./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/goblint-regression/05-lval_ls_09-idxsense_rc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 61a67961 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/goblint-regression/05-lval_ls_09-idxsense_rc.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 0e635f0fe47aceede1c472bdc8d824736c973da1578eefbb4d4eeab774d2111f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 17:04:18,590 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 17:04:18,666 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-14 17:04:18,670 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 17:04:18,672 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 17:04:18,700 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 17:04:18,701 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 17:04:18,701 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 17:04:18,702 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 17:04:18,703 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 17:04:18,703 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 17:04:18,704 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 17:04:18,705 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 17:04:18,707 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 17:04:18,707 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 17:04:18,707 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 17:04:18,708 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 17:04:18,708 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 17:04:18,712 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 17:04:18,712 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 17:04:18,712 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 17:04:18,713 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 17:04:18,713 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-14 17:04:18,714 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 17:04:18,714 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 17:04:18,714 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 17:04:18,714 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 17:04:18,715 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 17:04:18,715 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 17:04:18,715 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 17:04:18,715 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 17:04:18,716 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:04:18,716 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 17:04:18,716 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 17:04:18,717 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 17:04:18,718 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 17:04:18,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 17:04:18,719 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 17:04:18,719 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 17:04:18,719 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 17:04:18,720 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 17:04:18,720 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e635f0fe47aceede1c472bdc8d824736c973da1578eefbb4d4eeab774d2111f [2024-10-14 17:04:18,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 17:04:19,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 17:04:19,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 17:04:19,019 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 17:04:19,020 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 17:04:19,022 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/05-lval_ls_09-idxsense_rc.i [2024-10-14 17:04:20,543 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 17:04:20,798 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 17:04:20,799 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/05-lval_ls_09-idxsense_rc.i [2024-10-14 17:04:20,815 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf66dab32/8307ba6ed75049e7af2ccb4b6bc9246b/FLAGfd92bffc3 [2024-10-14 17:04:20,829 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf66dab32/8307ba6ed75049e7af2ccb4b6bc9246b [2024-10-14 17:04:20,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 17:04:20,833 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 17:04:20,836 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 17:04:20,837 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 17:04:20,842 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 17:04:20,844 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:04:20" (1/1) ... [2024-10-14 17:04:20,845 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ec2c9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:20, skipping insertion in model container [2024-10-14 17:04:20,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:04:20" (1/1) ... [2024-10-14 17:04:20,895 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 17:04:21,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:04:21,239 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 17:04:21,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:04:21,340 INFO L204 MainTranslator]: Completed translation [2024-10-14 17:04:21,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:21 WrapperNode [2024-10-14 17:04:21,345 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 17:04:21,346 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 17:04:21,346 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 17:04:21,347 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 17:04:21,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:21" (1/1) ... [2024-10-14 17:04:21,387 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:21" (1/1) ... [2024-10-14 17:04:21,409 INFO L138 Inliner]: procedures = 161, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2024-10-14 17:04:21,412 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 17:04:21,413 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 17:04:21,413 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 17:04:21,413 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 17:04:21,422 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:21" (1/1) ... [2024-10-14 17:04:21,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:21" (1/1) ... [2024-10-14 17:04:21,425 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:21" (1/1) ... [2024-10-14 17:04:21,426 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:21" (1/1) ... [2024-10-14 17:04:21,434 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:21" (1/1) ... [2024-10-14 17:04:21,438 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:21" (1/1) ... [2024-10-14 17:04:21,440 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:21" (1/1) ... [2024-10-14 17:04:21,441 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:21" (1/1) ... [2024-10-14 17:04:21,443 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 17:04:21,444 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 17:04:21,444 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 17:04:21,444 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 17:04:21,445 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:21" (1/1) ... [2024-10-14 17:04:21,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:04:21,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:04:21,483 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) [2024-10-14 17:04:21,485 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 [2024-10-14 17:04:21,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-14 17:04:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-14 17:04:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 17:04:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 17:04:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-14 17:04:21,533 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-14 17:04:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 17:04:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 17:04:21,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 17:04:21,535 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 17:04:21,645 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 17:04:21,647 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 17:04:21,794 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 17:04:21,795 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 17:04:21,843 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 17:04:21,843 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 17:04:21,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:04:21 BoogieIcfgContainer [2024-10-14 17:04:21,844 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 17:04:21,846 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 17:04:21,846 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 17:04:21,850 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 17:04:21,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:04:20" (1/3) ... [2024-10-14 17:04:21,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18bd528d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:04:21, skipping insertion in model container [2024-10-14 17:04:21,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:21" (2/3) ... [2024-10-14 17:04:21,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18bd528d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:04:21, skipping insertion in model container [2024-10-14 17:04:21,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:04:21" (3/3) ... [2024-10-14 17:04:21,853 INFO L112 eAbstractionObserver]: Analyzing ICFG 05-lval_ls_09-idxsense_rc.i [2024-10-14 17:04:21,869 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 17:04:21,869 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-14 17:04:21,869 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 17:04:21,944 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 17:04:21,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 80 transitions, 164 flow [2024-10-14 17:04:22,053 INFO L124 PetriNetUnfolderBase]: 2/79 cut-off events. [2024-10-14 17:04:22,054 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 17:04:22,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 79 events. 2/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-10-14 17:04:22,059 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 80 transitions, 164 flow [2024-10-14 17:04:22,063 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 79 transitions, 161 flow [2024-10-14 17:04:22,077 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:04:22,086 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;@774b09fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:04:22,087 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-14 17:04:22,102 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 17:04:22,102 INFO L124 PetriNetUnfolderBase]: 2/40 cut-off events. [2024-10-14 17:04:22,102 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 17:04:22,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:04:22,104 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:04:22,104 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:04:22,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:04:22,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1156425411, now seen corresponding path program 1 times [2024-10-14 17:04:22,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:04:22,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168384446] [2024-10-14 17:04:22,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:22,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:04:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:22,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:22,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:04:22,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168384446] [2024-10-14 17:04:22,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168384446] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:04:22,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:04:22,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:04:22,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206044360] [2024-10-14 17:04:22,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:04:22,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:04:22,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:04:22,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:04:22,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:04:22,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 80 [2024-10-14 17:04:22,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:22,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:04:22,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 80 [2024-10-14 17:04:22,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:04:22,569 INFO L124 PetriNetUnfolderBase]: 7/163 cut-off events. [2024-10-14 17:04:22,570 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 17:04:22,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 163 events. 7/163 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 334 event pairs, 6 based on Foata normal form. 1/152 useless extension candidates. Maximal degree in co-relation 153. Up to 24 conditions per place. [2024-10-14 17:04:22,573 INFO L140 encePairwiseOnDemand]: 76/80 looper letters, 10 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-10-14 17:04:22,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 185 flow [2024-10-14 17:04:22,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:04:22,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:04:22,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2024-10-14 17:04:22,587 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9125 [2024-10-14 17:04:22,588 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 161 flow. Second operand 3 states and 219 transitions. [2024-10-14 17:04:22,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 185 flow [2024-10-14 17:04:22,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 79 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 17:04:22,595 INFO L231 Difference]: Finished difference. Result has 83 places, 79 transitions, 170 flow [2024-10-14 17:04:22,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=83, PETRI_TRANSITIONS=79} [2024-10-14 17:04:22,601 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 2 predicate places. [2024-10-14 17:04:22,601 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 79 transitions, 170 flow [2024-10-14 17:04:22,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:22,601 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:04:22,601 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:04:22,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 17:04:22,602 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:04:22,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:04:22,603 INFO L85 PathProgramCache]: Analyzing trace with hash -547861347, now seen corresponding path program 1 times [2024-10-14 17:04:22,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:04:22,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95840597] [2024-10-14 17:04:22,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:22,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:04:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:22,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:22,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:04:22,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95840597] [2024-10-14 17:04:22,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95840597] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:04:22,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128329921] [2024-10-14 17:04:22,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:22,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:04:22,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:04:22,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:04:22,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 17:04:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:22,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 17:04:22,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:04:22,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:22,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:04:23,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:23,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128329921] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:04:23,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:04:23,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-14 17:04:23,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807032939] [2024-10-14 17:04:23,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:04:23,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 17:04:23,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:04:23,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 17:04:23,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 17:04:23,093 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 80 [2024-10-14 17:04:23,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 79 transitions, 170 flow. Second operand has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:23,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:04:23,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 80 [2024-10-14 17:04:23,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:04:23,259 INFO L124 PetriNetUnfolderBase]: 7/170 cut-off events. [2024-10-14 17:04:23,262 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 17:04:23,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 170 events. 7/170 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 330 event pairs, 6 based on Foata normal form. 2/160 useless extension candidates. Maximal degree in co-relation 190. Up to 24 conditions per place. [2024-10-14 17:04:23,263 INFO L140 encePairwiseOnDemand]: 74/80 looper letters, 14 selfloop transitions, 9 changer transitions 0/87 dead transitions. [2024-10-14 17:04:23,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 87 transitions, 234 flow [2024-10-14 17:04:23,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 17:04:23,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 17:04:23,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 610 transitions. [2024-10-14 17:04:23,268 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8472222222222222 [2024-10-14 17:04:23,268 INFO L175 Difference]: Start difference. First operand has 83 places, 79 transitions, 170 flow. Second operand 9 states and 610 transitions. [2024-10-14 17:04:23,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 87 transitions, 234 flow [2024-10-14 17:04:23,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 87 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 17:04:23,271 INFO L231 Difference]: Finished difference. Result has 93 places, 85 transitions, 218 flow [2024-10-14 17:04:23,271 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=93, PETRI_TRANSITIONS=85} [2024-10-14 17:04:23,272 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 12 predicate places. [2024-10-14 17:04:23,274 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 85 transitions, 218 flow [2024-10-14 17:04:23,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:23,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:04:23,276 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:04:23,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 17:04:23,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:04:23,477 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:04:23,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:04:23,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1968317347, now seen corresponding path program 2 times [2024-10-14 17:04:23,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:04:23,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526254064] [2024-10-14 17:04:23,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:23,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:04:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:23,692 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:23,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:04:23,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526254064] [2024-10-14 17:04:23,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526254064] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:04:23,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865886889] [2024-10-14 17:04:23,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 17:04:23,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:04:23,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:04:23,697 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:04:23,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 17:04:23,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 17:04:23,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 17:04:23,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 17:04:23,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:04:23,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 17:04:23,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-10-14 17:04:23,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 17:04:23,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-10-14 17:04:24,011 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 17:04:24,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-10-14 17:04:24,050 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 17:04:24,051 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 17:04:24,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865886889] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:04:24,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 17:04:24,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2024-10-14 17:04:24,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407299960] [2024-10-14 17:04:24,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:04:24,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 17:04:24,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:04:24,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 17:04:24,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-10-14 17:04:24,215 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 80 [2024-10-14 17:04:24,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 85 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 52.142857142857146) internal successors, (365), 7 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:24,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:04:24,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 80 [2024-10-14 17:04:24,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:04:24,578 INFO L124 PetriNetUnfolderBase]: 261/950 cut-off events. [2024-10-14 17:04:24,579 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-14 17:04:24,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1553 conditions, 950 events. 261/950 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6025 event pairs, 67 based on Foata normal form. 0/915 useless extension candidates. Maximal degree in co-relation 1497. Up to 256 conditions per place. [2024-10-14 17:04:24,594 INFO L140 encePairwiseOnDemand]: 57/80 looper letters, 87 selfloop transitions, 43 changer transitions 0/187 dead transitions. [2024-10-14 17:04:24,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 187 transitions, 682 flow [2024-10-14 17:04:24,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 17:04:24,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 17:04:24,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 489 transitions. [2024-10-14 17:04:24,598 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8732142857142857 [2024-10-14 17:04:24,598 INFO L175 Difference]: Start difference. First operand has 93 places, 85 transitions, 218 flow. Second operand 7 states and 489 transitions. [2024-10-14 17:04:24,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 187 transitions, 682 flow [2024-10-14 17:04:24,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 187 transitions, 676 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-14 17:04:24,604 INFO L231 Difference]: Finished difference. Result has 103 places, 131 transitions, 531 flow [2024-10-14 17:04:24,604 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=531, PETRI_PLACES=103, PETRI_TRANSITIONS=131} [2024-10-14 17:04:24,605 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 22 predicate places. [2024-10-14 17:04:24,605 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 131 transitions, 531 flow [2024-10-14 17:04:24,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.142857142857146) internal successors, (365), 7 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:24,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:04:24,606 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:04:24,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 17:04:24,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-14 17:04:24,807 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:04:24,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:04:24,808 INFO L85 PathProgramCache]: Analyzing trace with hash -898922526, now seen corresponding path program 1 times [2024-10-14 17:04:24,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:04:24,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111036050] [2024-10-14 17:04:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:24,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:04:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:25,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:04:25,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111036050] [2024-10-14 17:04:25,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111036050] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:04:25,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199053646] [2024-10-14 17:04:25,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:25,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:04:25,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:04:25,016 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:04:25,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 17:04:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:25,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 17:04:25,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:04:25,154 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:25,155 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:04:25,248 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:25,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199053646] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:04:25,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:04:25,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-10-14 17:04:25,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756635141] [2024-10-14 17:04:25,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:04:25,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 17:04:25,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:04:25,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 17:04:25,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-14 17:04:25,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 80 [2024-10-14 17:04:25,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 131 transitions, 531 flow. Second operand has 18 states, 18 states have (on average 67.0) internal successors, (1206), 18 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:25,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:04:25,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 80 [2024-10-14 17:04:25,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:04:25,574 INFO L124 PetriNetUnfolderBase]: 122/720 cut-off events. [2024-10-14 17:04:25,574 INFO L125 PetriNetUnfolderBase]: For 129/142 co-relation queries the response was YES. [2024-10-14 17:04:25,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1392 conditions, 720 events. 122/720 cut-off events. For 129/142 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4547 event pairs, 40 based on Foata normal form. 4/710 useless extension candidates. Maximal degree in co-relation 1258. Up to 125 conditions per place. [2024-10-14 17:04:25,580 INFO L140 encePairwiseOnDemand]: 74/80 looper letters, 18 selfloop transitions, 21 changer transitions 0/149 dead transitions. [2024-10-14 17:04:25,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 149 transitions, 697 flow [2024-10-14 17:04:25,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-14 17:04:25,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-14 17:04:25,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1408 transitions. [2024-10-14 17:04:25,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8380952380952381 [2024-10-14 17:04:25,585 INFO L175 Difference]: Start difference. First operand has 103 places, 131 transitions, 531 flow. Second operand 21 states and 1408 transitions. [2024-10-14 17:04:25,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 149 transitions, 697 flow [2024-10-14 17:04:25,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 149 transitions, 696 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 17:04:25,594 INFO L231 Difference]: Finished difference. Result has 127 places, 144 transitions, 660 flow [2024-10-14 17:04:25,595 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=660, PETRI_PLACES=127, PETRI_TRANSITIONS=144} [2024-10-14 17:04:25,596 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 46 predicate places. [2024-10-14 17:04:25,597 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 144 transitions, 660 flow [2024-10-14 17:04:25,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 67.0) internal successors, (1206), 18 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:25,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:04:25,598 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:04:25,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 17:04:25,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:04:25,799 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:04:25,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:04:25,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1028200290, now seen corresponding path program 2 times [2024-10-14 17:04:25,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:04:25,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596416140] [2024-10-14 17:04:25,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:25,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:04:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:26,136 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:26,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:04:26,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596416140] [2024-10-14 17:04:26,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596416140] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:04:26,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990284686] [2024-10-14 17:04:26,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 17:04:26,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:04:26,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:04:26,142 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:04:26,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 17:04:26,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 17:04:26,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 17:04:26,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 17:04:26,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:04:26,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 17:04:26,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-10-14 17:04:26,393 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 17:04:26,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-10-14 17:04:26,439 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 17:04:26,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-10-14 17:04:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-14 17:04:26,481 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 17:04:26,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990284686] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:04:26,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 17:04:26,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [17] total 22 [2024-10-14 17:04:26,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759680732] [2024-10-14 17:04:26,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:04:26,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 17:04:26,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:04:26,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 17:04:26,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2024-10-14 17:04:26,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 80 [2024-10-14 17:04:26,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 144 transitions, 660 flow. Second operand has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:26,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:04:26,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 80 [2024-10-14 17:04:26,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:04:26,970 INFO L124 PetriNetUnfolderBase]: 417/1364 cut-off events. [2024-10-14 17:04:26,971 INFO L125 PetriNetUnfolderBase]: For 621/656 co-relation queries the response was YES. [2024-10-14 17:04:26,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3369 conditions, 1364 events. 417/1364 cut-off events. For 621/656 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9214 event pairs, 108 based on Foata normal form. 21/1369 useless extension candidates. Maximal degree in co-relation 3228. Up to 601 conditions per place. [2024-10-14 17:04:26,980 INFO L140 encePairwiseOnDemand]: 62/80 looper letters, 98 selfloop transitions, 54 changer transitions 6/227 dead transitions. [2024-10-14 17:04:26,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 227 transitions, 1328 flow [2024-10-14 17:04:26,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 17:04:26,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 17:04:26,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 448 transitions. [2024-10-14 17:04:26,982 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8 [2024-10-14 17:04:26,983 INFO L175 Difference]: Start difference. First operand has 127 places, 144 transitions, 660 flow. Second operand 7 states and 448 transitions. [2024-10-14 17:04:26,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 227 transitions, 1328 flow [2024-10-14 17:04:26,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 227 transitions, 1304 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-10-14 17:04:26,991 INFO L231 Difference]: Finished difference. Result has 132 places, 195 transitions, 1145 flow [2024-10-14 17:04:26,991 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1145, PETRI_PLACES=132, PETRI_TRANSITIONS=195} [2024-10-14 17:04:26,992 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 51 predicate places. [2024-10-14 17:04:26,992 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 195 transitions, 1145 flow [2024-10-14 17:04:26,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:26,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:04:26,993 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:04:27,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 17:04:27,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:04:27,195 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:04:27,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:04:27,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2035936106, now seen corresponding path program 1 times [2024-10-14 17:04:27,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:04:27,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035081727] [2024-10-14 17:04:27,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:27,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:04:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:27,520 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:27,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:04:27,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035081727] [2024-10-14 17:04:27,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035081727] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:04:27,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825051422] [2024-10-14 17:04:27,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:27,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:04:27,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:04:27,524 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:04:27,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 17:04:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:27,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 17:04:27,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:04:27,725 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:27,726 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:04:27,956 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:27,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825051422] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:04:27,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:04:27,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-10-14 17:04:27,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241714932] [2024-10-14 17:04:27,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:04:27,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-14 17:04:27,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:04:27,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-14 17:04:27,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-10-14 17:04:28,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 80 [2024-10-14 17:04:28,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 195 transitions, 1145 flow. Second operand has 23 states, 23 states have (on average 67.08695652173913) internal successors, (1543), 23 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:28,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:04:28,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 80 [2024-10-14 17:04:28,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:04:28,451 INFO L124 PetriNetUnfolderBase]: 227/1070 cut-off events. [2024-10-14 17:04:28,451 INFO L125 PetriNetUnfolderBase]: For 965/994 co-relation queries the response was YES. [2024-10-14 17:04:28,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2794 conditions, 1070 events. 227/1070 cut-off events. For 965/994 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7335 event pairs, 39 based on Foata normal form. 7/1064 useless extension candidates. Maximal degree in co-relation 2571. Up to 212 conditions per place. [2024-10-14 17:04:28,459 INFO L140 encePairwiseOnDemand]: 74/80 looper letters, 21 selfloop transitions, 30 changer transitions 0/212 dead transitions. [2024-10-14 17:04:28,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 212 transitions, 1369 flow [2024-10-14 17:04:28,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-14 17:04:28,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-14 17:04:28,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2004 transitions. [2024-10-14 17:04:28,464 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.835 [2024-10-14 17:04:28,464 INFO L175 Difference]: Start difference. First operand has 132 places, 195 transitions, 1145 flow. Second operand 30 states and 2004 transitions. [2024-10-14 17:04:28,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 212 transitions, 1369 flow [2024-10-14 17:04:28,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 212 transitions, 1360 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-14 17:04:28,474 INFO L231 Difference]: Finished difference. Result has 164 places, 205 transitions, 1288 flow [2024-10-14 17:04:28,474 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1288, PETRI_PLACES=164, PETRI_TRANSITIONS=205} [2024-10-14 17:04:28,475 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 83 predicate places. [2024-10-14 17:04:28,475 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 205 transitions, 1288 flow [2024-10-14 17:04:28,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 67.08695652173913) internal successors, (1543), 23 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:28,476 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:04:28,477 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:04:28,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 17:04:28,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:04:28,678 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:04:28,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:04:28,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2036321072, now seen corresponding path program 2 times [2024-10-14 17:04:28,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:04:28,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537911572] [2024-10-14 17:04:28,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:28,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:04:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:29,152 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-14 17:04:29,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:04:29,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537911572] [2024-10-14 17:04:29,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537911572] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:04:29,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:04:29,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:04:29,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410392480] [2024-10-14 17:04:29,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:04:29,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:04:29,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:04:29,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:04:29,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:04:29,312 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 80 [2024-10-14 17:04:29,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 205 transitions, 1288 flow. Second operand has 6 states, 6 states have (on average 50.5) internal successors, (303), 6 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:29,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:04:29,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 80 [2024-10-14 17:04:29,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:04:29,716 INFO L124 PetriNetUnfolderBase]: 571/1759 cut-off events. [2024-10-14 17:04:29,717 INFO L125 PetriNetUnfolderBase]: For 2377/2425 co-relation queries the response was YES. [2024-10-14 17:04:29,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5481 conditions, 1759 events. 571/1759 cut-off events. For 2377/2425 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12238 event pairs, 127 based on Foata normal form. 25/1760 useless extension candidates. Maximal degree in co-relation 5256. Up to 841 conditions per place. [2024-10-14 17:04:29,731 INFO L140 encePairwiseOnDemand]: 63/80 looper letters, 120 selfloop transitions, 58 changer transitions 39/297 dead transitions. [2024-10-14 17:04:29,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 297 transitions, 2246 flow [2024-10-14 17:04:29,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:04:29,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:04:29,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 388 transitions. [2024-10-14 17:04:29,733 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8083333333333333 [2024-10-14 17:04:29,733 INFO L175 Difference]: Start difference. First operand has 164 places, 205 transitions, 1288 flow. Second operand 6 states and 388 transitions. [2024-10-14 17:04:29,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 297 transitions, 2246 flow [2024-10-14 17:04:29,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 297 transitions, 2200 flow, removed 5 selfloop flow, removed 18 redundant places. [2024-10-14 17:04:29,751 INFO L231 Difference]: Finished difference. Result has 155 places, 232 transitions, 1650 flow [2024-10-14 17:04:29,752 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1650, PETRI_PLACES=155, PETRI_TRANSITIONS=232} [2024-10-14 17:04:29,753 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 74 predicate places. [2024-10-14 17:04:29,753 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 232 transitions, 1650 flow [2024-10-14 17:04:29,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.5) internal successors, (303), 6 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:29,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:04:29,753 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:04:29,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 17:04:29,754 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:04:29,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:04:29,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1592623857, now seen corresponding path program 1 times [2024-10-14 17:04:29,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:04:29,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111429206] [2024-10-14 17:04:29,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:29,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:04:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:04:29,789 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 17:04:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:04:29,841 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 17:04:29,841 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 17:04:29,842 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 7 remaining) [2024-10-14 17:04:29,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2024-10-14 17:04:29,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-10-14 17:04:29,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2024-10-14 17:04:29,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2024-10-14 17:04:29,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2024-10-14 17:04:29,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2024-10-14 17:04:29,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 17:04:29,846 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1] [2024-10-14 17:04:29,904 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-14 17:04:29,904 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 17:04:29,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:04:29 BasicIcfg [2024-10-14 17:04:29,912 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 17:04:29,913 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 17:04:29,914 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 17:04:29,914 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 17:04:29,915 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:04:21" (3/4) ... [2024-10-14 17:04:29,917 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-14 17:04:29,918 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 17:04:29,918 INFO L158 Benchmark]: Toolchain (without parser) took 9084.88ms. Allocated memory was 174.1MB in the beginning and 289.4MB in the end (delta: 115.3MB). Free memory was 103.3MB in the beginning and 115.9MB in the end (delta: -12.6MB). Peak memory consumption was 103.8MB. Max. memory is 16.1GB. [2024-10-14 17:04:29,918 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 174.1MB. Free memory is still 128.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 17:04:29,919 INFO L158 Benchmark]: CACSL2BoogieTranslator took 508.85ms. Allocated memory is still 174.1MB. Free memory was 103.0MB in the beginning and 142.5MB in the end (delta: -39.6MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. [2024-10-14 17:04:29,919 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.63ms. Allocated memory is still 174.1MB. Free memory was 142.5MB in the beginning and 140.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 17:04:29,919 INFO L158 Benchmark]: Boogie Preprocessor took 30.17ms. Allocated memory is still 174.1MB. Free memory was 140.2MB in the beginning and 138.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 17:04:29,920 INFO L158 Benchmark]: RCFGBuilder took 399.78ms. Allocated memory is still 174.1MB. Free memory was 138.8MB in the beginning and 122.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-14 17:04:29,920 INFO L158 Benchmark]: TraceAbstraction took 8066.49ms. Allocated memory was 174.1MB in the beginning and 289.4MB in the end (delta: 115.3MB). Free memory was 121.3MB in the beginning and 115.9MB in the end (delta: 5.4MB). Peak memory consumption was 122.7MB. Max. memory is 16.1GB. [2024-10-14 17:04:29,920 INFO L158 Benchmark]: Witness Printer took 4.76ms. Allocated memory is still 289.4MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 17:04:29,921 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 174.1MB. Free memory is still 128.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 508.85ms. Allocated memory is still 174.1MB. Free memory was 103.0MB in the beginning and 142.5MB in the end (delta: -39.6MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.63ms. Allocated memory is still 174.1MB. Free memory was 142.5MB in the beginning and 140.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.17ms. Allocated memory is still 174.1MB. Free memory was 140.2MB in the beginning and 138.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 399.78ms. Allocated memory is still 174.1MB. Free memory was 138.8MB in the beginning and 122.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8066.49ms. Allocated memory was 174.1MB in the beginning and 289.4MB in the end (delta: 115.3MB). Free memory was 121.3MB in the beginning and 115.9MB in the end (delta: 5.4MB). Peak memory consumption was 122.7MB. Max. memory is 16.1GB. * Witness Printer took 4.76ms. Allocated memory is still 289.4MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - DataRaceFoundResult [Line: 693]: Data race detected Data race detected The following path leads to a data race: [L679] 0 int data[10]; VAL [data={1:0}] [L680] 0 pthread_mutex_t m[10]; VAL [data={1:0}, m={2:0}] [L688] 0 int i = 0; VAL [data={1:0}, i=0, m={2:0}] [L688] COND TRUE 0 i < 10 VAL [data={1:0}, i=0, m={2:0}] [L688] 0 i++ VAL [data={1:0}, i=1, m={2:0}] [L688] COND TRUE 0 i < 10 VAL [data={1:0}, i=1, m={2:0}] [L688] 0 i++ VAL [data={1:0}, i=2, m={2:0}] [L688] COND TRUE 0 i < 10 VAL [data={1:0}, i=2, m={2:0}] [L688] 0 i++ VAL [data={1:0}, i=3, m={2:0}] [L688] COND TRUE 0 i < 10 VAL [data={1:0}, i=3, m={2:0}] [L688] 0 i++ VAL [data={1:0}, i=4, m={2:0}] [L688] COND TRUE 0 i < 10 VAL [data={1:0}, i=4, m={2:0}] [L688] 0 i++ VAL [data={1:0}, i=5, m={2:0}] [L688] COND TRUE 0 i < 10 VAL [data={1:0}, i=5, m={2:0}] [L688] 0 i++ VAL [data={1:0}, i=6, m={2:0}] [L688] COND TRUE 0 i < 10 VAL [data={1:0}, i=6, m={2:0}] [L688] 0 i++ VAL [data={1:0}, i=7, m={2:0}] [L688] COND TRUE 0 i < 10 VAL [data={1:0}, i=7, m={2:0}] [L688] 0 i++ VAL [data={1:0}, i=8, m={2:0}] [L688] COND TRUE 0 i < 10 VAL [data={1:0}, i=8, m={2:0}] [L688] 0 i++ VAL [data={1:0}, i=9, m={2:0}] [L688] COND TRUE 0 i < 10 VAL [data={1:0}, i=9, m={2:0}] [L688] 0 i++ VAL [data={1:0}, i=10, m={2:0}] [L688] COND FALSE 0 !(i < 10) VAL [data={1:0}, i=10, m={2:0}] [L690] 0 pthread_t id; VAL [data={1:0}, m={2:0}] [L691] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [\old(arg)={0:0}, data={1:0}, id=-1, m={2:0}] [L683] EXPR 1 data[4] VAL [\old(arg)={0:0}, arg={0:0}, data={1:0}, m={2:0}] [L683] 1 data[4]++ VAL [\old(arg)={0:0}, arg={0:0}, data={1:0}, m={2:0}] [L693] EXPR 0 data[4] VAL [\old(arg)={0:0}, arg={0:0}, data={1:0}, id=-1, m={2:0}] [L693] 0 data[4]++ VAL [\old(arg)={0:0}, arg={0:0}, data={1:0}, id=-1, m={2:0}] [L683] 1 data[4]++ VAL [\old(arg)={0:0}, arg={0:0}, data={1:0}, m={2:0}] [L693] 0 data[4]++ VAL [\old(arg)={0:0}, arg={0:0}, data={1:0}, id=-1, m={2:0}] [L683] 1 data[4]++ VAL [\old(arg)={0:0}, arg={0:0}, data={1:0}, m={2:0}] [L693] 0 data[4]++ VAL [\old(arg)={0:0}, arg={0:0}, data={1:0}, id=-1, m={2:0}] Now there is a data race (on the heap) between C: data[4]++ [683] and C: data[4]++ [693] - UnprovableResult [Line: 693]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 691]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 683]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 683]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 107 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.9s, OverallIterations: 8, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 395 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 297 mSDsluCounter, 113 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 94 mSDsCounter, 122 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1184 IncrementalHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 122 mSolverCounterUnsat, 19 mSDtfsCounter, 1184 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 510 GetRequests, 383 SyntacticMatches, 11 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 822 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1650occurred in iteration=7, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 734 NumberOfCodeBlocks, 684 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 781 ConstructedInterpolants, 0 QuantifiedInterpolants, 1680 SizeOfPredicates, 22 NumberOfNonLiveVariables, 591 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 15 InterpolantComputations, 4 PerfectInterpolantSequences, 365/888 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-10-14 17:04:29,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE