing trace with hash 65412278, now seen corresponding path program 1 times [2023-08-26 07:42:40,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:42:40,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782131539] [2023-08-26 07:42:40,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:42:40,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:42:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:42:40,707 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 07:42:40,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:42:40,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782131539] [2023-08-26 07:42:40,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782131539] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:42:40,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:42:40,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:42:40,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449937522] [2023-08-26 07:42:40,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:42:40,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:42:40,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:42:40,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:42:40,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:42:40,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 439 [2023-08-26 07:42:40,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 147 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 0 states have call successors, (0), 0 states 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 07:42:40,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:42:40,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 439 [2023-08-26 07:42:40,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:44:01,522 INFO L124 PetriNetUnfolderBase]: 667680/980760 cut-off events. [2023-08-26 07:44:01,523 INFO L125 PetriNetUnfolderBase]: For 25615/25615 co-relation queries the response was YES. [2023-08-26 07:44:05,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1860069 conditions, 980760 events. 667680/980760 cut-off events. For 25615/25615 co-relation queries the response was YES. Maximal size of possible extension queue 20019. Compared 9574895 event pairs, 631204 based on Foata normal form. 168113/1043892 useless extension candidates. Maximal degree in co-relation 499836. Up to 864805 conditions per place. [2023-08-26 07:44:12,169 INFO L140 encePairwiseOnDemand]: 408/439 looper letters, 70 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-08-26 07:44:12,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 131 transitions, 450 flow [2023-08-26 07:44:12,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:44:12,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:44:12,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 800 transitions. [2023-08-26 07:44:12,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6074411541381929 [2023-08-26 07:44:12,172 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 800 transitions. [2023-08-26 07:44:12,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 800 transitions. [2023-08-26 07:44:12,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:44:12,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 800 transitions. [2023-08-26 07:44:12,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 0 states 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 07:44:12,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states 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 07:44:12,176 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states 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 07:44:12,176 INFO L175 Difference]: Start difference. First operand has 125 places, 147 transitions, 338 flow. Second operand 3 states and 800 transitions. [2023-08-26 07:44:12,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 131 transitions, 450 flow [2023-08-26 07:44:12,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 131 transitions, 450 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:44:12,194 INFO L231 Difference]: Finished difference. Result has 127 places, 120 transitions, 294 flow [2023-08-26 07:44:12,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=127, PETRI_TRANSITIONS=120} [2023-08-26 07:44:12,195 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 2 predicate places. [2023-08-26 07:44:12,195 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 120 transitions, 294 flow [2023-08-26 07:44:12,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 0 states have call successors, (0), 0 states 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 07:44:12,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:44:12,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:44:12,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-26 07:44:12,196 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:44:12,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:44:12,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1603313003, now seen corresponding path program 1 times [2023-08-26 07:44:12,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:44:12,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339214446] [2023-08-26 07:44:12,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:44:12,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:44:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:44:12,211 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 07:44:12,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:44:12,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339214446] [2023-08-26 07:44:12,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339214446] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:44:12,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:44:12,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:44:12,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338649444] [2023-08-26 07:44:12,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:44:12,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:44:12,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:44:12,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:44:12,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:44:12,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 439 [2023-08-26 07:44:12,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 120 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:44:12,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:44:12,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 439 [2023-08-26 07:44:12,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand