./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 134e9604c8f91a200c8250c9fbb45867ed525dc78e65c16e0a5fa44f5d71ac67 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 13:29:37,857 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 13:29:37,920 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-20 13:29:37,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 13:29:37,926 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 13:29:37,951 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 13:29:37,952 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 13:29:37,952 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 13:29:37,953 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 13:29:37,953 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 13:29:37,954 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 13:29:37,954 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 13:29:37,954 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 13:29:37,955 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 13:29:37,955 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 13:29:37,955 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 13:29:37,956 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 13:29:37,956 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 13:29:37,956 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 13:29:37,957 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 13:29:37,957 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 13:29:37,958 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 13:29:37,958 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-20 13:29:37,958 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 13:29:37,959 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 13:29:37,959 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 13:29:37,959 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 13:29:37,960 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 13:29:37,960 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 13:29:37,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 13:29:37,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 13:29:37,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:29:37,966 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 13:29:37,966 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 13:29:37,966 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 13:29:37,967 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 13:29:37,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 13:29:37,967 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 13:29:37,968 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 13:29:37,968 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 13:29:37,970 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 13:29:37,971 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 134e9604c8f91a200c8250c9fbb45867ed525dc78e65c16e0a5fa44f5d71ac67 [2024-11-20 13:29:38,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 13:29:38,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 13:29:38,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 13:29:38,333 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 13:29:38,334 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 13:29:38,335 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i [2024-11-20 13:29:39,758 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 13:29:40,123 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 13:29:40,123 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i [2024-11-20 13:29:40,138 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/884270ee1/cc91a013fcd94ee882ea4a63dea9a02b/FLAG8d128e727 [2024-11-20 13:29:40,344 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/884270ee1/cc91a013fcd94ee882ea4a63dea9a02b [2024-11-20 13:29:40,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 13:29:40,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 13:29:40,350 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 13:29:40,350 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 13:29:40,358 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 13:29:40,359 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:29:40" (1/1) ... [2024-11-20 13:29:40,360 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58d9f466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:29:40, skipping insertion in model container [2024-11-20 13:29:40,360 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:29:40" (1/1) ... [2024-11-20 13:29:40,400 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 13:29:40,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:29:40,777 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 13:29:40,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:29:40,871 INFO L204 MainTranslator]: Completed translation [2024-11-20 13:29:40,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:29:40 WrapperNode [2024-11-20 13:29:40,872 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 13:29:40,873 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 13:29:40,873 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 13:29:40,874 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 13:29:40,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:29:40" (1/1) ... [2024-11-20 13:29:40,892 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:29:40" (1/1) ... [2024-11-20 13:29:40,909 INFO L138 Inliner]: procedures = 168, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-11-20 13:29:40,910 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 13:29:40,910 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 13:29:40,911 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 13:29:40,912 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 13:29:40,918 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:29:40" (1/1) ... [2024-11-20 13:29:40,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:29:40" (1/1) ... [2024-11-20 13:29:40,922 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:29:40" (1/1) ... [2024-11-20 13:29:40,922 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:29:40" (1/1) ... [2024-11-20 13:29:40,927 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:29:40" (1/1) ... [2024-11-20 13:29:40,933 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:29:40" (1/1) ... [2024-11-20 13:29:40,935 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:29:40" (1/1) ... [2024-11-20 13:29:40,937 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:29:40" (1/1) ... [2024-11-20 13:29:40,939 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 13:29:40,940 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 13:29:40,940 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 13:29:40,940 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 13:29:40,941 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:29:40" (1/1) ... [2024-11-20 13:29:40,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:29:40,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:29:40,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 13:29:40,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 13:29:41,019 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-20 13:29:41,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-20 13:29:41,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-20 13:29:41,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 13:29:41,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-20 13:29:41,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-20 13:29:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 13:29:41,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 13:29:41,022 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 13:29:41,147 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 13:29:41,148 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 13:29:41,262 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 13:29:41,262 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 13:29:41,331 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 13:29:41,331 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-20 13:29:41,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:29:41 BoogieIcfgContainer [2024-11-20 13:29:41,332 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 13:29:41,334 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 13:29:41,334 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 13:29:41,338 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 13:29:41,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:29:40" (1/3) ... [2024-11-20 13:29:41,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389377df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:29:41, skipping insertion in model container [2024-11-20 13:29:41,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:29:40" (2/3) ... [2024-11-20 13:29:41,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389377df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:29:41, skipping insertion in model container [2024-11-20 13:29:41,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:29:41" (3/3) ... [2024-11-20 13:29:41,342 INFO L112 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs.i [2024-11-20 13:29:41,357 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 13:29:41,357 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-11-20 13:29:41,358 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 13:29:41,398 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 13:29:41,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 33 transitions, 70 flow [2024-11-20 13:29:41,468 INFO L124 PetriNetUnfolderBase]: 2/42 cut-off events. [2024-11-20 13:29:41,469 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 13:29:41,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 42 events. 