./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 991dbc557cd31e595edd52677120ba8d8af2b607a4ab228e6500c72ebba22de0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 16:47:39,950 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 16:47:40,016 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-11 16:47:40,023 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 16:47:40,024 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 16:47:40,052 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 16:47:40,053 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 16:47:40,053 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 16:47:40,054 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 16:47:40,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 16:47:40,057 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 16:47:40,057 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 16:47:40,057 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 16:47:40,057 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 16:47:40,058 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 16:47:40,058 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 16:47:40,058 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 16:47:40,059 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 16:47:40,059 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 16:47:40,063 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 16:47:40,063 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 16:47:40,064 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 16:47:40,064 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-11 16:47:40,064 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 16:47:40,064 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 16:47:40,065 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 16:47:40,065 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 16:47:40,065 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 16:47:40,065 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 16:47:40,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 16:47:40,066 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 16:47:40,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:47:40,066 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 16:47:40,067 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 16:47:40,067 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 16:47:40,067 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 16:47:40,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 16:47:40,069 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 16:47:40,069 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 16:47:40,070 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 16:47:40,070 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 16:47:40,071 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 991dbc557cd31e595edd52677120ba8d8af2b607a4ab228e6500c72ebba22de0 [2024-10-11 16:47:40,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 16:47:40,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 16:47:40,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 16:47:40,330 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 16:47:40,330 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 16:47:40,332 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i [2024-10-11 16:47:41,769 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 16:47:42,083 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 16:47:42,084 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i [2024-10-11 16:47:42,101 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d5ffac66c/7358fcbf281a4779997d0934d3650cfc/FLAGc177fdd9c [2024-10-11 16:47:42,117 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d5ffac66c/7358fcbf281a4779997d0934d3650cfc [2024-10-11 16:47:42,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 16:47:42,121 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 16:47:42,122 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 16:47:42,122 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 16:47:42,128 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 16:47:42,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:47:42" (1/1) ... [2024-10-11 16:47:42,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b612e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:42, skipping insertion in model container [2024-10-11 16:47:42,132 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:47:42" (1/1) ... [2024-10-11 16:47:42,175 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 16:47:42,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:47:42,600 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 16:47:42,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:47:42,698 INFO L204 MainTranslator]: Completed translation [2024-10-11 16:47:42,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:42 WrapperNode [2024-10-11 16:47:42,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 16:47:42,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 16:47:42,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 16:47:42,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 16:47:42,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:42" (1/1) ... [2024-10-11 16:47:42,727 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:42" (1/1) ... [2024-10-11 16:47:42,759 INFO L138 Inliner]: procedures = 164, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 117 [2024-10-11 16:47:42,760 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 16:47:42,761 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 16:47:42,761 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 16:47:42,761 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 16:47:42,771 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:42" (1/1) ... [2024-10-11 16:47:42,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:42" (1/1) ... [2024-10-11 16:47:42,775 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:42" (1/1) ... [2024-10-11 16:47:42,777 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:42" (1/1) ... [2024-10-11 16:47:42,787 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:42" (1/1) ... [2024-10-11 16:47:42,793 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:42" (1/1) ... [2024-10-11 16:47:42,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:42" (1/1) ... [2024-10-11 16:47:42,799 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:42" (1/1) ... [2024-10-11 16:47:42,805 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 16:47:42,807 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 16:47:42,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 16:47:42,810 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 16:47:42,811 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:42" (1/1) ... [2024-10-11 16:47:42,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:47:42,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:42,850 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 16:47:42,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 16:47:42,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-11 16:47:42,906 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-11 16:47:42,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-11 16:47:42,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-11 16:47:42,907 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 16:47:42,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 16:47:42,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-11 16:47:42,907 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 16:47:42,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 16:47:42,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 16:47:42,910 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 16:47:43,055 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 16:47:43,057 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 16:47:43,317 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 16:47:43,319 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 16:47:43,356 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 16:47:43,357 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 16:47:43,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:47:43 BoogieIcfgContainer [2024-10-11 16:47:43,357 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 16:47:43,361 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 16:47:43,361 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 16:47:43,364 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 16:47:43,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:47:42" (1/3) ... [2024-10-11 16:47:43,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dad5a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:47:43, skipping insertion in model container [2024-10-11 16:47:43,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:42" (2/3) ... [2024-10-11 16:47:43,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dad5a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:47:43, skipping insertion in model container [2024-10-11 16:47:43,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:47:43" (3/3) ... [2024-10-11 16:47:43,368 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-pthread.i [2024-10-11 16:47:43,386 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 16:47:43,386 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-10-11 16:47:43,387 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 16:47:43,481 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:47:43,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 130 transitions, 264 flow [2024-10-11 16:47:43,595 INFO L124 PetriNetUnfolderBase]: 12/139 cut-off events. [2024-10-11 16:47:43,596 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:47:43,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 139 events. 12/139 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 183 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 85. Up to 4 conditions per place. [2024-10-11 16:47:43,603 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 130 transitions, 264 flow [2024-10-11 16:47:43,608 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 130 transitions, 264 flow [2024-10-11 16:47:43,621 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:47:43,629 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;@58a6cac5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:47:43,630 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-11 16:47:43,642 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:47:43,642 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-11 16:47:43,643 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:47:43,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:43,644 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:43,644 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-11 16:47:43,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:43,653 INFO L85 PathProgramCache]: Analyzing trace with hash 221156214, now seen corresponding path program 1 times [2024-10-11 16:47:43,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:43,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314913764] [2024-10-11 16:47:43,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:43,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:44,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:47:44,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:44,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314913764] [2024-10-11 16:47:44,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314913764] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:44,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:47:44,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 16:47:44,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098262702] [2024-10-11 16:47:44,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:44,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 16:47:44,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:44,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 16:47:44,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:47:44,755 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 130 [2024-10-11 16:47:44,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 130 transitions, 264 flow. Second operand has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:44,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:44,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 130 [2024-10-11 16:47:44,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:44,863 INFO L124 PetriNetUnfolderBase]: 5/121 cut-off events. [2024-10-11 16:47:44,863 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 16:47:44,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 121 events. 5/121 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 128 event pairs, 0 based on Foata normal form. 15/125 useless extension candidates. Maximal degree in co-relation 82. Up to 16 conditions per place. [2024-10-11 16:47:44,865 INFO L140 encePairwiseOnDemand]: 117/130 looper letters, 15 selfloop transitions, 5 changer transitions 0/117 dead transitions. [2024-10-11 16:47:44,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 117 transitions, 278 flow [2024-10-11 16:47:44,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 16:47:44,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 16:47:44,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 628 transitions. [2024-10-11 16:47:44,885 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8051282051282052 [2024-10-11 16:47:44,888 INFO L175 Difference]: Start difference. First operand has 122 places, 130 transitions, 264 flow. Second operand 6 states and 628 transitions. [2024-10-11 16:47:44,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 117 transitions, 278 flow [2024-10-11 16:47:44,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 117 transitions, 278 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:47:44,898 INFO L231 Difference]: Finished difference. Result has 120 places, 117 transitions, 248 flow [2024-10-11 16:47:44,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=248, PETRI_PLACES=120, PETRI_TRANSITIONS=117} [2024-10-11 16:47:44,906 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -2 predicate places. [2024-10-11 16:47:44,907 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 117 transitions, 248 flow [2024-10-11 16:47:44,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:44,908 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:44,908 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:44,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 16:47:44,909 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-11 16:47:44,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:44,914 INFO L85 PathProgramCache]: Analyzing trace with hash -497310968, now seen corresponding path program 1 times [2024-10-11 16:47:44,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:44,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74741667] [2024-10-11 16:47:44,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:44,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:44,988 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 16:47:44,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:44,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74741667] [2024-10-11 16:47:44,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74741667] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:44,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:47:44,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 16:47:44,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249586863] [2024-10-11 16:47:44,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:44,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:47:44,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:44,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:47:44,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:47:45,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 130 [2024-10-11 16:47:45,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 117 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:45,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:45,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 130 [2024-10-11 16:47:45,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:45,072 INFO L124 PetriNetUnfolderBase]: 5/133 cut-off events. [2024-10-11 16:47:45,072 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 16:47:45,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 133 events. 5/133 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs, 0 based on Foata normal form. 1/124 useless extension candidates. Maximal degree in co-relation 98. Up to 11 conditions per place. [2024-10-11 16:47:45,073 INFO L140 encePairwiseOnDemand]: 127/130 looper letters, 9 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2024-10-11 16:47:45,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 118 transitions, 274 flow [2024-10-11 16:47:45,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:47:45,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:47:45,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2024-10-11 16:47:45,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8846153846153846 [2024-10-11 16:47:45,079 INFO L175 Difference]: Start difference. First operand has 120 places, 117 transitions, 248 flow. Second operand 3 states and 345 transitions. [2024-10-11 16:47:45,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 118 transitions, 274 flow [2024-10-11 16:47:45,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 118 transitions, 262 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 16:47:45,083 INFO L231 Difference]: Finished difference. Result has 118 places, 118 transitions, 250 flow [2024-10-11 16:47:45,083 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=118, PETRI_TRANSITIONS=118} [2024-10-11 16:47:45,084 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -4 predicate places. [2024-10-11 16:47:45,084 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 118 transitions, 250 flow [2024-10-11 16:47:45,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:45,084 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:45,085 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:45,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 16:47:45,085 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-11 16:47:45,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:45,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1275824240, now seen corresponding path program 1 times [2024-10-11 16:47:45,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:45,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046640679] [2024-10-11 16:47:45,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:45,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:45,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 16:47:45,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:45,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046640679] [2024-10-11 16:47:45,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046640679] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:47:45,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385188418] [2024-10-11 16:47:45,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:45,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:45,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:45,211 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:47:45,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 16:47:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:45,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 16:47:45,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:47:45,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 16:47:45,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:47:45,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 16:47:45,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385188418] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:47:45,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:47:45,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 16:47:45,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614185404] [2024-10-11 16:47:45,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:47:45,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 16:47:45,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:45,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 16:47:45,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 16:47:45,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 130 [2024-10-11 16:47:45,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 118 transitions, 250 flow. Second operand has 10 states, 10 states have (on average 109.9) internal successors, (1099), 10 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:45,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:45,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 130 [2024-10-11 16:47:45,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:45,687 INFO L124 PetriNetUnfolderBase]: 5/148 cut-off events. [2024-10-11 16:47:45,687 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 16:47:45,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 148 events. 5/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 98 event pairs, 0 based on Foata normal form. 2/140 useless extension candidates. Maximal degree in co-relation 133. Up to 11 conditions per place. [2024-10-11 16:47:45,688 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 13 selfloop transitions, 9 changer transitions 0/126 dead transitions. [2024-10-11 16:47:45,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 126 transitions, 312 flow [2024-10-11 16:47:45,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 16:47:45,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 16:47:45,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 996 transitions. [2024-10-11 16:47:45,691 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8512820512820513 [2024-10-11 16:47:45,691 INFO L175 Difference]: Start difference. First operand has 118 places, 118 transitions, 250 flow. Second operand 9 states and 996 transitions. [2024-10-11 16:47:45,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 126 transitions, 312 flow [2024-10-11 16:47:45,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 126 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 16:47:45,696 INFO L231 Difference]: Finished difference. Result has 128 places, 124 transitions, 298 flow [2024-10-11 16:47:45,697 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=298, PETRI_PLACES=128, PETRI_TRANSITIONS=124} [2024-10-11 16:47:45,698 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 6 predicate places. [2024-10-11 16:47:45,698 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 298 flow [2024-10-11 16:47:45,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 109.9) internal successors, (1099), 10 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:45,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:45,699 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:45,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 16:47:45,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:45,904 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-11 16:47:45,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:45,905 INFO L85 PathProgramCache]: Analyzing trace with hash -401858704, now seen corresponding path program 2 times [2024-10-11 16:47:45,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:45,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777586500] [2024-10-11 16:47:45,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:45,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:46,095 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 16:47:46,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:46,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777586500] [2024-10-11 16:47:46,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777586500] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:47:46,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892176063] [2024-10-11 16:47:46,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 16:47:46,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:46,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:46,100 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:47:46,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 16:47:46,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 16:47:46,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 16:47:46,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 16:47:46,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:47:46,307 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 16:47:46,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:47:46,453 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 16:47:46,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892176063] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:47:46,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:47:46,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-11 16:47:46,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733539149] [2024-10-11 16:47:46,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:47:46,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 16:47:46,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:46,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 16:47:46,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-11 16:47:46,583 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 130 [2024-10-11 16:47:46,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 298 flow. Second operand has 15 states, 15 states have (on average 110.06666666666666) internal successors, (1651), 15 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:46,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:46,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 130 [2024-10-11 16:47:46,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:46,778 INFO L124 PetriNetUnfolderBase]: 5/187 cut-off events. [2024-10-11 16:47:46,778 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-10-11 16:47:46,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 187 events. 5/187 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 3/180 useless extension candidates. Maximal degree in co-relation 186. Up to 11 conditions per place. [2024-10-11 16:47:46,779 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 16 selfloop transitions, 18 changer transitions 0/138 dead transitions. [2024-10-11 16:47:46,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 138 transitions, 440 flow [2024-10-11 16:47:46,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 16:47:46,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 16:47:46,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1981 transitions. [2024-10-11 16:47:46,784 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8465811965811966 [2024-10-11 16:47:46,784 INFO L175 Difference]: Start difference. First operand has 128 places, 124 transitions, 298 flow. Second operand 18 states and 1981 transitions. [2024-10-11 16:47:46,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 138 transitions, 440 flow [2024-10-11 16:47:46,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 138 transitions, 428 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-11 16:47:46,789 INFO L231 Difference]: Finished difference. Result has 148 places, 134 transitions, 398 flow [2024-10-11 16:47:46,789 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=398, PETRI_PLACES=148, PETRI_TRANSITIONS=134} [2024-10-11 16:47:46,790 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 26 predicate places. [2024-10-11 16:47:46,790 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 134 transitions, 398 flow [2024-10-11 16:47:46,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 110.06666666666666) internal successors, (1651), 15 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:46,791 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:46,792 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:46,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 16:47:46,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:46,993 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-11 16:47:46,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:46,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1053688312, now seen corresponding path program 3 times [2024-10-11 16:47:46,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:46,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159527177] [2024-10-11 16:47:46,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:46,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:47:47,043 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:47:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:47:47,102 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:47:47,102 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:47:47,104 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-10-11 16:47:47,106 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-10-11 16:47:47,106 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-10-11 16:47:47,106 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-10-11 16:47:47,106 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-10-11 16:47:47,107 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-10-11 16:47:47,107 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-10-11 16:47:47,107 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-10-11 16:47:47,107 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-10-11 16:47:47,107 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-10-11 16:47:47,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 16:47:47,108 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-11 16:47:47,111 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:47:47,111 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 16:47:47,151 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:47:47,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 205 transitions, 420 flow [2024-10-11 16:47:47,188 INFO L124 PetriNetUnfolderBase]: 21/225 cut-off events. [2024-10-11 16:47:47,188 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 16:47:47,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 225 events. 21/225 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 522 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 159. Up to 6 conditions per place. [2024-10-11 16:47:47,192 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 205 transitions, 420 flow [2024-10-11 16:47:47,195 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 205 transitions, 420 flow [2024-10-11 16:47:47,196 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:47:47,197 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;@58a6cac5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:47:47,197 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-11 16:47:47,201 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:47:47,201 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-11 16:47:47,201 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:47:47,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:47,201 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:47,201 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-11 16:47:47,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:47,202 INFO L85 PathProgramCache]: Analyzing trace with hash -52521821, now seen corresponding path program 1 times [2024-10-11 16:47:47,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:47,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240014706] [2024-10-11 16:47:47,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:47,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:47,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:47:47,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:47,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240014706] [2024-10-11 16:47:47,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240014706] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:47,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:47:47,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 16:47:47,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840717962] [2024-10-11 16:47:47,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:47,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 16:47:47,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:47,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 16:47:47,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:47:47,638 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 205 [2024-10-11 16:47:47,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 205 transitions, 420 flow. Second operand has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:47,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:47,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 205 [2024-10-11 16:47:47,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:47,783 INFO L124 PetriNetUnfolderBase]: 134/852 cut-off events. [2024-10-11 16:47:47,784 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-10-11 16:47:47,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 852 events. 134/852 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5370 event pairs, 72 based on Foata normal form. 162/886 useless extension candidates. Maximal degree in co-relation 385. Up to 193 conditions per place. [2024-10-11 16:47:47,792 INFO L140 encePairwiseOnDemand]: 188/205 looper letters, 24 selfloop transitions, 5 changer transitions 0/186 dead transitions. [2024-10-11 16:47:47,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 186 transitions, 440 flow [2024-10-11 16:47:47,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 16:47:47,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 16:47:47,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1007 transitions. [2024-10-11 16:47:47,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8186991869918699 [2024-10-11 16:47:47,796 INFO L175 Difference]: Start difference. First operand has 191 places, 205 transitions, 420 flow. Second operand 6 states and 1007 transitions. [2024-10-11 16:47:47,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 186 transitions, 440 flow [2024-10-11 16:47:47,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 186 transitions, 440 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:47:47,803 INFO L231 Difference]: Finished difference. Result has 187 places, 186 transitions, 392 flow [2024-10-11 16:47:47,803 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=392, PETRI_PLACES=187, PETRI_TRANSITIONS=186} [2024-10-11 16:47:47,804 INFO L277 CegarLoopForPetriNet]: 191 programPoint places, -4 predicate places. [2024-10-11 16:47:47,804 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 186 transitions, 392 flow [2024-10-11 16:47:47,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:47,806 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:47,806 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:47,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 16:47:47,807 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-11 16:47:47,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:47,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1085319016, now seen corresponding path program 1 times [2024-10-11 16:47:47,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:47,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179051789] [2024-10-11 16:47:47,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:47,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:47,871 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 16:47:47,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:47,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179051789] [2024-10-11 16:47:47,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179051789] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:47,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:47:47,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 16:47:47,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326087397] [2024-10-11 16:47:47,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:47,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:47:47,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:47,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:47:47,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:47:47,896 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 205 [2024-10-11 16:47:47,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 186 transitions, 392 flow. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:47,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:47,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 205 [2024-10-11 16:47:47,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:47,967 INFO L124 PetriNetUnfolderBase]: 45/532 cut-off events. [2024-10-11 16:47:47,967 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-10-11 16:47:47,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 532 events. 45/532 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2412 event pairs, 20 based on Foata normal form. 1/472 useless extension candidates. Maximal degree in co-relation 557. Up to 56 conditions per place. [2024-10-11 16:47:47,971 INFO L140 encePairwiseOnDemand]: 202/205 looper letters, 14 selfloop transitions, 2 changer transitions 0/187 dead transitions. [2024-10-11 16:47:47,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 187 transitions, 428 flow [2024-10-11 16:47:47,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:47:47,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:47:47,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 545 transitions. [2024-10-11 16:47:47,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8861788617886179 [2024-10-11 16:47:47,973 INFO L175 Difference]: Start difference. First operand has 187 places, 186 transitions, 392 flow. Second operand 3 states and 545 transitions. [2024-10-11 16:47:47,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 187 transitions, 428 flow [2024-10-11 16:47:47,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 187 transitions, 416 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 16:47:47,977 INFO L231 Difference]: Finished difference. Result has 185 places, 187 transitions, 394 flow [2024-10-11 16:47:47,977 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=394, PETRI_PLACES=185, PETRI_TRANSITIONS=187} [2024-10-11 16:47:47,978 INFO L277 CegarLoopForPetriNet]: 191 programPoint places, -6 predicate places. [2024-10-11 16:47:47,978 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 187 transitions, 394 flow [2024-10-11 16:47:47,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:47,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:47,979 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:47,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 16:47:47,979 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-11 16:47:47,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:47,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1945796179, now seen corresponding path program 1 times [2024-10-11 16:47:47,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:47,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857850309] [2024-10-11 16:47:47,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:47,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:48,042 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 16:47:48,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:48,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857850309] [2024-10-11 16:47:48,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857850309] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:47:48,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762084161] [2024-10-11 16:47:48,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:48,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:48,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:48,045 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:47:48,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 16:47:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:48,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 16:47:48,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:47:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 16:47:48,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:47:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 16:47:48,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762084161] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:47:48,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:47:48,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 16:47:48,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011363580] [2024-10-11 16:47:48,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:47:48,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 16:47:48,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:48,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 16:47:48,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 16:47:48,287 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 205 [2024-10-11 16:47:48,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 187 transitions, 394 flow. Second operand has 10 states, 10 states have (on average 175.0) internal successors, (1750), 10 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:48,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:48,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 205 [2024-10-11 16:47:48,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:48,442 INFO L124 PetriNetUnfolderBase]: 45/547 cut-off events. [2024-10-11 16:47:48,443 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-10-11 16:47:48,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 643 conditions, 547 events. 45/547 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2389 event pairs, 20 based on Foata normal form. 2/488 useless extension candidates. Maximal degree in co-relation 592. Up to 56 conditions per place. [2024-10-11 16:47:48,449 INFO L140 encePairwiseOnDemand]: 199/205 looper letters, 18 selfloop transitions, 9 changer transitions 0/195 dead transitions. [2024-10-11 16:47:48,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 195 transitions, 466 flow [2024-10-11 16:47:48,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 16:47:48,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 16:47:48,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1586 transitions. [2024-10-11 16:47:48,454 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8596205962059621 [2024-10-11 16:47:48,454 INFO L175 Difference]: Start difference. First operand has 185 places, 187 transitions, 394 flow. Second operand 9 states and 1586 transitions. [2024-10-11 16:47:48,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 195 transitions, 466 flow [2024-10-11 16:47:48,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 195 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 16:47:48,459 INFO L231 Difference]: Finished difference. Result has 195 places, 193 transitions, 442 flow [2024-10-11 16:47:48,459 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=442, PETRI_PLACES=195, PETRI_TRANSITIONS=193} [2024-10-11 16:47:48,460 INFO L277 CegarLoopForPetriNet]: 191 programPoint places, 4 predicate places. [2024-10-11 16:47:48,461 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 193 transitions, 442 flow [2024-10-11 16:47:48,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 175.0) internal successors, (1750), 10 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:48,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:48,463 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:48,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 16:47:48,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:48,664 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-11 16:47:48,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:48,665 INFO L85 PathProgramCache]: Analyzing trace with hash -135711629, now seen corresponding path program 2 times [2024-10-11 16:47:48,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:48,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162775112] [2024-10-11 16:47:48,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:48,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:48,883 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 16:47:48,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:48,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162775112] [2024-10-11 16:47:48,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162775112] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:47:48,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307972695] [2024-10-11 16:47:48,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 16:47:48,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:48,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:48,887 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:47:48,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 16:47:48,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 16:47:48,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 16:47:48,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 16:47:48,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:47:49,061 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 16:47:49,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:47:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 16:47:49,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307972695] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:47:49,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:47:49,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-11 16:47:49,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904090475] [2024-10-11 16:47:49,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:47:49,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 16:47:49,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:49,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 16:47:49,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-11 16:47:49,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 205 [2024-10-11 16:47:49,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 193 transitions, 442 flow. Second operand has 15 states, 15 states have (on average 175.13333333333333) internal successors, (2627), 15 states have internal predecessors, (2627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:49,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:49,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 205 [2024-10-11 16:47:49,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:49,494 INFO L124 PetriNetUnfolderBase]: 45/586 cut-off events. [2024-10-11 16:47:49,495 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-10-11 16:47:49,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 586 events. 45/586 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2391 event pairs, 20 based on Foata normal form. 3/528 useless extension candidates. Maximal degree in co-relation 554. Up to 56 conditions per place. [2024-10-11 16:47:49,500 INFO L140 encePairwiseOnDemand]: 199/205 looper letters, 21 selfloop transitions, 18 changer transitions 0/207 dead transitions. [2024-10-11 16:47:49,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 207 transitions, 594 flow [2024-10-11 16:47:49,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 16:47:49,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 16:47:49,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3156 transitions. [2024-10-11 16:47:49,507 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8552845528455284 [2024-10-11 16:47:49,507 INFO L175 Difference]: Start difference. First operand has 195 places, 193 transitions, 442 flow. Second operand 18 states and 3156 transitions. [2024-10-11 16:47:49,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 207 transitions, 594 flow [2024-10-11 16:47:49,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 207 transitions, 582 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-11 16:47:49,511 INFO L231 Difference]: Finished difference. Result has 215 places, 203 transitions, 542 flow [2024-10-11 16:47:49,512 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=542, PETRI_PLACES=215, PETRI_TRANSITIONS=203} [2024-10-11 16:47:49,512 INFO L277 CegarLoopForPetriNet]: 191 programPoint places, 24 predicate places. [2024-10-11 16:47:49,513 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 203 transitions, 542 flow [2024-10-11 16:47:49,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 175.13333333333333) internal successors, (2627), 15 states have internal predecessors, (2627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:49,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:49,514 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:49,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 16:47:49,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 16:47:49,715 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-11 16:47:49,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:49,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1302683912, now seen corresponding path program 3 times [2024-10-11 16:47:49,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:49,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743618654] [2024-10-11 16:47:49,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:49,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:47:49,750 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:47:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:47:49,790 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:47:49,790 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:47:49,791 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-10-11 16:47:49,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-10-11 16:47:49,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-10-11 16:47:49,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-10-11 16:47:49,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-10-11 16:47:49,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-10-11 16:47:49,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-10-11 16:47:49,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2024-10-11 16:47:49,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-10-11 16:47:49,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-10-11 16:47:49,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-10-11 16:47:49,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-10-11 16:47:49,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-10-11 16:47:49,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-10-11 16:47:49,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 16:47:49,792 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-11 16:47:49,793 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:47:49,793 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-11 16:47:49,852 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:47:49,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 280 transitions, 578 flow [2024-10-11 16:47:49,897 INFO L124 PetriNetUnfolderBase]: 30/311 cut-off events. [2024-10-11 16:47:49,897 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-11 16:47:49,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 311 events. 30/311 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 950 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 233. Up to 8 conditions per place. [2024-10-11 16:47:49,903 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 280 transitions, 578 flow [2024-10-11 16:47:49,908 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 280 transitions, 578 flow [2024-10-11 16:47:49,909 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:47:49,910 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;@58a6cac5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:47:49,912 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-11 16:47:49,916 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:47:49,916 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-11 16:47:49,916 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:47:49,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:49,916 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:49,917 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-11 16:47:49,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:49,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1892900165, now seen corresponding path program 1 times [2024-10-11 16:47:49,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:49,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479178571] [2024-10-11 16:47:49,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:49,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:50,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:47:50,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:50,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479178571] [2024-10-11 16:47:50,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479178571] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:50,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:47:50,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 16:47:50,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525146821] [2024-10-11 16:47:50,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:50,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 16:47:50,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:50,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 16:47:50,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:47:50,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 280 [2024-10-11 16:47:50,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 280 transitions, 578 flow. Second operand has 6 states, 6 states have (on average 223.5) internal successors, (1341), 6 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:50,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:50,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 280 [2024-10-11 16:47:50,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:51,696 INFO L124 PetriNetUnfolderBase]: 2123/7992 cut-off events. [2024-10-11 16:47:51,696 INFO L125 PetriNetUnfolderBase]: For 622/622 co-relation queries the response was YES. [2024-10-11 16:47:51,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10986 conditions, 7992 events. 2123/7992 cut-off events. For 622/622 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 85750 event pairs, 1368 based on Foata normal form. 1735/8346 useless extension candidates. Maximal degree in co-relation 1867. Up to 2632 conditions per place. [2024-10-11 16:47:51,785 INFO L140 encePairwiseOnDemand]: 259/280 looper letters, 33 selfloop transitions, 5 changer transitions 0/255 dead transitions. [2024-10-11 16:47:51,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 255 transitions, 604 flow [2024-10-11 16:47:51,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 16:47:51,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 16:47:51,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1386 transitions. [2024-10-11 16:47:51,789 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.825 [2024-10-11 16:47:51,789 INFO L175 Difference]: Start difference. First operand has 260 places, 280 transitions, 578 flow. Second operand 6 states and 1386 transitions. [2024-10-11 16:47:51,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 255 transitions, 604 flow [2024-10-11 16:47:51,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 255 transitions, 602 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-11 16:47:51,797 INFO L231 Difference]: Finished difference. Result has 254 places, 255 transitions, 536 flow [2024-10-11 16:47:51,798 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=536, PETRI_PLACES=254, PETRI_TRANSITIONS=255} [2024-10-11 16:47:51,800 INFO L277 CegarLoopForPetriNet]: 260 programPoint places, -6 predicate places. [2024-10-11 16:47:51,800 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 255 transitions, 536 flow [2024-10-11 16:47:51,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 223.5) internal successors, (1341), 6 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:51,801 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:51,801 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:51,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 16:47:51,801 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-11 16:47:51,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:51,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1279203417, now seen corresponding path program 1 times [2024-10-11 16:47:51,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:51,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585394954] [2024-10-11 16:47:51,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:51,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:51,831 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 16:47:51,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:51,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585394954] [2024-10-11 16:47:51,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585394954] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:51,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:47:51,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 16:47:51,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216237669] [2024-10-11 16:47:51,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:51,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:47:51,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:51,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:47:51,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:47:51,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 280 [2024-10-11 16:47:51,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 255 transitions, 536 flow. Second operand has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:51,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:51,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 280 [2024-10-11 16:47:51,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:52,244 INFO L124 PetriNetUnfolderBase]: 345/2627 cut-off events. [2024-10-11 16:47:52,244 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-10-11 16:47:52,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3116 conditions, 2627 events. 345/2627 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 22304 event pairs, 220 based on Foata normal form. 1/2311 useless extension candidates. Maximal degree in co-relation 3052. Up to 381 conditions per place. [2024-10-11 16:47:52,276 INFO L140 encePairwiseOnDemand]: 277/280 looper letters, 19 selfloop transitions, 2 changer transitions 0/256 dead transitions. [2024-10-11 16:47:52,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 256 transitions, 582 flow [2024-10-11 16:47:52,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:47:52,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:47:52,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 745 transitions. [2024-10-11 16:47:52,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8869047619047619 [2024-10-11 16:47:52,279 INFO L175 Difference]: Start difference. First operand has 254 places, 255 transitions, 536 flow. Second operand 3 states and 745 transitions. [2024-10-11 16:47:52,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 256 transitions, 582 flow [2024-10-11 16:47:52,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 256 transitions, 570 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 16:47:52,283 INFO L231 Difference]: Finished difference. Result has 252 places, 256 transitions, 538 flow [2024-10-11 16:47:52,284 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=538, PETRI_PLACES=252, PETRI_TRANSITIONS=256} [2024-10-11 16:47:52,284 INFO L277 CegarLoopForPetriNet]: 260 programPoint places, -8 predicate places. [2024-10-11 16:47:52,285 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 256 transitions, 538 flow [2024-10-11 16:47:52,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:52,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:52,285 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:52,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 16:47:52,286 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-11 16:47:52,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:52,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1618866036, now seen corresponding path program 1 times [2024-10-11 16:47:52,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:52,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633829163] [2024-10-11 16:47:52,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:52,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:52,342 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 16:47:52,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:52,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633829163] [2024-10-11 16:47:52,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633829163] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:47:52,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265732646] [2024-10-11 16:47:52,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:52,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:52,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:52,345 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:47:52,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 16:47:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:52,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 16:47:52,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:47:52,477 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 16:47:52,477 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:47:52,514 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 16:47:52,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265732646] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:47:52,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:47:52,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 16:47:52,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433978688] [2024-10-11 16:47:52,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:47:52,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 16:47:52,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:52,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 16:47:52,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 16:47:52,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 280 [2024-10-11 16:47:52,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 256 transitions, 538 flow. Second operand has 10 states, 10 states have (on average 240.1) internal successors, (2401), 10 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:52,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:52,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 280 [2024-10-11 16:47:52,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:53,059 INFO L124 PetriNetUnfolderBase]: 345/2642 cut-off events. [2024-10-11 16:47:53,059 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-10-11 16:47:53,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3139 conditions, 2642 events. 345/2642 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 22236 event pairs, 220 based on Foata normal form. 2/2327 useless extension candidates. Maximal degree in co-relation 3087. Up to 381 conditions per place. [2024-10-11 16:47:53,086 INFO L140 encePairwiseOnDemand]: 274/280 looper letters, 23 selfloop transitions, 9 changer transitions 0/264 dead transitions. [2024-10-11 16:47:53,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 264 transitions, 620 flow [2024-10-11 16:47:53,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 16:47:53,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 16:47:53,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2176 transitions. [2024-10-11 16:47:53,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8634920634920635 [2024-10-11 16:47:53,093 INFO L175 Difference]: Start difference. First operand has 252 places, 256 transitions, 538 flow. Second operand 9 states and 2176 transitions. [2024-10-11 16:47:53,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 264 transitions, 620 flow [2024-10-11 16:47:53,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 264 transitions, 618 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 16:47:53,099 INFO L231 Difference]: Finished difference. Result has 262 places, 262 transitions, 586 flow [2024-10-11 16:47:53,099 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=586, PETRI_PLACES=262, PETRI_TRANSITIONS=262} [2024-10-11 16:47:53,100 INFO L277 CegarLoopForPetriNet]: 260 programPoint places, 2 predicate places. [2024-10-11 16:47:53,100 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 262 transitions, 586 flow [2024-10-11 16:47:53,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 240.1) internal successors, (2401), 10 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:53,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:53,102 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:53,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 16:47:53,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 16:47:53,306 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-11 16:47:53,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:53,306 INFO L85 PathProgramCache]: Analyzing trace with hash 635137620, now seen corresponding path program 2 times [2024-10-11 16:47:53,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:53,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445858920] [2024-10-11 16:47:53,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:53,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:53,480 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 16:47:53,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:53,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445858920] [2024-10-11 16:47:53,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445858920] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:47:53,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077718516] [2024-10-11 16:47:53,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 16:47:53,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:53,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:53,483 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:47:53,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 16:47:53,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 16:47:53,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 16:47:53,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 16:47:53,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:47:53,705 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 16:47:53,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:47:53,836 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 16:47:53,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077718516] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:47:53,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:47:53,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-11 16:47:53,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143180747] [2024-10-11 16:47:53,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:47:53,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 16:47:53,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:53,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 16:47:53,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-11 16:47:53,944 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 280 [2024-10-11 16:47:53,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 262 transitions, 586 flow. Second operand has 15 states, 15 states have (on average 240.2) internal successors, (3603), 15 states have internal predecessors, (3603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:53,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:53,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 280 [2024-10-11 16:47:53,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:54,724 INFO L124 PetriNetUnfolderBase]: 345/2681 cut-off events. [2024-10-11 16:47:54,724 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-10-11 16:47:54,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3232 conditions, 2681 events. 345/2681 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 22262 event pairs, 220 based on Foata normal form. 3/2367 useless extension candidates. Maximal degree in co-relation 3049. Up to 381 conditions per place. [2024-10-11 16:47:54,754 INFO L140 encePairwiseOnDemand]: 274/280 looper letters, 26 selfloop transitions, 18 changer transitions 0/276 dead transitions. [2024-10-11 16:47:54,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 276 transitions, 748 flow [2024-10-11 16:47:54,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 16:47:54,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 16:47:54,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4331 transitions. [2024-10-11 16:47:54,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8593253968253968 [2024-10-11 16:47:54,762 INFO L175 Difference]: Start difference. First operand has 262 places, 262 transitions, 586 flow. Second operand 18 states and 4331 transitions. [2024-10-11 16:47:54,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 276 transitions, 748 flow [2024-10-11 16:47:54,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 276 transitions, 736 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-11 16:47:54,768 INFO L231 Difference]: Finished difference. Result has 282 places, 272 transitions, 686 flow [2024-10-11 16:47:54,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=686, PETRI_PLACES=282, PETRI_TRANSITIONS=272} [2024-10-11 16:47:54,769 INFO L277 CegarLoopForPetriNet]: 260 programPoint places, 22 predicate places. [2024-10-11 16:47:54,769 INFO L471 AbstractCegarLoop]: Abstraction has has 282 places, 272 transitions, 686 flow [2024-10-11 16:47:54,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 240.2) internal successors, (3603), 15 states have internal predecessors, (3603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:54,770 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:54,771 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:54,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 16:47:54,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 16:47:54,972 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-11 16:47:54,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:54,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1976692487, now seen corresponding path program 3 times [2024-10-11 16:47:54,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:54,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919986523] [2024-10-11 16:47:54,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:54,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:47:55,018 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:47:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:47:55,049 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:47:55,050 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:47:55,050 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-10-11 16:47:55,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-10-11 16:47:55,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-10-11 16:47:55,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-10-11 16:47:55,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-10-11 16:47:55,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-10-11 16:47:55,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-10-11 16:47:55,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-10-11 16:47:55,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-10-11 16:47:55,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-10-11 16:47:55,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-10-11 16:47:55,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-10-11 16:47:55,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-10-11 16:47:55,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-10-11 16:47:55,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-10-11 16:47:55,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-10-11 16:47:55,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-10-11 16:47:55,054 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-10-11 16:47:55,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 16:47:55,054 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-11 16:47:55,054 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:47:55,054 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-11 16:47:55,093 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:47:55,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 355 transitions, 738 flow [2024-10-11 16:47:55,152 INFO L124 PetriNetUnfolderBase]: 39/397 cut-off events. [2024-10-11 16:47:55,152 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-11 16:47:55,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 416 conditions, 397 events. 39/397 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1395 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 319. Up to 10 conditions per place. [2024-10-11 16:47:55,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 329 places, 355 transitions, 738 flow [2024-10-11 16:47:55,163 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 355 transitions, 738 flow [2024-10-11 16:47:55,164 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:47:55,164 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;@58a6cac5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:47:55,164 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-10-11 16:47:55,167 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:47:55,167 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-11 16:47:55,168 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:47:55,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:55,168 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:55,168 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-11 16:47:55,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:55,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1005011522, now seen corresponding path program 1 times [2024-10-11 16:47:55,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:55,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779597750] [2024-10-11 16:47:55,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:55,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:55,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:47:55,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:55,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779597750] [2024-10-11 16:47:55,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779597750] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:55,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:47:55,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 16:47:55,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315905761] [2024-10-11 16:47:55,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:55,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 16:47:55,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:55,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 16:47:55,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:47:55,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 355 [2024-10-11 16:47:55,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 355 transitions, 738 flow. Second operand has 6 states, 6 states have (on average 284.5) internal successors, (1707), 6 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:47:55,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:55,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 355 [2024-10-11 16:47:55,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:48:06,843 INFO L124 PetriNetUnfolderBase]: 27422/78048 cut-off events. [2024-10-11 16:48:06,843 INFO L125 PetriNetUnfolderBase]: For 9100/9100 co-relation queries the response was YES. [2024-10-11 16:48:07,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114145 conditions, 78048 events. 27422/78048 cut-off events. For 9100/9100 co-relation queries the response was YES. Maximal size of possible extension queue 2925. Compared 1076195 event pairs, 18864 based on Foata normal form. 17951/81751 useless extension candidates. Maximal degree in co-relation 11022. Up to 32089 conditions per place. [2024-10-11 16:48:08,308 INFO L140 encePairwiseOnDemand]: 330/355 looper letters, 42 selfloop transitions, 5 changer transitions 0/324 dead transitions. [2024-10-11 16:48:08,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 324 transitions, 770 flow [2024-10-11 16:48:08,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 16:48:08,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 16:48:08,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1765 transitions. [2024-10-11 16:48:08,312 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8286384976525821 [2024-10-11 16:48:08,312 INFO L175 Difference]: Start difference. First operand has 329 places, 355 transitions, 738 flow. Second operand 6 states and 1765 transitions. [2024-10-11 16:48:08,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 324 transitions, 770 flow [2024-10-11 16:48:08,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 324 transitions, 764 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-11 16:48:08,323 INFO L231 Difference]: Finished difference. Result has 321 places, 324 transitions, 680 flow [2024-10-11 16:48:08,323 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=680, PETRI_PLACES=321, PETRI_TRANSITIONS=324} [2024-10-11 16:48:08,324 INFO L277 CegarLoopForPetriNet]: 329 programPoint places, -8 predicate places. [2024-10-11 16:48:08,324 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 324 transitions, 680 flow [2024-10-11 16:48:08,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 284.5) internal successors, (1707), 6 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:48:08,325 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:48:08,325 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:48:08,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 16:48:08,325 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-11 16:48:08,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:48:08,326 INFO L85 PathProgramCache]: Analyzing trace with hash -2046493159, now seen corresponding path program 1 times [2024-10-11 16:48:08,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:48:08,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840007553] [2024-10-11 16:48:08,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:48:08,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:48:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:48:08,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:48:08,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:48:08,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840007553] [2024-10-11 16:48:08,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840007553] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:48:08,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:48:08,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 16:48:08,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130860352] [2024-10-11 16:48:08,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:48:08,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:48:08,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:48:08,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:48:08,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:48:08,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 355 [2024-10-11 16:48:08,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 324 transitions, 680 flow. Second operand has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:48:08,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:48:08,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 355 [2024-10-11 16:48:08,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:48:10,466 INFO L124 PetriNetUnfolderBase]: 2345/13602 cut-off events. [2024-10-11 16:48:10,466 INFO L125 PetriNetUnfolderBase]: For 1218/1218 co-relation queries the response was YES. [2024-10-11 16:48:10,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16592 conditions, 13602 events. 2345/13602 cut-off events. For 1218/1218 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 163680 event pairs, 1720 based on Foata normal form. 1/12006 useless extension candidates. Maximal degree in co-relation 16527. Up to 2506 conditions per place. [2024-10-11 16:48:10,639 INFO L140 encePairwiseOnDemand]: 352/355 looper letters, 24 selfloop transitions, 2 changer transitions 0/325 dead transitions. [2024-10-11 16:48:10,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 325 transitions, 736 flow [2024-10-11 16:48:10,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:48:10,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:48:10,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 945 transitions. [2024-10-11 16:48:10,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8873239436619719 [2024-10-11 16:48:10,641 INFO L175 Difference]: Start difference. First operand has 321 places, 324 transitions, 680 flow. Second operand 3 states and 945 transitions. [2024-10-11 16:48:10,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 325 transitions, 736 flow [2024-10-11 16:48:10,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 325 transitions, 724 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 16:48:10,648 INFO L231 Difference]: Finished difference. Result has 319 places, 325 transitions, 682 flow [2024-10-11 16:48:10,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=682, PETRI_PLACES=319, PETRI_TRANSITIONS=325} [2024-10-11 16:48:10,649 INFO L277 CegarLoopForPetriNet]: 329 programPoint places, -10 predicate places. [2024-10-11 16:48:10,650 INFO L471 AbstractCegarLoop]: Abstraction has has 319 places, 325 transitions, 682 flow [2024-10-11 16:48:10,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:48:10,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:48:10,652 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:48:10,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 16:48:10,652 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-11 16:48:10,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:48:10,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2035898167, now seen corresponding path program 1 times [2024-10-11 16:48:10,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:48:10,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146635394] [2024-10-11 16:48:10,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:48:10,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:48:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:48:10,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:48:10,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:48:10,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146635394] [2024-10-11 16:48:10,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146635394] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:48:10,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330344464] [2024-10-11 16:48:10,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:48:10,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:48:10,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:48:10,713 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:48:10,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 16:48:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:48:10,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 16:48:10,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:48:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 16:48:10,839 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:48:10,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330344464] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:48:10,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:48:10,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-11 16:48:10,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053780988] [2024-10-11 16:48:10,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:48:10,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:48:10,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:48:10,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:48:10,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:48:10,865 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 355 [2024-10-11 16:48:10,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 325 transitions, 682 flow. Second operand has 3 states, 3 states have (on average 307.3333333333333) internal successors, (922), 3 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:48:10,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:48:10,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 355 [2024-10-11 16:48:10,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:48:14,350 INFO L124 PetriNetUnfolderBase]: 5494/24291 cut-off events. [2024-10-11 16:48:14,350 INFO L125 PetriNetUnfolderBase]: For 1898/1898 co-relation queries the response was YES. [2024-10-11 16:48:14,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31795 conditions, 24291 events. 5494/24291 cut-off events. For 1898/1898 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 311394 event pairs, 3970 based on Foata normal form. 156/21294 useless extension candidates. Maximal degree in co-relation 31747. Up to 5843 conditions per place. [2024-10-11 16:48:14,664 INFO L140 encePairwiseOnDemand]: 352/355 looper letters, 41 selfloop transitions, 2 changer transitions 0/341 dead transitions. [2024-10-11 16:48:14,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 341 transitions, 815 flow [2024-10-11 16:48:14,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:48:14,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:48:14,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 959 transitions. [2024-10-11 16:48:14,667 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9004694835680751 [2024-10-11 16:48:14,667 INFO L175 Difference]: Start difference. First operand has 319 places, 325 transitions, 682 flow. Second operand 3 states and 959 transitions. [2024-10-11 16:48:14,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 341 transitions, 815 flow [2024-10-11 16:48:14,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 341 transitions, 813 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 16:48:14,678 INFO L231 Difference]: Finished difference. Result has 321 places, 326 transitions, 692 flow [2024-10-11 16:48:14,679 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=692, PETRI_PLACES=321, PETRI_TRANSITIONS=326} [2024-10-11 16:48:14,680 INFO L277 CegarLoopForPetriNet]: 329 programPoint places, -8 predicate places. [2024-10-11 16:48:14,680 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 326 transitions, 692 flow [2024-10-11 16:48:14,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 307.3333333333333) internal successors, (922), 3 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:48:14,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:48:14,680 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:48:14,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 16:48:14,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 16:48:14,881 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-11 16:48:14,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:48:14,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1089904491, now seen corresponding path program 1 times [2024-10-11 16:48:14,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:48:14,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813514308] [2024-10-11 16:48:14,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:48:14,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:48:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:48:14,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:48:14,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:48:14,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813514308] [2024-10-11 16:48:14,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813514308] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:48:14,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391816926] [2024-10-11 16:48:14,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:48:14,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:48:14,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:48:14,949 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:48:14,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 16:48:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:48:15,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 16:48:15,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:48:15,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:48:15,103 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:48:15,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:48:15,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391816926] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:48:15,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:48:15,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 16:48:15,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383894148] [2024-10-11 16:48:15,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:48:15,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 16:48:15,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:48:15,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 16:48:15,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 16:48:15,232 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 355 [2024-10-11 16:48:15,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 326 transitions, 692 flow. Second operand has 10 states, 10 states have (on average 304.9) internal successors, (3049), 10 states have internal predecessors, (3049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:48:15,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:48:15,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 355 [2024-10-11 16:48:15,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:48:17,456 INFO L124 PetriNetUnfolderBase]: 2346/13636 cut-off events. [2024-10-11 16:48:17,456 INFO L125 PetriNetUnfolderBase]: For 1217/1217 co-relation queries the response was YES. [2024-10-11 16:48:17,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16639 conditions, 13636 events. 2346/13636 cut-off events. For 1217/1217 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 164322 event pairs, 1720 based on Foata normal form. 2/12036 useless extension candidates. Maximal degree in co-relation 16543. Up to 2506 conditions per place. [2024-10-11 16:48:17,657 INFO L140 encePairwiseOnDemand]: 349/355 looper letters, 28 selfloop transitions, 9 changer transitions 0/334 dead transitions. [2024-10-11 16:48:17,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 334 transitions, 784 flow [2024-10-11 16:48:17,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 16:48:17,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 16:48:17,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2766 transitions. [2024-10-11 16:48:17,660 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8657276995305164 [2024-10-11 16:48:17,661 INFO L175 Difference]: Start difference. First operand has 321 places, 326 transitions, 692 flow. Second operand 9 states and 2766 transitions. [2024-10-11 16:48:17,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 334 transitions, 784 flow [2024-10-11 16:48:17,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 334 transitions, 782 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 16:48:17,670 INFO L231 Difference]: Finished difference. Result has 331 places, 332 transitions, 740 flow [2024-10-11 16:48:17,670 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=740, PETRI_PLACES=331, PETRI_TRANSITIONS=332} [2024-10-11 16:48:17,671 INFO L277 CegarLoopForPetriNet]: 329 programPoint places, 2 predicate places. [2024-10-11 16:48:17,671 INFO L471 AbstractCegarLoop]: Abstraction has has 331 places, 332 transitions, 740 flow [2024-10-11 16:48:17,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.9) internal successors, (3049), 10 states have internal predecessors, (3049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:48:17,672 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:48:17,673 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:48:17,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 16:48:17,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:48:17,874 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-11 16:48:17,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:48:17,874 INFO L85 PathProgramCache]: Analyzing trace with hash -442498709, now seen corresponding path program 2 times [2024-10-11 16:48:17,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:48:17,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838078420] [2024-10-11 16:48:17,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:48:17,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:48:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:48:18,013 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:48:18,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:48:18,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838078420] [2024-10-11 16:48:18,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838078420] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:48:18,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101800093] [2024-10-11 16:48:18,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 16:48:18,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:48:18,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:48:18,016 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:48:18,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 16:48:18,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 16:48:18,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 16:48:18,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 16:48:18,139 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:48:18,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-11 16:48:18,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-10-11 16:48:18,223 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 16:48:18,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-10-11 16:48:18,262 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 16:48:18,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-10-11 16:48:18,292 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-11 16:48:18,292 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:48:18,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101800093] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:48:18,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:48:18,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-10-11 16:48:18,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601059469] [2024-10-11 16:48:18,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:48:18,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 16:48:18,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:48:18,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 16:48:18,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-11 16:48:18,575 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 355 [2024-10-11 16:48:18,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 332 transitions, 740 flow. Second operand has 6 states, 6 states have (on average 298.3333333333333) internal successors, (1790), 6 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:48:18,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:48:18,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 355 [2024-10-11 16:48:18,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:48:24,748 INFO L124 PetriNetUnfolderBase]: 9055/35816 cut-off events. [2024-10-11 16:48:24,748 INFO L125 PetriNetUnfolderBase]: For 3834/3834 co-relation queries the response was YES. [2024-10-11 16:48:25,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48817 conditions, 35816 events. 9055/35816 cut-off events. For 3834/3834 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 473417 event pairs, 3595 based on Foata normal form. 0/31888 useless extension candidates. Maximal degree in co-relation 48706. Up to 5325 conditions per place. [2024-10-11 16:48:25,270 INFO L140 encePairwiseOnDemand]: 349/355 looper letters, 90 selfloop transitions, 6 changer transitions 0/391 dead transitions. [2024-10-11 16:48:25,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 391 transitions, 1110 flow [2024-10-11 16:48:25,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 16:48:25,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 16:48:25,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1872 transitions. [2024-10-11 16:48:25,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8788732394366198 [2024-10-11 16:48:25,274 INFO L175 Difference]: Start difference. First operand has 331 places, 332 transitions, 740 flow. Second operand 6 states and 1872 transitions. [2024-10-11 16:48:25,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 391 transitions, 1110 flow [2024-10-11 16:48:25,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 391 transitions, 1104 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-11 16:48:25,293 INFO L231 Difference]: Finished difference. Result has 334 places, 331 transitions, 744 flow [2024-10-11 16:48:25,294 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=744, PETRI_PLACES=334, PETRI_TRANSITIONS=331} [2024-10-11 16:48:25,295 INFO L277 CegarLoopForPetriNet]: 329 programPoint places, 5 predicate places. [2024-10-11 16:48:25,297 INFO L471 AbstractCegarLoop]: Abstraction has has 334 places, 331 transitions, 744 flow [2024-10-11 16:48:25,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 298.3333333333333) internal successors, (1790), 6 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:48:25,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:48:25,298 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:48:25,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 16:48:25,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:48:25,499 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-11 16:48:25,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:48:25,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1955802234, now seen corresponding path program 1 times [2024-10-11 16:48:25,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:48:25,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295769310] [2024-10-11 16:48:25,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:48:25,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:48:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:48:25,654 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-11 16:48:25,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:48:25,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295769310] [2024-10-11 16:48:25,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295769310] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:48:25,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268190859] [2024-10-11 16:48:25,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:48:25,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:48:25,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:48:25,657 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:48:25,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 16:48:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:48:25,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 16:48:25,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:48:25,882 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-11 16:48:25,882 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:48:25,992 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-11 16:48:25,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268190859] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:48:25,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:48:25,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-11 16:48:25,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720020331] [2024-10-11 16:48:25,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:48:25,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 16:48:25,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:48:25,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 16:48:25,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-11 16:48:26,091 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 355 [2024-10-11 16:48:26,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 331 transitions, 744 flow. Second operand has 15 states, 15 states have (on average 305.26666666666665) internal successors, (4579), 15 states have internal predecessors, (4579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:48:26,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:48:26,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 355 [2024-10-11 16:48:26,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:48:28,555 INFO L124 PetriNetUnfolderBase]: 2345/13675 cut-off events. [2024-10-11 16:48:28,555 INFO L125 PetriNetUnfolderBase]: For 1237/1237 co-relation queries the response was YES. [2024-10-11 16:48:28,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16737 conditions, 13675 events. 2345/13675 cut-off events. For 1237/1237 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 164490 event pairs, 1720 based on Foata normal form. 3/12078 useless extension candidates. Maximal degree in co-relation 16557. Up to 2506 conditions per place. [2024-10-11 16:48:28,710 INFO L140 encePairwiseOnDemand]: 349/355 looper letters, 31 selfloop transitions, 18 changer transitions 0/345 dead transitions. [2024-10-11 16:48:28,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 345 transitions, 910 flow [2024-10-11 16:48:28,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 16:48:28,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 16:48:28,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5506 transitions. [2024-10-11 16:48:28,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8616588419405321 [2024-10-11 16:48:28,713 INFO L175 Difference]: Start difference. First operand has 334 places, 331 transitions, 744 flow. Second operand 18 states and 5506 transitions. [2024-10-11 16:48:28,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 345 transitions, 910 flow [2024-10-11 16:48:28,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 345 transitions, 898 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 16:48:28,723 INFO L231 Difference]: Finished difference. Result has 350 places, 341 transitions, 838 flow [2024-10-11 16:48:28,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=838, PETRI_PLACES=350, PETRI_TRANSITIONS=341} [2024-10-11 16:48:28,724 INFO L277 CegarLoopForPetriNet]: 329 programPoint places, 21 predicate places. [2024-10-11 16:48:28,724 INFO L471 AbstractCegarLoop]: Abstraction has has 350 places, 341 transitions, 838 flow [2024-10-11 16:48:28,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 305.26666666666665) internal successors, (4579), 15 states have internal predecessors, (4579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:48:28,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:48:28,726 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:48:28,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-11 16:48:28,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-11 16:48:28,927 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-11 16:48:28,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:48:28,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1140058058, now seen corresponding path program 2 times [2024-10-11 16:48:28,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:48:28,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775019134] [2024-10-11 16:48:28,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:48:28,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:48:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:48:28,968 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:48:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:48:29,016 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:48:29,020 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:48:29,020 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-10-11 16:48:29,020 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-10-11 16:48:29,020 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-10-11 16:48:29,020 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-10-11 16:48:29,020 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-10-11 16:48:29,020 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-10-11 16:48:29,021 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-10-11 16:48:29,021 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-10-11 16:48:29,021 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-10-11 16:48:29,021 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-10-11 16:48:29,021 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-10-11 16:48:29,021 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-10-11 16:48:29,021 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-10-11 16:48:29,021 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-10-11 16:48:29,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-10-11 16:48:29,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-10-11 16:48:29,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-10-11 16:48:29,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-10-11 16:48:29,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-10-11 16:48:29,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-10-11 16:48:29,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-10-11 16:48:29,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-10-11 16:48:29,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-11 16:48:29,023 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-10-11 16:48:29,023 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:48:29,023 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-11 16:48:29,072 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:48:29,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 398 places, 430 transitions, 900 flow [2024-10-11 16:48:29,149 INFO L124 PetriNetUnfolderBase]: 48/483 cut-off events. [2024-10-11 16:48:29,150 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-11 16:48:29,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 483 events. 48/483 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1872 event pairs, 0 based on Foata normal form. 0/408 useless extension candidates. Maximal degree in co-relation 410. Up to 12 conditions per place. [2024-10-11 16:48:29,161 INFO L82 GeneralOperation]: Start removeDead. Operand has 398 places, 430 transitions, 900 flow [2024-10-11 16:48:29,167 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 398 places, 430 transitions, 900 flow [2024-10-11 16:48:29,168 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:48:29,168 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;@58a6cac5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:48:29,168 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-10-11 16:48:29,171 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:48:29,172 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-11 16:48:29,172 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:48:29,172 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:48:29,172 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:48:29,172 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-10-11 16:48:29,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:48:29,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1683823188, now seen corresponding path program 1 times [2024-10-11 16:48:29,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:48:29,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510210787] [2024-10-11 16:48:29,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:48:29,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:48:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:48:29,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:48:29,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:48:29,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510210787] [2024-10-11 16:48:29,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510210787] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:48:29,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:48:29,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 16:48:29,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220793258] [2024-10-11 16:48:29,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:48:29,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 16:48:29,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:48:29,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 16:48:29,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:48:29,513 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 430 [2024-10-11 16:48:29,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 430 transitions, 900 flow. Second operand has 6 states, 6 states have (on average 345.5) internal successors, (2073), 6 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:48:29,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:48:29,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 430 [2024-10-11 16:48:29,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand