./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/04-mutex_27-base_rc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4a390ef5 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/04-mutex_27-base_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 b91c0e76ead39d37c0c1e44d79e923c90b028e42d77a4818013a56c3d1542d8d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 15:22:33,900 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 15:22:33,971 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-24 15:22:33,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 15:22:33,976 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 15:22:33,991 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 15:22:33,992 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 15:22:33,992 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 15:22:33,993 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 15:22:33,994 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 15:22:33,995 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 15:22:33,995 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 15:22:33,995 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 15:22:33,997 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 15:22:33,997 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 15:22:33,997 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 15:22:33,997 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 15:22:33,998 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 15:22:33,998 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 15:22:33,998 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 15:22:33,998 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 15:22:34,001 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 15:22:34,001 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-24 15:22:34,001 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 15:22:34,001 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 15:22:34,001 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 15:22:34,001 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 15:22:34,001 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 15:22:34,002 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 15:22:34,002 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 15:22:34,002 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 15:22:34,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 15:22:34,002 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 15:22:34,002 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 15:22:34,002 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 15:22:34,003 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 15:22:34,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 15:22:34,003 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 15:22:34,003 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 15:22:34,003 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 15:22:34,004 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 15:22:34,005 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b91c0e76ead39d37c0c1e44d79e923c90b028e42d77a4818013a56c3d1542d8d [2024-10-24 15:22:34,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 15:22:34,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 15:22:34,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 15:22:34,214 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 15:22:34,214 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 15:22:34,215 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_27-base_rc.i [2024-10-24 15:22:35,467 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 15:22:35,665 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 15:22:35,666 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_27-base_rc.i [2024-10-24 15:22:35,681 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/204740585/b628bb4b8b534dc295c3f9bc3cc8df8b/FLAG847dda5d8 [2024-10-24 15:22:35,691 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/204740585/b628bb4b8b534dc295c3f9bc3cc8df8b [2024-10-24 15:22:35,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 15:22:35,694 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 15:22:35,695 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 15:22:35,695 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 15:22:35,699 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 15:22:35,699 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:22:35" (1/1) ... [2024-10-24 15:22:35,700 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bc1cf6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:22:35, skipping insertion in model container [2024-10-24 15:22:35,700 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:22:35" (1/1) ... [2024-10-24 15:22:35,732 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 15:22:36,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 15:22:36,071 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 15:22:36,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 15:22:36,151 INFO L204 MainTranslator]: Completed translation [2024-10-24 15:22:36,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:22:36 WrapperNode [2024-10-24 15:22:36,152 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 15:22:36,152 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 15:22:36,153 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 15:22:36,153 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 15:22:36,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:22:36" (1/1) ... [2024-10-24 15:22:36,176 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:22:36" (1/1) ... [2024-10-24 15:22:36,199 INFO L138 Inliner]: procedures = 265, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 92 [2024-10-24 15:22:36,199 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 15:22:36,200 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 15:22:36,200 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 15:22:36,200 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 15:22:36,207 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:22:36" (1/1) ... [2024-10-24 15:22:36,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:22:36" (1/1) ... [2024-10-24 15:22:36,210 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:22:36" (1/1) ... [2024-10-24 15:22:36,213 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:22:36" (1/1) ... [2024-10-24 15:22:36,217 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:22:36" (1/1) ... [2024-10-24 15:22:36,221 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:22:36" (1/1) ... [2024-10-24 15:22:36,222 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:22:36" (1/1) ... [2024-10-24 15:22:36,227 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:22:36" (1/1) ... [2024-10-24 15:22:36,228 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 15:22:36,229 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 15:22:36,229 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 15:22:36,229 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 15:22:36,230 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:22:36" (1/1) ... [2024-10-24 15:22:36,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 15:22:36,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:22:36,259 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) [2024-10-24 15:22:36,262 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 [2024-10-24 15:22:36,298 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 15:22:36,299 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 15:22:36,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 15:22:36,299 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-24 15:22:36,299 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-24 15:22:36,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-24 15:22:36,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 15:22:36,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 15:22:36,301 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 15:22:36,446 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 15:22:36,448 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 15:22:36,568 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 15:22:36,568 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 15:22:36,595 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 15:22:36,595 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 15:22:36,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:22:36 BoogieIcfgContainer [2024-10-24 15:22:36,596 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 15:22:36,597 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 15:22:36,597 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 15:22:36,601 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 15:22:36,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:22:35" (1/3) ... [2024-10-24 15:22:36,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e96c15b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:22:36, skipping insertion in model container [2024-10-24 15:22:36,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:22:36" (2/3) ... [2024-10-24 15:22:36,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e96c15b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:22:36, skipping insertion in model container [2024-10-24 15:22:36,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:22:36" (3/3) ... [2024-10-24 15:22:36,604 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_27-base_rc.i [2024-10-24 15:22:36,619 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 15:22:36,620 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-10-24 15:22:36,620 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 15:22:36,677 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:22:36,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 97 transitions, 198 flow [2024-10-24 15:22:36,745 INFO L124 PetriNetUnfolderBase]: 1/96 cut-off events. [2024-10-24 15:22:36,745 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:22:36,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 96 events. 1/96 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 136 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2024-10-24 15:22:36,750 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 97 transitions, 198 flow [2024-10-24 15:22:36,756 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 96 transitions, 195 flow [2024-10-24 15:22:36,766 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:22:36,774 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;@5d11181d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:22:36,775 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-24 15:22:36,786 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:22:36,786 INFO L124 PetriNetUnfolderBase]: 0/35 cut-off events. [2024-10-24 15:22:36,786 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:22:36,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:22:36,789 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] [2024-10-24 15:22:36,789 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2024-10-24 15:22:36,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:22:36,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1470809619, now seen corresponding path program 1 times [2024-10-24 15:22:36,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:22:36,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84311231] [2024-10-24 15:22:36,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:22:36,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:22:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:22:37,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:22:37,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:22:37,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84311231] [2024-10-24 15:22:37,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84311231] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:22:37,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:22:37,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:22:37,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895680898] [2024-10-24 15:22:37,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:22:37,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:22:37,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:22:37,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:22:37,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:22:37,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 97 [2024-10-24 15:22:37,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 96 transitions, 195 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:22:37,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:22:37,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 97 [2024-10-24 15:22:37,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:22:37,172 INFO L124 PetriNetUnfolderBase]: 50/466 cut-off events. [2024-10-24 15:22:37,173 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 15:22:37,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 466 events. 50/466 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2763 event pairs, 8 based on Foata normal form. 0/411 useless extension candidates. Maximal degree in co-relation 550. Up to 57 conditions per place. [2024-10-24 15:22:37,177 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 19 selfloop transitions, 3 changer transitions 0/105 dead transitions. [2024-10-24 15:22:37,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 105 transitions, 257 flow [2024-10-24 15:22:37,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:22:37,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:22:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2024-10-24 15:22:37,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9450171821305842 [2024-10-24 15:22:37,191 INFO L175 Difference]: Start difference. First operand has 99 places, 96 transitions, 195 flow. Second operand 3 states and 275 transitions. [2024-10-24 15:22:37,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 105 transitions, 257 flow [2024-10-24 15:22:37,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 105 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 15:22:37,197 INFO L231 Difference]: Finished difference. Result has 102 places, 98 transitions, 216 flow [2024-10-24 15:22:37,198 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=102, PETRI_TRANSITIONS=98} [2024-10-24 15:22:37,202 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 3 predicate places. [2024-10-24 15:22:37,202 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 98 transitions, 216 flow [2024-10-24 15:22:37,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:22:37,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:22:37,204 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, 1] [2024-10-24 15:22:37,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 15:22:37,204 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2024-10-24 15:22:37,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:22:37,205 INFO L85 PathProgramCache]: Analyzing trace with hash 2075281972, now seen corresponding path program 1 times [2024-10-24 15:22:37,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:22:37,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193155707] [2024-10-24 15:22:37,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:22:37,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:22:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:22:37,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:22:37,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:22:37,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193155707] [2024-10-24 15:22:37,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193155707] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:22:37,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:22:37,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:22:37,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569883839] [2024-10-24 15:22:37,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:22:37,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:22:37,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:22:37,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:22:37,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:22:37,292 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 97 [2024-10-24 15:22:37,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 98 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:22:37,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:22:37,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 97 [2024-10-24 15:22:37,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:22:37,397 INFO L124 PetriNetUnfolderBase]: 82/536 cut-off events. [2024-10-24 15:22:37,398 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-10-24 15:22:37,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765 conditions, 536 events. 82/536 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3458 event pairs, 48 based on Foata normal form. 0/477 useless extension candidates. Maximal degree in co-relation 732. Up to 149 conditions per place. [2024-10-24 15:22:37,401 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 20 selfloop transitions, 5 changer transitions 0/105 dead transitions. [2024-10-24 15:22:37,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 105 transitions, 284 flow [2024-10-24 15:22:37,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:22:37,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:22:37,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2024-10-24 15:22:37,403 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9106529209621993 [2024-10-24 15:22:37,403 INFO L175 Difference]: Start difference. First operand has 102 places, 98 transitions, 216 flow. Second operand 3 states and 265 transitions. [2024-10-24 15:22:37,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 105 transitions, 284 flow [2024-10-24 15:22:37,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 105 transitions, 276 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 15:22:37,406 INFO L231 Difference]: Finished difference. Result has 104 places, 101 transitions, 246 flow [2024-10-24 15:22:37,406 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=104, PETRI_TRANSITIONS=101} [2024-10-24 15:22:37,407 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 5 predicate places. [2024-10-24 15:22:37,407 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 101 transitions, 246 flow [2024-10-24 15:22:37,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:22:37,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:22:37,407 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, 1, 1, 1, 1, 1, 1] [2024-10-24 15:22:37,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 15:22:37,408 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2024-10-24 15:22:37,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:22:37,408 INFO L85 PathProgramCache]: Analyzing trace with hash 297734247, now seen corresponding path program 1 times [2024-10-24 15:22:37,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:22:37,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474001739] [2024-10-24 15:22:37,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:22:37,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:22:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:22:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:22:37,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:22:37,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474001739] [2024-10-24 15:22:37,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474001739] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:22:37,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:22:37,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 15:22:37,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102744500] [2024-10-24 15:22:37,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:22:37,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:22:37,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:22:37,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:22:37,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:22:37,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 97 [2024-10-24 15:22:37,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 101 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:22:37,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:22:37,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 97 [2024-10-24 15:22:37,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:22:37,613 INFO L124 PetriNetUnfolderBase]: 20/317 cut-off events. [2024-10-24 15:22:37,614 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-24 15:22:37,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 317 events. 20/317 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1519 event pairs, 12 based on Foata normal form. 2/294 useless extension candidates. Maximal degree in co-relation 378. Up to 43 conditions per place. [2024-10-24 15:22:37,617 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 10 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2024-10-24 15:22:37,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 101 transitions, 260 flow [2024-10-24 15:22:37,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:22:37,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:22:37,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2024-10-24 15:22:37,618 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9587628865979382 [2024-10-24 15:22:37,618 INFO L175 Difference]: Start difference. First operand has 104 places, 101 transitions, 246 flow. Second operand 3 states and 279 transitions. [2024-10-24 15:22:37,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 101 transitions, 260 flow [2024-10-24 15:22:37,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 101 transitions, 242 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-10-24 15:22:37,621 INFO L231 Difference]: Finished difference. Result has 101 places, 99 transitions, 232 flow [2024-10-24 15:22:37,621 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=101, PETRI_TRANSITIONS=99} [2024-10-24 15:22:37,622 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 2 predicate places. [2024-10-24 15:22:37,622 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 99 transitions, 232 flow [2024-10-24 15:22:37,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:22:37,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:22:37,623 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:22:37,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 15:22:37,623 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2024-10-24 15:22:37,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:22:37,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1917517812, now seen corresponding path program 1 times [2024-10-24 15:22:37,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:22:37,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787321175] [2024-10-24 15:22:37,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:22:37,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:22:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:22:37,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:22:37,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:22:37,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787321175] [2024-10-24 15:22:37,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787321175] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:22:37,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:22:37,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:22:37,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590941800] [2024-10-24 15:22:37,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:22:37,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:22:37,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:22:37,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:22:37,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:22:37,695 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2024-10-24 15:22:37,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 99 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:22:37,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:22:37,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2024-10-24 15:22:37,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:22:37,784 INFO L124 PetriNetUnfolderBase]: 99/649 cut-off events. [2024-10-24 15:22:37,785 INFO L125 PetriNetUnfolderBase]: For 96/100 co-relation queries the response was YES. [2024-10-24 15:22:37,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001 conditions, 649 events. 99/649 cut-off events. For 96/100 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4376 event pairs, 31 based on Foata normal form. 0/612 useless extension candidates. Maximal degree in co-relation 968. Up to 149 conditions per place. [2024-10-24 15:22:37,788 INFO L140 encePairwiseOnDemand]: 88/97 looper letters, 25 selfloop transitions, 6 changer transitions 3/109 dead transitions. [2024-10-24 15:22:37,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 109 transitions, 336 flow [2024-10-24 15:22:37,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:22:37,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:22:37,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2024-10-24 15:22:37,790 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9072164948453608 [2024-10-24 15:22:37,791 INFO L175 Difference]: Start difference. First operand has 101 places, 99 transitions, 232 flow. Second operand 3 states and 264 transitions. [2024-10-24 15:22:37,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 109 transitions, 336 flow [2024-10-24 15:22:37,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 109 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 15:22:37,794 INFO L231 Difference]: Finished difference. Result has 102 places, 99 transitions, 256 flow [2024-10-24 15:22:37,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=102, PETRI_TRANSITIONS=99} [2024-10-24 15:22:37,795 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 3 predicate places. [2024-10-24 15:22:37,796 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 99 transitions, 256 flow [2024-10-24 15:22:37,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:22:37,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:22:37,796 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:22:37,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 15:22:37,797 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2024-10-24 15:22:37,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:22:37,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1077198669, now seen corresponding path program 1 times [2024-10-24 15:22:37,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:22:37,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640182931] [2024-10-24 15:22:37,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:22:37,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:22:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:22:37,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:22:37,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:22:37,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640182931] [2024-10-24 15:22:37,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640182931] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:22:37,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:22:37,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:22:37,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066502796] [2024-10-24 15:22:37,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:22:37,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:22:37,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:22:37,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:22:37,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:22:37,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2024-10-24 15:22:37,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 99 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:22:37,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:22:37,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2024-10-24 15:22:37,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:22:37,933 INFO L124 PetriNetUnfolderBase]: 123/749 cut-off events. [2024-10-24 15:22:37,933 INFO L125 PetriNetUnfolderBase]: For 236/246 co-relation queries the response was YES. [2024-10-24 15:22:37,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1324 conditions, 749 events. 123/749 cut-off events. For 236/246 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5360 event pairs, 70 based on Foata normal form. 0/713 useless extension candidates. Maximal degree in co-relation 1290. Up to 244 conditions per place. [2024-10-24 15:22:37,936 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 26 selfloop transitions, 3 changer transitions 3/106 dead transitions. [2024-10-24 15:22:37,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 106 transitions, 344 flow [2024-10-24 15:22:37,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:22:37,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:22:37,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2024-10-24 15:22:37,938 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8900343642611683 [2024-10-24 15:22:37,938 INFO L175 Difference]: Start difference. First operand has 102 places, 99 transitions, 256 flow. Second operand 3 states and 259 transitions. [2024-10-24 15:22:37,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 106 transitions, 344 flow [2024-10-24 15:22:37,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 106 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 15:22:37,942 INFO L231 Difference]: Finished difference. Result has 104 places, 100 transitions, 266 flow [2024-10-24 15:22:37,943 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=104, PETRI_TRANSITIONS=100} [2024-10-24 15:22:37,944 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 5 predicate places. [2024-10-24 15:22:37,944 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 100 transitions, 266 flow [2024-10-24 15:22:37,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:22:37,945 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:22:37,945 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:22:37,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 15:22:37,946 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2024-10-24 15:22:37,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:22:37,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1011580688, now seen corresponding path program 1 times [2024-10-24 15:22:37,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:22:37,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118421103] [2024-10-24 15:22:37,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:22:37,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:22:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:22:37,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:22:37,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:22:37,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118421103] [2024-10-24 15:22:37,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118421103] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:22:37,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:22:37,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:22:37,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022186683] [2024-10-24 15:22:37,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:22:37,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:22:37,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:22:37,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:22:37,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:22:38,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2024-10-24 15:22:38,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 100 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:22:38,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:22:38,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2024-10-24 15:22:38,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:22:38,068 INFO L124 PetriNetUnfolderBase]: 116/762 cut-off events. [2024-10-24 15:22:38,068 INFO L125 PetriNetUnfolderBase]: For 259/268 co-relation queries the response was YES. [2024-10-24 15:22:38,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1366 conditions, 762 events. 116/762 cut-off events. For 259/268 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5529 event pairs, 65 based on Foata normal form. 0/727 useless extension candidates. Maximal degree in co-relation 1331. Up to 249 conditions per place. [2024-10-24 15:22:38,070 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 25 selfloop transitions, 3 changer transitions 5/107 dead transitions. [2024-10-24 15:22:38,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 107 transitions, 356 flow [2024-10-24 15:22:38,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:22:38,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:22:38,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2024-10-24 15:22:38,071 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8900343642611683 [2024-10-24 15:22:38,072 INFO L175 Difference]: Start difference. First operand has 104 places, 100 transitions, 266 flow. Second operand 3 states and 259 transitions. [2024-10-24 15:22:38,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 107 transitions, 356 flow [2024-10-24 15:22:38,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 107 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 15:22:38,074 INFO L231 Difference]: Finished difference. Result has 106 places, 99 transitions, 276 flow [2024-10-24 15:22:38,074 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=276, PETRI_PLACES=106, PETRI_TRANSITIONS=99} [2024-10-24 15:22:38,074 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 7 predicate places. [2024-10-24 15:22:38,075 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 99 transitions, 276 flow [2024-10-24 15:22:38,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:22:38,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:22:38,075 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, 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] [2024-10-24 15:22:38,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 15:22:38,075 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2024-10-24 15:22:38,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:22:38,076 INFO L85 PathProgramCache]: Analyzing trace with hash 769880707, now seen corresponding path program 1 times [2024-10-24 15:22:38,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:22:38,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175702414] [2024-10-24 15:22:38,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:22:38,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:22:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:22:38,094 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:22:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:22:38,138 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:22:38,139 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:22:38,140 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 13 remaining) [2024-10-24 15:22:38,142 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2024-10-24 15:22:38,142 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 13 remaining) [2024-10-24 15:22:38,143 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2024-10-24 15:22:38,143 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2024-10-24 15:22:38,144 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2024-10-24 15:22:38,144 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2024-10-24 15:22:38,144 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2024-10-24 15:22:38,144 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2024-10-24 15:22:38,144 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2024-10-24 15:22:38,144 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2024-10-24 15:22:38,144 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2024-10-24 15:22:38,145 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2024-10-24 15:22:38,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 15:22:38,145 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:22:38,193 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-24 15:22:38,193 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 15:22:38,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:22:38 BasicIcfg [2024-10-24 15:22:38,197 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 15:22:38,198 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 15:22:38,198 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 15:22:38,198 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 15:22:38,198 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:22:36" (3/4) ... [2024-10-24 15:22:38,200 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-24 15:22:38,200 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 15:22:38,201 INFO L158 Benchmark]: Toolchain (without parser) took 2506.83ms. Allocated memory was 167.8MB in the beginning and 251.7MB in the end (delta: 83.9MB). Free memory was 109.3MB in the beginning and 140.8MB in the end (delta: -31.5MB). Peak memory consumption was 53.4MB. Max. memory is 16.1GB. [2024-10-24 15:22:38,201 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 167.8MB. Free memory is still 131.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 15:22:38,202 INFO L158 Benchmark]: CACSL2BoogieTranslator took 457.10ms. Allocated memory is still 167.8MB. Free memory was 108.8MB in the beginning and 78.9MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-10-24 15:22:38,202 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.85ms. Allocated memory is still 167.8MB. Free memory was 78.4MB in the beginning and 76.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 15:22:38,202 INFO L158 Benchmark]: Boogie Preprocessor took 28.59ms. Allocated memory is still 167.8MB. Free memory was 76.3MB in the beginning and 74.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 15:22:38,202 INFO L158 Benchmark]: RCFGBuilder took 366.89ms. Allocated memory is still 167.8MB. Free memory was 74.7MB in the beginning and 125.5MB in the end (delta: -50.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 15:22:38,203 INFO L158 Benchmark]: TraceAbstraction took 1600.56ms. Allocated memory was 167.8MB in the beginning and 251.7MB in the end (delta: 83.9MB). Free memory was 125.0MB in the beginning and 140.8MB in the end (delta: -15.8MB). Peak memory consumption was 70.2MB. Max. memory is 16.1GB. [2024-10-24 15:22:38,203 INFO L158 Benchmark]: Witness Printer took 2.49ms. Allocated memory is still 251.7MB. Free memory is still 140.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 15:22:38,207 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 167.8MB. Free memory is still 131.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 457.10ms. Allocated memory is still 167.8MB. Free memory was 108.8MB in the beginning and 78.9MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.85ms. Allocated memory is still 167.8MB. Free memory was 78.4MB in the beginning and 76.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.59ms. Allocated memory is still 167.8MB. Free memory was 76.3MB in the beginning and 74.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 366.89ms. Allocated memory is still 167.8MB. Free memory was 74.7MB in the beginning and 125.5MB in the end (delta: -50.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1600.56ms. Allocated memory was 167.8MB in the beginning and 251.7MB in the end (delta: 83.9MB). Free memory was 125.0MB in the beginning and 140.8MB in the end (delta: -15.8MB). Peak memory consumption was 70.2MB. Max. memory is 16.1GB. * Witness Printer took 2.49ms. Allocated memory is still 251.7MB. Free memory is still 140.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - DataRaceFoundResult [Line: 944]: Data race detected Data race detected The following path leads to a data race: [L917] 0 int global; VAL [global=0] [L918] 0 pthread_mutex_t gm = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; VAL [global=0, gm={1:0}] [L927] 0 void (*f)(void) = good; VAL [f={-1:0}, global=0, gm={1:0}] [L928] 0 pthread_mutex_t fm = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; VAL [f={-1:0}, fm={2:0}, global=0, gm={1:0}] [L938] 0 pthread_t id; VAL [f={-1:0}, fm={2:0}, global=0, gm={1:0}] [L939] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [f={-1:0}, fm={2:0}, global=0, gm={1:0}, id=-1] [L941] 0 f = bad VAL [f={-1:2}, fm={2:0}, global=0, gm={1:0}, id=-1] [L930] 1 void (*g)(void); VAL [\old(arg)={0:0}, arg={0:0}, f={-1:2}, fm={2:0}, global=0, gm={1:0}] [L932] 1 g = f VAL [\old(arg)={0:0}, arg={0:0}, f={-1:2}, fm={2:0}, g={-1:2}, global=0, gm={1:0}] [L934] CALL 1 g() [L920] 1 global++ VAL [f={-1:2}, fm={2:0}, global=0, gm={1:0}] [L920] 1 global++ VAL [f={-1:2}, fm={2:0}, global=1, gm={1:0}] [L944] 0 printf("global: %d\n", global) VAL [f={-1:2}, fm={2:0}, global=1, gm={1:0}, id=-1] Now there is a data race on ~global~0 between C: global++ [920] and C: printf("global: %d\n", global) [944] - UnprovableResult [Line: 941]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 939]: 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: 932]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 920]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 924]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 920]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 924]: 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, 144 locations, 13 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: 1.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 145 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 238 IncrementalHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 27 mSDtfsCounter, 238 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=276occurred in iteration=6, InterpolantAutomatonStates: 18, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 290 NumberOfCodeBlocks, 290 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 225 ConstructedInterpolants, 0 QuantifiedInterpolants, 265 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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! [2024-10-24 15:22:38,231 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