2/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 61 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 20. Up to 4 conditions per place. [2024-11-20 13:29:41,475 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 33 transitions, 70 flow [2024-11-20 13:29:41,478 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 33 transitions, 70 flow [2024-11-20 13:29:41,487 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:29:41,493 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@45996f5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:29:41,493 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-20 13:29:41,502 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 13:29:41,502 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2024-11-20 13:29:41,502 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 13:29:41,502 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:29:41,503 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:29:41,504 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-11-20 13:29:41,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:29:41,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1248445395, now seen corresponding path program 1 times [2024-11-20 13:29:41,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:29:41,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866080897] [2024-11-20 13:29:41,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:29:41,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:29:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:29:41,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:29:41,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:29:41,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866080897] [2024-11-20 13:29:41,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866080897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:29:41,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:29:41,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 13:29:41,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659610910] [2024-11-20 13:29:41,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:29:41,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-20 13:29:41,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:29:41,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-20 13:29:41,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 13:29:41,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 33 [2024-11-20 13:29:41,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 70 flow. Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:29:41,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:29:41,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 33 [2024-11-20 13:29:41,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:29:41,835 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2024-11-20 13:29:41,836 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 13:29:41,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 0/27 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 5/32 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2024-11-20 13:29:41,837 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 4 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2024-11-20 13:29:41,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 23 transitions, 58 flow [2024-11-20 13:29:41,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-20 13:29:41,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-20 13:29:41,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 55 transitions. [2024-11-20 13:29:41,849 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2024-11-20 13:29:41,850 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 70 flow. Second operand 2 states and 55 transitions. [2024-11-20 13:29:41,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 23 transitions, 58 flow [2024-11-20 13:29:41,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 23 transitions, 58 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 13:29:41,856 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 50 flow [2024-11-20 13:29:41,859 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=50, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2024-11-20 13:29:41,865 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places. [2024-11-20 13:29:41,865 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 50 flow [2024-11-20 13:29:41,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:29:41,866 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:29:41,866 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:29:41,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 13:29:41,867 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-11-20 13:29:41,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:29:41,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1991218636, now seen corresponding path program 1 times [2024-11-20 13:29:41,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:29:41,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833578726] [2024-11-20 13:29:41,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:29:41,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:29:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:29:41,900 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 13:29:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:29:41,942 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 13:29:41,943 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 13:29:41,945 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-11-20 13:29:41,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2024-11-20 13:29:41,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2024-11-20 13:29:41,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2024-11-20 13:29:41,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2024-11-20 13:29:41,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2024-11-20 13:29:41,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2024-11-20 13:29:41,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2024-11-20 13:29:41,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2024-11-20 13:29:41,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2024-11-20 13:29:41,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2024-11-20 13:29:41,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 13:29:41,949 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-20 13:29:41,953 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 13:29:41,954 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-20 13:29:41,986 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 13:29:41,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 45 transitions, 100 flow [2024-11-20 13:29:42,011 INFO L124 PetriNetUnfolderBase]: 3/63 cut-off events. [2024-11-20 13:29:42,012 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 13:29:42,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 63 events. 3/63 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 43. Up to 6 conditions per place. [2024-11-20 13:29:42,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 45 transitions, 100 flow [2024-11-20 13:29:42,016 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 45 transitions, 100 flow [2024-11-20 13:29:42,018 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:29:42,019 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@45996f5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:29:42,020 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-20 13:29:42,028 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 13:29:42,030 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2024-11-20 13:29:42,030 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 13:29:42,030 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:29:42,030 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:29:42,031 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2024-11-20 13:29:42,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:29:42,035 INFO L85 PathProgramCache]: Analyzing trace with hash 2129232158, now seen corresponding path program 1 times [2024-11-20 13:29:42,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:29:42,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457582201] [2024-11-20 13:29:42,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:29:42,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:29:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:29:42,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:29:42,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:29:42,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457582201] [2024-11-20 13:29:42,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457582201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:29:42,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:29:42,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 13:29:42,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066464068] [2024-11-20 13:29:42,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:29:42,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-20 13:29:42,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:29:42,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-20 13:29:42,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 13:29:42,070 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 45 [2024-11-20 13:29:42,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 100 flow. Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:29:42,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:29:42,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 45 [2024-11-20 13:29:42,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:29:42,114 INFO L124 PetriNetUnfolderBase]: 12/72 cut-off events. [2024-11-20 13:29:42,116 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-20 13:29:42,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 72 events. 12/72 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 164 event pairs, 12 based on Foata normal form. 21/91 useless extension candidates. Maximal degree in co-relation 66. Up to 33 conditions per place. [2024-11-20 13:29:42,118 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 8 selfloop transitions, 0 changer transitions 0/30 dead transitions. [2024-11-20 13:29:42,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 86 flow [2024-11-20 13:29:42,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-20 13:29:42,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-20 13:29:42,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 70 transitions. [2024-11-20 13:29:42,121 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2024-11-20 13:29:42,121 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 100 flow. Second operand 2 states and 70 transitions. [2024-11-20 13:29:42,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 86 flow [2024-11-20 13:29:42,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 30 transitions, 86 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 13:29:42,122 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 70 flow [2024-11-20 13:29:42,123 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2024-11-20 13:29:42,124 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -13 predicate places. [2024-11-20 13:29:42,124 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 70 flow [2024-11-20 13:29:42,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:29:42,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:29:42,125 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:29:42,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 13:29:42,125 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2024-11-20 13:29:42,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:29:42,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1559603803, now seen corresponding path program 1 times [2024-11-20 13:29:42,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:29:42,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253159715] [2024-11-20 13:29:42,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:29:42,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:29:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:29:42,152 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 13:29:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:29:42,178 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 13:29:42,182 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 13:29:42,182 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-11-20 13:29:42,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2024-11-20 13:29:42,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2024-11-20 13:29:42,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2024-11-20 13:29:42,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2024-11-20 13:29:42,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2024-11-20 13:29:42,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2024-11-20 13:29:42,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2024-11-20 13:29:42,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2024-11-20 13:29:42,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2024-11-20 13:29:42,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2024-11-20 13:29:42,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2024-11-20 13:29:42,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2024-11-20 13:29:42,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2024-11-20 13:29:42,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2024-11-20 13:29:42,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2024-11-20 13:29:42,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 13:29:42,185 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-20 13:29:42,186 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 13:29:42,186 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-20 13:29:42,221 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 13:29:42,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 57 transitions, 132 flow [2024-11-20 13:29:42,242 INFO L124 PetriNetUnfolderBase]: 4/84 cut-off events. [2024-11-20 13:29:42,242 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-20 13:29:42,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 84 events. 4/84 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 175 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2024-11-20 13:29:42,243 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 57 transitions, 132 flow [2024-11-20 13:29:42,246 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 57 transitions, 132 flow [2024-11-20 13:29:42,248 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:29:42,250 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@45996f5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:29:42,250 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-20 13:29:42,256 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 13:29:42,256 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2024-11-20 13:29:42,256 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 13:29:42,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:29:42,256 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:29:42,257 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-20 13:29:42,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:29:42,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1813236361, now seen corresponding path program 1 times [2024-11-20 13:29:42,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:29:42,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448691373] [2024-11-20 13:29:42,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:29:42,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:29:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:29:42,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:29:42,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:29:42,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448691373] [2024-11-20 13:29:42,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448691373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:29:42,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:29:42,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 13:29:42,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290966621] [2024-11-20 13:29:42,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:29:42,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-20 13:29:42,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:29:42,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-20 13:29:42,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 13:29:42,301 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2024-11-20 13:29:42,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 132 flow. Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:29:42,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:29:42,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2024-11-20 13:29:42,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:29:42,399 INFO L124 PetriNetUnfolderBase]: 108/289 cut-off events. [2024-11-20 13:29:42,399 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-11-20 13:29:42,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 289 events. 108/289 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1354 event pairs, 108 based on Foata normal form. 85/368 useless extension candidates. Maximal degree in co-relation 347. Up to 193 conditions per place. [2024-11-20 13:29:42,406 INFO L140 encePairwiseOnDemand]: 40/57 looper letters, 12 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2024-11-20 13:29:42,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 116 flow [2024-11-20 13:29:42,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-20 13:29:42,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-20 13:29:42,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 85 transitions. [2024-11-20 13:29:42,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7456140350877193 [2024-11-20 13:29:42,409 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 132 flow. Second operand 2 states and 85 transitions. [2024-11-20 13:29:42,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 116 flow [2024-11-20 13:29:42,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 37 transitions, 114 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-20 13:29:42,411 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 90 flow [2024-11-20 13:29:42,411 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=90, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2024-11-20 13:29:42,412 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, -18 predicate places. [2024-11-20 13:29:42,412 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 90 flow [2024-11-20 13:29:42,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:29:42,413 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:29:42,414 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:29:42,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 13:29:42,414 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-20 13:29:42,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:29:42,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1239216377, now seen corresponding path program 1 times [2024-11-20 13:29:42,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:29:42,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222465663] [2024-11-20 13:29:42,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:29:42,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:29:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:29:42,441 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 13:29:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:29:42,459 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 13:29:42,459 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 13:29:42,459 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-11-20 13:29:42,460 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2024-11-20 13:29:42,460 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2024-11-20 13:29:42,460 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2024-11-20 13:29:42,460 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2024-11-20 13:29:42,470 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2024-11-20 13:29:42,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2024-11-20 13:29:42,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2024-11-20 13:29:42,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2024-11-20 13:29:42,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2024-11-20 13:29:42,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2024-11-20 13:29:42,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2024-11-20 13:29:42,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2024-11-20 13:29:42,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2024-11-20 13:29:42,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2024-11-20 13:29:42,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2024-11-20 13:29:42,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2024-11-20 13:29:42,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2024-11-20 13:29:42,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2024-11-20 13:29:42,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2024-11-20 13:29:42,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2024-11-20 13:29:42,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 13:29:42,475 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-20 13:29:42,476 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 13:29:42,476 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-20 13:29:42,506 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 13:29:42,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 166 flow [2024-11-20 13:29:42,530 INFO L124 PetriNetUnfolderBase]: 5/105 cut-off events. [2024-11-20 13:29:42,530 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-20 13:29:42,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 105 events. 5/105 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 233 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 92. Up to 10 conditions per place. [2024-11-20 13:29:42,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 166 flow [2024-11-20 13:29:42,533 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 69 transitions, 166 flow [2024-11-20 13:29:42,534 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:29:42,535 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@45996f5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:29:42,539 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-20 13:29:42,543 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 13:29:42,545 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2024-11-20 13:29:42,545 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 13:29:42,545 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:29:42,545 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:29:42,546 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-11-20 13:29:42,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:29:42,546 INFO L85 PathProgramCache]: Analyzing trace with hash 300458708, now seen corresponding path program 1 times [2024-11-20 13:29:42,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:29:42,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425407123] [2024-11-20 13:29:42,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:29:42,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:29:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:29:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:29:42,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:29:42,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425407123] [2024-11-20 13:29:42,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425407123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:29:42,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:29:42,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 13:29:42,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686392463] [2024-11-20 13:29:42,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:29:42,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-20 13:29:42,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:29:42,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-20 13:29:42,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 13:29:42,582 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 69 [2024-11-20 13:29:42,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 166 flow. Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:29:42,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:29:42,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 69 [2024-11-20 13:29:42,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:29:42,837 INFO L124 PetriNetUnfolderBase]: 684/1338 cut-off events. [2024-11-20 13:29:42,837 INFO L125 PetriNetUnfolderBase]: For 755/755 co-relation queries the response was YES. [2024-11-20 13:29:42,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2766 conditions, 1338 events. 684/1338 cut-off events. For 755/755 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8146 event pairs, 684 based on Foata normal form. 341/1667 useless extension candidates. Maximal degree in co-relation 1756. Up to 1025 conditions per place. [2024-11-20 13:29:42,857 INFO L140 encePairwiseOnDemand]: 47/69 looper letters, 16 selfloop transitions, 0 changer transitions 0/44 dead transitions. [2024-11-20 13:29:42,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 148 flow [2024-11-20 13:29:42,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-20 13:29:42,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-20 13:29:42,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 100 transitions. [2024-11-20 13:29:42,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7246376811594203 [2024-11-20 13:29:42,864 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 166 flow. Second operand 2 states and 100 transitions. [2024-11-20 13:29:42,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 148 flow [2024-11-20 13:29:42,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 44 transitions, 142 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-20 13:29:42,867 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 110 flow [2024-11-20 13:29:42,868 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=110, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-11-20 13:29:42,869 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, -23 predicate places. [2024-11-20 13:29:42,870 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 110 flow [2024-11-20 13:29:42,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:29:42,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:29:42,870 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:29:42,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 13:29:42,871 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-11-20 13:29:42,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:29:42,872 INFO L85 PathProgramCache]: Analyzing trace with hash 700530224, now seen corresponding path program 1 times [2024-11-20 13:29:42,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:29:42,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532311419] [2024-11-20 13:29:42,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:29:42,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:29:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:29:42,897 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 13:29:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:29:42,917 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 13:29:42,917 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 13:29:42,917 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2024-11-20 13:29:42,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2024-11-20 13:29:42,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2024-11-20 13:29:42,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2024-11-20 13:29:42,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2024-11-20 13:29:42,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 26 remaining) [2024-11-20 13:29:42,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2024-11-20 13:29:42,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 26 remaining) [2024-11-20 13:29:42,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2024-11-20 13:29:42,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2024-11-20 13:29:42,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2024-11-20 13:29:42,920 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 26 remaining) [2024-11-20 13:29:42,920 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2024-11-20 13:29:42,920 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2024-11-20 13:29:42,920 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2024-11-20 13:29:42,920 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2024-11-20 13:29:42,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 26 remaining) [2024-11-20 13:29:42,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 26 remaining) [2024-11-20 13:29:42,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 26 remaining) [2024-11-20 13:29:42,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2024-11-20 13:29:42,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2024-11-20 13:29:42,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2024-11-20 13:29:42,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2024-11-20 13:29:42,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 26 remaining) [2024-11-20 13:29:42,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2024-11-20 13:29:42,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2024-11-20 13:29:42,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 13:29:42,923 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-20 13:29:42,923 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 13:29:42,923 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-20 13:29:42,966 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 13:29:42,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 81 transitions, 202 flow [2024-11-20 13:29:42,988 INFO L124 PetriNetUnfolderBase]: 6/126 cut-off events. [2024-11-20 13:29:42,988 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-20 13:29:42,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 126 events. 6/126 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 306 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 118. Up to 12 conditions per place. [2024-11-20 13:29:42,991 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 81 transitions, 202 flow [2024-11-20 13:29:42,993 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 81 transitions, 202 flow [2024-11-20 13:29:42,995 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:29:42,996 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@45996f5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:29:42,996 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-11-20 13:29:42,998 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 13:29:42,998 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2024-11-20 13:29:42,998 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 13:29:42,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:29:42,999 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:29:42,999 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2024-11-20 13:29:42,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:29:42,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1885865439, now seen corresponding path program 1 times [2024-11-20 13:29:43,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:29:43,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77841799] [2024-11-20 13:29:43,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:29:43,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:29:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:29:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:29:43,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:29:43,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77841799] [2024-11-20 13:29:43,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77841799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:29:43,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:29:43,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 13:29:43,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705271440] [2024-11-20 13:29:43,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:29:43,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-20 13:29:43,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:29:43,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-20 13:29:43,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 13:29:43,024 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-11-20 13:29:43,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 81 transitions, 202 flow. Second operand has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:29:43,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:29:43,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-11-20 13:29:43,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:29:43,876 INFO L124 PetriNetUnfolderBase]: 3756/6291 cut-off events. [2024-11-20 13:29:43,877 INFO L125 PetriNetUnfolderBase]: For 4599/4599 co-relation queries the response was YES. [2024-11-20 13:29:43,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13352 conditions, 6291 events. 3756/6291 cut-off events. For 4599/4599 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 43555 event pairs, 3756 based on Foata normal form. 1365/7636 useless extension candidates. Maximal degree in co-relation 8541. Up to 5121 conditions per place. [2024-11-20 13:29:43,943 INFO L140 encePairwiseOnDemand]: 54/81 looper letters, 20 selfloop transitions, 0 changer transitions 0/51 dead transitions. [2024-11-20 13:29:43,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 51 transitions, 182 flow [2024-11-20 13:29:43,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-20 13:29:43,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-20 13:29:43,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 115 transitions. [2024-11-20 13:29:43,945 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7098765432098766 [2024-11-20 13:29:43,945 INFO L175 Difference]: Start difference. First operand has 91 places, 81 transitions, 202 flow. Second operand 2 states and 115 transitions. [2024-11-20 13:29:43,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 51 transitions, 182 flow [2024-11-20 13:29:43,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 51 transitions, 170 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-20 13:29:43,951 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 130 flow [2024-11-20 13:29:43,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=130, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2024-11-20 13:29:43,952 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -28 predicate places. [2024-11-20 13:29:43,953 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 130 flow [2024-11-20 13:29:43,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:29:43,953 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:29:43,954 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:29:43,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 13:29:43,954 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2024-11-20 13:29:43,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:29:43,955 INFO L85 PathProgramCache]: Analyzing trace with hash 686229486, now seen corresponding path program 1 times [2024-11-20 13:29:43,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:29:43,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726177575] [2024-11-20 13:29:43,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:29:43,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:29:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:29:43,980 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 13:29:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:29:44,001 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 13:29:44,002 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 13:29:44,003 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2024-11-20 13:29:44,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2024-11-20 13:29:44,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2024-11-20 13:29:44,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2024-11-20 13:29:44,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2024-11-20 13:29:44,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2024-11-20 13:29:44,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2024-11-20 13:29:44,004 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2024-11-20 13:29:44,004 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2024-11-20 13:29:44,004 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2024-11-20 13:29:44,004 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2024-11-20 13:29:44,004 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2024-11-20 13:29:44,004 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2024-11-20 13:29:44,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2024-11-20 13:29:44,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2024-11-20 13:29:44,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2024-11-20 13:29:44,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2024-11-20 13:29:44,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2024-11-20 13:29:44,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2024-11-20 13:29:44,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2024-11-20 13:29:44,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2024-11-20 13:29:44,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2024-11-20 13:29:44,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2024-11-20 13:29:44,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2024-11-20 13:29:44,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2024-11-20 13:29:44,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2024-11-20 13:29:44,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2024-11-20 13:29:44,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2024-11-20 13:29:44,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2024-11-20 13:29:44,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2024-11-20 13:29:44,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2024-11-20 13:29:44,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 13:29:44,008 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-20 13:29:44,009 WARN L244 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 13:29:44,009 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-11-20 13:29:44,046 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 13:29:44,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 93 transitions, 240 flow [2024-11-20 13:29:44,064 INFO L124 PetriNetUnfolderBase]: 7/147 cut-off events. [2024-11-20 13:29:44,064 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-20 13:29:44,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 147 events. 7/147 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 338 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 145. Up to 14 conditions per place. [2024-11-20 13:29:44,065 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 93 transitions, 240 flow [2024-11-20 13:29:44,068 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 93 transitions, 240 flow [2024-11-20 13:29:44,070 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:29:44,071 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@45996f5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:29:44,071 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-20 13:29:44,073 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 13:29:44,073 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2024-11-20 13:29:44,073 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 13:29:44,073 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:29:44,073 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:29:44,073 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2024-11-20 13:29:44,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:29:44,073 INFO L85 PathProgramCache]: Analyzing trace with hash -2020476982, now seen corresponding path program 1 times [2024-11-20 13:29:44,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:29:44,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119649720] [2024-11-20 13:29:44,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:29:44,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:29:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:29:44,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:29:44,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:29:44,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119649720] [2024-11-20 13:29:44,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119649720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:29:44,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:29:44,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 13:29:44,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530793552] [2024-11-20 13:29:44,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:29:44,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-20 13:29:44,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:29:44,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-20 13:29:44,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 13:29:44,101 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 93 [2024-11-20 13:29:44,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 93 transitions, 240 flow. Second operand has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:29:44,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:29:44,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 93 [2024-11-20 13:29:44,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:29:47,985 INFO L124 PetriNetUnfolderBase]: 19116/29164 cut-off events. [2024-11-20 13:29:47,985 INFO L125 PetriNetUnfolderBase]: For 26108/26108 co-relation queries the response was YES. [2024-11-20 13:29:48,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62850 conditions, 29164 events. 19116/29164 cut-off events. For 26108/26108 co-relation queries the response was YES. Maximal size of possible extension queue 1323. Compared 218521 event pairs, 19116 based on Foata normal form. 5461/34595 useless extension candidates. Maximal degree in co-relation 40286. Up to 24577 conditions per place. [2024-11-20 13:29:48,302 INFO L140 encePairwiseOnDemand]: 61/93 looper letters, 24 selfloop transitions, 0 changer transitions 0/58 dead transitions. [2024-11-20 13:29:48,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 58 transitions, 218 flow [2024-11-20 13:29:48,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-20 13:29:48,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-20 13:29:48,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 130 transitions. [2024-11-20 13:29:48,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6989247311827957 [2024-11-20 13:29:48,304 INFO L175 Difference]: Start difference. First operand has 105 places, 93 transitions, 240 flow. Second operand 2 states and 130 transitions. [2024-11-20 13:29:48,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 58 transitions, 218 flow [2024-11-20 13:29:48,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 58 transitions, 198 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-11-20 13:29:48,318 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 150 flow [2024-11-20 13:29:48,318 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=150, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2024-11-20 13:29:48,319 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -33 predicate places. [2024-11-20 13:29:48,320 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 150 flow [2024-11-20 13:29:48,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:29:48,321 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:29:48,321 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:29:48,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 13:29:48,321 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2024-11-20 13:29:48,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:29:48,322 INFO L85 PathProgramCache]: Analyzing trace with hash -112172539, now seen corresponding path program 1 times [2024-11-20 13:29:48,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:29:48,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798476756] [2024-11-20 13:29:48,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:29:48,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:29:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:29:48,339 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 13:29:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:29:48,354 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 13:29:48,354 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 13:29:48,354 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2024-11-20 13:29:48,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2024-11-20 13:29:48,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2024-11-20 13:29:48,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2024-11-20 13:29:48,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2024-11-20 13:29:48,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2024-11-20 13:29:48,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2024-11-20 13:29:48,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2024-11-20 13:29:48,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2024-11-20 13:29:48,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2024-11-20 13:29:48,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2024-11-20 13:29:48,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2024-11-20 13:29:48,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2024-11-20 13:29:48,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2024-11-20 13:29:48,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2024-11-20 13:29:48,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2024-11-20 13:29:48,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2024-11-20 13:29:48,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2024-11-20 13:29:48,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2024-11-20 13:29:48,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2024-11-20 13:29:48,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2024-11-20 13:29:48,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2024-11-20 13:29:48,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2024-11-20 13:29:48,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2024-11-20 13:29:48,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2024-11-20 13:29:48,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2024-11-20 13:29:48,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2024-11-20 13:29:48,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2024-11-20 13:29:48,359 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2024-11-20 13:29:48,359 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2024-11-20 13:29:48,359 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2024-11-20 13:29:48,359 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2024-11-20 13:29:48,359 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2024-11-20 13:29:48,360 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2024-11-20 13:29:48,360 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2024-11-20 13:29:48,360 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2024-11-20 13:29:48,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 13:29:48,361 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-20 13:29:48,361 WARN L244 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 13:29:48,361 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2024-11-20 13:29:48,403 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 13:29:48,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 105 transitions, 280 flow [2024-11-20 13:29:48,425 INFO L124 PetriNetUnfolderBase]: 8/168 cut-off events. [2024-11-20 13:29:48,425 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-20 13:29:48,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 168 events. 8/168 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 446 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 173. Up to 16 conditions per place. [2024-11-20 13:29:48,427 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 105 transitions, 280 flow [2024-11-20 13:29:48,430 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 105 transitions, 280 flow [2024-11-20 13:29:48,431 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:29:48,431 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@45996f5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:29:48,431 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-11-20 13:29:48,433 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 13:29:48,433 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2024-11-20 13:29:48,434 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 13:29:48,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:29:48,434 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:29:48,434 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2024-11-20 13:29:48,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:29:48,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1466334037, now seen corresponding path program 1 times [2024-11-20 13:29:48,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:29:48,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023273531] [2024-11-20 13:29:48,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:29:48,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:29:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:29:48,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:29:48,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:29:48,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023273531] [2024-11-20 13:29:48,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023273531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:29:48,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:29:48,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 13:29:48,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522299999] [2024-11-20 13:29:48,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:29:48,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-20 13:29:48,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:29:48,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-20 13:29:48,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 13:29:48,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 105 [2024-11-20 13:29:48,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 105 transitions, 280 flow. Second operand has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:29:48,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:29:48,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 105 [2024-11-20 13:29:48,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:30:00,997 INFO L124 PetriNetUnfolderBase]: 92844/132933 cut-off events. [2024-11-20 13:30:00,998 INFO L125 PetriNetUnfolderBase]: For 140802/140802 co-relation queries the response was YES. [2024-11-20 13:30:01,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289500 conditions, 132933 events. 92844/132933 cut-off events. For 140802/140802 co-relation queries the response was YES. Maximal size of possible extension queue 5189. Compared 1050636 event pairs, 92844 based on Foata normal form. 21845/154736 useless extension candidates. Maximal degree in co-relation 185695. Up to 114689 conditions per place. [2024-11-20 13:30:02,670 INFO L140 encePairwiseOnDemand]: 68/105 looper letters, 28 selfloop transitions, 0 changer transitions 0/65 dead transitions. [2024-11-20 13:30:02,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 65 transitions, 256 flow [2024-11-20 13:30:02,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-20 13:30:02,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-20 13:30:02,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 145 transitions. [2024-11-20 13:30:02,672 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6904761904761905 [2024-11-20 13:30:02,672 INFO L175 Difference]: Start difference. First operand has 119 places, 105 transitions, 280 flow. Second operand 2 states and 145 transitions. [2024-11-20 13:30:02,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 65 transitions, 256 flow [2024-11-20 13:30:02,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 65 transitions, 226 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-11-20 13:30:02,712 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 170 flow [2024-11-20 13:30:02,712 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=170, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2024-11-20 13:30:02,713 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, -38 predicate places. [2024-11-20 13:30:02,713 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 170 flow [2024-11-20 13:30:02,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:30:02,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:30:02,713 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:30:02,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 13:30:02,714 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2024-11-20 13:30:02,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:30:02,714 INFO L85 PathProgramCache]: Analyzing trace with hash 294065427, now seen corresponding path program 1 times [2024-11-20 13:30:02,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:30:02,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195710662] [2024-11-20 13:30:02,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:30:02,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:30:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:30:02,727 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 13:30:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:30:02,741 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 13:30:02,741 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 13:30:02,741 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2024-11-20 13:30:02,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (39 of 41 remaining) [2024-11-20 13:30:02,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (38 of 41 remaining) [2024-11-20 13:30:02,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (37 of 41 remaining) [2024-11-20 13:30:02,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (36 of 41 remaining) [2024-11-20 13:30:02,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (35 of 41 remaining) [2024-11-20 13:30:02,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 41 remaining) [2024-11-20 13:30:02,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 41 remaining) [2024-11-20 13:30:02,743 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (32 of 41 remaining) [2024-11-20 13:30:02,743 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 41 remaining) [2024-11-20 13:30:02,743 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (30 of 41 remaining) [2024-11-20 13:30:02,743 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 41 remaining) [2024-11-20 13:30:02,743 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 41 remaining) [2024-11-20 13:30:02,743 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 41 remaining) [2024-11-20 13:30:02,743 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 41 remaining) [2024-11-20 13:30:02,744 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 41 remaining) [2024-11-20 13:30:02,744 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 41 remaining) [2024-11-20 13:30:02,744 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 41 remaining) [2024-11-20 13:30:02,744 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 41 remaining) [2024-11-20 13:30:02,744 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 41 remaining) [2024-11-20 13:30:02,744 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 41 remaining) [2024-11-20 13:30:02,744 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 41 remaining) [2024-11-20 13:30:02,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 41 remaining) [2024-11-20 13:30:02,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 41 remaining) [2024-11-20 13:30:02,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 41 remaining) [2024-11-20 13:30:02,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 41 remaining) [2024-11-20 13:30:02,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 41 remaining) [2024-11-20 13:30:02,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 41 remaining) [2024-11-20 13:30:02,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 41 remaining) [2024-11-20 13:30:02,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 41 remaining) [2024-11-20 13:30:02,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 41 remaining) [2024-11-20 13:30:02,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 41 remaining) [2024-11-20 13:30:02,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 41 remaining) [2024-11-20 13:30:02,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 41 remaining) [2024-11-20 13:30:02,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 41 remaining) [2024-11-20 13:30:02,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 41 remaining) [2024-11-20 13:30:02,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 41 remaining) [2024-11-20 13:30:02,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 41 remaining) [2024-11-20 13:30:02,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 41 remaining) [2024-11-20 13:30:02,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 41 remaining) [2024-11-20 13:30:02,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 41 remaining) [2024-11-20 13:30:02,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 13:30:02,747 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-20 13:30:02,748 WARN L244 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 13:30:02,748 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2024-11-20 13:30:02,785 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 13:30:02,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 117 transitions, 322 flow [2024-11-20 13:30:02,801 INFO L124 PetriNetUnfolderBase]: 9/189 cut-off events. [2024-11-20 13:30:02,801 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-11-20 13:30:02,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 189 events. 9/189 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 504 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 202. Up to 18 conditions per place. [2024-11-20 13:30:02,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 117 transitions, 322 flow [2024-11-20 13:30:02,804 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 117 transitions, 322 flow [2024-11-20 13:30:02,805 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:30:02,805 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@45996f5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:30:02,805 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-11-20 13:30:02,807 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 13:30:02,807 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2024-11-20 13:30:02,807 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 13:30:02,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:30:02,807 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:30:02,807 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2024-11-20 13:30:02,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:30:02,808 INFO L85 PathProgramCache]: Analyzing trace with hash -538606208, now seen corresponding path program 1 times [2024-11-20 13:30:02,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:30:02,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135976246] [2024-11-20 13:30:02,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:30:02,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:30:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:30:02,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:30:02,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:30:02,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135976246] [2024-11-20 13:30:02,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135976246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:30:02,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:30:02,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 13:30:02,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511717380] [2024-11-20 13:30:02,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:30:02,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-20 13:30:02,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:30:02,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-20 13:30:02,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 13:30:02,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 117 [2024-11-20 13:30:02,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 117 transitions, 322 flow. Second operand has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:30:02,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:30:02,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 117 [2024-11-20 13:30:02,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand