./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ec355916cf6ee76d4008e84bb2b3ecc632256e3b320d2f47b453f4ca1f46acbc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 23:13:35,280 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 23:13:35,342 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-16 23:13:35,346 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 23:13:35,347 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 23:13:35,368 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 23:13:35,369 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 23:13:35,370 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 23:13:35,371 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 23:13:35,371 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 23:13:35,371 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 23:13:35,372 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 23:13:35,372 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 23:13:35,373 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 23:13:35,374 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 23:13:35,374 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 23:13:35,375 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 23:13:35,375 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 23:13:35,375 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 23:13:35,376 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 23:13:35,378 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 23:13:35,379 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 23:13:35,381 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-16 23:13:35,382 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 23:13:35,382 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-16 23:13:35,382 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 23:13:35,382 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 23:13:35,383 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 23:13:35,383 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 23:13:35,383 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 23:13:35,383 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 23:13:35,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 23:13:35,384 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 23:13:35,384 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 23:13:35,384 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 23:13:35,385 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 23:13:35,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 23:13:35,385 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 23:13:35,385 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 23:13:35,386 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 23:13:35,386 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 23:13:35,386 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec355916cf6ee76d4008e84bb2b3ecc632256e3b320d2f47b453f4ca1f46acbc [2024-11-16 23:13:35,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 23:13:35,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 23:13:35,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 23:13:35,672 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 23:13:35,673 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 23:13:35,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2024-11-16 23:13:37,140 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 23:13:37,398 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 23:13:37,399 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2024-11-16 23:13:37,412 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0a818fb0/3d2b2b7e61894c5e85f2e27ac16722f8/FLAG33e87dc2d [2024-11-16 23:13:37,425 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0a818fb0/3d2b2b7e61894c5e85f2e27ac16722f8 [2024-11-16 23:13:37,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 23:13:37,428 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 23:13:37,430 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 23:13:37,430 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 23:13:37,437 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 23:13:37,438 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:13:37" (1/1) ... [2024-11-16 23:13:37,439 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465113eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:37, skipping insertion in model container [2024-11-16 23:13:37,440 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:13:37" (1/1) ... [2024-11-16 23:13:37,492 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 23:13:37,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 23:13:37,956 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 23:13:38,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 23:13:38,054 INFO L204 MainTranslator]: Completed translation [2024-11-16 23:13:38,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:38 WrapperNode [2024-11-16 23:13:38,055 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 23:13:38,056 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 23:13:38,056 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 23:13:38,057 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 23:13:38,064 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:38" (1/1) ... [2024-11-16 23:13:38,082 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:38" (1/1) ... [2024-11-16 23:13:38,104 INFO L138 Inliner]: procedures = 164, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 114 [2024-11-16 23:13:38,105 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 23:13:38,106 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 23:13:38,106 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 23:13:38,106 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 23:13:38,114 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:38" (1/1) ... [2024-11-16 23:13:38,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:38" (1/1) ... [2024-11-16 23:13:38,121 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:38" (1/1) ... [2024-11-16 23:13:38,125 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:38" (1/1) ... [2024-11-16 23:13:38,132 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:38" (1/1) ... [2024-11-16 23:13:38,140 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:38" (1/1) ... [2024-11-16 23:13:38,142 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:38" (1/1) ... [2024-11-16 23:13:38,143 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:38" (1/1) ... [2024-11-16 23:13:38,150 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 23:13:38,151 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 23:13:38,154 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 23:13:38,154 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 23:13:38,155 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:38" (1/1) ... [2024-11-16 23:13:38,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 23:13:38,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:13:38,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 23:13:38,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 23:13:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-16 23:13:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-16 23:13:38,248 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-16 23:13:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-16 23:13:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-16 23:13:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 23:13:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-16 23:13:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-16 23:13:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 23:13:38,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 23:13:38,251 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 23:13:38,381 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 23:13:38,383 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 23:13:38,666 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 23:13:38,667 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 23:13:38,704 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 23:13:38,706 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 23:13:38,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:13:38 BoogieIcfgContainer [2024-11-16 23:13:38,706 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 23:13:38,710 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 23:13:38,711 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 23:13:38,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 23:13:38,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:13:37" (1/3) ... [2024-11-16 23:13:38,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4920d64a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:13:38, skipping insertion in model container [2024-11-16 23:13:38,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:38" (2/3) ... [2024-11-16 23:13:38,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4920d64a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:13:38, skipping insertion in model container [2024-11-16 23:13:38,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:13:38" (3/3) ... [2024-11-16 23:13:38,722 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt.i [2024-11-16 23:13:38,742 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 23:13:38,742 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-11-16 23:13:38,742 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 23:13:38,836 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 23:13:38,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 133 transitions, 270 flow [2024-11-16 23:13:38,938 INFO L124 PetriNetUnfolderBase]: 12/143 cut-off events. [2024-11-16 23:13:38,938 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 23:13:38,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 143 events. 12/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 195 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2024-11-16 23:13:38,951 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 133 transitions, 270 flow [2024-11-16 23:13:38,956 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 133 transitions, 270 flow [2024-11-16 23:13:38,970 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 23:13:38,980 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;@61a940ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 23:13:38,980 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-16 23:13:38,999 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 23:13:39,000 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-11-16 23:13:39,000 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 23:13:39,000 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:39,001 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] [2024-11-16 23:13:39,002 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-16 23:13:39,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:39,008 INFO L85 PathProgramCache]: Analyzing trace with hash -380182658, now seen corresponding path program 1 times [2024-11-16 23:13:39,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:39,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957489215] [2024-11-16 23:13:39,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:39,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:39,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:13:39,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:39,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957489215] [2024-11-16 23:13:39,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957489215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:39,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:39,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:13:39,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289595069] [2024-11-16 23:13:39,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:39,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:13:39,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:39,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:13:39,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:13:40,131 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 133 [2024-11-16 23:13:40,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 133 transitions, 270 flow. Second operand has 6 states, 6 states have (on average 104.5) internal successors, (627), 6 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:40,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:40,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 133 [2024-11-16 23:13:40,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:40,217 INFO L124 PetriNetUnfolderBase]: 5/125 cut-off events. [2024-11-16 23:13:40,220 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-16 23:13:40,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 125 events. 5/125 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 135 event pairs, 0 based on Foata normal form. 25/139 useless extension candidates. Maximal degree in co-relation 84. Up to 16 conditions per place. [2024-11-16 23:13:40,224 INFO L140 encePairwiseOnDemand]: 120/133 looper letters, 15 selfloop transitions, 5 changer transitions 0/120 dead transitions. [2024-11-16 23:13:40,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 120 transitions, 284 flow [2024-11-16 23:13:40,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:13:40,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 23:13:40,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 646 transitions. [2024-11-16 23:13:40,242 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8095238095238095 [2024-11-16 23:13:40,247 INFO L175 Difference]: Start difference. First operand has 125 places, 133 transitions, 270 flow. Second operand 6 states and 646 transitions. [2024-11-16 23:13:40,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 120 transitions, 284 flow [2024-11-16 23:13:40,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 120 transitions, 284 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 23:13:40,254 INFO L231 Difference]: Finished difference. Result has 123 places, 120 transitions, 254 flow [2024-11-16 23:13:40,259 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=254, PETRI_PLACES=123, PETRI_TRANSITIONS=120} [2024-11-16 23:13:40,266 INFO L277 CegarLoopForPetriNet]: 125 programPoint places, -2 predicate places. [2024-11-16 23:13:40,266 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 120 transitions, 254 flow [2024-11-16 23:13:40,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.5) internal successors, (627), 6 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:40,267 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:40,267 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-16 23:13:40,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 23:13:40,268 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-16 23:13:40,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:40,270 INFO L85 PathProgramCache]: Analyzing trace with hash 372306082, now seen corresponding path program 1 times [2024-11-16 23:13:40,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:40,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919490024] [2024-11-16 23:13:40,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:40,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 23:13:40,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:40,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919490024] [2024-11-16 23:13:40,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919490024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:40,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:40,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 23:13:40,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55191337] [2024-11-16 23:13:40,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:40,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 23:13:40,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:40,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 23:13:40,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 23:13:40,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 133 [2024-11-16 23:13:40,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 120 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:40,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:40,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 133 [2024-11-16 23:13:40,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:40,454 INFO L124 PetriNetUnfolderBase]: 5/138 cut-off events. [2024-11-16 23:13:40,454 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-16 23:13:40,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 138 events. 5/138 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 126 event pairs, 0 based on Foata normal form. 1/129 useless extension candidates. Maximal degree in co-relation 102. Up to 11 conditions per place. [2024-11-16 23:13:40,456 INFO L140 encePairwiseOnDemand]: 130/133 looper letters, 9 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2024-11-16 23:13:40,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 121 transitions, 280 flow [2024-11-16 23:13:40,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 23:13:40,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 23:13:40,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2024-11-16 23:13:40,459 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8872180451127819 [2024-11-16 23:13:40,459 INFO L175 Difference]: Start difference. First operand has 123 places, 120 transitions, 254 flow. Second operand 3 states and 354 transitions. [2024-11-16 23:13:40,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 121 transitions, 280 flow [2024-11-16 23:13:40,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 121 transitions, 268 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-16 23:13:40,466 INFO L231 Difference]: Finished difference. Result has 121 places, 121 transitions, 256 flow [2024-11-16 23:13:40,467 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=121, PETRI_TRANSITIONS=121} [2024-11-16 23:13:40,468 INFO L277 CegarLoopForPetriNet]: 125 programPoint places, -4 predicate places. [2024-11-16 23:13:40,468 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 121 transitions, 256 flow [2024-11-16 23:13:40,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:40,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:40,469 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-16 23:13:40,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 23:13:40,470 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-16 23:13:40,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:40,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1826425197, now seen corresponding path program 1 times [2024-11-16 23:13:40,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:40,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874688640] [2024-11-16 23:13:40,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:40,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:40,603 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 23:13:40,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:40,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874688640] [2024-11-16 23:13:40,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874688640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:13:40,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333628426] [2024-11-16 23:13:40,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:40,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:40,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:13:40,608 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:13:40,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 23:13:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:40,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 23:13:40,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:13:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 23:13:40,791 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:13:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 23:13:40,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333628426] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:13:40,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:13:40,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-16 23:13:40,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151377598] [2024-11-16 23:13:40,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:13:40,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 23:13:40,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:40,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 23:13:40,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-16 23:13:40,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 133 [2024-11-16 23:13:40,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 121 transitions, 256 flow. Second operand has 10 states, 10 states have (on average 112.9) internal successors, (1129), 10 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:40,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:40,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 133 [2024-11-16 23:13:40,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:41,100 INFO L124 PetriNetUnfolderBase]: 5/155 cut-off events. [2024-11-16 23:13:41,101 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-16 23:13:41,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 155 events. 5/155 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 102 event pairs, 0 based on Foata normal form. 2/147 useless extension candidates. Maximal degree in co-relation 139. Up to 11 conditions per place. [2024-11-16 23:13:41,102 INFO L140 encePairwiseOnDemand]: 127/133 looper letters, 13 selfloop transitions, 9 changer transitions 0/129 dead transitions. [2024-11-16 23:13:41,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 129 transitions, 318 flow [2024-11-16 23:13:41,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 23:13:41,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-16 23:13:41,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1023 transitions. [2024-11-16 23:13:41,107 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8546365914786967 [2024-11-16 23:13:41,107 INFO L175 Difference]: Start difference. First operand has 121 places, 121 transitions, 256 flow. Second operand 9 states and 1023 transitions. [2024-11-16 23:13:41,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 129 transitions, 318 flow [2024-11-16 23:13:41,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 129 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 23:13:41,114 INFO L231 Difference]: Finished difference. Result has 131 places, 127 transitions, 304 flow [2024-11-16 23:13:41,115 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=304, PETRI_PLACES=131, PETRI_TRANSITIONS=127} [2024-11-16 23:13:41,115 INFO L277 CegarLoopForPetriNet]: 125 programPoint places, 6 predicate places. [2024-11-16 23:13:41,116 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 127 transitions, 304 flow [2024-11-16 23:13:41,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 112.9) internal successors, (1129), 10 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:41,117 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:41,118 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 23:13:41,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 23:13:41,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:41,323 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-16 23:13:41,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:41,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1389749557, now seen corresponding path program 2 times [2024-11-16 23:13:41,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:41,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989488906] [2024-11-16 23:13:41,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:41,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:41,557 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 23:13:41,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:41,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989488906] [2024-11-16 23:13:41,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989488906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:13:41,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248608090] [2024-11-16 23:13:41,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 23:13:41,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:41,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:13:41,562 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:13:41,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 23:13:41,670 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 23:13:41,670 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 23:13:41,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 23:13:41,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:13:41,780 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 23:13:41,781 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:13:41,935 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 23:13:41,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248608090] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:13:41,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:13:41,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-16 23:13:41,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304485750] [2024-11-16 23:13:41,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:13:41,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 23:13:41,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:41,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 23:13:41,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-16 23:13:42,038 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 133 [2024-11-16 23:13:42,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 127 transitions, 304 flow. Second operand has 15 states, 15 states have (on average 113.06666666666666) internal successors, (1696), 15 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:42,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:42,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 133 [2024-11-16 23:13:42,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:42,219 INFO L124 PetriNetUnfolderBase]: 5/197 cut-off events. [2024-11-16 23:13:42,220 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-11-16 23:13:42,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 197 events. 5/197 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 102 event pairs, 0 based on Foata normal form. 3/190 useless extension candidates. Maximal degree in co-relation 194. Up to 11 conditions per place. [2024-11-16 23:13:42,222 INFO L140 encePairwiseOnDemand]: 127/133 looper letters, 16 selfloop transitions, 18 changer transitions 0/141 dead transitions. [2024-11-16 23:13:42,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 141 transitions, 446 flow [2024-11-16 23:13:42,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 23:13:42,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-16 23:13:42,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2035 transitions. [2024-11-16 23:13:42,227 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8500417710944027 [2024-11-16 23:13:42,228 INFO L175 Difference]: Start difference. First operand has 131 places, 127 transitions, 304 flow. Second operand 18 states and 2035 transitions. [2024-11-16 23:13:42,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 141 transitions, 446 flow [2024-11-16 23:13:42,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 141 transitions, 434 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-16 23:13:42,232 INFO L231 Difference]: Finished difference. Result has 151 places, 137 transitions, 404 flow [2024-11-16 23:13:42,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=404, PETRI_PLACES=151, PETRI_TRANSITIONS=137} [2024-11-16 23:13:42,234 INFO L277 CegarLoopForPetriNet]: 125 programPoint places, 26 predicate places. [2024-11-16 23:13:42,234 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 137 transitions, 404 flow [2024-11-16 23:13:42,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 113.06666666666666) internal successors, (1696), 15 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:42,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:42,236 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2024-11-16 23:13:42,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 23:13:42,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-16 23:13:42,442 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-16 23:13:42,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:42,442 INFO L85 PathProgramCache]: Analyzing trace with hash -2070121976, now seen corresponding path program 3 times [2024-11-16 23:13:42,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:42,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670493831] [2024-11-16 23:13:42,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:42,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:13:42,492 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 23:13:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:13:42,562 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 23:13:42,563 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 23:13:42,564 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-16 23:13:42,565 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-11-16 23:13:42,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-11-16 23:13:42,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-11-16 23:13:42,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-11-16 23:13:42,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-11-16 23:13:42,567 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-11-16 23:13:42,567 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-11-16 23:13:42,568 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-11-16 23:13:42,568 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-11-16 23:13:42,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 23:13:42,569 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-16 23:13:42,573 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-16 23:13:42,573 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-16 23:13:42,625 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 23:13:42,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 209 transitions, 428 flow [2024-11-16 23:13:42,678 INFO L124 PetriNetUnfolderBase]: 21/231 cut-off events. [2024-11-16 23:13:42,679 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 23:13:42,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 231 events. 21/231 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 527 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 162. Up to 6 conditions per place. [2024-11-16 23:13:42,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 209 transitions, 428 flow [2024-11-16 23:13:42,688 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 209 transitions, 428 flow [2024-11-16 23:13:42,690 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 23:13:42,690 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;@61a940ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 23:13:42,692 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-16 23:13:42,696 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 23:13:42,697 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-11-16 23:13:42,697 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 23:13:42,697 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:42,698 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] [2024-11-16 23:13:42,698 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-16 23:13:42,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:42,699 INFO L85 PathProgramCache]: Analyzing trace with hash -230298178, now seen corresponding path program 1 times [2024-11-16 23:13:42,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:42,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795320473] [2024-11-16 23:13:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:42,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:42,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:13:42,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:42,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795320473] [2024-11-16 23:13:42,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795320473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:42,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:42,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:13:42,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869902880] [2024-11-16 23:13:42,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:42,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:13:42,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:42,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:13:42,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:13:43,088 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 209 [2024-11-16 23:13:43,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 209 transitions, 428 flow. Second operand has 6 states, 6 states have (on average 166.5) internal successors, (999), 6 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:43,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:43,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 209 [2024-11-16 23:13:43,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:43,264 INFO L124 PetriNetUnfolderBase]: 134/877 cut-off events. [2024-11-16 23:13:43,265 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-16 23:13:43,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1107 conditions, 877 events. 134/877 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 5518 event pairs, 72 based on Foata normal form. 251/1000 useless extension candidates. Maximal degree in co-relation 396. Up to 193 conditions per place. [2024-11-16 23:13:43,273 INFO L140 encePairwiseOnDemand]: 192/209 looper letters, 24 selfloop transitions, 5 changer transitions 0/190 dead transitions. [2024-11-16 23:13:43,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 190 transitions, 448 flow [2024-11-16 23:13:43,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:13:43,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 23:13:43,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1031 transitions. [2024-11-16 23:13:43,276 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8221690590111643 [2024-11-16 23:13:43,276 INFO L175 Difference]: Start difference. First operand has 195 places, 209 transitions, 428 flow. Second operand 6 states and 1031 transitions. [2024-11-16 23:13:43,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 190 transitions, 448 flow [2024-11-16 23:13:43,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 190 transitions, 448 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 23:13:43,281 INFO L231 Difference]: Finished difference. Result has 191 places, 190 transitions, 400 flow [2024-11-16 23:13:43,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=400, PETRI_PLACES=191, PETRI_TRANSITIONS=190} [2024-11-16 23:13:43,282 INFO L277 CegarLoopForPetriNet]: 195 programPoint places, -4 predicate places. [2024-11-16 23:13:43,283 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 190 transitions, 400 flow [2024-11-16 23:13:43,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.5) internal successors, (999), 6 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:43,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:43,285 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:43,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 23:13:43,285 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-16 23:13:43,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:43,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1661324200, now seen corresponding path program 1 times [2024-11-16 23:13:43,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:43,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736339178] [2024-11-16 23:13:43,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:43,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 23:13:43,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:43,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736339178] [2024-11-16 23:13:43,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736339178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:43,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:43,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 23:13:43,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192312691] [2024-11-16 23:13:43,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:43,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 23:13:43,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:43,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 23:13:43,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 23:13:43,338 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 209 [2024-11-16 23:13:43,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 190 transitions, 400 flow. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:43,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:43,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 209 [2024-11-16 23:13:43,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:43,418 INFO L124 PetriNetUnfolderBase]: 45/547 cut-off events. [2024-11-16 23:13:43,418 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-16 23:13:43,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635 conditions, 547 events. 45/547 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2454 event pairs, 20 based on Foata normal form. 1/487 useless extension candidates. Maximal degree in co-relation 571. Up to 56 conditions per place. [2024-11-16 23:13:43,423 INFO L140 encePairwiseOnDemand]: 206/209 looper letters, 14 selfloop transitions, 2 changer transitions 0/191 dead transitions. [2024-11-16 23:13:43,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 191 transitions, 436 flow [2024-11-16 23:13:43,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 23:13:43,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 23:13:43,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2024-11-16 23:13:43,426 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8883572567783095 [2024-11-16 23:13:43,426 INFO L175 Difference]: Start difference. First operand has 191 places, 190 transitions, 400 flow. Second operand 3 states and 557 transitions. [2024-11-16 23:13:43,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 191 transitions, 436 flow [2024-11-16 23:13:43,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 191 transitions, 424 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-16 23:13:43,430 INFO L231 Difference]: Finished difference. Result has 189 places, 191 transitions, 402 flow [2024-11-16 23:13:43,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=189, PETRI_TRANSITIONS=191} [2024-11-16 23:13:43,432 INFO L277 CegarLoopForPetriNet]: 195 programPoint places, -6 predicate places. [2024-11-16 23:13:43,432 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 191 transitions, 402 flow [2024-11-16 23:13:43,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:43,435 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:43,435 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 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] [2024-11-16 23:13:43,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 23:13:43,435 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-16 23:13:43,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:43,436 INFO L85 PathProgramCache]: Analyzing trace with hash -2020108871, now seen corresponding path program 1 times [2024-11-16 23:13:43,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:43,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912423925] [2024-11-16 23:13:43,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:43,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:43,501 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 23:13:43,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:43,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912423925] [2024-11-16 23:13:43,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912423925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:13:43,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794996287] [2024-11-16 23:13:43,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:43,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:43,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:13:43,505 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:13:43,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 23:13:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:43,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 23:13:43,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:13:43,622 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 23:13:43,623 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:13:43,661 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 23:13:43,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794996287] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:13:43,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:13:43,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-16 23:13:43,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139323870] [2024-11-16 23:13:43,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:13:43,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 23:13:43,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:43,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 23:13:43,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-16 23:13:43,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 209 [2024-11-16 23:13:43,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 191 transitions, 402 flow. Second operand has 10 states, 10 states have (on average 179.0) internal successors, (1790), 10 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:43,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:43,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 209 [2024-11-16 23:13:43,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:43,884 INFO L124 PetriNetUnfolderBase]: 45/564 cut-off events. [2024-11-16 23:13:43,884 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-16 23:13:43,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 564 events. 45/564 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2430 event pairs, 20 based on Foata normal form. 2/505 useless extension candidates. Maximal degree in co-relation 608. Up to 56 conditions per place. [2024-11-16 23:13:43,889 INFO L140 encePairwiseOnDemand]: 203/209 looper letters, 18 selfloop transitions, 9 changer transitions 0/199 dead transitions. [2024-11-16 23:13:43,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 199 transitions, 474 flow [2024-11-16 23:13:43,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 23:13:43,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-16 23:13:43,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1622 transitions. [2024-11-16 23:13:43,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8623072833599149 [2024-11-16 23:13:43,893 INFO L175 Difference]: Start difference. First operand has 189 places, 191 transitions, 402 flow. Second operand 9 states and 1622 transitions. [2024-11-16 23:13:43,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 199 transitions, 474 flow [2024-11-16 23:13:43,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 199 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 23:13:43,897 INFO L231 Difference]: Finished difference. Result has 199 places, 197 transitions, 450 flow [2024-11-16 23:13:43,897 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=450, PETRI_PLACES=199, PETRI_TRANSITIONS=197} [2024-11-16 23:13:43,898 INFO L277 CegarLoopForPetriNet]: 195 programPoint places, 4 predicate places. [2024-11-16 23:13:43,898 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 197 transitions, 450 flow [2024-11-16 23:13:43,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 179.0) internal successors, (1790), 10 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:43,900 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:43,900 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:43,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 23:13:44,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:44,105 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-16 23:13:44,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:44,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1300161691, now seen corresponding path program 2 times [2024-11-16 23:13:44,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:44,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726192428] [2024-11-16 23:13:44,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:44,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:44,245 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 23:13:44,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:44,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726192428] [2024-11-16 23:13:44,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726192428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:13:44,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028073536] [2024-11-16 23:13:44,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 23:13:44,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:44,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:13:44,248 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:13:44,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 23:13:44,342 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 23:13:44,343 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 23:13:44,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 23:13:44,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:13:44,418 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 23:13:44,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:13:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 23:13:44,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028073536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:13:44,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:13:44,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-16 23:13:44,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812943909] [2024-11-16 23:13:44,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:13:44,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 23:13:44,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:44,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 23:13:44,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-16 23:13:44,673 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 209 [2024-11-16 23:13:44,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 197 transitions, 450 flow. Second operand has 15 states, 15 states have (on average 179.13333333333333) internal successors, (2687), 15 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:44,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:44,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 209 [2024-11-16 23:13:44,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:44,964 INFO L124 PetriNetUnfolderBase]: 45/606 cut-off events. [2024-11-16 23:13:44,965 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-16 23:13:44,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 756 conditions, 606 events. 45/606 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2428 event pairs, 20 based on Foata normal form. 3/548 useless extension candidates. Maximal degree in co-relation 568. Up to 56 conditions per place. [2024-11-16 23:13:44,972 INFO L140 encePairwiseOnDemand]: 203/209 looper letters, 21 selfloop transitions, 18 changer transitions 0/211 dead transitions. [2024-11-16 23:13:44,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 211 transitions, 602 flow [2024-11-16 23:13:44,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 23:13:44,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-16 23:13:44,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3228 transitions. [2024-11-16 23:13:44,980 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8580542264752791 [2024-11-16 23:13:44,981 INFO L175 Difference]: Start difference. First operand has 199 places, 197 transitions, 450 flow. Second operand 18 states and 3228 transitions. [2024-11-16 23:13:44,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 211 transitions, 602 flow [2024-11-16 23:13:44,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 211 transitions, 590 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-16 23:13:44,988 INFO L231 Difference]: Finished difference. Result has 219 places, 207 transitions, 550 flow [2024-11-16 23:13:44,989 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=550, PETRI_PLACES=219, PETRI_TRANSITIONS=207} [2024-11-16 23:13:44,989 INFO L277 CegarLoopForPetriNet]: 195 programPoint places, 24 predicate places. [2024-11-16 23:13:44,990 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 207 transitions, 550 flow [2024-11-16 23:13:44,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 179.13333333333333) internal successors, (2687), 15 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:44,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:44,993 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:45,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 23:13:45,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:45,194 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-16 23:13:45,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:45,196 INFO L85 PathProgramCache]: Analyzing trace with hash -801759794, now seen corresponding path program 3 times [2024-11-16 23:13:45,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:45,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947689936] [2024-11-16 23:13:45,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:45,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:13:45,233 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 23:13:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:13:45,280 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 23:13:45,281 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 23:13:45,281 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-11-16 23:13:45,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-11-16 23:13:45,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-11-16 23:13:45,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-11-16 23:13:45,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-11-16 23:13:45,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-11-16 23:13:45,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-11-16 23:13:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2024-11-16 23:13:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-11-16 23:13:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-11-16 23:13:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-11-16 23:13:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-11-16 23:13:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-11-16 23:13:45,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-11-16 23:13:45,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 23:13:45,284 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-16 23:13:45,285 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-16 23:13:45,285 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-16 23:13:45,328 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 23:13:45,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 285 transitions, 588 flow [2024-11-16 23:13:45,365 INFO L124 PetriNetUnfolderBase]: 30/319 cut-off events. [2024-11-16 23:13:45,365 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-16 23:13:45,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 319 events. 30/319 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 974 event pairs, 0 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 237. Up to 8 conditions per place. [2024-11-16 23:13:45,369 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 285 transitions, 588 flow [2024-11-16 23:13:45,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 285 transitions, 588 flow [2024-11-16 23:13:45,374 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 23:13:45,374 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;@61a940ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 23:13:45,374 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-16 23:13:45,378 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 23:13:45,378 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-11-16 23:13:45,378 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 23:13:45,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:45,378 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] [2024-11-16 23:13:45,379 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-16 23:13:45,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:45,379 INFO L85 PathProgramCache]: Analyzing trace with hash 754992894, now seen corresponding path program 1 times [2024-11-16 23:13:45,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:45,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821657008] [2024-11-16 23:13:45,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:45,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:45,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:13:45,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:45,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821657008] [2024-11-16 23:13:45,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821657008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:45,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:45,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:13:45,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645961710] [2024-11-16 23:13:45,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:45,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:13:45,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:45,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:13:45,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:13:45,863 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 285 [2024-11-16 23:13:45,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 285 transitions, 588 flow. Second operand has 6 states, 6 states have (on average 228.5) internal successors, (1371), 6 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:45,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:45,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 285 [2024-11-16 23:13:45,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:47,090 INFO L124 PetriNetUnfolderBase]: 2123/8224 cut-off events. [2024-11-16 23:13:47,090 INFO L125 PetriNetUnfolderBase]: For 622/622 co-relation queries the response was YES. [2024-11-16 23:13:47,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11218 conditions, 8224 events. 2123/8224 cut-off events. For 622/622 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 88417 event pairs, 1368 based on Foata normal form. 2529/9372 useless extension candidates. Maximal degree in co-relation 1914. Up to 2632 conditions per place. [2024-11-16 23:13:47,193 INFO L140 encePairwiseOnDemand]: 264/285 looper letters, 33 selfloop transitions, 5 changer transitions 0/260 dead transitions. [2024-11-16 23:13:47,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 260 transitions, 614 flow [2024-11-16 23:13:47,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:13:47,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 23:13:47,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1416 transitions. [2024-11-16 23:13:47,199 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8280701754385965 [2024-11-16 23:13:47,199 INFO L175 Difference]: Start difference. First operand has 265 places, 285 transitions, 588 flow. Second operand 6 states and 1416 transitions. [2024-11-16 23:13:47,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 260 transitions, 614 flow [2024-11-16 23:13:47,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 260 transitions, 612 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-16 23:13:47,206 INFO L231 Difference]: Finished difference. Result has 259 places, 260 transitions, 546 flow [2024-11-16 23:13:47,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=546, PETRI_PLACES=259, PETRI_TRANSITIONS=260} [2024-11-16 23:13:47,207 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, -6 predicate places. [2024-11-16 23:13:47,208 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 260 transitions, 546 flow [2024-11-16 23:13:47,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 228.5) internal successors, (1371), 6 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:47,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:47,209 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:47,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 23:13:47,211 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-16 23:13:47,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:47,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1618021393, now seen corresponding path program 1 times [2024-11-16 23:13:47,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:47,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912829351] [2024-11-16 23:13:47,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:47,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:47,253 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 23:13:47,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:47,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912829351] [2024-11-16 23:13:47,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912829351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:47,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:47,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 23:13:47,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208965075] [2024-11-16 23:13:47,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:47,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 23:13:47,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:47,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 23:13:47,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 23:13:47,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 285 [2024-11-16 23:13:47,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 260 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:47,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:47,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 285 [2024-11-16 23:13:47,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:47,717 INFO L124 PetriNetUnfolderBase]: 345/2692 cut-off events. [2024-11-16 23:13:47,717 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-11-16 23:13:47,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3181 conditions, 2692 events. 345/2692 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 22887 event pairs, 220 based on Foata normal form. 1/2376 useless extension candidates. Maximal degree in co-relation 3116. Up to 381 conditions per place. [2024-11-16 23:13:47,745 INFO L140 encePairwiseOnDemand]: 282/285 looper letters, 19 selfloop transitions, 2 changer transitions 0/261 dead transitions. [2024-11-16 23:13:47,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 261 transitions, 592 flow [2024-11-16 23:13:47,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 23:13:47,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 23:13:47,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 760 transitions. [2024-11-16 23:13:47,748 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2024-11-16 23:13:47,748 INFO L175 Difference]: Start difference. First operand has 259 places, 260 transitions, 546 flow. Second operand 3 states and 760 transitions. [2024-11-16 23:13:47,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 261 transitions, 592 flow [2024-11-16 23:13:47,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 261 transitions, 580 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-16 23:13:47,753 INFO L231 Difference]: Finished difference. Result has 257 places, 261 transitions, 548 flow [2024-11-16 23:13:47,753 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=548, PETRI_PLACES=257, PETRI_TRANSITIONS=261} [2024-11-16 23:13:47,754 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, -8 predicate places. [2024-11-16 23:13:47,754 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 261 transitions, 548 flow [2024-11-16 23:13:47,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:47,755 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:47,755 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:47,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 23:13:47,755 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-16 23:13:47,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:47,756 INFO L85 PathProgramCache]: Analyzing trace with hash 2117167042, now seen corresponding path program 1 times [2024-11-16 23:13:47,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:47,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879192987] [2024-11-16 23:13:47,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:47,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 23:13:47,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:47,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879192987] [2024-11-16 23:13:47,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879192987] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:13:47,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989057032] [2024-11-16 23:13:47,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:47,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:47,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:13:47,819 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:13:47,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 23:13:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:47,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 23:13:47,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:13:47,955 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 23:13:47,956 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:13:48,001 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 23:13:48,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989057032] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:13:48,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:13:48,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-16 23:13:48,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250349389] [2024-11-16 23:13:48,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:13:48,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 23:13:48,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:48,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 23:13:48,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-16 23:13:48,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 285 [2024-11-16 23:13:48,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 261 transitions, 548 flow. Second operand has 10 states, 10 states have (on average 245.1) internal successors, (2451), 10 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:48,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:48,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 285 [2024-11-16 23:13:48,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:48,582 INFO L124 PetriNetUnfolderBase]: 345/2709 cut-off events. [2024-11-16 23:13:48,582 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2024-11-16 23:13:48,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3206 conditions, 2709 events. 345/2709 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 22851 event pairs, 220 based on Foata normal form. 2/2394 useless extension candidates. Maximal degree in co-relation 3153. Up to 381 conditions per place. [2024-11-16 23:13:48,603 INFO L140 encePairwiseOnDemand]: 279/285 looper letters, 23 selfloop transitions, 9 changer transitions 0/269 dead transitions. [2024-11-16 23:13:48,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 269 transitions, 630 flow [2024-11-16 23:13:48,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 23:13:48,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-16 23:13:48,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2221 transitions. [2024-11-16 23:13:48,610 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8658869395711501 [2024-11-16 23:13:48,610 INFO L175 Difference]: Start difference. First operand has 257 places, 261 transitions, 548 flow. Second operand 9 states and 2221 transitions. [2024-11-16 23:13:48,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 269 transitions, 630 flow [2024-11-16 23:13:48,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 269 transitions, 628 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 23:13:48,616 INFO L231 Difference]: Finished difference. Result has 267 places, 267 transitions, 596 flow [2024-11-16 23:13:48,617 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=596, PETRI_PLACES=267, PETRI_TRANSITIONS=267} [2024-11-16 23:13:48,617 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, 2 predicate places. [2024-11-16 23:13:48,617 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 267 transitions, 596 flow [2024-11-16 23:13:48,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 245.1) internal successors, (2451), 10 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:48,619 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:48,619 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:48,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 23:13:48,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-16 23:13:48,820 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-16 23:13:48,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:48,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1616784924, now seen corresponding path program 2 times [2024-11-16 23:13:48,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:48,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753602374] [2024-11-16 23:13:48,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:48,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:48,969 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 23:13:48,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:48,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753602374] [2024-11-16 23:13:48,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753602374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:13:48,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567726692] [2024-11-16 23:13:48,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 23:13:48,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:48,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:13:48,972 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:13:48,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 23:13:49,092 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 23:13:49,093 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 23:13:49,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 23:13:49,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:13:49,164 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 23:13:49,164 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:13:49,270 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 23:13:49,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567726692] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:13:49,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:13:49,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-16 23:13:49,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050549530] [2024-11-16 23:13:49,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:13:49,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 23:13:49,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:49,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 23:13:49,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-16 23:13:49,356 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 285 [2024-11-16 23:13:49,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 267 transitions, 596 flow. Second operand has 15 states, 15 states have (on average 245.2) internal successors, (3678), 15 states have internal predecessors, (3678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:49,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:49,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 285 [2024-11-16 23:13:49,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:50,022 INFO L124 PetriNetUnfolderBase]: 345/2751 cut-off events. [2024-11-16 23:13:50,023 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2024-11-16 23:13:50,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3302 conditions, 2751 events. 345/2751 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 22851 event pairs, 220 based on Foata normal form. 3/2437 useless extension candidates. Maximal degree in co-relation 3113. Up to 381 conditions per place. [2024-11-16 23:13:50,057 INFO L140 encePairwiseOnDemand]: 279/285 looper letters, 26 selfloop transitions, 18 changer transitions 0/281 dead transitions. [2024-11-16 23:13:50,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 281 transitions, 758 flow [2024-11-16 23:13:50,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 23:13:50,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-16 23:13:50,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4421 transitions. [2024-11-16 23:13:50,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8617933723196881 [2024-11-16 23:13:50,069 INFO L175 Difference]: Start difference. First operand has 267 places, 267 transitions, 596 flow. Second operand 18 states and 4421 transitions. [2024-11-16 23:13:50,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 281 transitions, 758 flow [2024-11-16 23:13:50,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 281 transitions, 746 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-16 23:13:50,076 INFO L231 Difference]: Finished difference. Result has 287 places, 277 transitions, 696 flow [2024-11-16 23:13:50,076 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=696, PETRI_PLACES=287, PETRI_TRANSITIONS=277} [2024-11-16 23:13:50,077 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, 22 predicate places. [2024-11-16 23:13:50,078 INFO L471 AbstractCegarLoop]: Abstraction has has 287 places, 277 transitions, 696 flow [2024-11-16 23:13:50,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 245.2) internal successors, (3678), 15 states have internal predecessors, (3678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:50,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:50,080 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:50,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 23:13:50,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:50,280 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-16 23:13:50,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:50,281 INFO L85 PathProgramCache]: Analyzing trace with hash 838508535, now seen corresponding path program 3 times [2024-11-16 23:13:50,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:50,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850402271] [2024-11-16 23:13:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:50,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:13:50,325 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 23:13:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:13:50,370 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 23:13:50,371 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 23:13:50,371 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-16 23:13:50,372 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-11-16 23:13:50,372 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-11-16 23:13:50,372 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-11-16 23:13:50,372 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-11-16 23:13:50,372 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-11-16 23:13:50,372 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-11-16 23:13:50,372 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-11-16 23:13:50,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-11-16 23:13:50,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-11-16 23:13:50,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-11-16 23:13:50,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-11-16 23:13:50,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-11-16 23:13:50,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-11-16 23:13:50,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-11-16 23:13:50,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-11-16 23:13:50,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-11-16 23:13:50,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-11-16 23:13:50,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 23:13:50,374 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-16 23:13:50,375 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-16 23:13:50,375 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-16 23:13:50,431 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 23:13:50,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 335 places, 361 transitions, 750 flow [2024-11-16 23:13:50,529 INFO L124 PetriNetUnfolderBase]: 39/407 cut-off events. [2024-11-16 23:13:50,529 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-16 23:13:50,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 407 events. 39/407 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1413 event pairs, 0 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 327. Up to 10 conditions per place. [2024-11-16 23:13:50,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 335 places, 361 transitions, 750 flow [2024-11-16 23:13:50,537 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 335 places, 361 transitions, 750 flow [2024-11-16 23:13:50,539 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 23:13:50,539 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;@61a940ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 23:13:50,539 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-16 23:13:50,543 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 23:13:50,543 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-11-16 23:13:50,543 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 23:13:50,543 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:50,543 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] [2024-11-16 23:13:50,543 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-16 23:13:50,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:50,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1719276738, now seen corresponding path program 1 times [2024-11-16 23:13:50,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:50,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295945065] [2024-11-16 23:13:50,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:50,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:50,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:13:50,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:50,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295945065] [2024-11-16 23:13:50,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295945065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:50,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:50,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:13:50,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549690342] [2024-11-16 23:13:50,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:50,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:13:50,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:50,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:13:50,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:13:50,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 361 [2024-11-16 23:13:50,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 361 transitions, 750 flow. Second operand has 6 states, 6 states have (on average 290.5) internal successors, (1743), 6 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:50,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:50,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 361 [2024-11-16 23:13:50,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:14:03,579 INFO L124 PetriNetUnfolderBase]: 27452/81721 cut-off events. [2024-11-16 23:14:03,580 INFO L125 PetriNetUnfolderBase]: For 9280/9280 co-relation queries the response was YES. [2024-11-16 23:14:04,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117758 conditions, 81721 events. 27452/81721 cut-off events. For 9280/9280 co-relation queries the response was YES. Maximal size of possible extension queue 3014. Compared 1151629 event pairs, 18864 based on Foata normal form. 25081/92425 useless extension candidates. Maximal degree in co-relation 11253. Up to 32029 conditions per place. [2024-11-16 23:14:04,822 INFO L140 encePairwiseOnDemand]: 336/361 looper letters, 42 selfloop transitions, 5 changer transitions 0/330 dead transitions. [2024-11-16 23:14:04,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 330 transitions, 782 flow [2024-11-16 23:14:04,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:14:04,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 23:14:04,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1801 transitions. [2024-11-16 23:14:04,826 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8314866112650047 [2024-11-16 23:14:04,827 INFO L175 Difference]: Start difference. First operand has 335 places, 361 transitions, 750 flow. Second operand 6 states and 1801 transitions. [2024-11-16 23:14:04,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 330 transitions, 782 flow [2024-11-16 23:14:04,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 330 transitions, 776 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-16 23:14:04,839 INFO L231 Difference]: Finished difference. Result has 327 places, 330 transitions, 692 flow [2024-11-16 23:14:04,839 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=692, PETRI_PLACES=327, PETRI_TRANSITIONS=330} [2024-11-16 23:14:04,841 INFO L277 CegarLoopForPetriNet]: 335 programPoint places, -8 predicate places. [2024-11-16 23:14:04,841 INFO L471 AbstractCegarLoop]: Abstraction has has 327 places, 330 transitions, 692 flow [2024-11-16 23:14:04,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 290.5) internal successors, (1743), 6 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:14:04,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:14:04,842 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:14:04,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 23:14:04,842 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-16 23:14:04,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:14:04,845 INFO L85 PathProgramCache]: Analyzing trace with hash 798276025, now seen corresponding path program 1 times [2024-11-16 23:14:04,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:14:04,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007393112] [2024-11-16 23:14:04,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:14:04,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:14:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:14:04,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:14:04,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:14:04,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007393112] [2024-11-16 23:14:04,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007393112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:14:04,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:14:04,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 23:14:04,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372278179] [2024-11-16 23:14:04,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:14:04,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 23:14:04,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:14:04,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 23:14:04,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 23:14:04,910 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 361 [2024-11-16 23:14:04,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 330 transitions, 692 flow. Second operand has 3 states, 3 states have (on average 314.0) internal successors, (942), 3 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:14:04,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:14:04,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 361 [2024-11-16 23:14:04,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:14:07,100 INFO L124 PetriNetUnfolderBase]: 2345/13917 cut-off events. [2024-11-16 23:14:07,100 INFO L125 PetriNetUnfolderBase]: For 1218/1218 co-relation queries the response was YES. [2024-11-16 23:14:07,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16907 conditions, 13917 events. 2345/13917 cut-off events. For 1218/1218 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 167763 event pairs, 1720 based on Foata normal form. 1/12321 useless extension candidates. Maximal degree in co-relation 16841. Up to 2506 conditions per place. [2024-11-16 23:14:07,259 INFO L140 encePairwiseOnDemand]: 358/361 looper letters, 24 selfloop transitions, 2 changer transitions 0/331 dead transitions. [2024-11-16 23:14:07,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 331 transitions, 748 flow [2024-11-16 23:14:07,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 23:14:07,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 23:14:07,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 963 transitions. [2024-11-16 23:14:07,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.889196675900277 [2024-11-16 23:14:07,261 INFO L175 Difference]: Start difference. First operand has 327 places, 330 transitions, 692 flow. Second operand 3 states and 963 transitions. [2024-11-16 23:14:07,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 331 transitions, 748 flow [2024-11-16 23:14:07,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 331 transitions, 736 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-16 23:14:07,269 INFO L231 Difference]: Finished difference. Result has 325 places, 331 transitions, 694 flow [2024-11-16 23:14:07,270 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=694, PETRI_PLACES=325, PETRI_TRANSITIONS=331} [2024-11-16 23:14:07,271 INFO L277 CegarLoopForPetriNet]: 335 programPoint places, -10 predicate places. [2024-11-16 23:14:07,271 INFO L471 AbstractCegarLoop]: Abstraction has has 325 places, 331 transitions, 694 flow [2024-11-16 23:14:07,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 314.0) internal successors, (942), 3 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:14:07,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:14:07,272 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1] [2024-11-16 23:14:07,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 23:14:07,272 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-16 23:14:07,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:14:07,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1880205942, now seen corresponding path program 1 times [2024-11-16 23:14:07,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:14:07,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889125064] [2024-11-16 23:14:07,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:14:07,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:14:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:14:07,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:14:07,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:14:07,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889125064] [2024-11-16 23:14:07,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889125064] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:14:07,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319852730] [2024-11-16 23:14:07,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:14:07,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:14:07,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:14:07,333 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:14:07,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 23:14:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:14:07,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 23:14:07,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:14:07,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 23:14:07,469 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 23:14:07,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319852730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:14:07,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 23:14:07,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-16 23:14:07,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038937025] [2024-11-16 23:14:07,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:14:07,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 23:14:07,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:14:07,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 23:14:07,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:14:07,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 361 [2024-11-16 23:14:07,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 331 transitions, 694 flow. Second operand has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:14:07,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:14:07,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 361 [2024-11-16 23:14:07,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:14:11,590 INFO L124 PetriNetUnfolderBase]: 5542/26311 cut-off events. [2024-11-16 23:14:11,590 INFO L125 PetriNetUnfolderBase]: For 1994/1994 co-relation queries the response was YES. [2024-11-16 23:14:11,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33815 conditions, 26311 events. 5542/26311 cut-off events. For 1994/1994 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 343011 event pairs, 3970 based on Foata normal form. 156/23107 useless extension candidates. Maximal degree in co-relation 33766. Up to 5843 conditions per place. [2024-11-16 23:14:11,824 INFO L140 encePairwiseOnDemand]: 358/361 looper letters, 41 selfloop transitions, 2 changer transitions 0/347 dead transitions. [2024-11-16 23:14:11,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 347 transitions, 827 flow [2024-11-16 23:14:11,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 23:14:11,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 23:14:11,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 977 transitions. [2024-11-16 23:14:11,827 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9021237303785781 [2024-11-16 23:14:11,827 INFO L175 Difference]: Start difference. First operand has 325 places, 331 transitions, 694 flow. Second operand 3 states and 977 transitions. [2024-11-16 23:14:11,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 347 transitions, 827 flow [2024-11-16 23:14:11,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 347 transitions, 825 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 23:14:11,839 INFO L231 Difference]: Finished difference. Result has 327 places, 332 transitions, 704 flow [2024-11-16 23:14:11,840 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=704, PETRI_PLACES=327, PETRI_TRANSITIONS=332} [2024-11-16 23:14:11,840 INFO L277 CegarLoopForPetriNet]: 335 programPoint places, -8 predicate places. [2024-11-16 23:14:11,840 INFO L471 AbstractCegarLoop]: Abstraction has has 327 places, 332 transitions, 704 flow [2024-11-16 23:14:11,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:14:11,841 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:14:11,841 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:14:11,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 23:14:12,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:14:12,043 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-16 23:14:12,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:14:12,043 INFO L85 PathProgramCache]: Analyzing trace with hash -2074516561, now seen corresponding path program 1 times [2024-11-16 23:14:12,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:14:12,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384983958] [2024-11-16 23:14:12,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:14:12,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:14:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:14:12,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:14:12,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:14:12,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384983958] [2024-11-16 23:14:12,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384983958] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:14:12,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237878790] [2024-11-16 23:14:12,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:14:12,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:14:12,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:14:12,108 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:14:12,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 23:14:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:14:12,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 23:14:12,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:14:12,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:14:12,263 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:14:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:14:12,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237878790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:14:12,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:14:12,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-16 23:14:12,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332780253] [2024-11-16 23:14:12,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:14:12,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 23:14:12,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:14:12,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 23:14:12,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-16 23:14:12,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 361 [2024-11-16 23:14:12,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 332 transitions, 704 flow. Second operand has 10 states, 10 states have (on average 310.9) internal successors, (3109), 10 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:14:12,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:14:12,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 361 [2024-11-16 23:14:12,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:14:14,783 INFO L124 PetriNetUnfolderBase]: 2346/13954 cut-off events. [2024-11-16 23:14:14,784 INFO L125 PetriNetUnfolderBase]: For 1220/1220 co-relation queries the response was YES. [2024-11-16 23:14:14,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16957 conditions, 13954 events. 2346/13954 cut-off events. For 1220/1220 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 168179 event pairs, 1720 based on Foata normal form. 2/12354 useless extension candidates. Maximal degree in co-relation 16857. Up to 2506 conditions per place. [2024-11-16 23:14:14,934 INFO L140 encePairwiseOnDemand]: 355/361 looper letters, 28 selfloop transitions, 9 changer transitions 0/340 dead transitions. [2024-11-16 23:14:14,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 340 transitions, 796 flow [2024-11-16 23:14:14,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 23:14:14,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-16 23:14:14,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2820 transitions. [2024-11-16 23:14:14,939 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8679593721144968 [2024-11-16 23:14:14,940 INFO L175 Difference]: Start difference. First operand has 327 places, 332 transitions, 704 flow. Second operand 9 states and 2820 transitions. [2024-11-16 23:14:14,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 340 transitions, 796 flow [2024-11-16 23:14:14,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 340 transitions, 794 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 23:14:14,951 INFO L231 Difference]: Finished difference. Result has 337 places, 338 transitions, 752 flow [2024-11-16 23:14:14,952 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=752, PETRI_PLACES=337, PETRI_TRANSITIONS=338} [2024-11-16 23:14:14,952 INFO L277 CegarLoopForPetriNet]: 335 programPoint places, 2 predicate places. [2024-11-16 23:14:14,953 INFO L471 AbstractCegarLoop]: Abstraction has has 337 places, 338 transitions, 752 flow [2024-11-16 23:14:14,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 310.9) internal successors, (3109), 10 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:14:14,954 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:14:14,955 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:14:14,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-16 23:14:15,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:14:15,159 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-16 23:14:15,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:14:15,160 INFO L85 PathProgramCache]: Analyzing trace with hash -928049775, now seen corresponding path program 2 times [2024-11-16 23:14:15,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:14:15,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484658781] [2024-11-16 23:14:15,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:14:15,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:14:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:14:15,371 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:14:15,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:14:15,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484658781] [2024-11-16 23:14:15,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484658781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:14:15,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789310405] [2024-11-16 23:14:15,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 23:14:15,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:14:15,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:14:15,375 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:14:15,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 23:14:15,528 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 23:14:15,528 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 23:14:15,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-16 23:14:15,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:14:15,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-16 23:14:15,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-16 23:14:15,633 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 23:14:15,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-11-16 23:14:15,682 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 23:14:15,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-11-16 23:14:15,718 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-16 23:14:15,719 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 23:14:15,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789310405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:14:15,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 23:14:15,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-11-16 23:14:15,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2241204] [2024-11-16 23:14:15,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:14:15,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:14:15,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:14:15,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:14:15,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-16 23:14:15,996 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 361 [2024-11-16 23:14:15,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 338 transitions, 752 flow. Second operand has 6 states, 6 states have (on average 304.3333333333333) internal successors, (1826), 6 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:14:15,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:14:15,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 361 [2024-11-16 23:14:15,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:14:22,044 INFO L124 PetriNetUnfolderBase]: 9055/36444 cut-off events. [2024-11-16 23:14:22,044 INFO L125 PetriNetUnfolderBase]: For 3835/3835 co-relation queries the response was YES. [2024-11-16 23:14:22,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49445 conditions, 36444 events. 9055/36444 cut-off events. For 3835/3835 co-relation queries the response was YES. Maximal size of possible extension queue 910. Compared 482453 event pairs, 3595 based on Foata normal form. 0/32520 useless extension candidates. Maximal degree in co-relation 49331. Up to 5325 conditions per place. [2024-11-16 23:14:22,571 INFO L140 encePairwiseOnDemand]: 355/361 looper letters, 90 selfloop transitions, 6 changer transitions 0/397 dead transitions. [2024-11-16 23:14:22,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 397 transitions, 1122 flow [2024-11-16 23:14:22,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:14:22,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 23:14:22,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1908 transitions. [2024-11-16 23:14:22,574 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8808864265927978 [2024-11-16 23:14:22,574 INFO L175 Difference]: Start difference. First operand has 337 places, 338 transitions, 752 flow. Second operand 6 states and 1908 transitions. [2024-11-16 23:14:22,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 397 transitions, 1122 flow [2024-11-16 23:14:22,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 397 transitions, 1116 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-16 23:14:22,587 INFO L231 Difference]: Finished difference. Result has 340 places, 337 transitions, 756 flow [2024-11-16 23:14:22,587 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=756, PETRI_PLACES=340, PETRI_TRANSITIONS=337} [2024-11-16 23:14:22,587 INFO L277 CegarLoopForPetriNet]: 335 programPoint places, 5 predicate places. [2024-11-16 23:14:22,588 INFO L471 AbstractCegarLoop]: Abstraction has has 340 places, 337 transitions, 756 flow [2024-11-16 23:14:22,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 304.3333333333333) internal successors, (1826), 6 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:14:22,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:14:22,589 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:14:22,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 23:14:22,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:14:22,789 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-16 23:14:22,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:14:22,790 INFO L85 PathProgramCache]: Analyzing trace with hash 709343504, now seen corresponding path program 1 times [2024-11-16 23:14:22,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:14:22,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846227793] [2024-11-16 23:14:22,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:14:22,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:14:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:14:23,217 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 23:14:23,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:14:23,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846227793] [2024-11-16 23:14:23,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846227793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:14:23,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336208137] [2024-11-16 23:14:23,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:14:23,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:14:23,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:14:23,220 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:14:23,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 23:14:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:14:23,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 23:14:23,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:14:23,445 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 23:14:23,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:14:23,556 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 23:14:23,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336208137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:14:23,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:14:23,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-16 23:14:23,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516309975] [2024-11-16 23:14:23,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:14:23,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 23:14:23,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:14:23,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 23:14:23,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-16 23:14:23,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 361 [2024-11-16 23:14:23,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 337 transitions, 756 flow. Second operand has 15 states, 15 states have (on average 311.26666666666665) internal successors, (4669), 15 states have internal predecessors, (4669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:14:23,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:14:23,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 361 [2024-11-16 23:14:23,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:14:26,179 INFO L124 PetriNetUnfolderBase]: 2345/13996 cut-off events. [2024-11-16 23:14:26,179 INFO L125 PetriNetUnfolderBase]: For 1264/1264 co-relation queries the response was YES. [2024-11-16 23:14:26,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17058 conditions, 13996 events. 2345/13996 cut-off events. For 1264/1264 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 167850 event pairs, 1720 based on Foata normal form. 3/12399 useless extension candidates. Maximal degree in co-relation 16872. Up to 2506 conditions per place. [2024-11-16 23:14:26,297 INFO L140 encePairwiseOnDemand]: 355/361 looper letters, 31 selfloop transitions, 18 changer transitions 0/351 dead transitions. [2024-11-16 23:14:26,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 351 transitions, 922 flow [2024-11-16 23:14:26,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 23:14:26,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-16 23:14:26,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5614 transitions. [2024-11-16 23:14:26,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8639581409664512 [2024-11-16 23:14:26,303 INFO L175 Difference]: Start difference. First operand has 340 places, 337 transitions, 756 flow. Second operand 18 states and 5614 transitions. [2024-11-16 23:14:26,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 351 transitions, 922 flow [2024-11-16 23:14:26,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 351 transitions, 910 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-16 23:14:26,313 INFO L231 Difference]: Finished difference. Result has 356 places, 347 transitions, 850 flow [2024-11-16 23:14:26,314 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=850, PETRI_PLACES=356, PETRI_TRANSITIONS=347} [2024-11-16 23:14:26,314 INFO L277 CegarLoopForPetriNet]: 335 programPoint places, 21 predicate places. [2024-11-16 23:14:26,314 INFO L471 AbstractCegarLoop]: Abstraction has has 356 places, 347 transitions, 850 flow [2024-11-16 23:14:26,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 311.26666666666665) internal successors, (4669), 15 states have internal predecessors, (4669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:14:26,317 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:14:26,317 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:14:26,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 23:14:26,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-16 23:14:26,518 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-16 23:14:26,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:14:26,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1665238147, now seen corresponding path program 2 times [2024-11-16 23:14:26,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:14:26,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592070209] [2024-11-16 23:14:26,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:14:26,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:14:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:14:26,557 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 23:14:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:14:26,595 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 23:14:26,595 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 23:14:26,595 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-11-16 23:14:26,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-11-16 23:14:26,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-11-16 23:14:26,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-11-16 23:14:26,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-11-16 23:14:26,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-11-16 23:14:26,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-11-16 23:14:26,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-11-16 23:14:26,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-11-16 23:14:26,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-11-16 23:14:26,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-11-16 23:14:26,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-11-16 23:14:26,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-11-16 23:14:26,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-11-16 23:14:26,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-11-16 23:14:26,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-11-16 23:14:26,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-11-16 23:14:26,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-11-16 23:14:26,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-11-16 23:14:26,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-11-16 23:14:26,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-11-16 23:14:26,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-11-16 23:14:26,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-16 23:14:26,599 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-11-16 23:14:26,599 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-16 23:14:26,599 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-16 23:14:26,651 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 23:14:26,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 405 places, 437 transitions, 914 flow [2024-11-16 23:14:26,727 INFO L124 PetriNetUnfolderBase]: 48/495 cut-off events. [2024-11-16 23:14:26,727 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-16 23:14:26,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 495 events. 48/495 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1867 event pairs, 0 based on Foata normal form. 0/420 useless extension candidates. Maximal degree in co-relation 420. Up to 12 conditions per place. [2024-11-16 23:14:26,736 INFO L82 GeneralOperation]: Start removeDead. Operand has 405 places, 437 transitions, 914 flow [2024-11-16 23:14:26,740 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 405 places, 437 transitions, 914 flow [2024-11-16 23:14:26,742 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 23:14:26,742 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;@61a940ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 23:14:26,742 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-16 23:14:26,745 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 23:14:26,745 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-11-16 23:14:26,746 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 23:14:26,746 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:14:26,746 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] [2024-11-16 23:14:26,746 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-11-16 23:14:26,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:14:26,747 INFO L85 PathProgramCache]: Analyzing trace with hash 936827518, now seen corresponding path program 1 times [2024-11-16 23:14:26,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:14:26,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582543105] [2024-11-16 23:14:26,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:14:26,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:14:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:14:26,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:14:26,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:14:26,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582543105] [2024-11-16 23:14:26,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582543105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:14:26,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:14:26,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:14:26,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705553487] [2024-11-16 23:14:26,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:14:26,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:14:26,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:14:26,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:14:26,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:14:27,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 437 [2024-11-16 23:14:27,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 437 transitions, 914 flow. Second operand has 6 states, 6 states have (on average 352.5) internal successors, (2115), 6 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:14:27,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:14:27,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 437 [2024-11-16 23:14:27,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand