./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-pthread-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-pthread-race.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 3a359957a0a91bc2fec438d7696016515f649682592913d41f3297b072a136f0 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 16:45:10,539 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 16:45:10,603 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-14 16:45:10,608 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 16:45:10,608 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 16:45:10,638 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 16:45:10,639 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 16:45:10,639 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 16:45:10,640 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 16:45:10,640 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 16:45:10,641 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 16:45:10,641 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 16:45:10,641 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 16:45:10,642 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 16:45:10,644 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 16:45:10,644 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 16:45:10,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 16:45:10,647 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 16:45:10,647 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 16:45:10,648 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 16:45:10,648 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 16:45:10,649 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 16:45:10,649 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-14 16:45:10,650 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 16:45:10,650 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 16:45:10,650 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 16:45:10,650 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 16:45:10,651 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 16:45:10,651 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 16:45:10,651 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 16:45:10,651 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 16:45:10,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:45:10,652 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 16:45:10,654 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 16:45:10,654 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 16:45:10,654 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 16:45:10,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 16:45:10,655 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 16:45:10,655 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 16:45:10,655 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 16:45:10,655 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 16:45:10,656 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a359957a0a91bc2fec438d7696016515f649682592913d41f3297b072a136f0 [2024-10-14 16:45:10,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 16:45:10,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 16:45:10,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 16:45:10,980 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 16:45:10,980 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 16:45:10,982 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-pthread-race.i [2024-10-14 16:45:12,439 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 16:45:12,729 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 16:45:12,729 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-pthread-race.i [2024-10-14 16:45:12,749 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fffbc763/c90ef26a22ea42e1b59387045f63a4c4/FLAG44eaacd85 [2024-10-14 16:45:13,019 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fffbc763/c90ef26a22ea42e1b59387045f63a4c4 [2024-10-14 16:45:13,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 16:45:13,023 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 16:45:13,025 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 16:45:13,025 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 16:45:13,029 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 16:45:13,030 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:45:13" (1/1) ... [2024-10-14 16:45:13,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f927015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:13, skipping insertion in model container [2024-10-14 16:45:13,031 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:45:13" (1/1) ... [2024-10-14 16:45:13,081 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 16:45:13,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:45:13,425 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 16:45:13,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:45:13,518 INFO L204 MainTranslator]: Completed translation [2024-10-14 16:45:13,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:13 WrapperNode [2024-10-14 16:45:13,519 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 16:45:13,520 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 16:45:13,520 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 16:45:13,520 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 16:45:13,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:13" (1/1) ... [2024-10-14 16:45:13,543 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:13" (1/1) ... [2024-10-14 16:45:13,570 INFO L138 Inliner]: procedures = 164, calls = 27, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 106 [2024-10-14 16:45:13,570 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 16:45:13,571 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 16:45:13,571 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 16:45:13,571 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 16:45:13,580 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:13" (1/1) ... [2024-10-14 16:45:13,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:13" (1/1) ... [2024-10-14 16:45:13,584 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:13" (1/1) ... [2024-10-14 16:45:13,584 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:13" (1/1) ... [2024-10-14 16:45:13,603 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:13" (1/1) ... [2024-10-14 16:45:13,609 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:13" (1/1) ... [2024-10-14 16:45:13,614 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:13" (1/1) ... [2024-10-14 16:45:13,615 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:13" (1/1) ... [2024-10-14 16:45:13,620 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 16:45:13,621 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 16:45:13,621 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 16:45:13,621 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 16:45:13,622 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:13" (1/1) ... [2024-10-14 16:45:13,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:45:13,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:45:13,659 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 16:45:13,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 16:45:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-14 16:45:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-14 16:45:13,710 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-14 16:45:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-14 16:45:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 16:45:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 16:45:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-14 16:45:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 16:45:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 16:45:13,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 16:45:13,712 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 16:45:13,835 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 16:45:13,837 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 16:45:14,075 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 16:45:14,075 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 16:45:14,100 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 16:45:14,101 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-14 16:45:14,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:45:14 BoogieIcfgContainer [2024-10-14 16:45:14,101 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 16:45:14,103 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 16:45:14,103 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 16:45:14,107 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 16:45:14,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:45:13" (1/3) ... [2024-10-14 16:45:14,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce0019e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:45:14, skipping insertion in model container [2024-10-14 16:45:14,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:13" (2/3) ... [2024-10-14 16:45:14,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce0019e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:45:14, skipping insertion in model container [2024-10-14 16:45:14,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:45:14" (3/3) ... [2024-10-14 16:45:14,110 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym-pthread-race.i [2024-10-14 16:45:14,127 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 16:45:14,127 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-10-14 16:45:14,128 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 16:45:14,210 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:45:14,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 120 transitions, 244 flow [2024-10-14 16:45:14,320 INFO L124 PetriNetUnfolderBase]: 10/129 cut-off events. [2024-10-14 16:45:14,321 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:45:14,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 129 events. 10/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 75. Up to 4 conditions per place. [2024-10-14 16:45:14,331 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 120 transitions, 244 flow [2024-10-14 16:45:14,335 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 120 transitions, 244 flow [2024-10-14 16:45:14,343 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:45:14,349 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;@15248ba3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:45:14,349 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-14 16:45:14,367 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:45:14,367 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-14 16:45:14,367 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:45:14,368 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:14,369 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] [2024-10-14 16:45:14,369 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-14 16:45:14,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:14,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1641584455, now seen corresponding path program 1 times [2024-10-14 16:45:14,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:14,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46106064] [2024-10-14 16:45:14,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:14,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:15,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:45:15,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:15,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46106064] [2024-10-14 16:45:15,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46106064] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:45:15,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:45:15,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 16:45:15,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249960105] [2024-10-14 16:45:15,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:45:15,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 16:45:15,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:15,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 16:45:15,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:45:15,503 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 120 [2024-10-14 16:45:15,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 120 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:15,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:15,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 120 [2024-10-14 16:45:15,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:15,590 INFO L124 PetriNetUnfolderBase]: 3/111 cut-off events. [2024-10-14 16:45:15,591 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 16:45:15,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 111 events. 3/111 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 13/115 useless extension candidates. Maximal degree in co-relation 70. Up to 14 conditions per place. [2024-10-14 16:45:15,594 INFO L140 encePairwiseOnDemand]: 107/120 looper letters, 13 selfloop transitions, 5 changer transitions 0/107 dead transitions. [2024-10-14 16:45:15,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 107 transitions, 254 flow [2024-10-14 16:45:15,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 16:45:15,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 16:45:15,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 578 transitions. [2024-10-14 16:45:15,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8027777777777778 [2024-10-14 16:45:15,619 INFO L175 Difference]: Start difference. First operand has 114 places, 120 transitions, 244 flow. Second operand 6 states and 578 transitions. [2024-10-14 16:45:15,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 107 transitions, 254 flow [2024-10-14 16:45:15,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 107 transitions, 254 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 16:45:15,629 INFO L231 Difference]: Finished difference. Result has 112 places, 107 transitions, 228 flow [2024-10-14 16:45:15,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=228, PETRI_PLACES=112, PETRI_TRANSITIONS=107} [2024-10-14 16:45:15,638 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -2 predicate places. [2024-10-14 16:45:15,639 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 107 transitions, 228 flow [2024-10-14 16:45:15,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:15,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:15,640 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] [2024-10-14 16:45:15,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 16:45:15,641 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-14 16:45:15,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:15,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1210924523, now seen corresponding path program 1 times [2024-10-14 16:45:15,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:15,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310608974] [2024-10-14 16:45:15,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:15,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:15,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 16:45:15,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:15,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310608974] [2024-10-14 16:45:15,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310608974] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:45:15,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:45:15,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 16:45:15,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873678990] [2024-10-14 16:45:15,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:45:15,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:45:15,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:15,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:45:15,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:45:15,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 120 [2024-10-14 16:45:15,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 107 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:15,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:15,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 120 [2024-10-14 16:45:15,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:15,796 INFO L124 PetriNetUnfolderBase]: 3/123 cut-off events. [2024-10-14 16:45:15,797 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 16:45:15,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 123 events. 3/123 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 1/116 useless extension candidates. Maximal degree in co-relation 86. Up to 9 conditions per place. [2024-10-14 16:45:15,800 INFO L140 encePairwiseOnDemand]: 117/120 looper letters, 7 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2024-10-14 16:45:15,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 108 transitions, 250 flow [2024-10-14 16:45:15,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:45:15,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 16:45:15,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2024-10-14 16:45:15,804 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8861111111111111 [2024-10-14 16:45:15,805 INFO L175 Difference]: Start difference. First operand has 112 places, 107 transitions, 228 flow. Second operand 3 states and 319 transitions. [2024-10-14 16:45:15,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 108 transitions, 250 flow [2024-10-14 16:45:15,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 108 transitions, 238 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 16:45:15,809 INFO L231 Difference]: Finished difference. Result has 110 places, 108 transitions, 230 flow [2024-10-14 16:45:15,810 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=110, PETRI_TRANSITIONS=108} [2024-10-14 16:45:15,810 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -4 predicate places. [2024-10-14 16:45:15,811 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 108 transitions, 230 flow [2024-10-14 16:45:15,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:15,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:15,811 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] [2024-10-14 16:45:15,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 16:45:15,812 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-14 16:45:15,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:15,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1447464402, now seen corresponding path program 1 times [2024-10-14 16:45:15,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:15,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157653561] [2024-10-14 16:45:15,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:15,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:15,935 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 16:45:15,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:15,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157653561] [2024-10-14 16:45:15,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157653561] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:45:15,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495878876] [2024-10-14 16:45:15,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:15,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:15,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:45:15,941 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:45:15,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 16:45:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:16,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 16:45:16,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:45:16,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 16:45:16,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:45:16,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 16:45:16,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495878876] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:45:16,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:45:16,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-14 16:45:16,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509424053] [2024-10-14 16:45:16,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:45:16,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 16:45:16,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:16,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 16:45:16,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 16:45:16,294 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 120 [2024-10-14 16:45:16,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 108 transitions, 230 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:16,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:16,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 120 [2024-10-14 16:45:16,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:16,395 INFO L124 PetriNetUnfolderBase]: 3/138 cut-off events. [2024-10-14 16:45:16,397 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 16:45:16,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 138 events. 3/138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 2/132 useless extension candidates. Maximal degree in co-relation 121. Up to 9 conditions per place. [2024-10-14 16:45:16,399 INFO L140 encePairwiseOnDemand]: 114/120 looper letters, 11 selfloop transitions, 9 changer transitions 0/116 dead transitions. [2024-10-14 16:45:16,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 116 transitions, 288 flow [2024-10-14 16:45:16,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 16:45:16,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 16:45:16,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 922 transitions. [2024-10-14 16:45:16,404 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8537037037037037 [2024-10-14 16:45:16,404 INFO L175 Difference]: Start difference. First operand has 110 places, 108 transitions, 230 flow. Second operand 9 states and 922 transitions. [2024-10-14 16:45:16,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 116 transitions, 288 flow [2024-10-14 16:45:16,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 116 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 16:45:16,408 INFO L231 Difference]: Finished difference. Result has 120 places, 114 transitions, 278 flow [2024-10-14 16:45:16,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=278, PETRI_PLACES=120, PETRI_TRANSITIONS=114} [2024-10-14 16:45:16,410 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 6 predicate places. [2024-10-14 16:45:16,410 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 114 transitions, 278 flow [2024-10-14 16:45:16,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:16,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:16,412 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] [2024-10-14 16:45:16,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 16:45:16,612 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 [2024-10-14 16:45:16,613 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-14 16:45:16,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:16,614 INFO L85 PathProgramCache]: Analyzing trace with hash 400038222, now seen corresponding path program 2 times [2024-10-14 16:45:16,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:16,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957046963] [2024-10-14 16:45:16,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:16,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:16,805 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 16:45:16,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:16,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957046963] [2024-10-14 16:45:16,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957046963] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:45:16,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484935863] [2024-10-14 16:45:16,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 16:45:16,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:16,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:45:16,809 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:45:16,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 16:45:16,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 16:45:16,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 16:45:16,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 16:45:16,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:45:17,026 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 16:45:17,027 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:45:17,172 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 16:45:17,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484935863] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:45:17,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:45:17,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-14 16:45:17,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773423554] [2024-10-14 16:45:17,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:45:17,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 16:45:17,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:17,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 16:45:17,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-14 16:45:17,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 120 [2024-10-14 16:45:17,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 114 transitions, 278 flow. Second operand has 15 states, 15 states have (on average 102.06666666666666) internal successors, (1531), 15 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:17,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:17,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 120 [2024-10-14 16:45:17,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:17,468 INFO L124 PetriNetUnfolderBase]: 3/177 cut-off events. [2024-10-14 16:45:17,468 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-10-14 16:45:17,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 177 events. 3/177 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 3/172 useless extension candidates. Maximal degree in co-relation 186. Up to 9 conditions per place. [2024-10-14 16:45:17,469 INFO L140 encePairwiseOnDemand]: 114/120 looper letters, 14 selfloop transitions, 18 changer transitions 0/128 dead transitions. [2024-10-14 16:45:17,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 128 transitions, 416 flow [2024-10-14 16:45:17,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 16:45:17,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-14 16:45:17,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1835 transitions. [2024-10-14 16:45:17,475 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8495370370370371 [2024-10-14 16:45:17,475 INFO L175 Difference]: Start difference. First operand has 120 places, 114 transitions, 278 flow. Second operand 18 states and 1835 transitions. [2024-10-14 16:45:17,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 128 transitions, 416 flow [2024-10-14 16:45:17,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 128 transitions, 404 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-14 16:45:17,480 INFO L231 Difference]: Finished difference. Result has 140 places, 124 transitions, 378 flow [2024-10-14 16:45:17,481 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=378, PETRI_PLACES=140, PETRI_TRANSITIONS=124} [2024-10-14 16:45:17,483 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 26 predicate places. [2024-10-14 16:45:17,483 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 124 transitions, 378 flow [2024-10-14 16:45:17,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 102.06666666666666) internal successors, (1531), 15 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:17,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:17,485 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] [2024-10-14 16:45:17,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 16:45:17,685 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 [2024-10-14 16:45:17,686 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-14 16:45:17,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:17,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1433336693, now seen corresponding path program 3 times [2024-10-14 16:45:17,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:17,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303230239] [2024-10-14 16:45:17,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:17,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:45:17,745 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:45:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:45:17,798 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:45:17,799 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:45:17,801 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-10-14 16:45:17,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-10-14 16:45:17,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-10-14 16:45:17,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-10-14 16:45:17,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-10-14 16:45:17,804 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-10-14 16:45:17,804 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-10-14 16:45:17,804 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-10-14 16:45:17,804 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-10-14 16:45:17,804 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-10-14 16:45:17,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 16:45:17,805 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-14 16:45:17,808 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:45:17,809 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-14 16:45:17,841 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:45:17,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 185 transitions, 380 flow [2024-10-14 16:45:17,867 INFO L124 PetriNetUnfolderBase]: 17/205 cut-off events. [2024-10-14 16:45:17,868 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 16:45:17,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 205 events. 17/205 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 363 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 139. Up to 6 conditions per place. [2024-10-14 16:45:17,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 185 transitions, 380 flow [2024-10-14 16:45:17,872 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 185 transitions, 380 flow [2024-10-14 16:45:17,873 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:45:17,874 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;@15248ba3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:45:17,874 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-14 16:45:17,877 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:45:17,877 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-14 16:45:17,877 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:45:17,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:17,878 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] [2024-10-14 16:45:17,878 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-14 16:45:17,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:17,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1499362016, now seen corresponding path program 1 times [2024-10-14 16:45:17,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:17,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104607748] [2024-10-14 16:45:17,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:17,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:18,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:45:18,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:18,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104607748] [2024-10-14 16:45:18,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104607748] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:45:18,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:45:18,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 16:45:18,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872156253] [2024-10-14 16:45:18,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:45:18,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 16:45:18,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:18,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 16:45:18,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:45:18,232 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 185 [2024-10-14 16:45:18,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 185 transitions, 380 flow. Second operand has 6 states, 6 states have (on average 146.5) internal successors, (879), 6 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:18,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:18,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 185 [2024-10-14 16:45:18,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:18,364 INFO L124 PetriNetUnfolderBase]: 68/569 cut-off events. [2024-10-14 16:45:18,364 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-10-14 16:45:18,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 717 conditions, 569 events. 68/569 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2651 event pairs, 42 based on Foata normal form. 108/588 useless extension candidates. Maximal degree in co-relation 462. Up to 117 conditions per place. [2024-10-14 16:45:18,373 INFO L140 encePairwiseOnDemand]: 168/185 looper letters, 20 selfloop transitions, 5 changer transitions 0/166 dead transitions. [2024-10-14 16:45:18,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 166 transitions, 392 flow [2024-10-14 16:45:18,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 16:45:18,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 16:45:18,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 907 transitions. [2024-10-14 16:45:18,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8171171171171171 [2024-10-14 16:45:18,376 INFO L175 Difference]: Start difference. First operand has 175 places, 185 transitions, 380 flow. Second operand 6 states and 907 transitions. [2024-10-14 16:45:18,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 166 transitions, 392 flow [2024-10-14 16:45:18,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 166 transitions, 392 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 16:45:18,380 INFO L231 Difference]: Finished difference. Result has 171 places, 166 transitions, 352 flow [2024-10-14 16:45:18,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=352, PETRI_PLACES=171, PETRI_TRANSITIONS=166} [2024-10-14 16:45:18,381 INFO L277 CegarLoopForPetriNet]: 175 programPoint places, -4 predicate places. [2024-10-14 16:45:18,381 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 166 transitions, 352 flow [2024-10-14 16:45:18,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.5) internal successors, (879), 6 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:18,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:18,382 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] [2024-10-14 16:45:18,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 16:45:18,382 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-14 16:45:18,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:18,383 INFO L85 PathProgramCache]: Analyzing trace with hash 703893676, now seen corresponding path program 1 times [2024-10-14 16:45:18,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:18,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359551275] [2024-10-14 16:45:18,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:18,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:18,413 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 16:45:18,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:18,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359551275] [2024-10-14 16:45:18,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359551275] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:45:18,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:45:18,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 16:45:18,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233709884] [2024-10-14 16:45:18,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:45:18,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:45:18,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:18,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:45:18,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:45:18,439 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 185 [2024-10-14 16:45:18,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 166 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:18,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:18,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 185 [2024-10-14 16:45:18,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:18,504 INFO L124 PetriNetUnfolderBase]: 15/326 cut-off events. [2024-10-14 16:45:18,504 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-14 16:45:18,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 326 events. 15/326 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 908 event pairs, 6 based on Foata normal form. 1/294 useless extension candidates. Maximal degree in co-relation 313. Up to 24 conditions per place. [2024-10-14 16:45:18,507 INFO L140 encePairwiseOnDemand]: 182/185 looper letters, 10 selfloop transitions, 2 changer transitions 0/167 dead transitions. [2024-10-14 16:45:18,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 167 transitions, 380 flow [2024-10-14 16:45:18,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:45:18,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 16:45:18,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 493 transitions. [2024-10-14 16:45:18,509 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8882882882882883 [2024-10-14 16:45:18,509 INFO L175 Difference]: Start difference. First operand has 171 places, 166 transitions, 352 flow. Second operand 3 states and 493 transitions. [2024-10-14 16:45:18,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 167 transitions, 380 flow [2024-10-14 16:45:18,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 167 transitions, 368 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 16:45:18,512 INFO L231 Difference]: Finished difference. Result has 169 places, 167 transitions, 354 flow [2024-10-14 16:45:18,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=169, PETRI_TRANSITIONS=167} [2024-10-14 16:45:18,514 INFO L277 CegarLoopForPetriNet]: 175 programPoint places, -6 predicate places. [2024-10-14 16:45:18,515 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 167 transitions, 354 flow [2024-10-14 16:45:18,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:18,517 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:18,517 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] [2024-10-14 16:45:18,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 16:45:18,517 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-14 16:45:18,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:18,518 INFO L85 PathProgramCache]: Analyzing trace with hash 963143664, now seen corresponding path program 1 times [2024-10-14 16:45:18,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:18,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299495810] [2024-10-14 16:45:18,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:18,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:18,589 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 16:45:18,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:18,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299495810] [2024-10-14 16:45:18,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299495810] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:45:18,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974887719] [2024-10-14 16:45:18,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:18,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:18,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:45:18,594 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:45:18,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 16:45:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:18,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 16:45:18,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:45:18,716 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 16:45:18,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:45:18,767 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 16:45:18,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974887719] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:45:18,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:45:18,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-14 16:45:18,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709697302] [2024-10-14 16:45:18,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:45:18,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 16:45:18,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:18,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 16:45:18,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 16:45:18,862 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 185 [2024-10-14 16:45:18,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 167 transitions, 354 flow. Second operand has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:18,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:18,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 185 [2024-10-14 16:45:18,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:18,989 INFO L124 PetriNetUnfolderBase]: 15/341 cut-off events. [2024-10-14 16:45:18,990 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-14 16:45:18,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 341 events. 15/341 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 883 event pairs, 6 based on Foata normal form. 2/310 useless extension candidates. Maximal degree in co-relation 348. Up to 24 conditions per place. [2024-10-14 16:45:18,993 INFO L140 encePairwiseOnDemand]: 179/185 looper letters, 14 selfloop transitions, 9 changer transitions 0/175 dead transitions. [2024-10-14 16:45:18,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 175 transitions, 418 flow [2024-10-14 16:45:18,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 16:45:18,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 16:45:18,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1438 transitions. [2024-10-14 16:45:18,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8636636636636636 [2024-10-14 16:45:18,996 INFO L175 Difference]: Start difference. First operand has 169 places, 167 transitions, 354 flow. Second operand 9 states and 1438 transitions. [2024-10-14 16:45:18,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 175 transitions, 418 flow [2024-10-14 16:45:18,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 175 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 16:45:19,000 INFO L231 Difference]: Finished difference. Result has 179 places, 173 transitions, 402 flow [2024-10-14 16:45:19,000 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=402, PETRI_PLACES=179, PETRI_TRANSITIONS=173} [2024-10-14 16:45:19,001 INFO L277 CegarLoopForPetriNet]: 175 programPoint places, 4 predicate places. [2024-10-14 16:45:19,001 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 173 transitions, 402 flow [2024-10-14 16:45:19,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:19,003 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:19,003 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] [2024-10-14 16:45:19,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 16:45:19,203 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 [2024-10-14 16:45:19,204 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-14 16:45:19,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:19,205 INFO L85 PathProgramCache]: Analyzing trace with hash -2074015376, now seen corresponding path program 2 times [2024-10-14 16:45:19,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:19,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216507593] [2024-10-14 16:45:19,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:19,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:19,388 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 16:45:19,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:19,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216507593] [2024-10-14 16:45:19,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216507593] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:45:19,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181656394] [2024-10-14 16:45:19,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 16:45:19,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:19,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:45:19,391 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:45:19,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 16:45:19,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 16:45:19,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 16:45:19,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 16:45:19,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:45:19,574 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 16:45:19,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:45:19,717 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 16:45:19,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181656394] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:45:19,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:45:19,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-14 16:45:19,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527690724] [2024-10-14 16:45:19,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:45:19,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 16:45:19,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:19,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 16:45:19,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-14 16:45:19,858 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 185 [2024-10-14 16:45:19,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 173 transitions, 402 flow. Second operand has 15 states, 15 states have (on average 159.13333333333333) internal successors, (2387), 15 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:19,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:19,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 185 [2024-10-14 16:45:19,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:20,043 INFO L124 PetriNetUnfolderBase]: 15/380 cut-off events. [2024-10-14 16:45:20,044 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-10-14 16:45:20,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 380 events. 15/380 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 883 event pairs, 6 based on Foata normal form. 3/350 useless extension candidates. Maximal degree in co-relation 310. Up to 24 conditions per place. [2024-10-14 16:45:20,046 INFO L140 encePairwiseOnDemand]: 179/185 looper letters, 17 selfloop transitions, 18 changer transitions 0/187 dead transitions. [2024-10-14 16:45:20,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 187 transitions, 546 flow [2024-10-14 16:45:20,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 16:45:20,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-14 16:45:20,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2864 transitions. [2024-10-14 16:45:20,052 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8600600600600601 [2024-10-14 16:45:20,052 INFO L175 Difference]: Start difference. First operand has 179 places, 173 transitions, 402 flow. Second operand 18 states and 2864 transitions. [2024-10-14 16:45:20,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 187 transitions, 546 flow [2024-10-14 16:45:20,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 187 transitions, 534 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-14 16:45:20,056 INFO L231 Difference]: Finished difference. Result has 199 places, 183 transitions, 502 flow [2024-10-14 16:45:20,056 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=502, PETRI_PLACES=199, PETRI_TRANSITIONS=183} [2024-10-14 16:45:20,057 INFO L277 CegarLoopForPetriNet]: 175 programPoint places, 24 predicate places. [2024-10-14 16:45:20,057 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 183 transitions, 502 flow [2024-10-14 16:45:20,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 159.13333333333333) internal successors, (2387), 15 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:20,058 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:20,059 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] [2024-10-14 16:45:20,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 16:45:20,259 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 [2024-10-14 16:45:20,260 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-14 16:45:20,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:20,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1145699372, now seen corresponding path program 3 times [2024-10-14 16:45:20,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:20,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162169491] [2024-10-14 16:45:20,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:20,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:45:20,293 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:45:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:45:20,323 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:45:20,323 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:45:20,324 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-10-14 16:45:20,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-10-14 16:45:20,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-10-14 16:45:20,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-10-14 16:45:20,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-10-14 16:45:20,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-10-14 16:45:20,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-10-14 16:45:20,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2024-10-14 16:45:20,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-10-14 16:45:20,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-10-14 16:45:20,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-10-14 16:45:20,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-10-14 16:45:20,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-10-14 16:45:20,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-10-14 16:45:20,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 16:45:20,326 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-14 16:45:20,327 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:45:20,327 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-14 16:45:20,377 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:45:20,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 250 transitions, 518 flow [2024-10-14 16:45:20,422 INFO L124 PetriNetUnfolderBase]: 24/281 cut-off events. [2024-10-14 16:45:20,422 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 16:45:20,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 281 events. 24/281 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 705 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 209. Up to 8 conditions per place. [2024-10-14 16:45:20,425 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 250 transitions, 518 flow [2024-10-14 16:45:20,429 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 250 transitions, 518 flow [2024-10-14 16:45:20,432 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:45:20,433 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;@15248ba3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:45:20,433 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-14 16:45:20,438 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:45:20,438 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-14 16:45:20,438 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:45:20,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:20,439 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] [2024-10-14 16:45:20,439 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-14 16:45:20,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:20,439 INFO L85 PathProgramCache]: Analyzing trace with hash 2003650714, now seen corresponding path program 1 times [2024-10-14 16:45:20,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:20,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122136186] [2024-10-14 16:45:20,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:20,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:20,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:45:20,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:20,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122136186] [2024-10-14 16:45:20,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122136186] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:45:20,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:45:20,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 16:45:20,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631598753] [2024-10-14 16:45:20,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:45:20,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 16:45:20,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:20,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 16:45:20,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:45:20,823 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 250 [2024-10-14 16:45:20,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 250 transitions, 518 flow. Second operand has 6 states, 6 states have (on average 199.5) internal successors, (1197), 6 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:20,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:20,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 250 [2024-10-14 16:45:20,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:21,387 INFO L124 PetriNetUnfolderBase]: 870/4019 cut-off events. [2024-10-14 16:45:21,387 INFO L125 PetriNetUnfolderBase]: For 328/328 co-relation queries the response was YES. [2024-10-14 16:45:21,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5438 conditions, 4019 events. 870/4019 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 36370 event pairs, 630 based on Foata normal form. 964/4251 useless extension candidates. Maximal degree in co-relation 3234. Up to 1191 conditions per place. [2024-10-14 16:45:21,430 INFO L140 encePairwiseOnDemand]: 229/250 looper letters, 27 selfloop transitions, 5 changer transitions 0/225 dead transitions. [2024-10-14 16:45:21,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 225 transitions, 532 flow [2024-10-14 16:45:21,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 16:45:21,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 16:45:21,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1236 transitions. [2024-10-14 16:45:21,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.824 [2024-10-14 16:45:21,434 INFO L175 Difference]: Start difference. First operand has 236 places, 250 transitions, 518 flow. Second operand 6 states and 1236 transitions. [2024-10-14 16:45:21,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 225 transitions, 532 flow [2024-10-14 16:45:21,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 225 transitions, 530 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-14 16:45:21,489 INFO L231 Difference]: Finished difference. Result has 230 places, 225 transitions, 476 flow [2024-10-14 16:45:21,489 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=476, PETRI_PLACES=230, PETRI_TRANSITIONS=225} [2024-10-14 16:45:21,491 INFO L277 CegarLoopForPetriNet]: 236 programPoint places, -6 predicate places. [2024-10-14 16:45:21,491 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 225 transitions, 476 flow [2024-10-14 16:45:21,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 199.5) internal successors, (1197), 6 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:21,491 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:21,492 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] [2024-10-14 16:45:21,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 16:45:21,492 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-14 16:45:21,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:21,492 INFO L85 PathProgramCache]: Analyzing trace with hash 604598762, now seen corresponding path program 1 times [2024-10-14 16:45:21,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:21,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223386324] [2024-10-14 16:45:21,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:21,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 16:45:21,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:21,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223386324] [2024-10-14 16:45:21,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223386324] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:45:21,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:45:21,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 16:45:21,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476536954] [2024-10-14 16:45:21,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:45:21,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:45:21,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:21,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:45:21,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:45:21,548 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 250 [2024-10-14 16:45:21,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 225 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:21,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:21,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 250 [2024-10-14 16:45:21,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:21,683 INFO L124 PetriNetUnfolderBase]: 69/953 cut-off events. [2024-10-14 16:45:21,684 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-10-14 16:45:21,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 953 events. 69/953 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5366 event pairs, 42 based on Foata normal form. 1/845 useless extension candidates. Maximal degree in co-relation 1030. Up to 87 conditions per place. [2024-10-14 16:45:21,696 INFO L140 encePairwiseOnDemand]: 247/250 looper letters, 13 selfloop transitions, 2 changer transitions 0/226 dead transitions. [2024-10-14 16:45:21,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 226 transitions, 510 flow [2024-10-14 16:45:21,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:45:21,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 16:45:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 667 transitions. [2024-10-14 16:45:21,699 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8893333333333333 [2024-10-14 16:45:21,699 INFO L175 Difference]: Start difference. First operand has 230 places, 225 transitions, 476 flow. Second operand 3 states and 667 transitions. [2024-10-14 16:45:21,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 226 transitions, 510 flow [2024-10-14 16:45:21,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 226 transitions, 498 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 16:45:21,704 INFO L231 Difference]: Finished difference. Result has 228 places, 226 transitions, 478 flow [2024-10-14 16:45:21,704 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=478, PETRI_PLACES=228, PETRI_TRANSITIONS=226} [2024-10-14 16:45:21,705 INFO L277 CegarLoopForPetriNet]: 236 programPoint places, -8 predicate places. [2024-10-14 16:45:21,705 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 226 transitions, 478 flow [2024-10-14 16:45:21,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:21,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:21,706 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] [2024-10-14 16:45:21,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 16:45:21,706 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-14 16:45:21,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:21,706 INFO L85 PathProgramCache]: Analyzing trace with hash 2072734752, now seen corresponding path program 1 times [2024-10-14 16:45:21,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:21,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937759221] [2024-10-14 16:45:21,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:21,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:21,766 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 16:45:21,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:21,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937759221] [2024-10-14 16:45:21,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937759221] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:45:21,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060780497] [2024-10-14 16:45:21,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:21,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:21,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:45:21,769 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:45:21,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 16:45:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:21,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 16:45:21,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:45:21,942 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 16:45:21,942 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:45:21,985 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 16:45:21,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060780497] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:45:21,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:45:21,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-14 16:45:21,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476910463] [2024-10-14 16:45:21,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:45:21,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 16:45:21,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:21,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 16:45:21,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 16:45:22,077 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 250 [2024-10-14 16:45:22,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 226 transitions, 478 flow. Second operand has 10 states, 10 states have (on average 216.1) internal successors, (2161), 10 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:22,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:22,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 250 [2024-10-14 16:45:22,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:22,322 INFO L124 PetriNetUnfolderBase]: 69/968 cut-off events. [2024-10-14 16:45:22,322 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-10-14 16:45:22,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1117 conditions, 968 events. 69/968 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5346 event pairs, 42 based on Foata normal form. 2/861 useless extension candidates. Maximal degree in co-relation 1065. Up to 87 conditions per place. [2024-10-14 16:45:22,334 INFO L140 encePairwiseOnDemand]: 244/250 looper letters, 17 selfloop transitions, 9 changer transitions 0/234 dead transitions. [2024-10-14 16:45:22,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 234 transitions, 548 flow [2024-10-14 16:45:22,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 16:45:22,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 16:45:22,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1954 transitions. [2024-10-14 16:45:22,339 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8684444444444445 [2024-10-14 16:45:22,339 INFO L175 Difference]: Start difference. First operand has 228 places, 226 transitions, 478 flow. Second operand 9 states and 1954 transitions. [2024-10-14 16:45:22,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 234 transitions, 548 flow [2024-10-14 16:45:22,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 234 transitions, 546 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 16:45:22,345 INFO L231 Difference]: Finished difference. Result has 238 places, 232 transitions, 526 flow [2024-10-14 16:45:22,346 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=526, PETRI_PLACES=238, PETRI_TRANSITIONS=232} [2024-10-14 16:45:22,346 INFO L277 CegarLoopForPetriNet]: 236 programPoint places, 2 predicate places. [2024-10-14 16:45:22,346 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 232 transitions, 526 flow [2024-10-14 16:45:22,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 216.1) internal successors, (2161), 10 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:22,347 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:22,348 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] [2024-10-14 16:45:22,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 16:45:22,551 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 [2024-10-14 16:45:22,552 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-14 16:45:22,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:22,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1559282592, now seen corresponding path program 2 times [2024-10-14 16:45:22,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:22,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440683281] [2024-10-14 16:45:22,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:22,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:22,694 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 16:45:22,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:22,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440683281] [2024-10-14 16:45:22,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440683281] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:45:22,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515157073] [2024-10-14 16:45:22,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 16:45:22,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:22,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:45:22,698 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) [2024-10-14 16:45:22,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 16:45:22,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 16:45:22,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 16:45:22,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 16:45:22,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:45:22,873 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 16:45:22,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:45:22,981 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 16:45:22,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515157073] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:45:22,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:45:22,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-14 16:45:22,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661150643] [2024-10-14 16:45:22,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:45:22,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 16:45:22,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:22,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 16:45:22,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-14 16:45:23,088 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 250 [2024-10-14 16:45:23,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 232 transitions, 526 flow. Second operand has 15 states, 15 states have (on average 216.2) internal successors, (3243), 15 states have internal predecessors, (3243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:23,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:23,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 250 [2024-10-14 16:45:23,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:23,372 INFO L124 PetriNetUnfolderBase]: 69/1007 cut-off events. [2024-10-14 16:45:23,373 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-10-14 16:45:23,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1210 conditions, 1007 events. 69/1007 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5348 event pairs, 42 based on Foata normal form. 3/901 useless extension candidates. Maximal degree in co-relation 1027. Up to 87 conditions per place. [2024-10-14 16:45:23,386 INFO L140 encePairwiseOnDemand]: 244/250 looper letters, 20 selfloop transitions, 18 changer transitions 0/246 dead transitions. [2024-10-14 16:45:23,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 246 transitions, 676 flow [2024-10-14 16:45:23,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 16:45:23,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-14 16:45:23,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3893 transitions. [2024-10-14 16:45:23,396 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8651111111111112 [2024-10-14 16:45:23,396 INFO L175 Difference]: Start difference. First operand has 238 places, 232 transitions, 526 flow. Second operand 18 states and 3893 transitions. [2024-10-14 16:45:23,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 246 transitions, 676 flow [2024-10-14 16:45:23,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 246 transitions, 664 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-14 16:45:23,401 INFO L231 Difference]: Finished difference. Result has 258 places, 242 transitions, 626 flow [2024-10-14 16:45:23,401 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=626, PETRI_PLACES=258, PETRI_TRANSITIONS=242} [2024-10-14 16:45:23,403 INFO L277 CegarLoopForPetriNet]: 236 programPoint places, 22 predicate places. [2024-10-14 16:45:23,403 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 242 transitions, 626 flow [2024-10-14 16:45:23,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 216.2) internal successors, (3243), 15 states have internal predecessors, (3243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:23,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:23,404 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] [2024-10-14 16:45:23,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-14 16:45:23,605 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 [2024-10-14 16:45:23,606 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-14 16:45:23,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:23,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1069074134, now seen corresponding path program 3 times [2024-10-14 16:45:23,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:23,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867283887] [2024-10-14 16:45:23,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:23,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:45:23,647 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:45:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:45:23,688 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:45:23,689 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:45:23,689 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-10-14 16:45:23,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-10-14 16:45:23,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-10-14 16:45:23,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-10-14 16:45:23,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-10-14 16:45:23,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-10-14 16:45:23,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-10-14 16:45:23,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-10-14 16:45:23,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-10-14 16:45:23,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-10-14 16:45:23,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-10-14 16:45:23,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-10-14 16:45:23,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-10-14 16:45:23,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-10-14 16:45:23,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-10-14 16:45:23,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-10-14 16:45:23,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-10-14 16:45:23,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-10-14 16:45:23,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 16:45:23,693 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-14 16:45:23,693 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:45:23,693 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-14 16:45:23,748 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:45:23,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 315 transitions, 658 flow [2024-10-14 16:45:23,794 INFO L124 PetriNetUnfolderBase]: 31/357 cut-off events. [2024-10-14 16:45:23,794 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-14 16:45:23,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 357 events. 31/357 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1081 event pairs, 0 based on Foata normal form. 0/304 useless extension candidates. Maximal degree in co-relation 289. Up to 10 conditions per place. [2024-10-14 16:45:23,799 INFO L82 GeneralOperation]: Start removeDead. Operand has 297 places, 315 transitions, 658 flow [2024-10-14 16:45:23,803 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 297 places, 315 transitions, 658 flow [2024-10-14 16:45:23,804 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:45:23,805 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@15248ba3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:45:23,805 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-10-14 16:45:23,808 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:45:23,808 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-14 16:45:23,808 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:45:23,808 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:23,808 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] [2024-10-14 16:45:23,808 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-14 16:45:23,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:23,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1140516747, now seen corresponding path program 1 times [2024-10-14 16:45:23,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:23,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292610948] [2024-10-14 16:45:23,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:23,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:45:23,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:23,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292610948] [2024-10-14 16:45:23,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292610948] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:45:23,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:45:23,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 16:45:23,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131292405] [2024-10-14 16:45:23,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:45:23,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 16:45:23,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:23,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 16:45:23,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:45:24,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 315 [2024-10-14 16:45:24,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 315 transitions, 658 flow. Second operand has 6 states, 6 states have (on average 252.5) internal successors, (1515), 6 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:24,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:24,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 315 [2024-10-14 16:45:24,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:28,920 INFO L124 PetriNetUnfolderBase]: 8893/30372 cut-off events. [2024-10-14 16:45:28,921 INFO L125 PetriNetUnfolderBase]: For 3794/3794 co-relation queries the response was YES. [2024-10-14 16:45:29,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43446 conditions, 30372 events. 8893/30372 cut-off events. For 3794/3794 co-relation queries the response was YES. Maximal size of possible extension queue 992. Compared 379573 event pairs, 6804 based on Foata normal form. 8471/33351 useless extension candidates. Maximal degree in co-relation 22386. Up to 11130 conditions per place. [2024-10-14 16:45:29,453 INFO L140 encePairwiseOnDemand]: 290/315 looper letters, 34 selfloop transitions, 5 changer transitions 0/284 dead transitions. [2024-10-14 16:45:29,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 284 transitions, 674 flow [2024-10-14 16:45:29,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 16:45:29,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 16:45:29,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1565 transitions. [2024-10-14 16:45:29,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.828042328042328 [2024-10-14 16:45:29,458 INFO L175 Difference]: Start difference. First operand has 297 places, 315 transitions, 658 flow. Second operand 6 states and 1565 transitions. [2024-10-14 16:45:29,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 284 transitions, 674 flow [2024-10-14 16:45:29,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 284 transitions, 668 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-14 16:45:29,464 INFO L231 Difference]: Finished difference. Result has 289 places, 284 transitions, 600 flow [2024-10-14 16:45:29,464 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=600, PETRI_PLACES=289, PETRI_TRANSITIONS=284} [2024-10-14 16:45:29,465 INFO L277 CegarLoopForPetriNet]: 297 programPoint places, -8 predicate places. [2024-10-14 16:45:29,465 INFO L471 AbstractCegarLoop]: Abstraction has has 289 places, 284 transitions, 600 flow [2024-10-14 16:45:29,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.5) internal successors, (1515), 6 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:29,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:29,466 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] [2024-10-14 16:45:29,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 16:45:29,466 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-14 16:45:29,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:29,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1156225586, now seen corresponding path program 1 times [2024-10-14 16:45:29,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:29,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133205919] [2024-10-14 16:45:29,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:29,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:29,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:45:29,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:29,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133205919] [2024-10-14 16:45:29,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133205919] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:45:29,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:45:29,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 16:45:29,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761033039] [2024-10-14 16:45:29,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:45:29,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:45:29,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:29,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:45:29,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:45:29,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 315 [2024-10-14 16:45:29,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 284 transitions, 600 flow. Second operand has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:29,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:29,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 315 [2024-10-14 16:45:29,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:30,104 INFO L124 PetriNetUnfolderBase]: 285/2888 cut-off events. [2024-10-14 16:45:30,104 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2024-10-14 16:45:30,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3354 conditions, 2888 events. 285/2888 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 24337 event pairs, 204 based on Foata normal form. 1/2551 useless extension candidates. Maximal degree in co-relation 3289. Up to 330 conditions per place. [2024-10-14 16:45:30,147 INFO L140 encePairwiseOnDemand]: 312/315 looper letters, 16 selfloop transitions, 2 changer transitions 0/285 dead transitions. [2024-10-14 16:45:30,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 285 transitions, 640 flow [2024-10-14 16:45:30,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:45:30,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 16:45:30,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 841 transitions. [2024-10-14 16:45:30,151 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8899470899470899 [2024-10-14 16:45:30,151 INFO L175 Difference]: Start difference. First operand has 289 places, 284 transitions, 600 flow. Second operand 3 states and 841 transitions. [2024-10-14 16:45:30,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 285 transitions, 640 flow [2024-10-14 16:45:30,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 285 transitions, 628 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 16:45:30,159 INFO L231 Difference]: Finished difference. Result has 287 places, 285 transitions, 602 flow [2024-10-14 16:45:30,159 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=602, PETRI_PLACES=287, PETRI_TRANSITIONS=285} [2024-10-14 16:45:30,160 INFO L277 CegarLoopForPetriNet]: 297 programPoint places, -10 predicate places. [2024-10-14 16:45:30,160 INFO L471 AbstractCegarLoop]: Abstraction has has 287 places, 285 transitions, 602 flow [2024-10-14 16:45:30,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:30,161 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:30,161 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] [2024-10-14 16:45:30,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-14 16:45:30,161 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-14 16:45:30,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:30,162 INFO L85 PathProgramCache]: Analyzing trace with hash 756568993, now seen corresponding path program 1 times [2024-10-14 16:45:30,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:30,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852658885] [2024-10-14 16:45:30,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:30,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:30,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:45:30,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:30,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852658885] [2024-10-14 16:45:30,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852658885] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:45:30,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711071561] [2024-10-14 16:45:30,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:30,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:30,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:45:30,285 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) [2024-10-14 16:45:30,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 16:45:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:30,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 16:45:30,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:45:30,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:45:30,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:45:30,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:45:30,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711071561] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:45:30,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:45:30,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-14 16:45:30,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177315154] [2024-10-14 16:45:30,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:45:30,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 16:45:30,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:30,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 16:45:30,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 16:45:30,531 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 315 [2024-10-14 16:45:30,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 285 transitions, 602 flow. Second operand has 10 states, 10 states have (on average 272.9) internal successors, (2729), 10 states have internal predecessors, (2729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:30,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:30,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 315 [2024-10-14 16:45:30,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:30,946 INFO L124 PetriNetUnfolderBase]: 285/2903 cut-off events. [2024-10-14 16:45:30,946 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2024-10-14 16:45:30,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3377 conditions, 2903 events. 285/2903 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 24381 event pairs, 204 based on Foata normal form. 2/2567 useless extension candidates. Maximal degree in co-relation 3324. Up to 330 conditions per place. [2024-10-14 16:45:31,000 INFO L140 encePairwiseOnDemand]: 309/315 looper letters, 20 selfloop transitions, 9 changer transitions 0/293 dead transitions. [2024-10-14 16:45:31,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 293 transitions, 678 flow [2024-10-14 16:45:31,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 16:45:31,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 16:45:31,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2470 transitions. [2024-10-14 16:45:31,006 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8712522045855379 [2024-10-14 16:45:31,006 INFO L175 Difference]: Start difference. First operand has 287 places, 285 transitions, 602 flow. Second operand 9 states and 2470 transitions. [2024-10-14 16:45:31,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 293 transitions, 678 flow [2024-10-14 16:45:31,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 293 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 16:45:31,013 INFO L231 Difference]: Finished difference. Result has 297 places, 291 transitions, 650 flow [2024-10-14 16:45:31,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=650, PETRI_PLACES=297, PETRI_TRANSITIONS=291} [2024-10-14 16:45:31,014 INFO L277 CegarLoopForPetriNet]: 297 programPoint places, 0 predicate places. [2024-10-14 16:45:31,014 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 291 transitions, 650 flow [2024-10-14 16:45:31,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 272.9) internal successors, (2729), 10 states have internal predecessors, (2729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:31,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:31,017 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] [2024-10-14 16:45:31,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 16:45:31,217 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 [2024-10-14 16:45:31,218 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-14 16:45:31,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:31,218 INFO L85 PathProgramCache]: Analyzing trace with hash 890790721, now seen corresponding path program 2 times [2024-10-14 16:45:31,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:31,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465020612] [2024-10-14 16:45:31,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:31,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:31,390 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:45:31,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:31,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465020612] [2024-10-14 16:45:31,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465020612] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:45:31,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032599410] [2024-10-14 16:45:31,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 16:45:31,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:31,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:45:31,393 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) [2024-10-14 16:45:31,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 16:45:31,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 16:45:31,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 16:45:31,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 16:45:31,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:45:31,559 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 [2024-10-14 16:45:31,581 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 [2024-10-14 16:45:31,615 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 16:45:31,616 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 [2024-10-14 16:45:31,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 16:45:31,658 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 [2024-10-14 16:45:31,688 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-14 16:45:31,689 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 16:45:31,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032599410] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:45:31,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 16:45:31,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-10-14 16:45:31,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030014473] [2024-10-14 16:45:31,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:45:31,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 16:45:31,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:31,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 16:45:31,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-14 16:45:31,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 315 [2024-10-14 16:45:31,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 291 transitions, 650 flow. Second operand has 6 states, 6 states have (on average 266.3333333333333) internal successors, (1598), 6 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:31,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:31,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 315 [2024-10-14 16:45:31,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:33,046 INFO L124 PetriNetUnfolderBase]: 1212/7444 cut-off events. [2024-10-14 16:45:33,047 INFO L125 PetriNetUnfolderBase]: For 837/837 co-relation queries the response was YES. [2024-10-14 16:45:33,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9535 conditions, 7444 events. 1212/7444 cut-off events. For 837/837 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 79430 event pairs, 447 based on Foata normal form. 0/6514 useless extension candidates. Maximal degree in co-relation 9425. Up to 701 conditions per place. [2024-10-14 16:45:33,128 INFO L140 encePairwiseOnDemand]: 309/315 looper letters, 58 selfloop transitions, 5 changer transitions 0/326 dead transitions. [2024-10-14 16:45:33,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 326 transitions, 906 flow [2024-10-14 16:45:33,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 16:45:33,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 16:45:33,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1648 transitions. [2024-10-14 16:45:33,131 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8719576719576719 [2024-10-14 16:45:33,131 INFO L175 Difference]: Start difference. First operand has 297 places, 291 transitions, 650 flow. Second operand 6 states and 1648 transitions. [2024-10-14 16:45:33,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 326 transitions, 906 flow [2024-10-14 16:45:33,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 326 transitions, 900 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-14 16:45:33,138 INFO L231 Difference]: Finished difference. Result has 300 places, 290 transitions, 652 flow [2024-10-14 16:45:33,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=652, PETRI_PLACES=300, PETRI_TRANSITIONS=290} [2024-10-14 16:45:33,139 INFO L277 CegarLoopForPetriNet]: 297 programPoint places, 3 predicate places. [2024-10-14 16:45:33,139 INFO L471 AbstractCegarLoop]: Abstraction has has 300 places, 290 transitions, 652 flow [2024-10-14 16:45:33,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 266.3333333333333) internal successors, (1598), 6 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:33,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:33,140 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] [2024-10-14 16:45:33,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-14 16:45:33,344 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 [2024-10-14 16:45:33,345 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-14 16:45:33,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:33,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1315080527, now seen corresponding path program 1 times [2024-10-14 16:45:33,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:33,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145374737] [2024-10-14 16:45:33,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:33,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:33,486 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-14 16:45:33,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:33,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145374737] [2024-10-14 16:45:33,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145374737] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:45:33,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422825642] [2024-10-14 16:45:33,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:33,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:33,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:45:33,489 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) [2024-10-14 16:45:33,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 16:45:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:33,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 16:45:33,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:45:33,700 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-14 16:45:33,700 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:45:33,802 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-14 16:45:33,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422825642] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:45:33,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:45:33,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-14 16:45:33,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678198108] [2024-10-14 16:45:33,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:45:33,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 16:45:33,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:33,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 16:45:33,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-14 16:45:33,912 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 315 [2024-10-14 16:45:33,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 290 transitions, 652 flow. Second operand has 15 states, 15 states have (on average 273.26666666666665) internal successors, (4099), 15 states have internal predecessors, (4099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:33,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:33,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 315 [2024-10-14 16:45:33,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:34,502 INFO L124 PetriNetUnfolderBase]: 285/2941 cut-off events. [2024-10-14 16:45:34,502 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2024-10-14 16:45:34,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3469 conditions, 2941 events. 285/2941 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 24377 event pairs, 204 based on Foata normal form. 3/2607 useless extension candidates. Maximal degree in co-relation 3290. Up to 330 conditions per place. [2024-10-14 16:45:34,540 INFO L140 encePairwiseOnDemand]: 309/315 looper letters, 23 selfloop transitions, 18 changer transitions 0/304 dead transitions. [2024-10-14 16:45:34,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 304 transitions, 802 flow [2024-10-14 16:45:34,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 16:45:34,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-14 16:45:34,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4922 transitions. [2024-10-14 16:45:34,548 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8680776014109347 [2024-10-14 16:45:34,549 INFO L175 Difference]: Start difference. First operand has 300 places, 290 transitions, 652 flow. Second operand 18 states and 4922 transitions. [2024-10-14 16:45:34,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 304 transitions, 802 flow [2024-10-14 16:45:34,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 304 transitions, 792 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 16:45:34,556 INFO L231 Difference]: Finished difference. Result has 316 places, 300 transitions, 748 flow [2024-10-14 16:45:34,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=748, PETRI_PLACES=316, PETRI_TRANSITIONS=300} [2024-10-14 16:45:34,557 INFO L277 CegarLoopForPetriNet]: 297 programPoint places, 19 predicate places. [2024-10-14 16:45:34,557 INFO L471 AbstractCegarLoop]: Abstraction has has 316 places, 300 transitions, 748 flow [2024-10-14 16:45:34,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 273.26666666666665) internal successors, (4099), 15 states have internal predecessors, (4099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:34,559 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:34,560 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] [2024-10-14 16:45:34,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-14 16:45:34,763 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 [2024-10-14 16:45:34,764 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-14 16:45:34,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:34,764 INFO L85 PathProgramCache]: Analyzing trace with hash -290763552, now seen corresponding path program 2 times [2024-10-14 16:45:34,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:34,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464366849] [2024-10-14 16:45:34,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:34,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:45:34,808 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:45:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:45:34,860 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:45:34,861 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:45:34,861 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-10-14 16:45:34,861 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-10-14 16:45:34,861 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-10-14 16:45:34,862 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-10-14 16:45:34,862 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-10-14 16:45:34,862 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-10-14 16:45:34,862 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-10-14 16:45:34,862 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-10-14 16:45:34,862 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-10-14 16:45:34,863 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-10-14 16:45:34,863 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-10-14 16:45:34,863 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-10-14 16:45:34,863 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-10-14 16:45:34,863 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-10-14 16:45:34,863 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-10-14 16:45:34,863 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-10-14 16:45:34,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-10-14 16:45:34,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-10-14 16:45:34,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-10-14 16:45:34,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-10-14 16:45:34,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-10-14 16:45:34,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-10-14 16:45:34,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-14 16:45:34,865 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-10-14 16:45:34,866 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:45:34,866 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-14 16:45:34,919 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:45:34,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 358 places, 380 transitions, 800 flow [2024-10-14 16:45:35,006 INFO L124 PetriNetUnfolderBase]: 38/433 cut-off events. [2024-10-14 16:45:35,007 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-14 16:45:35,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 433 events. 38/433 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1465 event pairs, 0 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 370. Up to 12 conditions per place. [2024-10-14 16:45:35,012 INFO L82 GeneralOperation]: Start removeDead. Operand has 358 places, 380 transitions, 800 flow [2024-10-14 16:45:35,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 358 places, 380 transitions, 800 flow [2024-10-14 16:45:35,018 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:45:35,019 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@15248ba3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:45:35,019 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-10-14 16:45:35,024 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:45:35,024 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-14 16:45:35,024 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:45:35,024 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:35,024 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] [2024-10-14 16:45:35,025 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-10-14 16:45:35,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:35,025 INFO L85 PathProgramCache]: Analyzing trace with hash 656794225, now seen corresponding path program 1 times [2024-10-14 16:45:35,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:35,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143564345] [2024-10-14 16:45:35,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:35,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:35,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:45:35,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:35,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143564345] [2024-10-14 16:45:35,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143564345] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:45:35,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:45:35,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 16:45:35,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563355905] [2024-10-14 16:45:35,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:45:35,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 16:45:35,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:35,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 16:45:35,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:45:35,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 380 [2024-10-14 16:45:35,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 380 transitions, 800 flow. Second operand has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:35,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:35,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 380 [2024-10-14 16:45:35,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand