./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.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 ec355916cf6ee76d4008e84bb2b3ecc632256e3b320d2f47b453f4ca1f46acbc --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 06:30:55,905 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:30:55,987 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-09 06:30:55,993 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:30:55,993 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:30:56,037 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:30:56,038 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:30:56,039 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:30:56,040 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:30:56,040 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:30:56,041 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 06:30:56,041 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 06:30:56,041 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 06:30:56,042 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:30:56,042 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:30:56,043 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:30:56,043 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:30:56,043 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:30:56,044 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:30:56,044 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:30:56,044 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:30:56,050 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:30:56,050 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-09 06:30:56,050 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:30:56,050 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 06:30:56,051 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:30:56,051 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:30:56,051 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:30:56,052 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:30:56,052 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 06:30:56,052 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:30:56,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 06:30:56,053 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:30:56,053 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:30:56,053 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:30:56,054 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 06:30:56,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:30:56,054 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:30:56,054 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 06:30:56,055 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 06:30:56,055 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:30:56,055 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec355916cf6ee76d4008e84bb2b3ecc632256e3b320d2f47b453f4ca1f46acbc [2024-11-09 06:30:56,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:30:56,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:30:56,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:30:56,438 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:30:56,439 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:30:56,440 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2024-11-09 06:30:58,129 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:30:58,429 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:30:58,429 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2024-11-09 06:30:58,444 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/295b4a2cc/a3ebc6759f494890a0efa1cb194e27c9/FLAG6d0fb80c1 [2024-11-09 06:30:58,459 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/295b4a2cc/a3ebc6759f494890a0efa1cb194e27c9 [2024-11-09 06:30:58,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:30:58,464 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:30:58,465 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:30:58,466 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:30:58,471 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:30:58,472 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:30:58" (1/1) ... [2024-11-09 06:30:58,475 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61885bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:58, skipping insertion in model container [2024-11-09 06:30:58,475 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:30:58" (1/1) ... [2024-11-09 06:30:58,525 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:30:58,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:30:58,945 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:30:58,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:30:59,037 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:30:59,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:59 WrapperNode [2024-11-09 06:30:59,038 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:30:59,039 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:30:59,040 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:30:59,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:30:59,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:59" (1/1) ... [2024-11-09 06:30:59,065 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:59" (1/1) ... [2024-11-09 06:30:59,097 INFO L138 Inliner]: procedures = 164, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 117 [2024-11-09 06:30:59,098 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:30:59,099 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:30:59,099 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:30:59,099 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:30:59,110 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:59" (1/1) ... [2024-11-09 06:30:59,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:59" (1/1) ... [2024-11-09 06:30:59,119 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:59" (1/1) ... [2024-11-09 06:30:59,119 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:59" (1/1) ... [2024-11-09 06:30:59,133 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:59" (1/1) ... [2024-11-09 06:30:59,141 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:59" (1/1) ... [2024-11-09 06:30:59,147 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:59" (1/1) ... [2024-11-09 06:30:59,149 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:59" (1/1) ... [2024-11-09 06:30:59,152 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:30:59,153 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:30:59,154 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:30:59,154 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:30:59,159 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:59" (1/1) ... [2024-11-09 06:30:59,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 06:30:59,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:30:59,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 06:30:59,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 06:30:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 06:30:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-09 06:30:59,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-09 06:30:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 06:30:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 06:30:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:30:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:30:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 06:30:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:30:59,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:30:59,261 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 06:30:59,439 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:30:59,441 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:30:59,716 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 06:30:59,716 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:30:59,756 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:30:59,757 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-09 06:30:59,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:30:59 BoogieIcfgContainer [2024-11-09 06:30:59,758 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:30:59,760 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:30:59,760 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:30:59,764 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:30:59,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:30:58" (1/3) ... [2024-11-09 06:30:59,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4afb10bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:30:59, skipping insertion in model container [2024-11-09 06:30:59,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:59" (2/3) ... [2024-11-09 06:30:59,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4afb10bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:30:59, skipping insertion in model container [2024-11-09 06:30:59,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:30:59" (3/3) ... [2024-11-09 06:30:59,768 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt.i [2024-11-09 06:30:59,788 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:30:59,788 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-11-09 06:30:59,788 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 06:30:59,883 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 06:30:59,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 130 transitions, 264 flow [2024-11-09 06:30:59,995 INFO L124 PetriNetUnfolderBase]: 12/139 cut-off events. [2024-11-09 06:30:59,996 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 06:31:00,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 139 events. 12/139 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 183 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 85. Up to 4 conditions per place. [2024-11-09 06:31:00,003 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 130 transitions, 264 flow [2024-11-09 06:31:00,008 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 130 transitions, 264 flow [2024-11-09 06:31:00,023 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:31:00,033 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;@7bacd7ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:31:00,037 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-09 06:31:00,058 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 06:31:00,059 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-09 06:31:00,059 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 06:31:00,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:00,060 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] [2024-11-09 06:31:00,061 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-09 06:31:00,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:00,067 INFO L85 PathProgramCache]: Analyzing trace with hash 221156214, now seen corresponding path program 1 times [2024-11-09 06:31:00,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:00,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920022195] [2024-11-09 06:31:00,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:00,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:01,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:31:01,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:01,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920022195] [2024-11-09 06:31:01,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920022195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:31:01,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:31:01,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:31:01,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136018647] [2024-11-09 06:31:01,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:31:01,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:31:01,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:01,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:31:01,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:31:01,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 130 [2024-11-09 06:31:01,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 130 transitions, 264 flow. Second operand has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:01,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:01,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 130 [2024-11-09 06:31:01,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:01,477 INFO L124 PetriNetUnfolderBase]: 5/121 cut-off events. [2024-11-09 06:31:01,478 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 06:31:01,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 121 events. 5/121 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 128 event pairs, 0 based on Foata normal form. 15/125 useless extension candidates. Maximal degree in co-relation 82. Up to 16 conditions per place. [2024-11-09 06:31:01,481 INFO L140 encePairwiseOnDemand]: 117/130 looper letters, 15 selfloop transitions, 5 changer transitions 0/117 dead transitions. [2024-11-09 06:31:01,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 117 transitions, 278 flow [2024-11-09 06:31:01,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:31:01,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 06:31:01,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 628 transitions. [2024-11-09 06:31:01,500 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8051282051282052 [2024-11-09 06:31:01,506 INFO L175 Difference]: Start difference. First operand has 122 places, 130 transitions, 264 flow. Second operand 6 states and 628 transitions. [2024-11-09 06:31:01,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 117 transitions, 278 flow [2024-11-09 06:31:01,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 117 transitions, 278 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 06:31:01,518 INFO L231 Difference]: Finished difference. Result has 120 places, 117 transitions, 248 flow [2024-11-09 06:31:01,521 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=248, PETRI_PLACES=120, PETRI_TRANSITIONS=117} [2024-11-09 06:31:01,527 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -2 predicate places. [2024-11-09 06:31:01,530 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 117 transitions, 248 flow [2024-11-09 06:31:01,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:01,531 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:01,532 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:31:01,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:31:01,533 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-09 06:31:01,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:01,534 INFO L85 PathProgramCache]: Analyzing trace with hash -497310968, now seen corresponding path program 1 times [2024-11-09 06:31:01,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:01,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558150556] [2024-11-09 06:31:01,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:01,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:01,603 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:31:01,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:01,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558150556] [2024-11-09 06:31:01,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558150556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:31:01,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:31:01,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:31:01,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468198899] [2024-11-09 06:31:01,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:31:01,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:31:01,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:01,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:31:01,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:31:01,645 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 130 [2024-11-09 06:31:01,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 117 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:01,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:01,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 130 [2024-11-09 06:31:01,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:01,681 INFO L124 PetriNetUnfolderBase]: 5/133 cut-off events. [2024-11-09 06:31:01,681 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 06:31:01,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 133 events. 5/133 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs, 0 based on Foata normal form. 1/124 useless extension candidates. Maximal degree in co-relation 98. Up to 11 conditions per place. [2024-11-09 06:31:01,682 INFO L140 encePairwiseOnDemand]: 127/130 looper letters, 9 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2024-11-09 06:31:01,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 118 transitions, 274 flow [2024-11-09 06:31:01,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:31:01,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 06:31:01,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2024-11-09 06:31:01,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8846153846153846 [2024-11-09 06:31:01,685 INFO L175 Difference]: Start difference. First operand has 120 places, 117 transitions, 248 flow. Second operand 3 states and 345 transitions. [2024-11-09 06:31:01,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 118 transitions, 274 flow [2024-11-09 06:31:01,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 118 transitions, 262 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 06:31:01,690 INFO L231 Difference]: Finished difference. Result has 118 places, 118 transitions, 250 flow [2024-11-09 06:31:01,691 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=118, PETRI_TRANSITIONS=118} [2024-11-09 06:31:01,692 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -4 predicate places. [2024-11-09 06:31:01,692 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 118 transitions, 250 flow [2024-11-09 06:31:01,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:01,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:01,693 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:31:01,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:31:01,694 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-09 06:31:01,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:01,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1275824240, now seen corresponding path program 1 times [2024-11-09 06:31:01,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:01,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106016413] [2024-11-09 06:31:01,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:01,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:01,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:31:01,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:01,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106016413] [2024-11-09 06:31:01,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106016413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:31:01,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270495598] [2024-11-09 06:31:01,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:01,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:01,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:31:01,864 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) [2024-11-09 06:31:01,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:31:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:01,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:31:01,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:31:02,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:31:02,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:31:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:31:02,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270495598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:31:02,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:31:02,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-09 06:31:02,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374157262] [2024-11-09 06:31:02,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:31:02,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:31:02,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:02,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:31:02,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:31:02,241 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 130 [2024-11-09 06:31:02,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 118 transitions, 250 flow. Second operand has 10 states, 10 states have (on average 109.9) internal successors, (1099), 10 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:02,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:02,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 130 [2024-11-09 06:31:02,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:02,368 INFO L124 PetriNetUnfolderBase]: 5/148 cut-off events. [2024-11-09 06:31:02,369 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 06:31:02,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 148 events. 5/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 98 event pairs, 0 based on Foata normal form. 2/140 useless extension candidates. Maximal degree in co-relation 133. Up to 11 conditions per place. [2024-11-09 06:31:02,370 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 13 selfloop transitions, 9 changer transitions 0/126 dead transitions. [2024-11-09 06:31:02,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 126 transitions, 312 flow [2024-11-09 06:31:02,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:31:02,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 06:31:02,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 996 transitions. [2024-11-09 06:31:02,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8512820512820513 [2024-11-09 06:31:02,378 INFO L175 Difference]: Start difference. First operand has 118 places, 118 transitions, 250 flow. Second operand 9 states and 996 transitions. [2024-11-09 06:31:02,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 126 transitions, 312 flow [2024-11-09 06:31:02,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 126 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 06:31:02,384 INFO L231 Difference]: Finished difference. Result has 128 places, 124 transitions, 298 flow [2024-11-09 06:31:02,387 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=298, PETRI_PLACES=128, PETRI_TRANSITIONS=124} [2024-11-09 06:31:02,388 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 6 predicate places. [2024-11-09 06:31:02,388 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 298 flow [2024-11-09 06:31:02,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 109.9) internal successors, (1099), 10 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:02,391 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:02,391 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:31:02,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 06:31:02,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:02,593 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-09 06:31:02,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:02,593 INFO L85 PathProgramCache]: Analyzing trace with hash -401858704, now seen corresponding path program 2 times [2024-11-09 06:31:02,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:02,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045432466] [2024-11-09 06:31:02,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:02,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:02,809 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:31:02,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:02,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045432466] [2024-11-09 06:31:02,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045432466] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:31:02,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395114684] [2024-11-09 06:31:02,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:31:02,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:02,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:31:02,813 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) [2024-11-09 06:31:02,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:31:02,916 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:31:02,916 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:31:02,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:31:02,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:31:03,019 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:31:03,019 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:31:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:31:03,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395114684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:31:03,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:31:03,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-09 06:31:03,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929664575] [2024-11-09 06:31:03,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:31:03,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 06:31:03,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:03,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 06:31:03,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:31:03,420 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 130 [2024-11-09 06:31:03,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 298 flow. Second operand has 15 states, 15 states have (on average 110.06666666666666) internal successors, (1651), 15 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:03,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:03,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 130 [2024-11-09 06:31:03,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:03,618 INFO L124 PetriNetUnfolderBase]: 5/187 cut-off events. [2024-11-09 06:31:03,618 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-09 06:31:03,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 187 events. 5/187 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 3/180 useless extension candidates. Maximal degree in co-relation 186. Up to 11 conditions per place. [2024-11-09 06:31:03,620 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 16 selfloop transitions, 18 changer transitions 0/138 dead transitions. [2024-11-09 06:31:03,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 138 transitions, 440 flow [2024-11-09 06:31:03,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 06:31:03,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 06:31:03,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1981 transitions. [2024-11-09 06:31:03,625 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8465811965811966 [2024-11-09 06:31:03,625 INFO L175 Difference]: Start difference. First operand has 128 places, 124 transitions, 298 flow. Second operand 18 states and 1981 transitions. [2024-11-09 06:31:03,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 138 transitions, 440 flow [2024-11-09 06:31:03,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 138 transitions, 428 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-09 06:31:03,631 INFO L231 Difference]: Finished difference. Result has 148 places, 134 transitions, 398 flow [2024-11-09 06:31:03,631 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=398, PETRI_PLACES=148, PETRI_TRANSITIONS=134} [2024-11-09 06:31:03,632 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 26 predicate places. [2024-11-09 06:31:03,632 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 134 transitions, 398 flow [2024-11-09 06:31:03,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 110.06666666666666) internal successors, (1651), 15 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:03,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:03,634 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:31:03,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 06:31:03,835 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,SelfDestructingSolverStorable3 [2024-11-09 06:31:03,836 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-09 06:31:03,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:03,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1053688312, now seen corresponding path program 3 times [2024-11-09 06:31:03,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:03,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569339105] [2024-11-09 06:31:03,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:03,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:31:03,906 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:31:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:31:03,969 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 06:31:03,970 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:31:03,971 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-09 06:31:03,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-11-09 06:31:03,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-11-09 06:31:03,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-11-09 06:31:03,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-11-09 06:31:03,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-11-09 06:31:03,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-11-09 06:31:03,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-11-09 06:31:03,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-11-09 06:31:03,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-11-09 06:31:03,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 06:31:03,976 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-09 06:31:03,979 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 06:31:03,979 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 06:31:04,028 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 06:31:04,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 205 transitions, 420 flow [2024-11-09 06:31:04,068 INFO L124 PetriNetUnfolderBase]: 21/225 cut-off events. [2024-11-09 06:31:04,068 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 06:31:04,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 225 events. 21/225 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 522 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 159. Up to 6 conditions per place. [2024-11-09 06:31:04,073 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 205 transitions, 420 flow [2024-11-09 06:31:04,077 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 205 transitions, 420 flow [2024-11-09 06:31:04,079 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:31:04,080 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;@7bacd7ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:31:04,080 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-09 06:31:04,089 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 06:31:04,090 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-09 06:31:04,090 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 06:31:04,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:04,090 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] [2024-11-09 06:31:04,091 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-09 06:31:04,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:04,092 INFO L85 PathProgramCache]: Analyzing trace with hash -52521821, now seen corresponding path program 1 times [2024-11-09 06:31:04,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:04,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842384867] [2024-11-09 06:31:04,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:04,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:31:04,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:04,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842384867] [2024-11-09 06:31:04,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842384867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:31:04,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:31:04,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:31:04,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392854502] [2024-11-09 06:31:04,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:31:04,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:31:04,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:04,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:31:04,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:31:04,624 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 205 [2024-11-09 06:31:04,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 205 transitions, 420 flow. Second operand has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:04,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:04,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 205 [2024-11-09 06:31:04,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:04,782 INFO L124 PetriNetUnfolderBase]: 134/852 cut-off events. [2024-11-09 06:31:04,782 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-09 06:31:04,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 852 events. 134/852 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5370 event pairs, 72 based on Foata normal form. 162/886 useless extension candidates. Maximal degree in co-relation 385. Up to 193 conditions per place. [2024-11-09 06:31:04,794 INFO L140 encePairwiseOnDemand]: 188/205 looper letters, 24 selfloop transitions, 5 changer transitions 0/186 dead transitions. [2024-11-09 06:31:04,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 186 transitions, 440 flow [2024-11-09 06:31:04,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:31:04,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 06:31:04,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1007 transitions. [2024-11-09 06:31:04,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8186991869918699 [2024-11-09 06:31:04,798 INFO L175 Difference]: Start difference. First operand has 191 places, 205 transitions, 420 flow. Second operand 6 states and 1007 transitions. [2024-11-09 06:31:04,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 186 transitions, 440 flow [2024-11-09 06:31:04,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 186 transitions, 440 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 06:31:04,803 INFO L231 Difference]: Finished difference. Result has 187 places, 186 transitions, 392 flow [2024-11-09 06:31:04,803 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=392, PETRI_PLACES=187, PETRI_TRANSITIONS=186} [2024-11-09 06:31:04,804 INFO L277 CegarLoopForPetriNet]: 191 programPoint places, -4 predicate places. [2024-11-09 06:31:04,804 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 186 transitions, 392 flow [2024-11-09 06:31:04,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:04,806 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:04,806 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:31:04,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 06:31:04,806 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-09 06:31:04,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:04,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1085319016, now seen corresponding path program 1 times [2024-11-09 06:31:04,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:04,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710524469] [2024-11-09 06:31:04,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:04,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:04,838 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 06:31:04,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:04,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710524469] [2024-11-09 06:31:04,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710524469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:31:04,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:31:04,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:31:04,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299310495] [2024-11-09 06:31:04,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:31:04,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:31:04,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:04,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:31:04,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:31:04,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 205 [2024-11-09 06:31:04,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 186 transitions, 392 flow. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:04,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:04,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 205 [2024-11-09 06:31:04,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:04,981 INFO L124 PetriNetUnfolderBase]: 45/532 cut-off events. [2024-11-09 06:31:04,981 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-09 06:31:04,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 532 events. 45/532 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2412 event pairs, 20 based on Foata normal form. 1/472 useless extension candidates. Maximal degree in co-relation 557. Up to 56 conditions per place. [2024-11-09 06:31:04,989 INFO L140 encePairwiseOnDemand]: 202/205 looper letters, 14 selfloop transitions, 2 changer transitions 0/187 dead transitions. [2024-11-09 06:31:04,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 187 transitions, 428 flow [2024-11-09 06:31:04,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:31:04,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 06:31:04,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 545 transitions. [2024-11-09 06:31:04,992 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8861788617886179 [2024-11-09 06:31:04,992 INFO L175 Difference]: Start difference. First operand has 187 places, 186 transitions, 392 flow. Second operand 3 states and 545 transitions. [2024-11-09 06:31:04,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 187 transitions, 428 flow [2024-11-09 06:31:04,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 187 transitions, 416 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 06:31:04,996 INFO L231 Difference]: Finished difference. Result has 185 places, 187 transitions, 394 flow [2024-11-09 06:31:04,997 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=394, PETRI_PLACES=185, PETRI_TRANSITIONS=187} [2024-11-09 06:31:04,998 INFO L277 CegarLoopForPetriNet]: 191 programPoint places, -6 predicate places. [2024-11-09 06:31:04,999 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 187 transitions, 394 flow [2024-11-09 06:31:05,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:05,000 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:05,003 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:31:05,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 06:31:05,004 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-09 06:31:05,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:05,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1945796179, now seen corresponding path program 1 times [2024-11-09 06:31:05,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:05,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76795289] [2024-11-09 06:31:05,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:05,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:05,081 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 06:31:05,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:05,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76795289] [2024-11-09 06:31:05,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76795289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:31:05,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826961323] [2024-11-09 06:31:05,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:05,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:05,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:31:05,085 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) [2024-11-09 06:31:05,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 06:31:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:05,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:31:05,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:31:05,219 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 06:31:05,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:31:05,280 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 06:31:05,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826961323] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:31:05,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:31:05,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-09 06:31:05,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992836672] [2024-11-09 06:31:05,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:31:05,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:31:05,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:05,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:31:05,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:31:05,355 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 205 [2024-11-09 06:31:05,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 187 transitions, 394 flow. Second operand has 10 states, 10 states have (on average 175.0) internal successors, (1750), 10 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:05,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:05,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 205 [2024-11-09 06:31:05,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:05,530 INFO L124 PetriNetUnfolderBase]: 45/547 cut-off events. [2024-11-09 06:31:05,531 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-09 06:31:05,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 643 conditions, 547 events. 45/547 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2389 event pairs, 20 based on Foata normal form. 2/488 useless extension candidates. Maximal degree in co-relation 592. Up to 56 conditions per place. [2024-11-09 06:31:05,539 INFO L140 encePairwiseOnDemand]: 199/205 looper letters, 18 selfloop transitions, 9 changer transitions 0/195 dead transitions. [2024-11-09 06:31:05,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 195 transitions, 466 flow [2024-11-09 06:31:05,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:31:05,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 06:31:05,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1586 transitions. [2024-11-09 06:31:05,544 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8596205962059621 [2024-11-09 06:31:05,545 INFO L175 Difference]: Start difference. First operand has 185 places, 187 transitions, 394 flow. Second operand 9 states and 1586 transitions. [2024-11-09 06:31:05,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 195 transitions, 466 flow [2024-11-09 06:31:05,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 195 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 06:31:05,550 INFO L231 Difference]: Finished difference. Result has 195 places, 193 transitions, 442 flow [2024-11-09 06:31:05,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=442, PETRI_PLACES=195, PETRI_TRANSITIONS=193} [2024-11-09 06:31:05,553 INFO L277 CegarLoopForPetriNet]: 191 programPoint places, 4 predicate places. [2024-11-09 06:31:05,553 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 193 transitions, 442 flow [2024-11-09 06:31:05,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 175.0) internal successors, (1750), 10 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:05,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:05,556 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:31:05,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 06:31:05,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:05,757 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-09 06:31:05,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:05,758 INFO L85 PathProgramCache]: Analyzing trace with hash -135711629, now seen corresponding path program 2 times [2024-11-09 06:31:05,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:05,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790044095] [2024-11-09 06:31:05,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:05,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:05,966 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 06:31:05,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:05,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790044095] [2024-11-09 06:31:05,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790044095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:31:05,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714401194] [2024-11-09 06:31:05,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:31:05,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:05,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:31:05,970 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) [2024-11-09 06:31:05,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 06:31:06,079 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:31:06,079 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:31:06,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:31:06,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:31:06,165 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 06:31:06,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:31:06,284 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 06:31:06,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714401194] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:31:06,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:31:06,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-09 06:31:06,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270226092] [2024-11-09 06:31:06,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:31:06,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 06:31:06,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:06,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 06:31:06,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:31:06,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 205 [2024-11-09 06:31:06,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 193 transitions, 442 flow. Second operand has 15 states, 15 states have (on average 175.13333333333333) internal successors, (2627), 15 states have internal predecessors, (2627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:06,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:06,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 205 [2024-11-09 06:31:06,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:06,635 INFO L124 PetriNetUnfolderBase]: 45/586 cut-off events. [2024-11-09 06:31:06,635 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-09 06:31:06,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 586 events. 45/586 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2391 event pairs, 20 based on Foata normal form. 3/528 useless extension candidates. Maximal degree in co-relation 554. Up to 56 conditions per place. [2024-11-09 06:31:06,643 INFO L140 encePairwiseOnDemand]: 199/205 looper letters, 21 selfloop transitions, 18 changer transitions 0/207 dead transitions. [2024-11-09 06:31:06,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 207 transitions, 594 flow [2024-11-09 06:31:06,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 06:31:06,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 06:31:06,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3156 transitions. [2024-11-09 06:31:06,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8552845528455284 [2024-11-09 06:31:06,652 INFO L175 Difference]: Start difference. First operand has 195 places, 193 transitions, 442 flow. Second operand 18 states and 3156 transitions. [2024-11-09 06:31:06,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 207 transitions, 594 flow [2024-11-09 06:31:06,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 207 transitions, 582 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-09 06:31:06,658 INFO L231 Difference]: Finished difference. Result has 215 places, 203 transitions, 542 flow [2024-11-09 06:31:06,660 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=542, PETRI_PLACES=215, PETRI_TRANSITIONS=203} [2024-11-09 06:31:06,662 INFO L277 CegarLoopForPetriNet]: 191 programPoint places, 24 predicate places. [2024-11-09 06:31:06,662 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 203 transitions, 542 flow [2024-11-09 06:31:06,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 175.13333333333333) internal successors, (2627), 15 states have internal predecessors, (2627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:06,665 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:06,665 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:31:06,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 06:31:06,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:06,870 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-09 06:31:06,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:06,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1302683912, now seen corresponding path program 3 times [2024-11-09 06:31:06,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:06,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635963291] [2024-11-09 06:31:06,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:06,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:31:06,912 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:31:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:31:06,950 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 06:31:06,950 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:31:06,951 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-11-09 06:31:06,951 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-11-09 06:31:06,951 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-11-09 06:31:06,951 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-11-09 06:31:06,951 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-11-09 06:31:06,951 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-11-09 06:31:06,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-11-09 06:31:06,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2024-11-09 06:31:06,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-11-09 06:31:06,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-11-09 06:31:06,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-11-09 06:31:06,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-11-09 06:31:06,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-11-09 06:31:06,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-11-09 06:31:06,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 06:31:06,953 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-09 06:31:06,954 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 06:31:06,954 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 06:31:07,006 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 06:31:07,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 280 transitions, 578 flow [2024-11-09 06:31:07,054 INFO L124 PetriNetUnfolderBase]: 30/311 cut-off events. [2024-11-09 06:31:07,055 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 06:31:07,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 311 events. 30/311 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 950 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 233. Up to 8 conditions per place. [2024-11-09 06:31:07,062 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 280 transitions, 578 flow [2024-11-09 06:31:07,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 280 transitions, 578 flow [2024-11-09 06:31:07,069 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:31:07,070 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;@7bacd7ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:31:07,070 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-09 06:31:07,074 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 06:31:07,075 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-09 06:31:07,075 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 06:31:07,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:07,075 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] [2024-11-09 06:31:07,076 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-09 06:31:07,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:07,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1892900165, now seen corresponding path program 1 times [2024-11-09 06:31:07,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:07,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18744723] [2024-11-09 06:31:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:07,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:07,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:31:07,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:07,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18744723] [2024-11-09 06:31:07,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18744723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:31:07,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:31:07,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:31:07,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060779839] [2024-11-09 06:31:07,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:31:07,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:31:07,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:07,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:31:07,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:31:07,673 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 280 [2024-11-09 06:31:07,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 280 transitions, 578 flow. Second operand has 6 states, 6 states have (on average 223.5) internal successors, (1341), 6 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:07,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:07,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 280 [2024-11-09 06:31:07,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:09,201 INFO L124 PetriNetUnfolderBase]: 2123/7992 cut-off events. [2024-11-09 06:31:09,202 INFO L125 PetriNetUnfolderBase]: For 622/622 co-relation queries the response was YES. [2024-11-09 06:31:09,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10986 conditions, 7992 events. 2123/7992 cut-off events. For 622/622 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 85750 event pairs, 1368 based on Foata normal form. 1735/8346 useless extension candidates. Maximal degree in co-relation 1867. Up to 2632 conditions per place. [2024-11-09 06:31:09,336 INFO L140 encePairwiseOnDemand]: 259/280 looper letters, 33 selfloop transitions, 5 changer transitions 0/255 dead transitions. [2024-11-09 06:31:09,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 255 transitions, 604 flow [2024-11-09 06:31:09,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:31:09,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 06:31:09,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1386 transitions. [2024-11-09 06:31:09,341 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.825 [2024-11-09 06:31:09,341 INFO L175 Difference]: Start difference. First operand has 260 places, 280 transitions, 578 flow. Second operand 6 states and 1386 transitions. [2024-11-09 06:31:09,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 255 transitions, 604 flow [2024-11-09 06:31:09,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 255 transitions, 602 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-09 06:31:09,349 INFO L231 Difference]: Finished difference. Result has 254 places, 255 transitions, 536 flow [2024-11-09 06:31:09,350 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=536, PETRI_PLACES=254, PETRI_TRANSITIONS=255} [2024-11-09 06:31:09,350 INFO L277 CegarLoopForPetriNet]: 260 programPoint places, -6 predicate places. [2024-11-09 06:31:09,351 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 255 transitions, 536 flow [2024-11-09 06:31:09,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 223.5) internal successors, (1341), 6 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:09,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:09,356 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 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] [2024-11-09 06:31:09,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 06:31:09,356 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-09 06:31:09,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:09,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1279203417, now seen corresponding path program 1 times [2024-11-09 06:31:09,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:09,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769639370] [2024-11-09 06:31:09,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:09,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:09,404 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:31:09,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:09,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769639370] [2024-11-09 06:31:09,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769639370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:31:09,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:31:09,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:31:09,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294097927] [2024-11-09 06:31:09,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:31:09,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:31:09,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:09,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:31:09,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:31:09,431 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 280 [2024-11-09 06:31:09,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 255 transitions, 536 flow. Second operand has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:09,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:09,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 280 [2024-11-09 06:31:09,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:09,930 INFO L124 PetriNetUnfolderBase]: 345/2627 cut-off events. [2024-11-09 06:31:09,930 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-11-09 06:31:09,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3116 conditions, 2627 events. 345/2627 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 22304 event pairs, 220 based on Foata normal form. 1/2311 useless extension candidates. Maximal degree in co-relation 3052. Up to 381 conditions per place. [2024-11-09 06:31:09,982 INFO L140 encePairwiseOnDemand]: 277/280 looper letters, 19 selfloop transitions, 2 changer transitions 0/256 dead transitions. [2024-11-09 06:31:09,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 256 transitions, 582 flow [2024-11-09 06:31:09,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:31:09,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 06:31:09,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 745 transitions. [2024-11-09 06:31:09,985 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8869047619047619 [2024-11-09 06:31:09,986 INFO L175 Difference]: Start difference. First operand has 254 places, 255 transitions, 536 flow. Second operand 3 states and 745 transitions. [2024-11-09 06:31:09,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 256 transitions, 582 flow [2024-11-09 06:31:09,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 256 transitions, 570 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 06:31:09,991 INFO L231 Difference]: Finished difference. Result has 252 places, 256 transitions, 538 flow [2024-11-09 06:31:09,992 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=538, PETRI_PLACES=252, PETRI_TRANSITIONS=256} [2024-11-09 06:31:09,992 INFO L277 CegarLoopForPetriNet]: 260 programPoint places, -8 predicate places. [2024-11-09 06:31:09,993 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 256 transitions, 538 flow [2024-11-09 06:31:09,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:09,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:09,994 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:31:09,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 06:31:09,994 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-09 06:31:09,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:09,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1618866036, now seen corresponding path program 1 times [2024-11-09 06:31:09,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:09,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898762407] [2024-11-09 06:31:09,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:09,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:10,100 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:31:10,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:10,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898762407] [2024-11-09 06:31:10,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898762407] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:31:10,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328493512] [2024-11-09 06:31:10,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:10,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:10,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:31:10,104 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) [2024-11-09 06:31:10,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 06:31:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:10,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:31:10,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:31:10,238 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:31:10,239 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:31:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:31:10,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328493512] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:31:10,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:31:10,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-09 06:31:10,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358240542] [2024-11-09 06:31:10,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:31:10,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:31:10,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:10,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:31:10,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:31:10,343 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 280 [2024-11-09 06:31:10,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 256 transitions, 538 flow. Second operand has 10 states, 10 states have (on average 240.1) internal successors, (2401), 10 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:10,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:10,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 280 [2024-11-09 06:31:10,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:10,903 INFO L124 PetriNetUnfolderBase]: 345/2642 cut-off events. [2024-11-09 06:31:10,904 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-11-09 06:31:10,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3139 conditions, 2642 events. 345/2642 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 22236 event pairs, 220 based on Foata normal form. 2/2327 useless extension candidates. Maximal degree in co-relation 3087. Up to 381 conditions per place. [2024-11-09 06:31:10,941 INFO L140 encePairwiseOnDemand]: 274/280 looper letters, 23 selfloop transitions, 9 changer transitions 0/264 dead transitions. [2024-11-09 06:31:10,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 264 transitions, 620 flow [2024-11-09 06:31:10,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:31:10,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 06:31:10,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2176 transitions. [2024-11-09 06:31:10,948 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8634920634920635 [2024-11-09 06:31:10,948 INFO L175 Difference]: Start difference. First operand has 252 places, 256 transitions, 538 flow. Second operand 9 states and 2176 transitions. [2024-11-09 06:31:10,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 264 transitions, 620 flow [2024-11-09 06:31:10,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 264 transitions, 618 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 06:31:10,955 INFO L231 Difference]: Finished difference. Result has 262 places, 262 transitions, 586 flow [2024-11-09 06:31:10,956 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=586, PETRI_PLACES=262, PETRI_TRANSITIONS=262} [2024-11-09 06:31:10,957 INFO L277 CegarLoopForPetriNet]: 260 programPoint places, 2 predicate places. [2024-11-09 06:31:10,957 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 262 transitions, 586 flow [2024-11-09 06:31:10,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 240.1) internal successors, (2401), 10 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:10,959 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:10,959 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 06:31:10,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 06:31:11,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 06:31:11,160 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-09 06:31:11,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:11,161 INFO L85 PathProgramCache]: Analyzing trace with hash 635137620, now seen corresponding path program 2 times [2024-11-09 06:31:11,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:11,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663096771] [2024-11-09 06:31:11,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:11,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:11,358 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:31:11,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:11,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663096771] [2024-11-09 06:31:11,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663096771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:31:11,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951723333] [2024-11-09 06:31:11,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:31:11,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:11,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:31:11,362 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:31:11,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 06:31:11,485 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:31:11,486 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:31:11,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:31:11,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:31:11,567 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:31:11,567 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:31:11,700 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:31:11,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951723333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:31:11,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:31:11,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-09 06:31:11,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749760623] [2024-11-09 06:31:11,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:31:11,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 06:31:11,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:11,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 06:31:11,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:31:11,806 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 280 [2024-11-09 06:31:11,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 262 transitions, 586 flow. Second operand has 15 states, 15 states have (on average 240.2) internal successors, (3603), 15 states have internal predecessors, (3603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:11,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:11,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 280 [2024-11-09 06:31:11,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:12,564 INFO L124 PetriNetUnfolderBase]: 345/2681 cut-off events. [2024-11-09 06:31:12,565 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-11-09 06:31:12,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3232 conditions, 2681 events. 345/2681 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 22262 event pairs, 220 based on Foata normal form. 3/2367 useless extension candidates. Maximal degree in co-relation 3049. Up to 381 conditions per place. [2024-11-09 06:31:12,605 INFO L140 encePairwiseOnDemand]: 274/280 looper letters, 26 selfloop transitions, 18 changer transitions 0/276 dead transitions. [2024-11-09 06:31:12,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 276 transitions, 748 flow [2024-11-09 06:31:12,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 06:31:12,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 06:31:12,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4331 transitions. [2024-11-09 06:31:12,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8593253968253968 [2024-11-09 06:31:12,618 INFO L175 Difference]: Start difference. First operand has 262 places, 262 transitions, 586 flow. Second operand 18 states and 4331 transitions. [2024-11-09 06:31:12,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 276 transitions, 748 flow [2024-11-09 06:31:12,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 276 transitions, 736 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-09 06:31:12,624 INFO L231 Difference]: Finished difference. Result has 282 places, 272 transitions, 686 flow [2024-11-09 06:31:12,625 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=686, PETRI_PLACES=282, PETRI_TRANSITIONS=272} [2024-11-09 06:31:12,626 INFO L277 CegarLoopForPetriNet]: 260 programPoint places, 22 predicate places. [2024-11-09 06:31:12,626 INFO L471 AbstractCegarLoop]: Abstraction has has 282 places, 272 transitions, 686 flow [2024-11-09 06:31:12,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 240.2) internal successors, (3603), 15 states have internal predecessors, (3603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:12,628 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:12,628 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 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] [2024-11-09 06:31:12,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 06:31:12,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:12,834 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-09 06:31:12,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:12,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1976692487, now seen corresponding path program 3 times [2024-11-09 06:31:12,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:12,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946443764] [2024-11-09 06:31:12,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:12,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:31:12,885 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:31:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:31:12,920 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 06:31:12,921 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:31:12,921 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-09 06:31:12,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-11-09 06:31:12,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-11-09 06:31:12,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-11-09 06:31:12,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-11-09 06:31:12,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-11-09 06:31:12,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-11-09 06:31:12,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-11-09 06:31:12,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-11-09 06:31:12,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-11-09 06:31:12,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-11-09 06:31:12,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-11-09 06:31:12,926 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-11-09 06:31:12,926 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-11-09 06:31:12,926 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-11-09 06:31:12,926 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-11-09 06:31:12,926 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-11-09 06:31:12,926 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-11-09 06:31:12,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 06:31:12,926 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-09 06:31:12,927 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 06:31:12,927 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-09 06:31:12,978 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 06:31:12,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 355 transitions, 738 flow [2024-11-09 06:31:13,048 INFO L124 PetriNetUnfolderBase]: 39/397 cut-off events. [2024-11-09 06:31:13,048 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-09 06:31:13,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 416 conditions, 397 events. 39/397 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1395 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 319. Up to 10 conditions per place. [2024-11-09 06:31:13,061 INFO L82 GeneralOperation]: Start removeDead. Operand has 329 places, 355 transitions, 738 flow [2024-11-09 06:31:13,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 355 transitions, 738 flow [2024-11-09 06:31:13,067 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:31:13,068 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;@7bacd7ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:31:13,068 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-09 06:31:13,072 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 06:31:13,072 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-09 06:31:13,072 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 06:31:13,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:13,073 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] [2024-11-09 06:31:13,073 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-09 06:31:13,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:13,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1005011522, now seen corresponding path program 1 times [2024-11-09 06:31:13,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:13,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214698510] [2024-11-09 06:31:13,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:13,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:31:13,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:13,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214698510] [2024-11-09 06:31:13,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214698510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:31:13,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:31:13,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:31:13,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615397532] [2024-11-09 06:31:13,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:31:13,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:31:13,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:13,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:31:13,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:31:13,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 355 [2024-11-09 06:31:13,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 355 transitions, 738 flow. Second operand has 6 states, 6 states have (on average 284.5) internal successors, (1707), 6 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:13,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:13,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 355 [2024-11-09 06:31:13,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:27,693 INFO L124 PetriNetUnfolderBase]: 27422/78048 cut-off events. [2024-11-09 06:31:27,693 INFO L125 PetriNetUnfolderBase]: For 9100/9100 co-relation queries the response was YES. [2024-11-09 06:31:28,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114145 conditions, 78048 events. 27422/78048 cut-off events. For 9100/9100 co-relation queries the response was YES. Maximal size of possible extension queue 2925. Compared 1076195 event pairs, 18864 based on Foata normal form. 17951/81751 useless extension candidates. Maximal degree in co-relation 11022. Up to 32089 conditions per place. [2024-11-09 06:31:29,810 INFO L140 encePairwiseOnDemand]: 330/355 looper letters, 42 selfloop transitions, 5 changer transitions 0/324 dead transitions. [2024-11-09 06:31:29,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 324 transitions, 770 flow [2024-11-09 06:31:29,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:31:29,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 06:31:29,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1765 transitions. [2024-11-09 06:31:29,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8286384976525821 [2024-11-09 06:31:29,815 INFO L175 Difference]: Start difference. First operand has 329 places, 355 transitions, 738 flow. Second operand 6 states and 1765 transitions. [2024-11-09 06:31:29,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 324 transitions, 770 flow [2024-11-09 06:31:29,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 324 transitions, 764 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-09 06:31:29,825 INFO L231 Difference]: Finished difference. Result has 321 places, 324 transitions, 680 flow [2024-11-09 06:31:29,826 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=680, PETRI_PLACES=321, PETRI_TRANSITIONS=324} [2024-11-09 06:31:29,827 INFO L277 CegarLoopForPetriNet]: 329 programPoint places, -8 predicate places. [2024-11-09 06:31:29,827 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 324 transitions, 680 flow [2024-11-09 06:31:29,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 284.5) internal successors, (1707), 6 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:29,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:29,829 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] [2024-11-09 06:31:29,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 06:31:29,829 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-09 06:31:29,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:29,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2046493159, now seen corresponding path program 1 times [2024-11-09 06:31:29,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:29,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792879731] [2024-11-09 06:31:29,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:29,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:31:29,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:29,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792879731] [2024-11-09 06:31:29,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792879731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:31:29,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:31:29,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:31:29,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7868936] [2024-11-09 06:31:29,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:31:29,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:31:29,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:29,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:31:29,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:31:29,903 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 355 [2024-11-09 06:31:29,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 324 transitions, 680 flow. Second operand has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:29,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:29,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 355 [2024-11-09 06:31:29,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:32,328 INFO L124 PetriNetUnfolderBase]: 2345/13602 cut-off events. [2024-11-09 06:31:32,328 INFO L125 PetriNetUnfolderBase]: For 1218/1218 co-relation queries the response was YES. [2024-11-09 06:31:32,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16592 conditions, 13602 events. 2345/13602 cut-off events. For 1218/1218 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 163680 event pairs, 1720 based on Foata normal form. 1/12006 useless extension candidates. Maximal degree in co-relation 16527. Up to 2506 conditions per place. [2024-11-09 06:31:32,536 INFO L140 encePairwiseOnDemand]: 352/355 looper letters, 24 selfloop transitions, 2 changer transitions 0/325 dead transitions. [2024-11-09 06:31:32,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 325 transitions, 736 flow [2024-11-09 06:31:32,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:31:32,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 06:31:32,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 945 transitions. [2024-11-09 06:31:32,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8873239436619719 [2024-11-09 06:31:32,539 INFO L175 Difference]: Start difference. First operand has 321 places, 324 transitions, 680 flow. Second operand 3 states and 945 transitions. [2024-11-09 06:31:32,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 325 transitions, 736 flow [2024-11-09 06:31:32,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 325 transitions, 724 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 06:31:32,552 INFO L231 Difference]: Finished difference. Result has 319 places, 325 transitions, 682 flow [2024-11-09 06:31:32,553 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=682, PETRI_PLACES=319, PETRI_TRANSITIONS=325} [2024-11-09 06:31:32,554 INFO L277 CegarLoopForPetriNet]: 329 programPoint places, -10 predicate places. [2024-11-09 06:31:32,554 INFO L471 AbstractCegarLoop]: Abstraction has has 319 places, 325 transitions, 682 flow [2024-11-09 06:31:32,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:32,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:32,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:31:32,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 06:31:32,556 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-09 06:31:32,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:32,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2035898167, now seen corresponding path program 1 times [2024-11-09 06:31:32,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:32,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462731723] [2024-11-09 06:31:32,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:32,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:32,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:31:32,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:32,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462731723] [2024-11-09 06:31:32,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462731723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:31:32,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864414282] [2024-11-09 06:31:32,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:32,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:32,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:31:32,637 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:31:32,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 06:31:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:32,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 06:31:32,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:31:32,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:31:32,773 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:31:32,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864414282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:31:32,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:31:32,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-09 06:31:32,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517951826] [2024-11-09 06:31:32,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:31:32,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:31:32,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:32,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:31:32,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:31:32,800 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 355 [2024-11-09 06:31:32,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 325 transitions, 682 flow. Second operand has 3 states, 3 states have (on average 307.3333333333333) internal successors, (922), 3 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:32,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:32,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 355 [2024-11-09 06:31:32,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:37,098 INFO L124 PetriNetUnfolderBase]: 5494/24291 cut-off events. [2024-11-09 06:31:37,098 INFO L125 PetriNetUnfolderBase]: For 1898/1898 co-relation queries the response was YES. [2024-11-09 06:31:37,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31795 conditions, 24291 events. 5494/24291 cut-off events. For 1898/1898 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 311394 event pairs, 3970 based on Foata normal form. 156/21294 useless extension candidates. Maximal degree in co-relation 31747. Up to 5843 conditions per place. [2024-11-09 06:31:37,453 INFO L140 encePairwiseOnDemand]: 352/355 looper letters, 41 selfloop transitions, 2 changer transitions 0/341 dead transitions. [2024-11-09 06:31:37,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 341 transitions, 815 flow [2024-11-09 06:31:37,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:31:37,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 06:31:37,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 959 transitions. [2024-11-09 06:31:37,455 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9004694835680751 [2024-11-09 06:31:37,455 INFO L175 Difference]: Start difference. First operand has 319 places, 325 transitions, 682 flow. Second operand 3 states and 959 transitions. [2024-11-09 06:31:37,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 341 transitions, 815 flow [2024-11-09 06:31:37,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 341 transitions, 813 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 06:31:37,472 INFO L231 Difference]: Finished difference. Result has 321 places, 326 transitions, 692 flow [2024-11-09 06:31:37,473 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=692, PETRI_PLACES=321, PETRI_TRANSITIONS=326} [2024-11-09 06:31:37,473 INFO L277 CegarLoopForPetriNet]: 329 programPoint places, -8 predicate places. [2024-11-09 06:31:37,474 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 326 transitions, 692 flow [2024-11-09 06:31:37,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 307.3333333333333) internal successors, (922), 3 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:37,474 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:37,475 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:31:37,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 06:31:37,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:37,679 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-09 06:31:37,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:37,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1089904491, now seen corresponding path program 1 times [2024-11-09 06:31:37,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:37,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556586340] [2024-11-09 06:31:37,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:37,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:31:37,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:37,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556586340] [2024-11-09 06:31:37,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556586340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:31:37,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057121127] [2024-11-09 06:31:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:37,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:37,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:31:37,764 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:31:37,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 06:31:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:37,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:31:37,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:31:37,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:31:37,926 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:31:37,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:31:37,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057121127] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:31:37,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:31:37,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-09 06:31:37,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665680824] [2024-11-09 06:31:37,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:31:37,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:31:37,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:37,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:31:37,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:31:38,067 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 355 [2024-11-09 06:31:38,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 326 transitions, 692 flow. Second operand has 10 states, 10 states have (on average 304.9) internal successors, (3049), 10 states have internal predecessors, (3049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:38,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:38,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 355 [2024-11-09 06:31:38,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:40,985 INFO L124 PetriNetUnfolderBase]: 2346/13636 cut-off events. [2024-11-09 06:31:40,985 INFO L125 PetriNetUnfolderBase]: For 1217/1217 co-relation queries the response was YES. [2024-11-09 06:31:41,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16639 conditions, 13636 events. 2346/13636 cut-off events. For 1217/1217 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 164322 event pairs, 1720 based on Foata normal form. 2/12036 useless extension candidates. Maximal degree in co-relation 16543. Up to 2506 conditions per place. [2024-11-09 06:31:41,160 INFO L140 encePairwiseOnDemand]: 349/355 looper letters, 28 selfloop transitions, 9 changer transitions 0/334 dead transitions. [2024-11-09 06:31:41,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 334 transitions, 784 flow [2024-11-09 06:31:41,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:31:41,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 06:31:41,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2766 transitions. [2024-11-09 06:31:41,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8657276995305164 [2024-11-09 06:31:41,165 INFO L175 Difference]: Start difference. First operand has 321 places, 326 transitions, 692 flow. Second operand 9 states and 2766 transitions. [2024-11-09 06:31:41,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 334 transitions, 784 flow [2024-11-09 06:31:41,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 334 transitions, 782 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 06:31:41,175 INFO L231 Difference]: Finished difference. Result has 331 places, 332 transitions, 740 flow [2024-11-09 06:31:41,176 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=740, PETRI_PLACES=331, PETRI_TRANSITIONS=332} [2024-11-09 06:31:41,176 INFO L277 CegarLoopForPetriNet]: 329 programPoint places, 2 predicate places. [2024-11-09 06:31:41,176 INFO L471 AbstractCegarLoop]: Abstraction has has 331 places, 332 transitions, 740 flow [2024-11-09 06:31:41,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.9) internal successors, (3049), 10 states have internal predecessors, (3049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:41,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:41,178 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:31:41,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 06:31:41,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:41,383 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-09 06:31:41,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:41,384 INFO L85 PathProgramCache]: Analyzing trace with hash -442498709, now seen corresponding path program 2 times [2024-11-09 06:31:41,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:41,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163573069] [2024-11-09 06:31:41,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:41,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:41,554 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:31:41,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:41,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163573069] [2024-11-09 06:31:41,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163573069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:31:41,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177064864] [2024-11-09 06:31:41,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:31:41,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:41,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:31:41,557 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:31:41,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 06:31:41,678 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 06:31:41,679 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:31:41,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 06:31:41,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:31:41,719 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 15 treesize of output 11 [2024-11-09 06:31:41,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-09 06:31:41,767 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:31:41,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-11-09 06:31:41,812 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:31:41,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-11-09 06:31:41,847 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 06:31:41,847 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:31:41,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177064864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:31:41,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:31:41,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-11-09 06:31:41,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413345589] [2024-11-09 06:31:41,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:31:41,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:31:41,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:41,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:31:41,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-09 06:31:42,139 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 355 [2024-11-09 06:31:42,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 332 transitions, 740 flow. Second operand has 6 states, 6 states have (on average 298.3333333333333) internal successors, (1790), 6 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:42,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:42,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 355 [2024-11-09 06:31:42,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:48,839 INFO L124 PetriNetUnfolderBase]: 9055/35816 cut-off events. [2024-11-09 06:31:48,839 INFO L125 PetriNetUnfolderBase]: For 3834/3834 co-relation queries the response was YES. [2024-11-09 06:31:49,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48817 conditions, 35816 events. 9055/35816 cut-off events. For 3834/3834 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 473417 event pairs, 3595 based on Foata normal form. 0/31888 useless extension candidates. Maximal degree in co-relation 48706. Up to 5325 conditions per place. [2024-11-09 06:31:49,444 INFO L140 encePairwiseOnDemand]: 349/355 looper letters, 90 selfloop transitions, 6 changer transitions 0/391 dead transitions. [2024-11-09 06:31:49,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 391 transitions, 1110 flow [2024-11-09 06:31:49,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:31:49,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 06:31:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1872 transitions. [2024-11-09 06:31:49,447 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8788732394366198 [2024-11-09 06:31:49,447 INFO L175 Difference]: Start difference. First operand has 331 places, 332 transitions, 740 flow. Second operand 6 states and 1872 transitions. [2024-11-09 06:31:49,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 391 transitions, 1110 flow [2024-11-09 06:31:49,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 391 transitions, 1104 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 06:31:49,464 INFO L231 Difference]: Finished difference. Result has 334 places, 331 transitions, 744 flow [2024-11-09 06:31:49,465 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=744, PETRI_PLACES=334, PETRI_TRANSITIONS=331} [2024-11-09 06:31:49,465 INFO L277 CegarLoopForPetriNet]: 329 programPoint places, 5 predicate places. [2024-11-09 06:31:49,465 INFO L471 AbstractCegarLoop]: Abstraction has has 334 places, 331 transitions, 744 flow [2024-11-09 06:31:49,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 298.3333333333333) internal successors, (1790), 6 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:49,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:49,467 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 06:31:49,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 06:31:49,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:49,671 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-09 06:31:49,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:49,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1955802234, now seen corresponding path program 1 times [2024-11-09 06:31:49,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:49,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318201381] [2024-11-09 06:31:49,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:49,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:49,854 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-09 06:31:49,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:49,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318201381] [2024-11-09 06:31:49,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318201381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:31:49,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404205892] [2024-11-09 06:31:49,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:49,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:49,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:31:49,857 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:31:49,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 06:31:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:50,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:31:50,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:31:50,413 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-09 06:31:50,414 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:31:50,512 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-09 06:31:50,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404205892] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:31:50,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:31:50,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-09 06:31:50,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789750599] [2024-11-09 06:31:50,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:31:50,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 06:31:50,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:50,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 06:31:50,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:31:50,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 355 [2024-11-09 06:31:50,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 331 transitions, 744 flow. Second operand has 15 states, 15 states have (on average 305.26666666666665) internal successors, (4579), 15 states have internal predecessors, (4579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:50,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:50,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 355 [2024-11-09 06:31:50,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:53,244 INFO L124 PetriNetUnfolderBase]: 2345/13675 cut-off events. [2024-11-09 06:31:53,245 INFO L125 PetriNetUnfolderBase]: For 1237/1237 co-relation queries the response was YES. [2024-11-09 06:31:53,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16737 conditions, 13675 events. 2345/13675 cut-off events. For 1237/1237 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 164490 event pairs, 1720 based on Foata normal form. 3/12078 useless extension candidates. Maximal degree in co-relation 16557. Up to 2506 conditions per place. [2024-11-09 06:31:53,498 INFO L140 encePairwiseOnDemand]: 349/355 looper letters, 31 selfloop transitions, 18 changer transitions 0/345 dead transitions. [2024-11-09 06:31:53,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 345 transitions, 910 flow [2024-11-09 06:31:53,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 06:31:53,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 06:31:53,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5506 transitions. [2024-11-09 06:31:53,506 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8616588419405321 [2024-11-09 06:31:53,506 INFO L175 Difference]: Start difference. First operand has 334 places, 331 transitions, 744 flow. Second operand 18 states and 5506 transitions. [2024-11-09 06:31:53,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 345 transitions, 910 flow [2024-11-09 06:31:53,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 345 transitions, 898 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 06:31:53,519 INFO L231 Difference]: Finished difference. Result has 350 places, 341 transitions, 838 flow [2024-11-09 06:31:53,520 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=838, PETRI_PLACES=350, PETRI_TRANSITIONS=341} [2024-11-09 06:31:53,520 INFO L277 CegarLoopForPetriNet]: 329 programPoint places, 21 predicate places. [2024-11-09 06:31:53,521 INFO L471 AbstractCegarLoop]: Abstraction has has 350 places, 341 transitions, 838 flow [2024-11-09 06:31:53,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 305.26666666666665) internal successors, (4579), 15 states have internal predecessors, (4579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:53,523 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:53,523 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 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] [2024-11-09 06:31:53,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 06:31:53,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-09 06:31:53,724 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-09 06:31:53,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:53,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1140058058, now seen corresponding path program 2 times [2024-11-09 06:31:53,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:53,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026797068] [2024-11-09 06:31:53,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:53,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:31:53,768 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:31:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:31:53,822 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 06:31:53,822 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:31:53,822 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-11-09 06:31:53,823 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-11-09 06:31:53,823 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-11-09 06:31:53,823 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-11-09 06:31:53,823 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-11-09 06:31:53,823 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-11-09 06:31:53,824 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-11-09 06:31:53,824 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-11-09 06:31:53,824 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-11-09 06:31:53,824 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-11-09 06:31:53,824 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-11-09 06:31:53,824 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-11-09 06:31:53,824 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-11-09 06:31:53,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-11-09 06:31:53,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-11-09 06:31:53,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-11-09 06:31:53,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-11-09 06:31:53,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-11-09 06:31:53,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-11-09 06:31:53,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-11-09 06:31:53,826 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-11-09 06:31:53,826 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-11-09 06:31:53,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-09 06:31:53,826 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-11-09 06:31:53,827 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 06:31:53,827 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-09 06:31:54,051 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 06:31:54,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 398 places, 430 transitions, 900 flow [2024-11-09 06:31:54,167 INFO L124 PetriNetUnfolderBase]: 48/483 cut-off events. [2024-11-09 06:31:54,167 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-09 06:31:54,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 483 events. 48/483 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1872 event pairs, 0 based on Foata normal form. 0/408 useless extension candidates. Maximal degree in co-relation 410. Up to 12 conditions per place. [2024-11-09 06:31:54,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 398 places, 430 transitions, 900 flow [2024-11-09 06:31:54,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 398 places, 430 transitions, 900 flow [2024-11-09 06:31:54,193 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:31:54,194 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;@7bacd7ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:31:54,194 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-09 06:31:54,199 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 06:31:54,199 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-09 06:31:54,199 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 06:31:54,199 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:54,200 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] [2024-11-09 06:31:54,200 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-11-09 06:31:54,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:54,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1683823188, now seen corresponding path program 1 times [2024-11-09 06:31:54,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:54,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032133829] [2024-11-09 06:31:54,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:54,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:54,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:31:54,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:54,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032133829] [2024-11-09 06:31:54,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032133829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:31:54,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:31:54,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:31:54,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512539283] [2024-11-09 06:31:54,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:31:54,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:31:54,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:54,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:31:54,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:31:54,642 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 430 [2024-11-09 06:31:54,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 430 transitions, 900 flow. Second operand has 6 states, 6 states have (on average 345.5) internal successors, (2073), 6 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:31:54,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:54,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 430 [2024-11-09 06:31:54,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand