./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-race-challenges/thread-join-array-const-race-2.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-race-challenges/thread-join-array-const-race-2.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 860528881155a718438c0581485d42cc235131c30c9ba38f0a976304f206e75d --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 17:18:35,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 17:18:35,576 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-14 17:18:35,581 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 17:18:35,581 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 17:18:35,613 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 17:18:35,613 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 17:18:35,614 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 17:18:35,614 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 17:18:35,615 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 17:18:35,615 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 17:18:35,616 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 17:18:35,616 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 17:18:35,616 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 17:18:35,617 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 17:18:35,617 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 17:18:35,617 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 17:18:35,619 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 17:18:35,619 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 17:18:35,620 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 17:18:35,622 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 17:18:35,623 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 17:18:35,623 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-14 17:18:35,623 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 17:18:35,623 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 17:18:35,624 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 17:18:35,624 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 17:18:35,624 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 17:18:35,624 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 17:18:35,625 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 17:18:35,625 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 17:18:35,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:18:35,625 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 17:18:35,626 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 17:18:35,626 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 17:18:35,628 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 17:18:35,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 17:18:35,628 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 17:18:35,629 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 17:18:35,629 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 17:18:35,629 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 17:18:35,629 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 860528881155a718438c0581485d42cc235131c30c9ba38f0a976304f206e75d [2024-10-14 17:18:35,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 17:18:35,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 17:18:35,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 17:18:35,920 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 17:18:35,921 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 17:18:35,922 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-race-challenges/thread-join-array-const-race-2.i [2024-10-14 17:18:37,397 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 17:18:37,616 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 17:18:37,617 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-race-challenges/thread-join-array-const-race-2.i [2024-10-14 17:18:37,629 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4209657d9/09964e87b6364187903751aaa32d984a/FLAGdfb565e5d [2024-10-14 17:18:37,640 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4209657d9/09964e87b6364187903751aaa32d984a [2024-10-14 17:18:37,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 17:18:37,643 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 17:18:37,644 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 17:18:37,644 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 17:18:37,648 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 17:18:37,649 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:18:37" (1/1) ... [2024-10-14 17:18:37,650 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71837cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:18:37, skipping insertion in model container [2024-10-14 17:18:37,650 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:18:37" (1/1) ... [2024-10-14 17:18:37,695 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 17:18:38,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:18:38,036 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 17:18:38,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:18:38,127 INFO L204 MainTranslator]: Completed translation [2024-10-14 17:18:38,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:18:38 WrapperNode [2024-10-14 17:18:38,127 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 17:18:38,129 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 17:18:38,129 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 17:18:38,129 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 17:18:38,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:18:38" (1/1) ... [2024-10-14 17:18:38,163 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:18:38" (1/1) ... [2024-10-14 17:18:38,190 INFO L138 Inliner]: procedures = 158, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 59 [2024-10-14 17:18:38,193 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 17:18:38,194 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 17:18:38,195 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 17:18:38,195 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 17:18:38,203 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:18:38" (1/1) ... [2024-10-14 17:18:38,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:18:38" (1/1) ... [2024-10-14 17:18:38,217 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:18:38" (1/1) ... [2024-10-14 17:18:38,222 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:18:38" (1/1) ... [2024-10-14 17:18:38,230 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:18:38" (1/1) ... [2024-10-14 17:18:38,237 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:18:38" (1/1) ... [2024-10-14 17:18:38,239 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:18:38" (1/1) ... [2024-10-14 17:18:38,240 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:18:38" (1/1) ... [2024-10-14 17:18:38,242 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 17:18:38,243 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 17:18:38,243 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 17:18:38,243 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 17:18:38,244 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:18:38" (1/1) ... [2024-10-14 17:18:38,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:18:38,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:18:38,281 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 17:18:38,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 17:18:38,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-14 17:18:38,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-14 17:18:38,331 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 17:18:38,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 17:18:38,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 17:18:38,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 17:18:38,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-14 17:18:38,332 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2024-10-14 17:18:38,332 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2024-10-14 17:18:38,332 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 17:18:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 17:18:38,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 17:18:38,335 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 17:18:38,454 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 17:18:38,456 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 17:18:38,622 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 17:18:38,622 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 17:18:38,648 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 17:18:38,648 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 17:18:38,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:18:38 BoogieIcfgContainer [2024-10-14 17:18:38,649 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 17:18:38,654 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 17:18:38,654 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 17:18:38,658 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 17:18:38,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:18:37" (1/3) ... [2024-10-14 17:18:38,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4288da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:18:38, skipping insertion in model container [2024-10-14 17:18:38,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:18:38" (2/3) ... [2024-10-14 17:18:38,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4288da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:18:38, skipping insertion in model container [2024-10-14 17:18:38,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:18:38" (3/3) ... [2024-10-14 17:18:38,661 INFO L112 eAbstractionObserver]: Analyzing ICFG thread-join-array-const-race-2.i [2024-10-14 17:18:38,679 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 17:18:38,679 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-14 17:18:38,679 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 17:18:38,735 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-14 17:18:38,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 77 transitions, 161 flow [2024-10-14 17:18:38,816 INFO L124 PetriNetUnfolderBase]: 5/112 cut-off events. [2024-10-14 17:18:38,817 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 17:18:38,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 112 events. 5/112 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 216 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2024-10-14 17:18:38,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 77 transitions, 161 flow [2024-10-14 17:18:38,827 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 77 transitions, 161 flow [2024-10-14 17:18:38,835 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:18:38,843 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;@794ca524, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:18:38,844 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-14 17:18:38,856 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 17:18:38,860 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2024-10-14 17:18:38,860 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 17:18:38,861 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:38,861 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] [2024-10-14 17:18:38,862 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2024-10-14 17:18:38,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:38,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1063124316, now seen corresponding path program 1 times [2024-10-14 17:18:38,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:38,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607365561] [2024-10-14 17:18:38,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:38,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:39,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:39,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:39,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607365561] [2024-10-14 17:18:39,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607365561] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:18:39,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:18:39,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 17:18:39,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935110686] [2024-10-14 17:18:39,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:18:39,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 17:18:39,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:39,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 17:18:39,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 17:18:39,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 77 [2024-10-14 17:18:39,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:39,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:39,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 77 [2024-10-14 17:18:39,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:39,366 INFO L124 PetriNetUnfolderBase]: 8/185 cut-off events. [2024-10-14 17:18:39,366 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 17:18:39,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 185 events. 8/185 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 577 event pairs, 0 based on Foata normal form. 5/170 useless extension candidates. Maximal degree in co-relation 155. Up to 17 conditions per place. [2024-10-14 17:18:39,371 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 10 selfloop transitions, 4 changer transitions 1/79 dead transitions. [2024-10-14 17:18:39,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 195 flow [2024-10-14 17:18:39,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 17:18:39,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 17:18:39,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 275 transitions. [2024-10-14 17:18:39,383 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8928571428571429 [2024-10-14 17:18:39,385 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 161 flow. Second operand 4 states and 275 transitions. [2024-10-14 17:18:39,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 195 flow [2024-10-14 17:18:39,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 195 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:18:39,396 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 169 flow [2024-10-14 17:18:39,398 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-10-14 17:18:39,403 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-10-14 17:18:39,406 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 169 flow [2024-10-14 17:18:39,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:39,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:39,407 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:18:39,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 17:18:39,407 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2024-10-14 17:18:39,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:39,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1998489104, now seen corresponding path program 1 times [2024-10-14 17:18:39,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:39,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929493896] [2024-10-14 17:18:39,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:39,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:40,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:40,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:40,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929493896] [2024-10-14 17:18:40,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929493896] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:18:40,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:18:40,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:18:40,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783236761] [2024-10-14 17:18:40,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:18:40,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:18:40,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:40,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:18:40,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:18:40,178 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 77 [2024-10-14 17:18:40,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 169 flow. Second operand has 6 states, 6 states have (on average 53.5) internal successors, (321), 6 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:40,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:40,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 77 [2024-10-14 17:18:40,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:40,289 INFO L124 PetriNetUnfolderBase]: 30/233 cut-off events. [2024-10-14 17:18:40,289 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-14 17:18:40,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 233 events. 30/233 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 945 event pairs, 4 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 273. Up to 62 conditions per place. [2024-10-14 17:18:40,292 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 25 selfloop transitions, 5 changer transitions 0/82 dead transitions. [2024-10-14 17:18:40,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 243 flow [2024-10-14 17:18:40,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:18:40,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:18:40,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 343 transitions. [2024-10-14 17:18:40,295 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7424242424242424 [2024-10-14 17:18:40,295 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 169 flow. Second operand 6 states and 343 transitions. [2024-10-14 17:18:40,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 82 transitions, 243 flow [2024-10-14 17:18:40,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 82 transitions, 235 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 17:18:40,298 INFO L231 Difference]: Finished difference. Result has 82 places, 74 transitions, 169 flow [2024-10-14 17:18:40,298 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=169, PETRI_PLACES=82, PETRI_TRANSITIONS=74} [2024-10-14 17:18:40,298 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 5 predicate places. [2024-10-14 17:18:40,299 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 74 transitions, 169 flow [2024-10-14 17:18:40,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.5) internal successors, (321), 6 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:40,299 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:40,299 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 17:18:40,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 17:18:40,299 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2024-10-14 17:18:40,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:40,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1957567684, now seen corresponding path program 1 times [2024-10-14 17:18:40,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:40,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931793882] [2024-10-14 17:18:40,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:40,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:40,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:40,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:40,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931793882] [2024-10-14 17:18:40,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931793882] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:18:40,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:18:40,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:18:40,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992096657] [2024-10-14 17:18:40,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:18:40,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:18:40,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:40,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:18:40,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:18:40,368 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 77 [2024-10-14 17:18:40,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:40,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:40,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 77 [2024-10-14 17:18:40,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:40,406 INFO L124 PetriNetUnfolderBase]: 6/141 cut-off events. [2024-10-14 17:18:40,407 INFO L125 PetriNetUnfolderBase]: For 4/10 co-relation queries the response was YES. [2024-10-14 17:18:40,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 141 events. 6/141 cut-off events. For 4/10 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 379 event pairs, 4 based on Foata normal form. 1/130 useless extension candidates. Maximal degree in co-relation 134. Up to 21 conditions per place. [2024-10-14 17:18:40,408 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 9 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2024-10-14 17:18:40,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 77 transitions, 201 flow [2024-10-14 17:18:40,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:18:40,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:18:40,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 209 transitions. [2024-10-14 17:18:40,410 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2024-10-14 17:18:40,410 INFO L175 Difference]: Start difference. First operand has 82 places, 74 transitions, 169 flow. Second operand 3 states and 209 transitions. [2024-10-14 17:18:40,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 77 transitions, 201 flow [2024-10-14 17:18:40,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 77 transitions, 191 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 17:18:40,412 INFO L231 Difference]: Finished difference. Result has 81 places, 77 transitions, 189 flow [2024-10-14 17:18:40,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=81, PETRI_TRANSITIONS=77} [2024-10-14 17:18:40,413 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-10-14 17:18:40,414 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 77 transitions, 189 flow [2024-10-14 17:18:40,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:40,414 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:40,414 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:18:40,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 17:18:40,415 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2024-10-14 17:18:40,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:40,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1947567396, now seen corresponding path program 1 times [2024-10-14 17:18:40,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:40,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603940312] [2024-10-14 17:18:40,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:40,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:40,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 17:18:40,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:40,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603940312] [2024-10-14 17:18:40,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603940312] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:18:40,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:18:40,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 17:18:40,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88353029] [2024-10-14 17:18:40,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:18:40,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 17:18:40,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:40,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 17:18:40,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 17:18:40,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 77 [2024-10-14 17:18:40,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 77 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 65.5) internal successors, (262), 4 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:40,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:40,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 77 [2024-10-14 17:18:40,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:40,570 INFO L124 PetriNetUnfolderBase]: 2/106 cut-off events. [2024-10-14 17:18:40,570 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-14 17:18:40,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 106 events. 2/106 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 154 event pairs, 0 based on Foata normal form. 3/104 useless extension candidates. Maximal degree in co-relation 82. Up to 7 conditions per place. [2024-10-14 17:18:40,573 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 9 selfloop transitions, 3 changer transitions 7/75 dead transitions. [2024-10-14 17:18:40,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 199 flow [2024-10-14 17:18:40,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 17:18:40,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 17:18:40,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 270 transitions. [2024-10-14 17:18:40,576 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8766233766233766 [2024-10-14 17:18:40,576 INFO L175 Difference]: Start difference. First operand has 81 places, 77 transitions, 189 flow. Second operand 4 states and 270 transitions. [2024-10-14 17:18:40,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 75 transitions, 199 flow [2024-10-14 17:18:40,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 187 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-14 17:18:40,579 INFO L231 Difference]: Finished difference. Result has 80 places, 66 transitions, 153 flow [2024-10-14 17:18:40,580 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2024-10-14 17:18:40,581 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2024-10-14 17:18:40,582 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 66 transitions, 153 flow [2024-10-14 17:18:40,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.5) internal successors, (262), 4 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:40,582 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:40,582 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] [2024-10-14 17:18:40,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 17:18:40,584 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2024-10-14 17:18:40,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:40,585 INFO L85 PathProgramCache]: Analyzing trace with hash -226547286, now seen corresponding path program 1 times [2024-10-14 17:18:40,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:40,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490141437] [2024-10-14 17:18:40,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:40,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:40,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:40,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:40,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490141437] [2024-10-14 17:18:40,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490141437] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:18:40,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994147533] [2024-10-14 17:18:40,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:40,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:18:40,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:18:40,721 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:18:40,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 17:18:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:40,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 17:18:40,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:18:40,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:40,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:18:41,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:41,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994147533] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:18:41,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:18:41,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-14 17:18:41,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908343288] [2024-10-14 17:18:41,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:18:41,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 17:18:41,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:41,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 17:18:41,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-10-14 17:18:41,231 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 77 [2024-10-14 17:18:41,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 66 transitions, 153 flow. Second operand has 13 states, 13 states have (on average 62.92307692307692) internal successors, (818), 13 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:41,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:41,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 77 [2024-10-14 17:18:41,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:41,287 INFO L124 PetriNetUnfolderBase]: 8/97 cut-off events. [2024-10-14 17:18:41,288 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 17:18:41,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 97 events. 8/97 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 166 event pairs, 0 based on Foata normal form. 3/98 useless extension candidates. Maximal degree in co-relation 130. Up to 10 conditions per place. [2024-10-14 17:18:41,289 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 12 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-10-14 17:18:41,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 152 flow [2024-10-14 17:18:41,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 17:18:41,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 17:18:41,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 445 transitions. [2024-10-14 17:18:41,291 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8256029684601113 [2024-10-14 17:18:41,291 INFO L175 Difference]: Start difference. First operand has 80 places, 66 transitions, 153 flow. Second operand 7 states and 445 transitions. [2024-10-14 17:18:41,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 152 flow [2024-10-14 17:18:41,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 149 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:18:41,293 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 111 flow [2024-10-14 17:18:41,293 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=111, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2024-10-14 17:18:41,294 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, -18 predicate places. [2024-10-14 17:18:41,294 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 111 flow [2024-10-14 17:18:41,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 62.92307692307692) internal successors, (818), 13 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:41,295 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:41,295 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2024-10-14 17:18:41,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 17:18:41,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:18:41,497 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2024-10-14 17:18:41,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:41,497 INFO L85 PathProgramCache]: Analyzing trace with hash 414146859, now seen corresponding path program 1 times [2024-10-14 17:18:41,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:41,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017394266] [2024-10-14 17:18:41,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:41,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:18:41,532 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 17:18:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:18:41,562 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 17:18:41,562 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 17:18:41,563 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-10-14 17:18:41,565 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 6 remaining) [2024-10-14 17:18:41,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 6 remaining) [2024-10-14 17:18:41,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 6 remaining) [2024-10-14 17:18:41,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 6 remaining) [2024-10-14 17:18:41,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 6 remaining) [2024-10-14 17:18:41,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 17:18:41,567 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-10-14 17:18:41,569 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 17:18:41,570 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-14 17:18:41,587 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-14 17:18:41,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 95 transitions, 206 flow [2024-10-14 17:18:41,611 INFO L124 PetriNetUnfolderBase]: 10/197 cut-off events. [2024-10-14 17:18:41,612 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-14 17:18:41,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 197 events. 10/197 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 453 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 114. Up to 8 conditions per place. [2024-10-14 17:18:41,613 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 95 transitions, 206 flow [2024-10-14 17:18:41,614 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 95 transitions, 206 flow [2024-10-14 17:18:41,615 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:18:41,616 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;@794ca524, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:18:41,616 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-14 17:18:41,619 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 17:18:41,620 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2024-10-14 17:18:41,620 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 17:18:41,620 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:41,620 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] [2024-10-14 17:18:41,620 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-14 17:18:41,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:41,620 INFO L85 PathProgramCache]: Analyzing trace with hash -2132165308, now seen corresponding path program 1 times [2024-10-14 17:18:41,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:41,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171489632] [2024-10-14 17:18:41,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:41,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:41,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:41,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:41,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171489632] [2024-10-14 17:18:41,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171489632] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:18:41,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:18:41,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 17:18:41,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286200422] [2024-10-14 17:18:41,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:18:41,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 17:18:41,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:41,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 17:18:41,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 17:18:41,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2024-10-14 17:18:41,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 95 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:41,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:41,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2024-10-14 17:18:41,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:41,812 INFO L124 PetriNetUnfolderBase]: 72/571 cut-off events. [2024-10-14 17:18:41,812 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-10-14 17:18:41,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 571 events. 72/571 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3318 event pairs, 35 based on Foata normal form. 16/538 useless extension candidates. Maximal degree in co-relation 336. Up to 106 conditions per place. [2024-10-14 17:18:41,817 INFO L140 encePairwiseOnDemand]: 88/95 looper letters, 18 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2024-10-14 17:18:41,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 100 transitions, 260 flow [2024-10-14 17:18:41,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 17:18:41,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 17:18:41,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 338 transitions. [2024-10-14 17:18:41,818 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8894736842105263 [2024-10-14 17:18:41,818 INFO L175 Difference]: Start difference. First operand has 96 places, 95 transitions, 206 flow. Second operand 4 states and 338 transitions. [2024-10-14 17:18:41,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 100 transitions, 260 flow [2024-10-14 17:18:41,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 100 transitions, 260 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:18:41,821 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 218 flow [2024-10-14 17:18:41,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2024-10-14 17:18:41,822 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 4 predicate places. [2024-10-14 17:18:41,822 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 218 flow [2024-10-14 17:18:41,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:41,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:41,823 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] [2024-10-14 17:18:41,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 17:18:41,823 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-14 17:18:41,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:41,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1678879695, now seen corresponding path program 1 times [2024-10-14 17:18:41,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:41,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53010921] [2024-10-14 17:18:41,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:41,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:42,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:42,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:42,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53010921] [2024-10-14 17:18:42,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53010921] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:18:42,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:18:42,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:18:42,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115848265] [2024-10-14 17:18:42,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:18:42,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:18:42,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:42,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:18:42,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:18:42,129 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 95 [2024-10-14 17:18:42,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 67.5) internal successors, (405), 6 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:42,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:42,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 95 [2024-10-14 17:18:42,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:42,264 INFO L124 PetriNetUnfolderBase]: 236/941 cut-off events. [2024-10-14 17:18:42,265 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-10-14 17:18:42,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 941 events. 236/941 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6505 event pairs, 91 based on Foata normal form. 0/875 useless extension candidates. Maximal degree in co-relation 443. Up to 313 conditions per place. [2024-10-14 17:18:42,271 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 38 selfloop transitions, 5 changer transitions 0/109 dead transitions. [2024-10-14 17:18:42,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 109 transitions, 334 flow [2024-10-14 17:18:42,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:18:42,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:18:42,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 439 transitions. [2024-10-14 17:18:42,273 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7701754385964912 [2024-10-14 17:18:42,273 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 218 flow. Second operand 6 states and 439 transitions. [2024-10-14 17:18:42,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 109 transitions, 334 flow [2024-10-14 17:18:42,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 109 transitions, 328 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:18:42,276 INFO L231 Difference]: Finished difference. Result has 102 places, 93 transitions, 220 flow [2024-10-14 17:18:42,276 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=102, PETRI_TRANSITIONS=93} [2024-10-14 17:18:42,277 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 6 predicate places. [2024-10-14 17:18:42,277 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 93 transitions, 220 flow [2024-10-14 17:18:42,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.5) internal successors, (405), 6 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:42,277 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:42,278 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 17:18:42,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 17:18:42,278 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-14 17:18:42,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:42,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1410162995, now seen corresponding path program 1 times [2024-10-14 17:18:42,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:42,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653154598] [2024-10-14 17:18:42,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:42,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:42,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:42,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:42,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653154598] [2024-10-14 17:18:42,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653154598] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:18:42,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:18:42,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:18:42,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069792288] [2024-10-14 17:18:42,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:18:42,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:18:42,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:42,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:18:42,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:18:42,322 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2024-10-14 17:18:42,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 93 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:42,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:42,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2024-10-14 17:18:42,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:42,409 INFO L124 PetriNetUnfolderBase]: 116/707 cut-off events. [2024-10-14 17:18:42,409 INFO L125 PetriNetUnfolderBase]: For 100/145 co-relation queries the response was YES. [2024-10-14 17:18:42,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1005 conditions, 707 events. 116/707 cut-off events. For 100/145 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4566 event pairs, 58 based on Foata normal form. 4/621 useless extension candidates. Maximal degree in co-relation 463. Up to 185 conditions per place. [2024-10-14 17:18:42,415 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 18 selfloop transitions, 5 changer transitions 0/101 dead transitions. [2024-10-14 17:18:42,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 101 transitions, 290 flow [2024-10-14 17:18:42,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:18:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:18:42,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2024-10-14 17:18:42,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9052631578947369 [2024-10-14 17:18:42,416 INFO L175 Difference]: Start difference. First operand has 102 places, 93 transitions, 220 flow. Second operand 3 states and 258 transitions. [2024-10-14 17:18:42,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 101 transitions, 290 flow [2024-10-14 17:18:42,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 101 transitions, 280 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 17:18:42,418 INFO L231 Difference]: Finished difference. Result has 101 places, 97 transitions, 248 flow [2024-10-14 17:18:42,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=101, PETRI_TRANSITIONS=97} [2024-10-14 17:18:42,420 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 5 predicate places. [2024-10-14 17:18:42,420 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 97 transitions, 248 flow [2024-10-14 17:18:42,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:42,420 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:42,421 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:18:42,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 17:18:42,421 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-14 17:18:42,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:42,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1750110091, now seen corresponding path program 1 times [2024-10-14 17:18:42,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:42,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588232588] [2024-10-14 17:18:42,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:42,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:42,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 17:18:42,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:42,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588232588] [2024-10-14 17:18:42,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588232588] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:18:42,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:18:42,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 17:18:42,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049397223] [2024-10-14 17:18:42,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:18:42,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 17:18:42,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:42,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 17:18:42,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 17:18:42,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2024-10-14 17:18:42,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 97 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:42,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:42,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2024-10-14 17:18:42,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:42,608 INFO L124 PetriNetUnfolderBase]: 63/580 cut-off events. [2024-10-14 17:18:42,608 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-10-14 17:18:42,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 810 conditions, 580 events. 63/580 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3221 event pairs, 24 based on Foata normal form. 15/544 useless extension candidates. Maximal degree in co-relation 632. Up to 72 conditions per place. [2024-10-14 17:18:42,612 INFO L140 encePairwiseOnDemand]: 90/95 looper letters, 19 selfloop transitions, 4 changer transitions 3/108 dead transitions. [2024-10-14 17:18:42,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 108 transitions, 328 flow [2024-10-14 17:18:42,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 17:18:42,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 17:18:42,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 339 transitions. [2024-10-14 17:18:42,613 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8921052631578947 [2024-10-14 17:18:42,613 INFO L175 Difference]: Start difference. First operand has 101 places, 97 transitions, 248 flow. Second operand 4 states and 339 transitions. [2024-10-14 17:18:42,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 108 transitions, 328 flow [2024-10-14 17:18:42,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 108 transitions, 318 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:18:42,617 INFO L231 Difference]: Finished difference. Result has 103 places, 98 transitions, 254 flow [2024-10-14 17:18:42,617 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=103, PETRI_TRANSITIONS=98} [2024-10-14 17:18:42,619 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 7 predicate places. [2024-10-14 17:18:42,619 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 98 transitions, 254 flow [2024-10-14 17:18:42,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:42,619 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:42,619 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] [2024-10-14 17:18:42,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 17:18:42,620 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-14 17:18:42,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:42,620 INFO L85 PathProgramCache]: Analyzing trace with hash -37645542, now seen corresponding path program 1 times [2024-10-14 17:18:42,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:42,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427909904] [2024-10-14 17:18:42,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:42,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:42,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:42,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:42,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427909904] [2024-10-14 17:18:42,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427909904] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:18:42,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347774908] [2024-10-14 17:18:42,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:42,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:18:42,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:18:42,723 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:18:42,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 17:18:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:42,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 17:18:42,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:18:42,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:42,901 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:18:42,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:42,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347774908] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:18:42,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:18:42,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-14 17:18:42,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038796669] [2024-10-14 17:18:42,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:18:42,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 17:18:42,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:42,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 17:18:42,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-10-14 17:18:43,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 95 [2024-10-14 17:18:43,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 98 transitions, 254 flow. Second operand has 13 states, 13 states have (on average 76.92307692307692) internal successors, (1000), 13 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:43,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:43,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 95 [2024-10-14 17:18:43,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:43,282 INFO L124 PetriNetUnfolderBase]: 81/421 cut-off events. [2024-10-14 17:18:43,282 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-10-14 17:18:43,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 421 events. 81/421 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2118 event pairs, 1 based on Foata normal form. 15/414 useless extension candidates. Maximal degree in co-relation 620. Up to 56 conditions per place. [2024-10-14 17:18:43,286 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 28 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2024-10-14 17:18:43,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 92 transitions, 290 flow [2024-10-14 17:18:43,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 17:18:43,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 17:18:43,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 788 transitions. [2024-10-14 17:18:43,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8294736842105264 [2024-10-14 17:18:43,290 INFO L175 Difference]: Start difference. First operand has 103 places, 98 transitions, 254 flow. Second operand 10 states and 788 transitions. [2024-10-14 17:18:43,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 92 transitions, 290 flow [2024-10-14 17:18:43,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 92 transitions, 289 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 17:18:43,293 INFO L231 Difference]: Finished difference. Result has 86 places, 72 transitions, 193 flow [2024-10-14 17:18:43,294 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=193, PETRI_PLACES=86, PETRI_TRANSITIONS=72} [2024-10-14 17:18:43,294 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, -10 predicate places. [2024-10-14 17:18:43,295 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 193 flow [2024-10-14 17:18:43,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 76.92307692307692) internal successors, (1000), 13 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:43,295 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:43,296 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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 17:18:43,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 17:18:43,497 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,SelfDestructingSolverStorable10 [2024-10-14 17:18:43,498 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-14 17:18:43,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:43,499 INFO L85 PathProgramCache]: Analyzing trace with hash -678681733, now seen corresponding path program 1 times [2024-10-14 17:18:43,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:43,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497819068] [2024-10-14 17:18:43,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:43,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:43,542 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-14 17:18:43,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:43,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497819068] [2024-10-14 17:18:43,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497819068] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:18:43,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:18:43,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:18:43,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084697815] [2024-10-14 17:18:43,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:18:43,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:18:43,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:43,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:18:43,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:18:43,556 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2024-10-14 17:18:43,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 72 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:43,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:43,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2024-10-14 17:18:43,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:43,616 INFO L124 PetriNetUnfolderBase]: 27/229 cut-off events. [2024-10-14 17:18:43,616 INFO L125 PetriNetUnfolderBase]: For 27/31 co-relation queries the response was YES. [2024-10-14 17:18:43,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 229 events. 27/229 cut-off events. For 27/31 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 824 event pairs, 16 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 360. Up to 55 conditions per place. [2024-10-14 17:18:43,617 INFO L140 encePairwiseOnDemand]: 90/95 looper letters, 13 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-10-14 17:18:43,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 77 transitions, 241 flow [2024-10-14 17:18:43,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:18:43,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:18:43,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 252 transitions. [2024-10-14 17:18:43,619 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8842105263157894 [2024-10-14 17:18:43,619 INFO L175 Difference]: Start difference. First operand has 86 places, 72 transitions, 193 flow. Second operand 3 states and 252 transitions. [2024-10-14 17:18:43,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 77 transitions, 241 flow [2024-10-14 17:18:43,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 77 transitions, 224 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-10-14 17:18:43,621 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 212 flow [2024-10-14 17:18:43,621 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2024-10-14 17:18:43,621 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, -12 predicate places. [2024-10-14 17:18:43,622 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 212 flow [2024-10-14 17:18:43,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:43,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:43,622 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:18:43,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 17:18:43,622 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-14 17:18:43,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:43,623 INFO L85 PathProgramCache]: Analyzing trace with hash 282277986, now seen corresponding path program 1 times [2024-10-14 17:18:43,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:43,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739300882] [2024-10-14 17:18:43,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:43,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:18:43,640 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 17:18:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:18:43,655 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 17:18:43,655 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 17:18:43,655 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-10-14 17:18:43,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2024-10-14 17:18:43,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2024-10-14 17:18:43,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2024-10-14 17:18:43,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2024-10-14 17:18:43,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2024-10-14 17:18:43,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2024-10-14 17:18:43,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 17:18:43,656 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:18:43,657 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 17:18:43,657 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-14 17:18:43,673 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-14 17:18:43,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 113 transitions, 253 flow [2024-10-14 17:18:43,701 INFO L124 PetriNetUnfolderBase]: 20/331 cut-off events. [2024-10-14 17:18:43,701 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-14 17:18:43,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 331 events. 20/331 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 928 event pairs, 1 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 205. Up to 16 conditions per place. [2024-10-14 17:18:43,702 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 113 transitions, 253 flow [2024-10-14 17:18:43,704 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 113 transitions, 253 flow [2024-10-14 17:18:43,705 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:18:43,705 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;@794ca524, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:18:43,705 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-14 17:18:43,707 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 17:18:43,707 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2024-10-14 17:18:43,707 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 17:18:43,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:43,708 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] [2024-10-14 17:18:43,708 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-14 17:18:43,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:43,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1840619684, now seen corresponding path program 1 times [2024-10-14 17:18:43,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:43,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598424979] [2024-10-14 17:18:43,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:43,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:43,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:43,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:43,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598424979] [2024-10-14 17:18:43,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598424979] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:18:43,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:18:43,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 17:18:43,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53446281] [2024-10-14 17:18:43,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:18:43,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 17:18:43,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:43,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 17:18:43,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 17:18:43,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2024-10-14 17:18:43,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 113 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:43,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:43,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2024-10-14 17:18:43,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:44,078 INFO L124 PetriNetUnfolderBase]: 413/2179 cut-off events. [2024-10-14 17:18:44,078 INFO L125 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2024-10-14 17:18:44,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2953 conditions, 2179 events. 413/2179 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 17472 event pairs, 232 based on Foata normal form. 70/2062 useless extension candidates. Maximal degree in co-relation 1327. Up to 496 conditions per place. [2024-10-14 17:18:44,092 INFO L140 encePairwiseOnDemand]: 106/113 looper letters, 24 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2024-10-14 17:18:44,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 120 transitions, 323 flow [2024-10-14 17:18:44,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 17:18:44,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 17:18:44,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 400 transitions. [2024-10-14 17:18:44,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8849557522123894 [2024-10-14 17:18:44,094 INFO L175 Difference]: Start difference. First operand has 115 places, 113 transitions, 253 flow. Second operand 4 states and 400 transitions. [2024-10-14 17:18:44,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 120 transitions, 323 flow [2024-10-14 17:18:44,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 120 transitions, 323 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:18:44,097 INFO L231 Difference]: Finished difference. Result has 119 places, 112 transitions, 265 flow [2024-10-14 17:18:44,097 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=265, PETRI_PLACES=119, PETRI_TRANSITIONS=112} [2024-10-14 17:18:44,098 INFO L277 CegarLoopForPetriNet]: 115 programPoint places, 4 predicate places. [2024-10-14 17:18:44,098 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 112 transitions, 265 flow [2024-10-14 17:18:44,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:44,098 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:44,099 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] [2024-10-14 17:18:44,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 17:18:44,099 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-14 17:18:44,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:44,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1497087296, now seen corresponding path program 1 times [2024-10-14 17:18:44,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:44,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173931023] [2024-10-14 17:18:44,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:44,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:44,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:44,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:44,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173931023] [2024-10-14 17:18:44,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173931023] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:18:44,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:18:44,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:18:44,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918292645] [2024-10-14 17:18:44,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:18:44,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:18:44,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:44,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:18:44,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:18:44,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 113 [2024-10-14 17:18:44,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 112 transitions, 265 flow. Second operand has 6 states, 6 states have (on average 81.5) internal successors, (489), 6 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:44,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:44,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 113 [2024-10-14 17:18:44,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:44,896 INFO L124 PetriNetUnfolderBase]: 1292/3917 cut-off events. [2024-10-14 17:18:44,897 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-10-14 17:18:44,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6266 conditions, 3917 events. 1292/3917 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 34357 event pairs, 412 based on Foata normal form. 0/3662 useless extension candidates. Maximal degree in co-relation 2056. Up to 1483 conditions per place. [2024-10-14 17:18:44,930 INFO L140 encePairwiseOnDemand]: 107/113 looper letters, 50 selfloop transitions, 5 changer transitions 0/135 dead transitions. [2024-10-14 17:18:44,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 135 transitions, 421 flow [2024-10-14 17:18:44,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:18:44,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:18:44,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 535 transitions. [2024-10-14 17:18:44,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7890855457227138 [2024-10-14 17:18:44,933 INFO L175 Difference]: Start difference. First operand has 119 places, 112 transitions, 265 flow. Second operand 6 states and 535 transitions. [2024-10-14 17:18:44,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 135 transitions, 421 flow [2024-10-14 17:18:44,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 135 transitions, 415 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:18:44,971 INFO L231 Difference]: Finished difference. Result has 121 places, 111 transitions, 267 flow [2024-10-14 17:18:44,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=121, PETRI_TRANSITIONS=111} [2024-10-14 17:18:44,972 INFO L277 CegarLoopForPetriNet]: 115 programPoint places, 6 predicate places. [2024-10-14 17:18:44,972 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 111 transitions, 267 flow [2024-10-14 17:18:44,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.5) internal successors, (489), 6 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:44,972 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:44,973 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 17:18:44,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 17:18:44,973 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-14 17:18:44,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:44,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1823324052, now seen corresponding path program 1 times [2024-10-14 17:18:44,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:44,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029048248] [2024-10-14 17:18:44,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:44,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:45,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:45,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:45,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029048248] [2024-10-14 17:18:45,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029048248] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:18:45,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:18:45,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:18:45,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316880112] [2024-10-14 17:18:45,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:18:45,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:18:45,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:45,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:18:45,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:18:45,024 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 113 [2024-10-14 17:18:45,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 111 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:45,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:45,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 113 [2024-10-14 17:18:45,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:45,534 INFO L124 PetriNetUnfolderBase]: 1023/4159 cut-off events. [2024-10-14 17:18:45,534 INFO L125 PetriNetUnfolderBase]: For 676/938 co-relation queries the response was YES. [2024-10-14 17:18:45,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6131 conditions, 4159 events. 1023/4159 cut-off events. For 676/938 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 39795 event pairs, 581 based on Foata normal form. 7/3617 useless extension candidates. Maximal degree in co-relation 2112. Up to 1329 conditions per place. [2024-10-14 17:18:45,566 INFO L140 encePairwiseOnDemand]: 106/113 looper letters, 27 selfloop transitions, 6 changer transitions 0/124 dead transitions. [2024-10-14 17:18:45,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 124 transitions, 377 flow [2024-10-14 17:18:45,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:18:45,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:18:45,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2024-10-14 17:18:45,568 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9056047197640118 [2024-10-14 17:18:45,568 INFO L175 Difference]: Start difference. First operand has 121 places, 111 transitions, 267 flow. Second operand 3 states and 307 transitions. [2024-10-14 17:18:45,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 124 transitions, 377 flow [2024-10-14 17:18:45,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 124 transitions, 367 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 17:18:45,571 INFO L231 Difference]: Finished difference. Result has 120 places, 116 transitions, 303 flow [2024-10-14 17:18:45,571 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=303, PETRI_PLACES=120, PETRI_TRANSITIONS=116} [2024-10-14 17:18:45,572 INFO L277 CegarLoopForPetriNet]: 115 programPoint places, 5 predicate places. [2024-10-14 17:18:45,572 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 116 transitions, 303 flow [2024-10-14 17:18:45,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:45,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:45,572 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:18:45,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 17:18:45,573 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-14 17:18:45,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:45,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1406205556, now seen corresponding path program 1 times [2024-10-14 17:18:45,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:45,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083638961] [2024-10-14 17:18:45,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:45,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:45,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 17:18:45,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:45,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083638961] [2024-10-14 17:18:45,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083638961] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:18:45,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:18:45,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 17:18:45,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189616784] [2024-10-14 17:18:45,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:18:45,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 17:18:45,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:45,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 17:18:45,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 17:18:45,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2024-10-14 17:18:45,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 116 transitions, 303 flow. Second operand has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:45,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:45,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2024-10-14 17:18:45,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:46,088 INFO L124 PetriNetUnfolderBase]: 662/3141 cut-off events. [2024-10-14 17:18:46,088 INFO L125 PetriNetUnfolderBase]: For 430/450 co-relation queries the response was YES. [2024-10-14 17:18:46,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4682 conditions, 3141 events. 662/3141 cut-off events. For 430/450 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 28237 event pairs, 320 based on Foata normal form. 63/2852 useless extension candidates. Maximal degree in co-relation 3788. Up to 540 conditions per place. [2024-10-14 17:18:46,115 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 31 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2024-10-14 17:18:46,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 132 transitions, 414 flow [2024-10-14 17:18:46,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 17:18:46,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 17:18:46,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 404 transitions. [2024-10-14 17:18:46,117 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8938053097345132 [2024-10-14 17:18:46,117 INFO L175 Difference]: Start difference. First operand has 120 places, 116 transitions, 303 flow. Second operand 4 states and 404 transitions. [2024-10-14 17:18:46,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 132 transitions, 414 flow [2024-10-14 17:18:46,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 132 transitions, 402 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:18:46,121 INFO L231 Difference]: Finished difference. Result has 122 places, 117 transitions, 307 flow [2024-10-14 17:18:46,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=122, PETRI_TRANSITIONS=117} [2024-10-14 17:18:46,123 INFO L277 CegarLoopForPetriNet]: 115 programPoint places, 7 predicate places. [2024-10-14 17:18:46,123 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 117 transitions, 307 flow [2024-10-14 17:18:46,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:46,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:46,124 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] [2024-10-14 17:18:46,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-14 17:18:46,124 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-14 17:18:46,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:46,125 INFO L85 PathProgramCache]: Analyzing trace with hash -117961782, now seen corresponding path program 1 times [2024-10-14 17:18:46,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:46,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102173904] [2024-10-14 17:18:46,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:46,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:46,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:46,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:46,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102173904] [2024-10-14 17:18:46,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102173904] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:18:46,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767947246] [2024-10-14 17:18:46,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:46,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:18:46,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:18:46,232 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:18:46,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 17:18:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:46,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 17:18:46,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:18:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:46,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:18:46,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:46,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767947246] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:18:46,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:18:46,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-14 17:18:46,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221220499] [2024-10-14 17:18:46,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:18:46,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 17:18:46,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:46,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 17:18:46,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-10-14 17:18:46,678 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 113 [2024-10-14 17:18:46,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 117 transitions, 307 flow. Second operand has 13 states, 13 states have (on average 90.92307692307692) internal successors, (1182), 13 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:46,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:46,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 113 [2024-10-14 17:18:46,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:47,276 INFO L124 PetriNetUnfolderBase]: 1016/4568 cut-off events. [2024-10-14 17:18:47,276 INFO L125 PetriNetUnfolderBase]: For 586/586 co-relation queries the response was YES. [2024-10-14 17:18:47,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6839 conditions, 4568 events. 1016/4568 cut-off events. For 586/586 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 43742 event pairs, 156 based on Foata normal form. 15/4027 useless extension candidates. Maximal degree in co-relation 3793. Up to 749 conditions per place. [2024-10-14 17:18:47,308 INFO L140 encePairwiseOnDemand]: 105/113 looper letters, 50 selfloop transitions, 11 changer transitions 0/155 dead transitions. [2024-10-14 17:18:47,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 155 transitions, 507 flow [2024-10-14 17:18:47,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 17:18:47,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 17:18:47,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 953 transitions. [2024-10-14 17:18:47,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8433628318584071 [2024-10-14 17:18:47,311 INFO L175 Difference]: Start difference. First operand has 122 places, 117 transitions, 307 flow. Second operand 10 states and 953 transitions. [2024-10-14 17:18:47,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 155 transitions, 507 flow [2024-10-14 17:18:47,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 155 transitions, 501 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:18:47,316 INFO L231 Difference]: Finished difference. Result has 132 places, 123 transitions, 357 flow [2024-10-14 17:18:47,317 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=357, PETRI_PLACES=132, PETRI_TRANSITIONS=123} [2024-10-14 17:18:47,317 INFO L277 CegarLoopForPetriNet]: 115 programPoint places, 17 predicate places. [2024-10-14 17:18:47,317 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 123 transitions, 357 flow [2024-10-14 17:18:47,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 90.92307692307692) internal successors, (1182), 13 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:47,318 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:47,318 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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 17:18:47,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 17:18:47,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-14 17:18:47,519 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-14 17:18:47,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:47,520 INFO L85 PathProgramCache]: Analyzing trace with hash -557545285, now seen corresponding path program 1 times [2024-10-14 17:18:47,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:47,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451999497] [2024-10-14 17:18:47,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:47,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:47,556 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-14 17:18:47,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:47,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451999497] [2024-10-14 17:18:47,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451999497] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:18:47,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:18:47,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:18:47,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241702876] [2024-10-14 17:18:47,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:18:47,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:18:47,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:47,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:18:47,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:18:47,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 113 [2024-10-14 17:18:47,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 123 transitions, 357 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:47,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:47,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 113 [2024-10-14 17:18:47,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:47,997 INFO L124 PetriNetUnfolderBase]: 916/3884 cut-off events. [2024-10-14 17:18:47,998 INFO L125 PetriNetUnfolderBase]: For 1212/1375 co-relation queries the response was YES. [2024-10-14 17:18:48,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6672 conditions, 3884 events. 916/3884 cut-off events. For 1212/1375 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 36926 event pairs, 539 based on Foata normal form. 4/3502 useless extension candidates. Maximal degree in co-relation 6001. Up to 1192 conditions per place. [2024-10-14 17:18:48,031 INFO L140 encePairwiseOnDemand]: 106/113 looper letters, 28 selfloop transitions, 9 changer transitions 0/137 dead transitions. [2024-10-14 17:18:48,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 137 transitions, 482 flow [2024-10-14 17:18:48,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:18:48,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:18:48,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2024-10-14 17:18:48,034 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9026548672566371 [2024-10-14 17:18:48,034 INFO L175 Difference]: Start difference. First operand has 132 places, 123 transitions, 357 flow. Second operand 3 states and 306 transitions. [2024-10-14 17:18:48,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 137 transitions, 482 flow [2024-10-14 17:18:48,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 137 transitions, 474 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-14 17:18:48,042 INFO L231 Difference]: Finished difference. Result has 134 places, 130 transitions, 425 flow [2024-10-14 17:18:48,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=425, PETRI_PLACES=134, PETRI_TRANSITIONS=130} [2024-10-14 17:18:48,043 INFO L277 CegarLoopForPetriNet]: 115 programPoint places, 19 predicate places. [2024-10-14 17:18:48,043 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 130 transitions, 425 flow [2024-10-14 17:18:48,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:48,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:48,044 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2024-10-14 17:18:48,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-14 17:18:48,044 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-14 17:18:48,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:48,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1054548099, now seen corresponding path program 1 times [2024-10-14 17:18:48,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:48,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732255027] [2024-10-14 17:18:48,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:48,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:48,116 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-14 17:18:48,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:48,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732255027] [2024-10-14 17:18:48,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732255027] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:18:48,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:18:48,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:18:48,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719055988] [2024-10-14 17:18:48,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:18:48,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:18:48,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:48,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:18:48,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:18:48,127 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 113 [2024-10-14 17:18:48,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 130 transitions, 425 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:48,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:48,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 113 [2024-10-14 17:18:48,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:48,272 INFO L124 PetriNetUnfolderBase]: 98/1329 cut-off events. [2024-10-14 17:18:48,272 INFO L125 PetriNetUnfolderBase]: For 334/378 co-relation queries the response was YES. [2024-10-14 17:18:48,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1999 conditions, 1329 events. 98/1329 cut-off events. For 334/378 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 9813 event pairs, 26 based on Foata normal form. 20/1238 useless extension candidates. Maximal degree in co-relation 896. Up to 101 conditions per place. [2024-10-14 17:18:48,278 INFO L140 encePairwiseOnDemand]: 107/113 looper letters, 12 selfloop transitions, 6 changer transitions 0/129 dead transitions. [2024-10-14 17:18:48,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 129 transitions, 446 flow [2024-10-14 17:18:48,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:18:48,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:18:48,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2024-10-14 17:18:48,280 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9292035398230089 [2024-10-14 17:18:48,280 INFO L175 Difference]: Start difference. First operand has 134 places, 130 transitions, 425 flow. Second operand 3 states and 315 transitions. [2024-10-14 17:18:48,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 129 transitions, 446 flow [2024-10-14 17:18:48,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 129 transitions, 434 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-14 17:18:48,285 INFO L231 Difference]: Finished difference. Result has 134 places, 124 transitions, 379 flow [2024-10-14 17:18:48,285 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=379, PETRI_PLACES=134, PETRI_TRANSITIONS=124} [2024-10-14 17:18:48,285 INFO L277 CegarLoopForPetriNet]: 115 programPoint places, 19 predicate places. [2024-10-14 17:18:48,286 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 124 transitions, 379 flow [2024-10-14 17:18:48,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:48,286 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:48,286 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2024-10-14 17:18:48,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-14 17:18:48,287 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-14 17:18:48,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:48,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2110657165, now seen corresponding path program 1 times [2024-10-14 17:18:48,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:48,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948983565] [2024-10-14 17:18:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:48,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-14 17:18:48,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:48,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948983565] [2024-10-14 17:18:48,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948983565] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:18:48,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:18:48,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:18:48,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662522837] [2024-10-14 17:18:48,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:18:48,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:18:48,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:48,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:18:48,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:18:48,339 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 113 [2024-10-14 17:18:48,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 124 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:48,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:48,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 113 [2024-10-14 17:18:48,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:48,492 INFO L124 PetriNetUnfolderBase]: 177/1401 cut-off events. [2024-10-14 17:18:48,492 INFO L125 PetriNetUnfolderBase]: For 698/746 co-relation queries the response was YES. [2024-10-14 17:18:48,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2462 conditions, 1401 events. 177/1401 cut-off events. For 698/746 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 10818 event pairs, 135 based on Foata normal form. 3/1290 useless extension candidates. Maximal degree in co-relation 2143. Up to 336 conditions per place. [2024-10-14 17:18:48,500 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 23 selfloop transitions, 4 changer transitions 0/129 dead transitions. [2024-10-14 17:18:48,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 129 transitions, 453 flow [2024-10-14 17:18:48,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:18:48,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:18:48,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2024-10-14 17:18:48,502 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8820058997050148 [2024-10-14 17:18:48,502 INFO L175 Difference]: Start difference. First operand has 134 places, 124 transitions, 379 flow. Second operand 3 states and 299 transitions. [2024-10-14 17:18:48,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 129 transitions, 453 flow [2024-10-14 17:18:48,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 129 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 17:18:48,506 INFO L231 Difference]: Finished difference. Result has 137 places, 127 transitions, 407 flow [2024-10-14 17:18:48,506 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=407, PETRI_PLACES=137, PETRI_TRANSITIONS=127} [2024-10-14 17:18:48,506 INFO L277 CegarLoopForPetriNet]: 115 programPoint places, 22 predicate places. [2024-10-14 17:18:48,507 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 127 transitions, 407 flow [2024-10-14 17:18:48,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:48,507 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:48,507 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-10-14 17:18:48,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-14 17:18:48,508 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-14 17:18:48,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:48,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1663829781, now seen corresponding path program 1 times [2024-10-14 17:18:48,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:48,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142201844] [2024-10-14 17:18:48,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:48,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:48,669 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:48,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:48,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142201844] [2024-10-14 17:18:48,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142201844] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:18:48,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103788815] [2024-10-14 17:18:48,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:48,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:18:48,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:18:48,672 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:18:48,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 17:18:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:48,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 17:18:48,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:18:49,002 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:49,002 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:18:49,130 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:49,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103788815] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:18:49,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:18:49,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-10-14 17:18:49,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472304722] [2024-10-14 17:18:49,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:18:49,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-14 17:18:49,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:49,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-14 17:18:49,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-10-14 17:18:49,355 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 113 [2024-10-14 17:18:49,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 127 transitions, 407 flow. Second operand has 19 states, 19 states have (on average 91.21052631578948) internal successors, (1733), 19 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:49,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:49,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 113 [2024-10-14 17:18:49,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:49,587 INFO L124 PetriNetUnfolderBase]: 151/828 cut-off events. [2024-10-14 17:18:49,587 INFO L125 PetriNetUnfolderBase]: For 338/338 co-relation queries the response was YES. [2024-10-14 17:18:49,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1520 conditions, 828 events. 151/828 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4892 event pairs, 6 based on Foata normal form. 20/829 useless extension candidates. Maximal degree in co-relation 1505. Up to 88 conditions per place. [2024-10-14 17:18:49,592 INFO L140 encePairwiseOnDemand]: 107/113 looper letters, 50 selfloop transitions, 11 changer transitions 0/125 dead transitions. [2024-10-14 17:18:49,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 125 transitions, 502 flow [2024-10-14 17:18:49,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 17:18:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-14 17:18:49,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1219 transitions. [2024-10-14 17:18:49,595 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8298162014976175 [2024-10-14 17:18:49,595 INFO L175 Difference]: Start difference. First operand has 137 places, 127 transitions, 407 flow. Second operand 13 states and 1219 transitions. [2024-10-14 17:18:49,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 125 transitions, 502 flow [2024-10-14 17:18:49,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 125 transitions, 463 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-10-14 17:18:49,599 INFO L231 Difference]: Finished difference. Result has 110 places, 87 transitions, 247 flow [2024-10-14 17:18:49,599 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=247, PETRI_PLACES=110, PETRI_TRANSITIONS=87} [2024-10-14 17:18:49,599 INFO L277 CegarLoopForPetriNet]: 115 programPoint places, -5 predicate places. [2024-10-14 17:18:49,599 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 87 transitions, 247 flow [2024-10-14 17:18:49,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.21052631578948) internal successors, (1733), 19 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:49,601 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:49,602 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-10-14 17:18:49,620 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 17:18:49,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:18:49,806 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-14 17:18:49,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:49,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1191937286, now seen corresponding path program 1 times [2024-10-14 17:18:49,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:49,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727849754] [2024-10-14 17:18:49,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:49,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:18:49,835 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 17:18:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:18:49,870 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 17:18:49,871 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 17:18:49,871 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-10-14 17:18:49,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2024-10-14 17:18:49,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2024-10-14 17:18:49,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2024-10-14 17:18:49,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2024-10-14 17:18:49,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2024-10-14 17:18:49,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2024-10-14 17:18:49,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2024-10-14 17:18:49,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-14 17:18:49,873 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:18:49,873 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 17:18:49,874 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-14 17:18:49,892 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-14 17:18:49,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 131 transitions, 302 flow [2024-10-14 17:18:49,940 INFO L124 PetriNetUnfolderBase]: 42/565 cut-off events. [2024-10-14 17:18:49,940 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-10-14 17:18:49,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 565 events. 42/565 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2066 event pairs, 6 based on Foata normal form. 0/482 useless extension candidates. Maximal degree in co-relation 351. Up to 32 conditions per place. [2024-10-14 17:18:49,943 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 131 transitions, 302 flow [2024-10-14 17:18:49,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 131 transitions, 302 flow [2024-10-14 17:18:49,945 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:18:49,946 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;@794ca524, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:18:49,946 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-14 17:18:49,948 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 17:18:49,948 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2024-10-14 17:18:49,948 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 17:18:49,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:49,948 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] [2024-10-14 17:18:49,948 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-14 17:18:49,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:49,948 INFO L85 PathProgramCache]: Analyzing trace with hash -2029671228, now seen corresponding path program 1 times [2024-10-14 17:18:49,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:49,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192101423] [2024-10-14 17:18:49,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:49,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:49,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:49,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:49,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192101423] [2024-10-14 17:18:49,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192101423] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:18:49,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:18:49,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 17:18:49,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937092617] [2024-10-14 17:18:49,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:18:49,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 17:18:49,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:49,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 17:18:49,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 17:18:50,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 131 [2024-10-14 17:18:50,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 131 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:50,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:50,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 131 [2024-10-14 17:18:50,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:50,932 INFO L124 PetriNetUnfolderBase]: 2017/8193 cut-off events. [2024-10-14 17:18:50,932 INFO L125 PetriNetUnfolderBase]: For 1213/1213 co-relation queries the response was YES. [2024-10-14 17:18:50,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11594 conditions, 8193 events. 2017/8193 cut-off events. For 1213/1213 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 83706 event pairs, 1191 based on Foata normal form. 286/7767 useless extension candidates. Maximal degree in co-relation 5267. Up to 2119 conditions per place. [2024-10-14 17:18:50,995 INFO L140 encePairwiseOnDemand]: 124/131 looper letters, 30 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2024-10-14 17:18:50,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 140 transitions, 388 flow [2024-10-14 17:18:50,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 17:18:50,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 17:18:50,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 462 transitions. [2024-10-14 17:18:50,998 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8816793893129771 [2024-10-14 17:18:50,998 INFO L175 Difference]: Start difference. First operand has 134 places, 131 transitions, 302 flow. Second operand 4 states and 462 transitions. [2024-10-14 17:18:50,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 140 transitions, 388 flow [2024-10-14 17:18:51,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 140 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:18:51,002 INFO L231 Difference]: Finished difference. Result has 138 places, 130 transitions, 314 flow [2024-10-14 17:18:51,002 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=314, PETRI_PLACES=138, PETRI_TRANSITIONS=130} [2024-10-14 17:18:51,003 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 4 predicate places. [2024-10-14 17:18:51,003 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 130 transitions, 314 flow [2024-10-14 17:18:51,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:51,003 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:51,003 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] [2024-10-14 17:18:51,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-14 17:18:51,004 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-14 17:18:51,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:51,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1358511811, now seen corresponding path program 1 times [2024-10-14 17:18:51,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:51,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023345951] [2024-10-14 17:18:51,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:51,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:51,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:51,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:51,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023345951] [2024-10-14 17:18:51,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023345951] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:18:51,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:18:51,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:18:51,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619807283] [2024-10-14 17:18:51,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:18:51,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:18:51,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:51,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:18:51,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:18:51,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 131 [2024-10-14 17:18:51,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 130 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 95.5) internal successors, (573), 6 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:51,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:51,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 131 [2024-10-14 17:18:51,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:52,994 INFO L124 PetriNetUnfolderBase]: 6248/15570 cut-off events. [2024-10-14 17:18:52,994 INFO L125 PetriNetUnfolderBase]: For 1593/1593 co-relation queries the response was YES. [2024-10-14 17:18:53,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25646 conditions, 15570 events. 6248/15570 cut-off events. For 1593/1593 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 158157 event pairs, 808 based on Foata normal form. 0/14524 useless extension candidates. Maximal degree in co-relation 23371. Up to 6781 conditions per place. [2024-10-14 17:18:53,082 INFO L140 encePairwiseOnDemand]: 125/131 looper letters, 62 selfloop transitions, 5 changer transitions 0/161 dead transitions. [2024-10-14 17:18:53,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 161 transitions, 510 flow [2024-10-14 17:18:53,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:18:53,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:18:53,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 631 transitions. [2024-10-14 17:18:53,085 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8027989821882952 [2024-10-14 17:18:53,085 INFO L175 Difference]: Start difference. First operand has 138 places, 130 transitions, 314 flow. Second operand 6 states and 631 transitions. [2024-10-14 17:18:53,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 161 transitions, 510 flow [2024-10-14 17:18:53,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 161 transitions, 504 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:18:53,103 INFO L231 Difference]: Finished difference. Result has 140 places, 129 transitions, 316 flow [2024-10-14 17:18:53,104 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=316, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2024-10-14 17:18:53,104 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 6 predicate places. [2024-10-14 17:18:53,104 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 316 flow [2024-10-14 17:18:53,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.5) internal successors, (573), 6 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:53,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:53,105 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 17:18:53,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-14 17:18:53,105 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-14 17:18:53,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:53,105 INFO L85 PathProgramCache]: Analyzing trace with hash -573880425, now seen corresponding path program 1 times [2024-10-14 17:18:53,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:53,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298517960] [2024-10-14 17:18:53,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:53,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:53,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:53,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:53,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298517960] [2024-10-14 17:18:53,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298517960] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:18:53,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:18:53,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:18:53,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834977281] [2024-10-14 17:18:53,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:18:53,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:18:53,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:53,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:18:53,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:18:53,257 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2024-10-14 17:18:53,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:53,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:53,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2024-10-14 17:18:53,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:55,736 INFO L124 PetriNetUnfolderBase]: 7160/22223 cut-off events. [2024-10-14 17:18:55,736 INFO L125 PetriNetUnfolderBase]: For 4858/5372 co-relation queries the response was YES. [2024-10-14 17:18:55,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34212 conditions, 22223 events. 7160/22223 cut-off events. For 4858/5372 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 266140 event pairs, 5035 based on Foata normal form. 10/19775 useless extension candidates. Maximal degree in co-relation 27383. Up to 8447 conditions per place. [2024-10-14 17:18:55,916 INFO L140 encePairwiseOnDemand]: 123/131 looper letters, 36 selfloop transitions, 7 changer transitions 0/147 dead transitions. [2024-10-14 17:18:55,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 147 transitions, 468 flow [2024-10-14 17:18:55,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:18:55,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:18:55,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2024-10-14 17:18:55,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.905852417302799 [2024-10-14 17:18:55,918 INFO L175 Difference]: Start difference. First operand has 140 places, 129 transitions, 316 flow. Second operand 3 states and 356 transitions. [2024-10-14 17:18:55,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 147 transitions, 468 flow [2024-10-14 17:18:55,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 147 transitions, 458 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 17:18:55,925 INFO L231 Difference]: Finished difference. Result has 139 places, 135 transitions, 360 flow [2024-10-14 17:18:55,925 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=360, PETRI_PLACES=139, PETRI_TRANSITIONS=135} [2024-10-14 17:18:55,925 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 5 predicate places. [2024-10-14 17:18:55,925 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 135 transitions, 360 flow [2024-10-14 17:18:55,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:55,926 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:55,926 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:18:55,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-14 17:18:55,926 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-14 17:18:55,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:55,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1468387551, now seen corresponding path program 1 times [2024-10-14 17:18:55,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:55,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371716003] [2024-10-14 17:18:55,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:55,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:55,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:55,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 17:18:55,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:55,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371716003] [2024-10-14 17:18:55,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371716003] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:18:55,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:18:55,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 17:18:55,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347556419] [2024-10-14 17:18:55,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:18:55,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 17:18:55,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:55,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 17:18:55,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 17:18:56,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 131 [2024-10-14 17:18:56,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 135 transitions, 360 flow. Second operand has 4 states, 4 states have (on average 107.5) internal successors, (430), 4 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:56,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:56,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 131 [2024-10-14 17:18:56,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:18:58,031 INFO L124 PetriNetUnfolderBase]: 4968/18140 cut-off events. [2024-10-14 17:18:58,031 INFO L125 PetriNetUnfolderBase]: For 2733/2797 co-relation queries the response was YES. [2024-10-14 17:18:58,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28074 conditions, 18140 events. 4968/18140 cut-off events. For 2733/2797 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 220363 event pairs, 2078 based on Foata normal form. 259/16274 useless extension candidates. Maximal degree in co-relation 22754. Up to 3640 conditions per place. [2024-10-14 17:18:58,128 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 40 selfloop transitions, 4 changer transitions 0/156 dead transitions. [2024-10-14 17:18:58,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 156 transitions, 502 flow [2024-10-14 17:18:58,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 17:18:58,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 17:18:58,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 469 transitions. [2024-10-14 17:18:58,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8950381679389313 [2024-10-14 17:18:58,132 INFO L175 Difference]: Start difference. First operand has 139 places, 135 transitions, 360 flow. Second operand 4 states and 469 transitions. [2024-10-14 17:18:58,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 156 transitions, 502 flow [2024-10-14 17:18:58,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 156 transitions, 488 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:18:58,148 INFO L231 Difference]: Finished difference. Result has 141 places, 136 transitions, 362 flow [2024-10-14 17:18:58,148 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=362, PETRI_PLACES=141, PETRI_TRANSITIONS=136} [2024-10-14 17:18:58,148 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 7 predicate places. [2024-10-14 17:18:58,148 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 136 transitions, 362 flow [2024-10-14 17:18:58,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.5) internal successors, (430), 4 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:58,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:18:58,149 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] [2024-10-14 17:18:58,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-14 17:18:58,149 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-14 17:18:58,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:18:58,149 INFO L85 PathProgramCache]: Analyzing trace with hash -467496006, now seen corresponding path program 1 times [2024-10-14 17:18:58,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:18:58,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636498616] [2024-10-14 17:18:58,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:58,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:18:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:58,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:58,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:18:58,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636498616] [2024-10-14 17:18:58,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636498616] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:18:58,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800705057] [2024-10-14 17:18:58,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:18:58,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:18:58,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:18:58,230 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:18:58,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 17:18:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:18:58,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 17:18:58,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:18:58,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:58,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:18:58,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:18:58,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800705057] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:18:58,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:18:58,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-14 17:18:58,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587423618] [2024-10-14 17:18:58,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:18:58,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 17:18:58,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:18:58,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 17:18:58,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-10-14 17:18:58,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 131 [2024-10-14 17:18:58,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 136 transitions, 362 flow. Second operand has 13 states, 13 states have (on average 104.92307692307692) internal successors, (1364), 13 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:18:58,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:18:58,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 131 [2024-10-14 17:18:58,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:19:01,471 INFO L124 PetriNetUnfolderBase]: 6978/24686 cut-off events. [2024-10-14 17:19:01,471 INFO L125 PetriNetUnfolderBase]: For 3252/3252 co-relation queries the response was YES. [2024-10-14 17:19:01,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38232 conditions, 24686 events. 6978/24686 cut-off events. For 3252/3252 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 308206 event pairs, 1505 based on Foata normal form. 15/21224 useless extension candidates. Maximal degree in co-relation 18423. Up to 4886 conditions per place. [2024-10-14 17:19:01,621 INFO L140 encePairwiseOnDemand]: 123/131 looper letters, 58 selfloop transitions, 11 changer transitions 0/178 dead transitions. [2024-10-14 17:19:01,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 178 transitions, 586 flow [2024-10-14 17:19:01,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 17:19:01,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 17:19:01,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1101 transitions. [2024-10-14 17:19:01,623 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8404580152671756 [2024-10-14 17:19:01,623 INFO L175 Difference]: Start difference. First operand has 141 places, 136 transitions, 362 flow. Second operand 10 states and 1101 transitions. [2024-10-14 17:19:01,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 178 transitions, 586 flow [2024-10-14 17:19:01,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 178 transitions, 580 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:19:01,645 INFO L231 Difference]: Finished difference. Result has 151 places, 142 transitions, 412 flow [2024-10-14 17:19:01,645 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=412, PETRI_PLACES=151, PETRI_TRANSITIONS=142} [2024-10-14 17:19:01,646 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 17 predicate places. [2024-10-14 17:19:01,646 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 142 transitions, 412 flow [2024-10-14 17:19:01,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 104.92307692307692) internal successors, (1364), 13 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:19:01,647 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:19:01,647 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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 17:19:01,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 17:19:01,847 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,SelfDestructingSolverStorable27 [2024-10-14 17:19:01,848 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-14 17:19:01,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:19:01,848 INFO L85 PathProgramCache]: Analyzing trace with hash 21450891, now seen corresponding path program 1 times [2024-10-14 17:19:01,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:19:01,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488373709] [2024-10-14 17:19:01,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:19:01,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:19:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:19:01,886 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-14 17:19:01,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:19:01,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488373709] [2024-10-14 17:19:01,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488373709] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:19:01,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:19:01,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:19:01,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203354298] [2024-10-14 17:19:01,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:19:01,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:19:01,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:19:01,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:19:01,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:19:01,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2024-10-14 17:19:01,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 142 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:19:01,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:19:01,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2024-10-14 17:19:01,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:19:05,690 INFO L124 PetriNetUnfolderBase]: 8594/30099 cut-off events. [2024-10-14 17:19:05,690 INFO L125 PetriNetUnfolderBase]: For 11365/13354 co-relation queries the response was YES. [2024-10-14 17:19:05,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51770 conditions, 30099 events. 8594/30099 cut-off events. For 11365/13354 co-relation queries the response was YES. Maximal size of possible extension queue 1084. Compared 393624 event pairs, 4943 based on Foata normal form. 35/26769 useless extension candidates. Maximal degree in co-relation 16490. Up to 9810 conditions per place. [2024-10-14 17:19:05,884 INFO L140 encePairwiseOnDemand]: 123/131 looper letters, 38 selfloop transitions, 11 changer transitions 0/162 dead transitions. [2024-10-14 17:19:05,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 162 transitions, 589 flow [2024-10-14 17:19:05,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:19:05,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:19:05,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2024-10-14 17:19:05,885 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9033078880407125 [2024-10-14 17:19:05,885 INFO L175 Difference]: Start difference. First operand has 151 places, 142 transitions, 412 flow. Second operand 3 states and 355 transitions. [2024-10-14 17:19:05,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 162 transitions, 589 flow [2024-10-14 17:19:05,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 162 transitions, 581 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-14 17:19:05,898 INFO L231 Difference]: Finished difference. Result has 153 places, 151 transitions, 500 flow [2024-10-14 17:19:05,898 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=500, PETRI_PLACES=153, PETRI_TRANSITIONS=151} [2024-10-14 17:19:05,899 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 19 predicate places. [2024-10-14 17:19:05,899 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 151 transitions, 500 flow [2024-10-14 17:19:05,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:19:05,899 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:19:05,900 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2024-10-14 17:19:05,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-14 17:19:05,900 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-14 17:19:05,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:19:05,900 INFO L85 PathProgramCache]: Analyzing trace with hash 856418559, now seen corresponding path program 1 times [2024-10-14 17:19:05,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:19:05,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679509769] [2024-10-14 17:19:05,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:19:05,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:19:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:19:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-14 17:19:05,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:19:05,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679509769] [2024-10-14 17:19:05,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679509769] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:19:05,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:19:05,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:19:05,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797001663] [2024-10-14 17:19:05,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:19:05,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:19:05,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:19:05,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:19:05,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:19:05,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 131 [2024-10-14 17:19:05,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 151 transitions, 500 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:19:05,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:19:05,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 131 [2024-10-14 17:19:05,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:19:06,849 INFO L124 PetriNetUnfolderBase]: 530/4989 cut-off events. [2024-10-14 17:19:06,849 INFO L125 PetriNetUnfolderBase]: For 1505/1679 co-relation queries the response was YES. [2024-10-14 17:19:06,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7637 conditions, 4989 events. 530/4989 cut-off events. For 1505/1679 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 54175 event pairs, 194 based on Foata normal form. 140/4670 useless extension candidates. Maximal degree in co-relation 2862. Up to 422 conditions per place. [2024-10-14 17:19:06,870 INFO L140 encePairwiseOnDemand]: 123/131 looper letters, 16 selfloop transitions, 8 changer transitions 0/149 dead transitions. [2024-10-14 17:19:06,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 149 transitions, 527 flow [2024-10-14 17:19:06,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:19:06,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:19:06,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 364 transitions. [2024-10-14 17:19:06,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.926208651399491 [2024-10-14 17:19:06,871 INFO L175 Difference]: Start difference. First operand has 153 places, 151 transitions, 500 flow. Second operand 3 states and 364 transitions. [2024-10-14 17:19:06,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 149 transitions, 527 flow [2024-10-14 17:19:06,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 149 transitions, 515 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-14 17:19:06,876 INFO L231 Difference]: Finished difference. Result has 153 places, 142 transitions, 436 flow [2024-10-14 17:19:06,877 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=436, PETRI_PLACES=153, PETRI_TRANSITIONS=142} [2024-10-14 17:19:06,877 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 19 predicate places. [2024-10-14 17:19:06,877 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 142 transitions, 436 flow [2024-10-14 17:19:06,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:19:06,877 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:19:06,878 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2024-10-14 17:19:06,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-14 17:19:06,878 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-14 17:19:06,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:19:06,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1238358746, now seen corresponding path program 1 times [2024-10-14 17:19:06,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:19:06,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867274163] [2024-10-14 17:19:06,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:19:06,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:19:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:19:06,912 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-14 17:19:06,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:19:06,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867274163] [2024-10-14 17:19:06,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867274163] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:19:06,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:19:06,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:19:06,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439068682] [2024-10-14 17:19:06,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:19:06,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:19:06,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:19:06,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:19:06,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:19:06,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2024-10-14 17:19:06,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 142 transitions, 436 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:19:06,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:19:06,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2024-10-14 17:19:06,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:19:07,460 INFO L124 PetriNetUnfolderBase]: 934/5912 cut-off events. [2024-10-14 17:19:07,461 INFO L125 PetriNetUnfolderBase]: For 3634/3736 co-relation queries the response was YES. [2024-10-14 17:19:07,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10624 conditions, 5912 events. 934/5912 cut-off events. For 3634/3736 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 66553 event pairs, 666 based on Foata normal form. 4/5388 useless extension candidates. Maximal degree in co-relation 3847. Up to 1548 conditions per place. [2024-10-14 17:19:07,492 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 30 selfloop transitions, 4 changer transitions 0/149 dead transitions. [2024-10-14 17:19:07,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 149 transitions, 540 flow [2024-10-14 17:19:07,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:19:07,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:19:07,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2024-10-14 17:19:07,493 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8778625954198473 [2024-10-14 17:19:07,493 INFO L175 Difference]: Start difference. First operand has 153 places, 142 transitions, 436 flow. Second operand 3 states and 345 transitions. [2024-10-14 17:19:07,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 149 transitions, 540 flow [2024-10-14 17:19:07,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 149 transitions, 532 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 17:19:07,501 INFO L231 Difference]: Finished difference. Result has 156 places, 145 transitions, 462 flow [2024-10-14 17:19:07,501 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=462, PETRI_PLACES=156, PETRI_TRANSITIONS=145} [2024-10-14 17:19:07,502 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 22 predicate places. [2024-10-14 17:19:07,502 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 145 transitions, 462 flow [2024-10-14 17:19:07,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:19:07,502 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:19:07,503 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-10-14 17:19:07,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-10-14 17:19:07,503 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-14 17:19:07,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:19:07,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1963262661, now seen corresponding path program 1 times [2024-10-14 17:19:07,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:19:07,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357281416] [2024-10-14 17:19:07,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:19:07,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:19:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:19:07,740 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:19:07,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:19:07,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357281416] [2024-10-14 17:19:07,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357281416] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:19:07,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593104299] [2024-10-14 17:19:07,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:19:07,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:19:07,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:19:07,743 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 17:19:07,746 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 17:19:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:19:07,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 17:19:07,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:19:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:19:08,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:19:08,193 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:19:08,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593104299] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:19:08,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:19:08,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-10-14 17:19:08,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962809044] [2024-10-14 17:19:08,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:19:08,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-14 17:19:08,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:19:08,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-14 17:19:08,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-10-14 17:19:08,344 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 131 [2024-10-14 17:19:08,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 145 transitions, 462 flow. Second operand has 19 states, 19 states have (on average 105.21052631578948) internal successors, (1999), 19 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:19:08,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:19:08,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 131 [2024-10-14 17:19:08,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:19:09,163 INFO L124 PetriNetUnfolderBase]: 1216/8145 cut-off events. [2024-10-14 17:19:09,164 INFO L125 PetriNetUnfolderBase]: For 3428/3694 co-relation queries the response was YES. [2024-10-14 17:19:09,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13774 conditions, 8145 events. 1216/8145 cut-off events. For 3428/3694 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 88349 event pairs, 191 based on Foata normal form. 20/7428 useless extension candidates. Maximal degree in co-relation 5543. Up to 893 conditions per place. [2024-10-14 17:19:09,207 INFO L140 encePairwiseOnDemand]: 123/131 looper letters, 84 selfloop transitions, 14 changer transitions 1/211 dead transitions. [2024-10-14 17:19:09,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 211 transitions, 868 flow [2024-10-14 17:19:09,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 17:19:09,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-14 17:19:09,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1542 transitions. [2024-10-14 17:19:09,209 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8407851690294439 [2024-10-14 17:19:09,209 INFO L175 Difference]: Start difference. First operand has 156 places, 145 transitions, 462 flow. Second operand 14 states and 1542 transitions. [2024-10-14 17:19:09,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 211 transitions, 868 flow [2024-10-14 17:19:09,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 211 transitions, 856 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-14 17:19:09,219 INFO L231 Difference]: Finished difference. Result has 171 places, 149 transitions, 517 flow [2024-10-14 17:19:09,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=517, PETRI_PLACES=171, PETRI_TRANSITIONS=149} [2024-10-14 17:19:09,220 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 37 predicate places. [2024-10-14 17:19:09,220 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 149 transitions, 517 flow [2024-10-14 17:19:09,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 105.21052631578948) internal successors, (1999), 19 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:19:09,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:19:09,222 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-10-14 17:19:09,234 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 17:19:09,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:19:09,422 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-14 17:19:09,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:19:09,423 INFO L85 PathProgramCache]: Analyzing trace with hash -466262246, now seen corresponding path program 1 times [2024-10-14 17:19:09,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:19:09,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62928526] [2024-10-14 17:19:09,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:19:09,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:19:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:19:09,463 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-14 17:19:09,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:19:09,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62928526] [2024-10-14 17:19:09,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62928526] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:19:09,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:19:09,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:19:09,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746157737] [2024-10-14 17:19:09,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:19:09,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:19:09,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:19:09,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:19:09,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:19:09,485 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2024-10-14 17:19:09,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 149 transitions, 517 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:19:09,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:19:09,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2024-10-14 17:19:09,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:19:10,179 INFO L124 PetriNetUnfolderBase]: 883/5630 cut-off events. [2024-10-14 17:19:10,179 INFO L125 PetriNetUnfolderBase]: For 4270/4366 co-relation queries the response was YES. [2024-10-14 17:19:10,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10695 conditions, 5630 events. 883/5630 cut-off events. For 4270/4366 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 61385 event pairs, 677 based on Foata normal form. 4/5132 useless extension candidates. Maximal degree in co-relation 9881. Up to 1476 conditions per place. [2024-10-14 17:19:10,212 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 30 selfloop transitions, 4 changer transitions 0/155 dead transitions. [2024-10-14 17:19:10,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 155 transitions, 612 flow [2024-10-14 17:19:10,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:19:10,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:19:10,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2024-10-14 17:19:10,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8753180661577609 [2024-10-14 17:19:10,214 INFO L175 Difference]: Start difference. First operand has 171 places, 149 transitions, 517 flow. Second operand 3 states and 344 transitions. [2024-10-14 17:19:10,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 155 transitions, 612 flow [2024-10-14 17:19:10,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 155 transitions, 594 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-10-14 17:19:10,240 INFO L231 Difference]: Finished difference. Result has 168 places, 152 transitions, 535 flow [2024-10-14 17:19:10,241 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=535, PETRI_PLACES=168, PETRI_TRANSITIONS=152} [2024-10-14 17:19:10,241 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 34 predicate places. [2024-10-14 17:19:10,241 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 152 transitions, 535 flow [2024-10-14 17:19:10,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:19:10,242 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:19:10,242 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-10-14 17:19:10,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-10-14 17:19:10,242 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-14 17:19:10,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:19:10,243 INFO L85 PathProgramCache]: Analyzing trace with hash 78765815, now seen corresponding path program 1 times [2024-10-14 17:19:10,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:19:10,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638362992] [2024-10-14 17:19:10,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:19:10,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:19:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:19:10,678 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-14 17:19:10,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:19:10,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638362992] [2024-10-14 17:19:10,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638362992] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:19:10,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:19:10,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:19:10,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62309411] [2024-10-14 17:19:10,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:19:10,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:19:10,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:19:10,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:19:10,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:19:10,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 131 [2024-10-14 17:19:10,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 152 transitions, 535 flow. Second operand has 6 states, 6 states have (on average 98.66666666666667) internal successors, (592), 6 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:19:10,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:19:10,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 131 [2024-10-14 17:19:10,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:19:12,194 INFO L124 PetriNetUnfolderBase]: 2726/11128 cut-off events. [2024-10-14 17:19:12,194 INFO L125 PetriNetUnfolderBase]: For 5193/5497 co-relation queries the response was YES. [2024-10-14 17:19:12,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21760 conditions, 11128 events. 2726/11128 cut-off events. For 5193/5497 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 122011 event pairs, 1342 based on Foata normal form. 0/10424 useless extension candidates. Maximal degree in co-relation 19469. Up to 2509 conditions per place. [2024-10-14 17:19:12,269 INFO L140 encePairwiseOnDemand]: 125/131 looper letters, 59 selfloop transitions, 6 changer transitions 0/183 dead transitions. [2024-10-14 17:19:12,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 183 transitions, 759 flow [2024-10-14 17:19:12,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:19:12,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:19:12,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 641 transitions. [2024-10-14 17:19:12,271 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8155216284987278 [2024-10-14 17:19:12,271 INFO L175 Difference]: Start difference. First operand has 168 places, 152 transitions, 535 flow. Second operand 6 states and 641 transitions. [2024-10-14 17:19:12,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 183 transitions, 759 flow [2024-10-14 17:19:12,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 183 transitions, 745 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-14 17:19:12,334 INFO L231 Difference]: Finished difference. Result has 170 places, 151 transitions, 531 flow [2024-10-14 17:19:12,334 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=531, PETRI_PLACES=170, PETRI_TRANSITIONS=151} [2024-10-14 17:19:12,334 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 36 predicate places. [2024-10-14 17:19:12,334 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 151 transitions, 531 flow [2024-10-14 17:19:12,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.66666666666667) internal successors, (592), 6 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:19:12,335 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:19:12,335 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:19:12,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-10-14 17:19:12,335 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-14 17:19:12,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:19:12,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1288918785, now seen corresponding path program 1 times [2024-10-14 17:19:12,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:19:12,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455234356] [2024-10-14 17:19:12,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:19:12,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:19:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:19:12,554 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 97 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:19:12,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:19:12,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455234356] [2024-10-14 17:19:12,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455234356] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:19:12,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845042621] [2024-10-14 17:19:12,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:19:12,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:19:12,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:19:12,557 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 17:19:12,559 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 17:19:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:19:12,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 17:19:12,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:19:12,965 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:19:12,965 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 17:19:12,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845042621] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:19:12,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 17:19:12,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 21 [2024-10-14 17:19:12,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080635449] [2024-10-14 17:19:12,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:19:12,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 17:19:12,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:19:12,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 17:19:12,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2024-10-14 17:19:13,062 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2024-10-14 17:19:13,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 151 transitions, 531 flow. Second operand has 12 states, 12 states have (on average 106.0) internal successors, (1272), 12 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:19:13,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:19:13,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2024-10-14 17:19:13,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:19:13,948 INFO L124 PetriNetUnfolderBase]: 1126/7473 cut-off events. [2024-10-14 17:19:13,948 INFO L125 PetriNetUnfolderBase]: For 4630/4866 co-relation queries the response was YES. [2024-10-14 17:19:13,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14417 conditions, 7473 events. 1126/7473 cut-off events. For 4630/4866 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 80455 event pairs, 159 based on Foata normal form. 48/6973 useless extension candidates. Maximal degree in co-relation 4931. Up to 557 conditions per place. [2024-10-14 17:19:13,995 INFO L140 encePairwiseOnDemand]: 123/131 looper letters, 89 selfloop transitions, 16 changer transitions 8/227 dead transitions. [2024-10-14 17:19:13,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 227 transitions, 978 flow [2024-10-14 17:19:13,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 17:19:13,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-14 17:19:13,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1778 transitions. [2024-10-14 17:19:13,998 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8482824427480916 [2024-10-14 17:19:13,998 INFO L175 Difference]: Start difference. First operand has 170 places, 151 transitions, 531 flow. Second operand 16 states and 1778 transitions. [2024-10-14 17:19:13,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 227 transitions, 978 flow [2024-10-14 17:19:14,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 227 transitions, 958 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-14 17:19:14,016 INFO L231 Difference]: Finished difference. Result has 175 places, 149 transitions, 528 flow [2024-10-14 17:19:14,017 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=528, PETRI_PLACES=175, PETRI_TRANSITIONS=149} [2024-10-14 17:19:14,017 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 41 predicate places. [2024-10-14 17:19:14,017 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 149 transitions, 528 flow [2024-10-14 17:19:14,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 106.0) internal successors, (1272), 12 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:19:14,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:19:14,018 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:19:14,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-14 17:19:14,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:19:14,219 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-14 17:19:14,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:19:14,219 INFO L85 PathProgramCache]: Analyzing trace with hash 66093328, now seen corresponding path program 1 times [2024-10-14 17:19:14,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:19:14,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996239155] [2024-10-14 17:19:14,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:19:14,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:19:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:19:14,311 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-10-14 17:19:14,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:19:14,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996239155] [2024-10-14 17:19:14,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996239155] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:19:14,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:19:14,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:19:14,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135347281] [2024-10-14 17:19:14,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:19:14,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:19:14,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:19:14,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:19:14,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:19:14,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 131 [2024-10-14 17:19:14,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 149 transitions, 528 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:19:14,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:19:14,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 131 [2024-10-14 17:19:14,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:19:15,466 INFO L124 PetriNetUnfolderBase]: 1353/8854 cut-off events. [2024-10-14 17:19:15,466 INFO L125 PetriNetUnfolderBase]: For 5628/5712 co-relation queries the response was YES. [2024-10-14 17:19:15,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17164 conditions, 8854 events. 1353/8854 cut-off events. For 5628/5712 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 105730 event pairs, 605 based on Foata normal form. 0/8294 useless extension candidates. Maximal degree in co-relation 16379. Up to 1591 conditions per place. [2024-10-14 17:19:15,513 INFO L140 encePairwiseOnDemand]: 124/131 looper letters, 30 selfloop transitions, 9 changer transitions 1/162 dead transitions. [2024-10-14 17:19:15,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 162 transitions, 662 flow [2024-10-14 17:19:15,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:19:15,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:19:15,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2024-10-14 17:19:15,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9033078880407125 [2024-10-14 17:19:15,514 INFO L175 Difference]: Start difference. First operand has 175 places, 149 transitions, 528 flow. Second operand 3 states and 355 transitions. [2024-10-14 17:19:15,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 162 transitions, 662 flow [2024-10-14 17:19:15,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 162 transitions, 608 flow, removed 3 selfloop flow, removed 17 redundant places. [2024-10-14 17:19:15,587 INFO L231 Difference]: Finished difference. Result has 162 places, 153 transitions, 550 flow [2024-10-14 17:19:15,588 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=550, PETRI_PLACES=162, PETRI_TRANSITIONS=153} [2024-10-14 17:19:15,588 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 28 predicate places. [2024-10-14 17:19:15,588 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 153 transitions, 550 flow [2024-10-14 17:19:15,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:19:15,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:19:15,589 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:19:15,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-10-14 17:19:15,589 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-14 17:19:15,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:19:15,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1305300435, now seen corresponding path program 1 times [2024-10-14 17:19:15,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:19:15,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592405806] [2024-10-14 17:19:15,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:19:15,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:19:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:19:15,754 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-14 17:19:15,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:19:15,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592405806] [2024-10-14 17:19:15,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592405806] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:19:15,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146681911] [2024-10-14 17:19:15,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:19:15,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:19:15,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:19:15,758 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 17:19:15,759 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 17:19:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:19:15,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 17:19:15,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:19:16,076 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-14 17:19:16,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:19:16,204 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-14 17:19:16,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146681911] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:19:16,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:19:16,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-14 17:19:16,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577633266] [2024-10-14 17:19:16,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:19:16,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 17:19:16,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:19:16,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 17:19:16,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-10-14 17:19:16,271 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 131 [2024-10-14 17:19:16,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 153 transitions, 550 flow. Second operand has 10 states, 10 states have (on average 108.4) internal successors, (1084), 10 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:19:16,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:19:16,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 131 [2024-10-14 17:19:16,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:19:17,012 INFO L124 PetriNetUnfolderBase]: 1022/5505 cut-off events. [2024-10-14 17:19:17,012 INFO L125 PetriNetUnfolderBase]: For 3594/3790 co-relation queries the response was YES. [2024-10-14 17:19:17,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10593 conditions, 5505 events. 1022/5505 cut-off events. For 3594/3790 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 55239 event pairs, 238 based on Foata normal form. 80/5465 useless extension candidates. Maximal degree in co-relation 9919. Up to 562 conditions per place. [2024-10-14 17:19:17,039 INFO L140 encePairwiseOnDemand]: 125/131 looper letters, 53 selfloop transitions, 7 changer transitions 8/196 dead transitions. [2024-10-14 17:19:17,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 196 transitions, 826 flow [2024-10-14 17:19:17,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:19:17,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:19:17,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 699 transitions. [2024-10-14 17:19:17,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8893129770992366 [2024-10-14 17:19:17,041 INFO L175 Difference]: Start difference. First operand has 162 places, 153 transitions, 550 flow. Second operand 6 states and 699 transitions. [2024-10-14 17:19:17,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 196 transitions, 826 flow [2024-10-14 17:19:17,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 196 transitions, 808 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:19:17,058 INFO L231 Difference]: Finished difference. Result has 167 places, 155 transitions, 564 flow [2024-10-14 17:19:17,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=564, PETRI_PLACES=167, PETRI_TRANSITIONS=155} [2024-10-14 17:19:17,058 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 33 predicate places. [2024-10-14 17:19:17,059 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 155 transitions, 564 flow [2024-10-14 17:19:17,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 108.4) internal successors, (1084), 10 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:19:17,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:19:17,060 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:19:17,077 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 17:19:17,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-10-14 17:19:17,261 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-14 17:19:17,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:19:17,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1814708090, now seen corresponding path program 1 times [2024-10-14 17:19:17,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:19:17,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457434648] [2024-10-14 17:19:17,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:19:17,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:19:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:19:19,347 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 4 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:19:19,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:19:19,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457434648] [2024-10-14 17:19:19,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457434648] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:19:19,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351953923] [2024-10-14 17:19:19,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:19:19,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:19:19,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:19:19,351 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 17:19:19,352 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 17:19:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:19:19,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-14 17:19:19,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:19:19,990 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 13 treesize of output 9 [2024-10-14 17:19:20,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 17:19:20,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-10-14 17:19:20,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 17 treesize of output 9 [2024-10-14 17:19:20,573 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 4 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:19:20,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:19:22,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 101 treesize of output 93 [2024-10-14 17:19:22,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 156 treesize of output 140 [2024-10-14 17:19:22,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 100 treesize of output 92 [2024-10-14 17:19:22,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 324 treesize of output 292 [2024-10-14 17:19:24,294 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 4 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:19:24,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351953923] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:19:24,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:19:24,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 18] total 53 [2024-10-14 17:19:24,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374965536] [2024-10-14 17:19:24,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:19:24,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-10-14 17:19:24,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:19:24,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-10-14 17:19:24,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=2499, Unknown=0, NotChecked=0, Total=2756 [2024-10-14 17:19:32,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 131 [2024-10-14 17:19:32,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 155 transitions, 564 flow. Second operand has 53 states, 53 states have (on average 96.62264150943396) internal successors, (5121), 53 states have internal predecessors, (5121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:19:32,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:19:32,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 131 [2024-10-14 17:19:32,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand