./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/goblint-regression/06-symbeq_07-tricky_address2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 17:04:26,913 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 17:04:26,967 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-14 17:04:26,972 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 17:04:26,973 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 17:04:26,997 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 17:04:26,998 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 17:04:26,999 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 17:04:26,999 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 17:04:27,000 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 17:04:27,001 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 17:04:27,001 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 17:04:27,002 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 17:04:27,002 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 17:04:27,002 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 17:04:27,005 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 17:04:27,005 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 17:04:27,005 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 17:04:27,005 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 17:04:27,005 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 17:04:27,006 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 17:04:27,006 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 17:04:27,006 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-14 17:04:27,006 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 17:04:27,007 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 17:04:27,007 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 17:04:27,007 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 17:04:27,007 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 17:04:27,008 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 17:04:27,008 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 17:04:27,008 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 17:04:27,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:04:27,009 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 17:04:27,009 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 17:04:27,009 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 17:04:27,010 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 17:04:27,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 17:04:27,010 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 17:04:27,010 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 17:04:27,011 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 17:04:27,011 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 17:04:27,011 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 [2024-10-14 17:04:27,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 17:04:27,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 17:04:27,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 17:04:27,214 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 17:04:27,215 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 17:04:27,216 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2024-10-14 17:04:28,590 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 17:04:28,969 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 17:04:28,969 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2024-10-14 17:04:28,989 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a5354cd4/2dbd818151c34b999ef02304582d9a2a/FLAG5fa411e70 [2024-10-14 17:04:29,187 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a5354cd4/2dbd818151c34b999ef02304582d9a2a [2024-10-14 17:04:29,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 17:04:29,190 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 17:04:29,191 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 17:04:29,191 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 17:04:29,196 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 17:04:29,197 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:04:29" (1/1) ... [2024-10-14 17:04:29,198 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5090f441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:29, skipping insertion in model container [2024-10-14 17:04:29,198 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:04:29" (1/1) ... [2024-10-14 17:04:29,231 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 17:04:29,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:04:29,566 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 17:04:29,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:04:29,700 INFO L204 MainTranslator]: Completed translation [2024-10-14 17:04:29,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:29 WrapperNode [2024-10-14 17:04:29,700 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 17:04:29,701 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 17:04:29,701 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 17:04:29,702 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 17:04:29,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:29" (1/1) ... [2024-10-14 17:04:29,728 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:29" (1/1) ... [2024-10-14 17:04:29,753 INFO L138 Inliner]: procedures = 264, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 92 [2024-10-14 17:04:29,754 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 17:04:29,754 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 17:04:29,754 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 17:04:29,754 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 17:04:29,765 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:29" (1/1) ... [2024-10-14 17:04:29,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:29" (1/1) ... [2024-10-14 17:04:29,768 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:29" (1/1) ... [2024-10-14 17:04:29,768 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:29" (1/1) ... [2024-10-14 17:04:29,776 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:29" (1/1) ... [2024-10-14 17:04:29,778 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:29" (1/1) ... [2024-10-14 17:04:29,780 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:29" (1/1) ... [2024-10-14 17:04:29,780 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:29" (1/1) ... [2024-10-14 17:04:29,783 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 17:04:29,783 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 17:04:29,783 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 17:04:29,784 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 17:04:29,784 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:29" (1/1) ... [2024-10-14 17:04:29,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:04:29,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:04:29,831 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 17:04:29,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 17:04:29,872 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 17:04:29,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-14 17:04:29,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-14 17:04:29,873 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 17:04:29,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 17:04:29,873 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-14 17:04:29,874 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-14 17:04:29,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 17:04:29,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 17:04:29,875 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 17:04:30,031 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 17:04:30,034 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 17:04:30,264 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 17:04:30,264 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 17:04:30,284 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 17:04:30,284 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 17:04:30,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:04:30 BoogieIcfgContainer [2024-10-14 17:04:30,285 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 17:04:30,286 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 17:04:30,286 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 17:04:30,289 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 17:04:30,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:04:29" (1/3) ... [2024-10-14 17:04:30,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34be4cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:04:30, skipping insertion in model container [2024-10-14 17:04:30,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:29" (2/3) ... [2024-10-14 17:04:30,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34be4cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:04:30, skipping insertion in model container [2024-10-14 17:04:30,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:04:30" (3/3) ... [2024-10-14 17:04:30,291 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2024-10-14 17:04:30,305 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 17:04:30,305 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-14 17:04:30,305 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 17:04:30,357 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 17:04:30,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 208 flow [2024-10-14 17:04:30,420 INFO L124 PetriNetUnfolderBase]: 4/101 cut-off events. [2024-10-14 17:04:30,420 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 17:04:30,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 101 events. 4/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 81 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2024-10-14 17:04:30,426 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 102 transitions, 208 flow [2024-10-14 17:04:30,429 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 101 transitions, 205 flow [2024-10-14 17:04:30,436 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:04:30,441 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;@2b4f9a72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:04:30,442 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-14 17:04:30,452 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 17:04:30,452 INFO L124 PetriNetUnfolderBase]: 4/54 cut-off events. [2024-10-14 17:04:30,452 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 17:04:30,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:04:30,454 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:04:30,457 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:04:30,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:04:30,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1729651413, now seen corresponding path program 1 times [2024-10-14 17:04:30,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:04:30,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886879292] [2024-10-14 17:04:30,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:30,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:04:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:30,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:04:30,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886879292] [2024-10-14 17:04:30,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886879292] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:04:30,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:04:30,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:04:30,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970910890] [2024-10-14 17:04:30,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:04:30,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:04:30,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:04:30,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:04:30,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:04:30,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 102 [2024-10-14 17:04:30,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 101 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:30,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:04:30,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 102 [2024-10-14 17:04:30,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:04:30,969 INFO L124 PetriNetUnfolderBase]: 7/162 cut-off events. [2024-10-14 17:04:30,969 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 17:04:30,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 162 events. 7/162 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 322 event pairs, 6 based on Foata normal form. 5/155 useless extension candidates. Maximal degree in co-relation 144. Up to 24 conditions per place. [2024-10-14 17:04:30,972 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 10 selfloop transitions, 2 changer transitions 1/99 dead transitions. [2024-10-14 17:04:30,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 99 transitions, 225 flow [2024-10-14 17:04:30,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:04:30,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:04:30,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2024-10-14 17:04:30,987 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9183006535947712 [2024-10-14 17:04:30,990 INFO L175 Difference]: Start difference. First operand has 101 places, 101 transitions, 205 flow. Second operand 3 states and 281 transitions. [2024-10-14 17:04:30,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 99 transitions, 225 flow [2024-10-14 17:04:30,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 99 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 17:04:31,001 INFO L231 Difference]: Finished difference. Result has 103 places, 98 transitions, 208 flow [2024-10-14 17:04:31,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=103, PETRI_TRANSITIONS=98} [2024-10-14 17:04:31,009 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 2 predicate places. [2024-10-14 17:04:31,009 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 98 transitions, 208 flow [2024-10-14 17:04:31,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:31,010 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:04:31,010 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] [2024-10-14 17:04:31,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 17:04:31,011 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:04:31,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:04:31,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1133289900, now seen corresponding path program 1 times [2024-10-14 17:04:31,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:04:31,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355846340] [2024-10-14 17:04:31,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:31,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:04:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:31,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:31,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:04:31,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355846340] [2024-10-14 17:04:31,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355846340] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:04:31,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290634859] [2024-10-14 17:04:31,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:31,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:04:31,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:04:31,126 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:04:31,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 17:04:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:31,193 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 17:04:31,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:04:31,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:31,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:04:31,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:31,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290634859] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:04:31,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:04:31,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-14 17:04:31,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199331605] [2024-10-14 17:04:31,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:04:31,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 17:04:31,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:04:31,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 17:04:31,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 17:04:31,337 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 102 [2024-10-14 17:04:31,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 98 transitions, 208 flow. Second operand has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:31,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:04:31,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 102 [2024-10-14 17:04:31,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:04:31,441 INFO L124 PetriNetUnfolderBase]: 7/168 cut-off events. [2024-10-14 17:04:31,442 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 17:04:31,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 168 events. 7/168 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 316 event pairs, 6 based on Foata normal form. 2/159 useless extension candidates. Maximal degree in co-relation 191. Up to 24 conditions per place. [2024-10-14 17:04:31,443 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 14 selfloop transitions, 9 changer transitions 0/106 dead transitions. [2024-10-14 17:04:31,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 106 transitions, 272 flow [2024-10-14 17:04:31,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 17:04:31,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 17:04:31,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 790 transitions. [2024-10-14 17:04:31,448 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8605664488017429 [2024-10-14 17:04:31,448 INFO L175 Difference]: Start difference. First operand has 103 places, 98 transitions, 208 flow. Second operand 9 states and 790 transitions. [2024-10-14 17:04:31,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 106 transitions, 272 flow [2024-10-14 17:04:31,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 106 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 17:04:31,450 INFO L231 Difference]: Finished difference. Result has 112 places, 104 transitions, 256 flow [2024-10-14 17:04:31,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=256, PETRI_PLACES=112, PETRI_TRANSITIONS=104} [2024-10-14 17:04:31,451 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 11 predicate places. [2024-10-14 17:04:31,452 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 104 transitions, 256 flow [2024-10-14 17:04:31,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:31,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:04:31,453 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-10-14 17:04:31,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 17:04:31,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:04:31,654 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:04:31,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:04:31,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1782452404, now seen corresponding path program 2 times [2024-10-14 17:04:31,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:04:31,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646535157] [2024-10-14 17:04:31,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:31,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:04:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:31,891 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:31,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:04:31,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646535157] [2024-10-14 17:04:31,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646535157] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:04:31,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425661356] [2024-10-14 17:04:31,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 17:04:31,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:04:31,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:04:31,894 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:04:31,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 17:04:31,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 17:04:31,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 17:04:31,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 17:04:31,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:04:32,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-14 17:04:32,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-10-14 17:04:32,066 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 17:04:32,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-10-14 17:04:32,098 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 17:04:32,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-10-14 17:04:32,127 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 17:04:32,127 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 17:04:32,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425661356] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:04:32,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 17:04:32,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-10-14 17:04:32,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977541788] [2024-10-14 17:04:32,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:04:32,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:04:32,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:04:32,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:04:32,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-14 17:04:32,278 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 102 [2024-10-14 17:04:32,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 104 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:32,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:04:32,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 102 [2024-10-14 17:04:32,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:04:32,412 INFO L124 PetriNetUnfolderBase]: 129/617 cut-off events. [2024-10-14 17:04:32,412 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-14 17:04:32,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 617 events. 129/617 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3568 event pairs, 47 based on Foata normal form. 0/557 useless extension candidates. Maximal degree in co-relation 893. Up to 178 conditions per place. [2024-10-14 17:04:32,416 INFO L140 encePairwiseOnDemand]: 91/102 looper letters, 43 selfloop transitions, 22 changer transitions 0/145 dead transitions. [2024-10-14 17:04:32,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 145 transitions, 468 flow [2024-10-14 17:04:32,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:04:32,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:04:32,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 516 transitions. [2024-10-14 17:04:32,418 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8431372549019608 [2024-10-14 17:04:32,418 INFO L175 Difference]: Start difference. First operand has 112 places, 104 transitions, 256 flow. Second operand 6 states and 516 transitions. [2024-10-14 17:04:32,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 145 transitions, 468 flow [2024-10-14 17:04:32,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 145 transitions, 462 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-14 17:04:32,422 INFO L231 Difference]: Finished difference. Result has 120 places, 126 transitions, 396 flow [2024-10-14 17:04:32,422 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=396, PETRI_PLACES=120, PETRI_TRANSITIONS=126} [2024-10-14 17:04:32,423 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 19 predicate places. [2024-10-14 17:04:32,423 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 126 transitions, 396 flow [2024-10-14 17:04:32,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:32,423 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:04:32,423 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-10-14 17:04:32,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 17:04:32,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-14 17:04:32,628 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:04:32,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:04:32,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1803998658, now seen corresponding path program 1 times [2024-10-14 17:04:32,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:04:32,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624562575] [2024-10-14 17:04:32,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:32,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:04:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:32,787 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:32,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:04:32,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624562575] [2024-10-14 17:04:32,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624562575] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:04:32,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101064086] [2024-10-14 17:04:32,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:32,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:04:32,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:04:32,790 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:04:32,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 17:04:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:32,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 17:04:32,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:04:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:32,891 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:04:32,971 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:32,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101064086] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:04:32,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:04:32,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-10-14 17:04:32,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414191107] [2024-10-14 17:04:32,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:04:32,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 17:04:32,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:04:32,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 17:04:32,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-14 17:04:33,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 102 [2024-10-14 17:04:33,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 126 transitions, 396 flow. Second operand has 18 states, 18 states have (on average 87.0) internal successors, (1566), 18 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:33,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:04:33,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 102 [2024-10-14 17:04:33,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:04:33,206 INFO L124 PetriNetUnfolderBase]: 41/444 cut-off events. [2024-10-14 17:04:33,206 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-10-14 17:04:33,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 444 events. 41/444 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2266 event pairs, 16 based on Foata normal form. 4/421 useless extension candidates. Maximal degree in co-relation 626. Up to 55 conditions per place. [2024-10-14 17:04:33,212 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 18 selfloop transitions, 21 changer transitions 0/144 dead transitions. [2024-10-14 17:04:33,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 144 transitions, 562 flow [2024-10-14 17:04:33,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-14 17:04:33,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-14 17:04:33,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1828 transitions. [2024-10-14 17:04:33,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8534080298786181 [2024-10-14 17:04:33,216 INFO L175 Difference]: Start difference. First operand has 120 places, 126 transitions, 396 flow. Second operand 21 states and 1828 transitions. [2024-10-14 17:04:33,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 144 transitions, 562 flow [2024-10-14 17:04:33,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 144 transitions, 562 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:04:33,224 INFO L231 Difference]: Finished difference. Result has 145 places, 139 transitions, 526 flow [2024-10-14 17:04:33,224 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=526, PETRI_PLACES=145, PETRI_TRANSITIONS=139} [2024-10-14 17:04:33,225 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 44 predicate places. [2024-10-14 17:04:33,226 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 139 transitions, 526 flow [2024-10-14 17:04:33,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 87.0) internal successors, (1566), 18 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:33,227 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:04:33,227 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:04:33,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 17:04:33,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:04:33,428 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:04:33,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:04:33,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1094805246, now seen corresponding path program 2 times [2024-10-14 17:04:33,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:04:33,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863575712] [2024-10-14 17:04:33,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:33,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:04:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:33,751 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:33,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:04:33,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863575712] [2024-10-14 17:04:33,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863575712] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:04:33,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112858304] [2024-10-14 17:04:33,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 17:04:33,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:04:33,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:04:33,756 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:04:33,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 17:04:33,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 17:04:33,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 17:04:33,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 17:04:33,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:04:33,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-14 17:04:33,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-10-14 17:04:33,917 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 17:04:33,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-10-14 17:04:33,978 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 17:04:33,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-10-14 17:04:34,025 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-14 17:04:34,025 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 17:04:34,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112858304] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:04:34,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 17:04:34,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2024-10-14 17:04:34,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274803487] [2024-10-14 17:04:34,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:04:34,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:04:34,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:04:34,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:04:34,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2024-10-14 17:04:34,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 102 [2024-10-14 17:04:34,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 139 transitions, 526 flow. Second operand has 6 states, 6 states have (on average 71.66666666666667) internal successors, (430), 6 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:34,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:04:34,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 102 [2024-10-14 17:04:34,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:04:34,593 INFO L124 PetriNetUnfolderBase]: 306/1276 cut-off events. [2024-10-14 17:04:34,593 INFO L125 PetriNetUnfolderBase]: For 285/295 co-relation queries the response was YES. [2024-10-14 17:04:34,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2443 conditions, 1276 events. 306/1276 cut-off events. For 285/295 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 9047 event pairs, 116 based on Foata normal form. 5/1169 useless extension candidates. Maximal degree in co-relation 2305. Up to 464 conditions per place. [2024-10-14 17:04:34,603 INFO L140 encePairwiseOnDemand]: 87/102 looper letters, 72 selfloop transitions, 36 changer transitions 2/196 dead transitions. [2024-10-14 17:04:34,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 196 transitions, 898 flow [2024-10-14 17:04:34,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:04:34,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:04:34,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 502 transitions. [2024-10-14 17:04:34,606 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8202614379084967 [2024-10-14 17:04:34,606 INFO L175 Difference]: Start difference. First operand has 145 places, 139 transitions, 526 flow. Second operand 6 states and 502 transitions. [2024-10-14 17:04:34,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 196 transitions, 898 flow [2024-10-14 17:04:34,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 196 transitions, 874 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-10-14 17:04:34,615 INFO L231 Difference]: Finished difference. Result has 148 places, 171 transitions, 754 flow [2024-10-14 17:04:34,615 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=754, PETRI_PLACES=148, PETRI_TRANSITIONS=171} [2024-10-14 17:04:34,616 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 47 predicate places. [2024-10-14 17:04:34,616 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 171 transitions, 754 flow [2024-10-14 17:04:34,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.66666666666667) internal successors, (430), 6 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:34,617 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:04:34,618 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:04:34,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 17:04:34,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:04:34,819 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:04:34,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:04:34,820 INFO L85 PathProgramCache]: Analyzing trace with hash 69964235, now seen corresponding path program 1 times [2024-10-14 17:04:34,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:04:34,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907704034] [2024-10-14 17:04:34,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:34,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:04:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:35,135 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:35,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:04:35,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907704034] [2024-10-14 17:04:35,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907704034] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:04:35,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823542887] [2024-10-14 17:04:35,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:35,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:04:35,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:04:35,140 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:04:35,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 17:04:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:35,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 17:04:35,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:04:35,284 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:35,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:04:35,453 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:35,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823542887] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:04:35,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:04:35,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-10-14 17:04:35,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115514263] [2024-10-14 17:04:35,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:04:35,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-14 17:04:35,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:04:35,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-14 17:04:35,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-10-14 17:04:35,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 102 [2024-10-14 17:04:35,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 171 transitions, 754 flow. Second operand has 23 states, 23 states have (on average 87.08695652173913) internal successors, (2003), 23 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:35,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:04:35,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 102 [2024-10-14 17:04:35,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:04:35,804 INFO L124 PetriNetUnfolderBase]: 120/876 cut-off events. [2024-10-14 17:04:35,805 INFO L125 PetriNetUnfolderBase]: For 414/414 co-relation queries the response was YES. [2024-10-14 17:04:35,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1774 conditions, 876 events. 120/876 cut-off events. For 414/414 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5974 event pairs, 33 based on Foata normal form. 3/820 useless extension candidates. Maximal degree in co-relation 1557. Up to 134 conditions per place. [2024-10-14 17:04:35,809 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 21 selfloop transitions, 30 changer transitions 0/188 dead transitions. [2024-10-14 17:04:35,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 188 transitions, 978 flow [2024-10-14 17:04:35,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-14 17:04:35,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-14 17:04:35,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2604 transitions. [2024-10-14 17:04:35,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8509803921568627 [2024-10-14 17:04:35,814 INFO L175 Difference]: Start difference. First operand has 148 places, 171 transitions, 754 flow. Second operand 30 states and 2604 transitions. [2024-10-14 17:04:35,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 188 transitions, 978 flow [2024-10-14 17:04:35,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 188 transitions, 954 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-10-14 17:04:35,820 INFO L231 Difference]: Finished difference. Result has 180 places, 181 transitions, 882 flow [2024-10-14 17:04:35,820 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=882, PETRI_PLACES=180, PETRI_TRANSITIONS=181} [2024-10-14 17:04:35,820 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 79 predicate places. [2024-10-14 17:04:35,821 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 181 transitions, 882 flow [2024-10-14 17:04:35,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 87.08695652173913) internal successors, (2003), 23 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:35,822 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:04:35,822 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:04:35,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 17:04:36,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:04:36,027 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:04:36,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:04:36,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1406641484, now seen corresponding path program 2 times [2024-10-14 17:04:36,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:04:36,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672580038] [2024-10-14 17:04:36,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:36,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:04:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:36,498 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-14 17:04:36,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:04:36,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672580038] [2024-10-14 17:04:36,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672580038] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:04:36,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:04:36,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:04:36,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752124903] [2024-10-14 17:04:36,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:04:36,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:04:36,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:04:36,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:04:36,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:04:36,623 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 102 [2024-10-14 17:04:36,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 181 transitions, 882 flow. Second operand has 6 states, 6 states have (on average 78.5) internal successors, (471), 6 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:36,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:04:36,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 102 [2024-10-14 17:04:36,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:04:36,810 INFO L124 PetriNetUnfolderBase]: 300/1368 cut-off events. [2024-10-14 17:04:36,811 INFO L125 PetriNetUnfolderBase]: For 892/932 co-relation queries the response was YES. [2024-10-14 17:04:36,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3202 conditions, 1368 events. 300/1368 cut-off events. For 892/932 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10113 event pairs, 66 based on Foata normal form. 10/1332 useless extension candidates. Maximal degree in co-relation 2983. Up to 443 conditions per place. [2024-10-14 17:04:36,818 INFO L140 encePairwiseOnDemand]: 91/102 looper letters, 79 selfloop transitions, 49 changer transitions 0/247 dead transitions. [2024-10-14 17:04:36,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 247 transitions, 1437 flow [2024-10-14 17:04:36,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:04:36,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:04:36,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 526 transitions. [2024-10-14 17:04:36,820 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8594771241830066 [2024-10-14 17:04:36,820 INFO L175 Difference]: Start difference. First operand has 180 places, 181 transitions, 882 flow. Second operand 6 states and 526 transitions. [2024-10-14 17:04:36,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 247 transitions, 1437 flow [2024-10-14 17:04:36,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 247 transitions, 1391 flow, removed 5 selfloop flow, removed 18 redundant places. [2024-10-14 17:04:36,827 INFO L231 Difference]: Finished difference. Result has 171 places, 222 transitions, 1252 flow [2024-10-14 17:04:36,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1252, PETRI_PLACES=171, PETRI_TRANSITIONS=222} [2024-10-14 17:04:36,828 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 70 predicate places. [2024-10-14 17:04:36,828 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 222 transitions, 1252 flow [2024-10-14 17:04:36,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.5) internal successors, (471), 6 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:36,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:04:36,829 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:04:36,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 17:04:36,829 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:04:36,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:04:36,829 INFO L85 PathProgramCache]: Analyzing trace with hash 621326265, now seen corresponding path program 1 times [2024-10-14 17:04:36,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:04:36,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475766064] [2024-10-14 17:04:36,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:36,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:04:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:37,243 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-14 17:04:37,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:04:37,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475766064] [2024-10-14 17:04:37,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475766064] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:04:37,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:04:37,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:04:37,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940633929] [2024-10-14 17:04:37,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:04:37,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:04:37,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:04:37,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:04:37,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:04:37,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 102 [2024-10-14 17:04:37,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 222 transitions, 1252 flow. Second operand has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:37,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:04:37,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 102 [2024-10-14 17:04:37,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:04:37,870 INFO L124 PetriNetUnfolderBase]: 569/2144 cut-off events. [2024-10-14 17:04:37,870 INFO L125 PetriNetUnfolderBase]: For 2485/2542 co-relation queries the response was YES. [2024-10-14 17:04:37,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5774 conditions, 2144 events. 569/2144 cut-off events. For 2485/2542 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 17271 event pairs, 130 based on Foata normal form. 12/2071 useless extension candidates. Maximal degree in co-relation 5572. Up to 803 conditions per place. [2024-10-14 17:04:37,879 INFO L140 encePairwiseOnDemand]: 87/102 looper letters, 118 selfloop transitions, 78 changer transitions 11/316 dead transitions. [2024-10-14 17:04:37,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 316 transitions, 2190 flow [2024-10-14 17:04:37,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:04:37,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:04:37,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 512 transitions. [2024-10-14 17:04:37,881 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8366013071895425 [2024-10-14 17:04:37,881 INFO L175 Difference]: Start difference. First operand has 171 places, 222 transitions, 1252 flow. Second operand 6 states and 512 transitions. [2024-10-14 17:04:37,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 316 transitions, 2190 flow [2024-10-14 17:04:37,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 316 transitions, 2188 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-14 17:04:37,896 INFO L231 Difference]: Finished difference. Result has 180 places, 270 transitions, 1856 flow [2024-10-14 17:04:37,897 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1250, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1856, PETRI_PLACES=180, PETRI_TRANSITIONS=270} [2024-10-14 17:04:37,898 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 79 predicate places. [2024-10-14 17:04:37,899 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 270 transitions, 1856 flow [2024-10-14 17:04:37,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:37,900 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:04:37,900 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:04:37,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 17:04:37,900 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:04:37,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:04:37,901 INFO L85 PathProgramCache]: Analyzing trace with hash 504951150, now seen corresponding path program 1 times [2024-10-14 17:04:37,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:04:37,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040914418] [2024-10-14 17:04:37,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:37,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:04:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:38,555 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-14 17:04:38,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:04:38,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040914418] [2024-10-14 17:04:38,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040914418] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:04:38,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:04:38,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 17:04:38,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313607988] [2024-10-14 17:04:38,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:04:38,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 17:04:38,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:04:38,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 17:04:38,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-14 17:04:38,950 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 102 [2024-10-14 17:04:38,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 270 transitions, 1856 flow. Second operand has 10 states, 10 states have (on average 68.1) internal successors, (681), 10 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:38,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:04:38,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 102 [2024-10-14 17:04:38,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:04:40,120 INFO L124 PetriNetUnfolderBase]: 1231/4463 cut-off events. [2024-10-14 17:04:40,120 INFO L125 PetriNetUnfolderBase]: For 9222/9462 co-relation queries the response was YES. [2024-10-14 17:04:40,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14336 conditions, 4463 events. 1231/4463 cut-off events. For 9222/9462 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 42315 event pairs, 134 based on Foata normal form. 159/4571 useless extension candidates. Maximal degree in co-relation 14118. Up to 893 conditions per place. [2024-10-14 17:04:40,143 INFO L140 encePairwiseOnDemand]: 80/102 looper letters, 363 selfloop transitions, 78 changer transitions 91/636 dead transitions. [2024-10-14 17:04:40,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 636 transitions, 5975 flow [2024-10-14 17:04:40,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 17:04:40,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-14 17:04:40,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1104 transitions. [2024-10-14 17:04:40,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.773109243697479 [2024-10-14 17:04:40,147 INFO L175 Difference]: Start difference. First operand has 180 places, 270 transitions, 1856 flow. Second operand 14 states and 1104 transitions. [2024-10-14 17:04:40,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 636 transitions, 5975 flow [2024-10-14 17:04:40,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 636 transitions, 5889 flow, removed 43 selfloop flow, removed 0 redundant places. [2024-10-14 17:04:40,189 INFO L231 Difference]: Finished difference. Result has 204 places, 343 transitions, 2895 flow [2024-10-14 17:04:40,189 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2895, PETRI_PLACES=204, PETRI_TRANSITIONS=343} [2024-10-14 17:04:40,190 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 103 predicate places. [2024-10-14 17:04:40,190 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 343 transitions, 2895 flow [2024-10-14 17:04:40,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.1) internal successors, (681), 10 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:40,191 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:04:40,191 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:04:40,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 17:04:40,191 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:04:40,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:04:40,191 INFO L85 PathProgramCache]: Analyzing trace with hash 291565136, now seen corresponding path program 2 times [2024-10-14 17:04:40,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:04:40,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116507821] [2024-10-14 17:04:40,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:40,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:04:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:41,205 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-14 17:04:41,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:04:41,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116507821] [2024-10-14 17:04:41,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116507821] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:04:41,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:04:41,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 17:04:41,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203820998] [2024-10-14 17:04:41,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:04:41,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 17:04:41,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:04:41,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 17:04:41,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-14 17:04:41,645 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 102 [2024-10-14 17:04:41,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 343 transitions, 2895 flow. Second operand has 10 states, 10 states have (on average 68.1) internal successors, (681), 10 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:41,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:04:41,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 102 [2024-10-14 17:04:41,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:04:42,720 INFO L124 PetriNetUnfolderBase]: 1320/4743 cut-off events. [2024-10-14 17:04:42,720 INFO L125 PetriNetUnfolderBase]: For 14844/15130 co-relation queries the response was YES. [2024-10-14 17:04:42,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17833 conditions, 4743 events. 1320/4743 cut-off events. For 14844/15130 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 46068 event pairs, 220 based on Foata normal form. 247/4943 useless extension candidates. Maximal degree in co-relation 17604. Up to 1061 conditions per place. [2024-10-14 17:04:42,758 INFO L140 encePairwiseOnDemand]: 81/102 looper letters, 226 selfloop transitions, 151 changer transitions 77/558 dead transitions. [2024-10-14 17:04:42,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 558 transitions, 5787 flow [2024-10-14 17:04:42,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 17:04:42,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-14 17:04:42,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 999 transitions. [2024-10-14 17:04:42,761 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.753393665158371 [2024-10-14 17:04:42,761 INFO L175 Difference]: Start difference. First operand has 204 places, 343 transitions, 2895 flow. Second operand 13 states and 999 transitions. [2024-10-14 17:04:42,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 558 transitions, 5787 flow [2024-10-14 17:04:42,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 558 transitions, 5781 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-14 17:04:42,845 INFO L231 Difference]: Finished difference. Result has 220 places, 382 transitions, 3833 flow [2024-10-14 17:04:42,846 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=2891, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3833, PETRI_PLACES=220, PETRI_TRANSITIONS=382} [2024-10-14 17:04:42,846 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 119 predicate places. [2024-10-14 17:04:42,846 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 382 transitions, 3833 flow [2024-10-14 17:04:42,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.1) internal successors, (681), 10 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:42,847 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:04:42,847 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:04:42,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 17:04:42,847 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:04:42,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:04:42,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1363687538, now seen corresponding path program 3 times [2024-10-14 17:04:42,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:04:42,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859936533] [2024-10-14 17:04:42,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:42,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:04:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:43,594 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-14 17:04:43,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:04:43,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859936533] [2024-10-14 17:04:43,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859936533] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:04:43,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:04:43,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 17:04:43,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462244637] [2024-10-14 17:04:43,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:04:43,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 17:04:43,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:04:43,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 17:04:43,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-14 17:04:44,126 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 102 [2024-10-14 17:04:44,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 382 transitions, 3833 flow. Second operand has 10 states, 10 states have (on average 68.1) internal successors, (681), 10 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:44,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:04:44,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 102 [2024-10-14 17:04:44,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:04:46,062 INFO L124 PetriNetUnfolderBase]: 2269/7510 cut-off events. [2024-10-14 17:04:46,063 INFO L125 PetriNetUnfolderBase]: For 40684/41149 co-relation queries the response was YES. [2024-10-14 17:04:46,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33850 conditions, 7510 events. 2269/7510 cut-off events. For 40684/41149 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 78614 event pairs, 278 based on Foata normal form. 251/7669 useless extension candidates. Maximal degree in co-relation 33613. Up to 1482 conditions per place. [2024-10-14 17:04:46,112 INFO L140 encePairwiseOnDemand]: 84/102 looper letters, 475 selfloop transitions, 157 changer transitions 58/794 dead transitions. [2024-10-14 17:04:46,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 794 transitions, 9967 flow [2024-10-14 17:04:46,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 17:04:46,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-14 17:04:46,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1150 transitions. [2024-10-14 17:04:46,114 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7516339869281046 [2024-10-14 17:04:46,114 INFO L175 Difference]: Start difference. First operand has 220 places, 382 transitions, 3833 flow. Second operand 15 states and 1150 transitions. [2024-10-14 17:04:46,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 794 transitions, 9967 flow [2024-10-14 17:04:46,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 794 transitions, 9859 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-10-14 17:04:46,354 INFO L231 Difference]: Finished difference. Result has 237 places, 480 transitions, 5846 flow [2024-10-14 17:04:46,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=3804, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5846, PETRI_PLACES=237, PETRI_TRANSITIONS=480} [2024-10-14 17:04:46,355 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 136 predicate places. [2024-10-14 17:04:46,355 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 480 transitions, 5846 flow [2024-10-14 17:04:46,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.1) internal successors, (681), 10 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:46,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:04:46,355 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:04:46,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 17:04:46,356 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:04:46,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:04:46,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1713187702, now seen corresponding path program 4 times [2024-10-14 17:04:46,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:04:46,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924019430] [2024-10-14 17:04:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:04:46,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:04:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:04:56,335 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:04:56,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:04:56,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924019430] [2024-10-14 17:04:56,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924019430] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:04:56,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640774268] [2024-10-14 17:04:56,337 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 17:04:56,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:04:56,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:04:56,341 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:04:56,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 17:04:56,443 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 17:04:56,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 17:04:56,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-10-14 17:04:56,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:04:56,500 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 16 treesize of output 12 [2024-10-14 17:04:56,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-14 17:04:56,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-10-14 17:04:56,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2024-10-14 17:04:56,812 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-14 17:04:56,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 25 treesize of output 11 [2024-10-14 17:04:56,838 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 17:04:56,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-10-14 17:04:56,883 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2024-10-14 17:04:56,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 63 treesize of output 71 [2024-10-14 17:04:56,963 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 17:04:56,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:04:57,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 47 [2024-10-14 17:04:57,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-10-14 17:04:57,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 8 [2024-10-14 17:04:57,521 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-14 17:04:57,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640774268] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 17:04:57,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 17:04:57,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [35, 25] total 48 [2024-10-14 17:04:57,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849607885] [2024-10-14 17:04:57,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:04:57,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 17:04:57,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:04:57,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 17:04:57,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=2162, Unknown=0, NotChecked=0, Total=2352 [2024-10-14 17:04:57,823 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 102 [2024-10-14 17:04:57,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 480 transitions, 5846 flow. Second operand has 10 states, 10 states have (on average 66.1) internal successors, (661), 10 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:04:57,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:04:57,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 102 [2024-10-14 17:04:57,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:05:00,667 INFO L124 PetriNetUnfolderBase]: 3160/9689 cut-off events. [2024-10-14 17:05:00,667 INFO L125 PetriNetUnfolderBase]: For 68281/69166 co-relation queries the response was YES. [2024-10-14 17:05:00,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47950 conditions, 9689 events. 3160/9689 cut-off events. For 68281/69166 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 102361 event pairs, 314 based on Foata normal form. 427/10023 useless extension candidates. Maximal degree in co-relation 47737. Up to 1971 conditions per place. [2024-10-14 17:05:00,743 INFO L140 encePairwiseOnDemand]: 76/102 looper letters, 555 selfloop transitions, 320 changer transitions 65/1034 dead transitions. [2024-10-14 17:05:00,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 1034 transitions, 13897 flow [2024-10-14 17:05:00,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-14 17:05:00,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-14 17:05:00,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1443 transitions. [2024-10-14 17:05:00,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7445820433436533 [2024-10-14 17:05:00,746 INFO L175 Difference]: Start difference. First operand has 237 places, 480 transitions, 5846 flow. Second operand 19 states and 1443 transitions. [2024-10-14 17:05:00,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 1034 transitions, 13897 flow [2024-10-14 17:05:01,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 1034 transitions, 13713 flow, removed 75 selfloop flow, removed 5 redundant places. [2024-10-14 17:05:01,215 INFO L231 Difference]: Finished difference. Result has 263 places, 644 transitions, 9527 flow [2024-10-14 17:05:01,216 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=5745, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9527, PETRI_PLACES=263, PETRI_TRANSITIONS=644} [2024-10-14 17:05:01,216 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 162 predicate places. [2024-10-14 17:05:01,216 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 644 transitions, 9527 flow [2024-10-14 17:05:01,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 66.1) internal successors, (661), 10 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:05:01,217 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:05:01,217 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:05:01,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-14 17:05:01,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:05:01,418 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:05:01,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:05:01,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1856888934, now seen corresponding path program 5 times [2024-10-14 17:05:01,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:05:01,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885402058] [2024-10-14 17:05:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:05:01,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:05:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:05:09,552 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:05:09,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:05:09,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885402058] [2024-10-14 17:05:09,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885402058] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:05:09,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461590008] [2024-10-14 17:05:09,553 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 17:05:09,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:05:09,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:05:09,555 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:05:09,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 17:05:09,687 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-10-14 17:05:09,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 17:05:09,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-10-14 17:05:09,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:05:09,736 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 16 treesize of output 12 [2024-10-14 17:05:09,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-14 17:05:09,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-10-14 17:05:09,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2024-10-14 17:05:10,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2024-10-14 17:05:10,148 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-14 17:05:10,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 25 treesize of output 11 [2024-10-14 17:05:10,191 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2024-10-14 17:05:10,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 63 treesize of output 71 [2024-10-14 17:05:10,270 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-14 17:05:10,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:05:10,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 47 [2024-10-14 17:05:10,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-10-14 17:05:10,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 8 [2024-10-14 17:05:10,787 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-14 17:05:10,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461590008] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 17:05:10,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 17:05:10,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [35, 23] total 49 [2024-10-14 17:05:10,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132757211] [2024-10-14 17:05:10,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:05:10,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 17:05:10,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:05:10,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 17:05:10,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2250, Unknown=0, NotChecked=0, Total=2450 [2024-10-14 17:05:11,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 102 [2024-10-14 17:05:11,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 644 transitions, 9527 flow. Second operand has 10 states, 10 states have (on average 66.1) internal successors, (661), 10 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:05:11,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:05:11,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 102 [2024-10-14 17:05:11,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:05:14,938 INFO L124 PetriNetUnfolderBase]: 3794/11280 cut-off events. [2024-10-14 17:05:14,938 INFO L125 PetriNetUnfolderBase]: For 106956/107960 co-relation queries the response was YES. [2024-10-14 17:05:14,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61896 conditions, 11280 events. 3794/11280 cut-off events. For 106956/107960 co-relation queries the response was YES. Maximal size of possible extension queue 846. Compared 121545 event pairs, 357 based on Foata normal form. 435/11596 useless extension candidates. Maximal degree in co-relation 61638. Up to 2261 conditions per place. [2024-10-14 17:05:15,024 INFO L140 encePairwiseOnDemand]: 75/102 looper letters, 688 selfloop transitions, 375 changer transitions 70/1227 dead transitions. [2024-10-14 17:05:15,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 1227 transitions, 18041 flow [2024-10-14 17:05:15,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-14 17:05:15,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-14 17:05:15,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1339 transitions. [2024-10-14 17:05:15,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7722029988465975 [2024-10-14 17:05:15,027 INFO L175 Difference]: Start difference. First operand has 263 places, 644 transitions, 9527 flow. Second operand 17 states and 1339 transitions. [2024-10-14 17:05:15,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 1227 transitions, 18041 flow [2024-10-14 17:05:15,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 1227 transitions, 17745 flow, removed 62 selfloop flow, removed 4 redundant places. [2024-10-14 17:05:15,826 INFO L231 Difference]: Finished difference. Result has 287 places, 764 transitions, 12478 flow [2024-10-14 17:05:15,826 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=9260, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=12478, PETRI_PLACES=287, PETRI_TRANSITIONS=764} [2024-10-14 17:05:15,827 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 186 predicate places. [2024-10-14 17:05:15,827 INFO L471 AbstractCegarLoop]: Abstraction has has 287 places, 764 transitions, 12478 flow [2024-10-14 17:05:15,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 66.1) internal successors, (661), 10 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:05:15,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:05:15,827 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:05:15,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 17:05:16,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:05:16,032 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:05:16,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:05:16,033 INFO L85 PathProgramCache]: Analyzing trace with hash -383903984, now seen corresponding path program 6 times [2024-10-14 17:05:16,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:05:16,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894187760] [2024-10-14 17:05:16,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:05:16,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:05:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:05:16,502 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-14 17:05:16,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:05:16,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894187760] [2024-10-14 17:05:16,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894187760] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:05:16,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:05:16,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 17:05:16,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729580931] [2024-10-14 17:05:16,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:05:16,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 17:05:16,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:05:16,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 17:05:16,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-14 17:05:16,874 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 102 [2024-10-14 17:05:16,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 764 transitions, 12478 flow. Second operand has 10 states, 10 states have (on average 68.1) internal successors, (681), 10 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:05:16,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:05:16,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 102 [2024-10-14 17:05:16,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:05:19,998 INFO L124 PetriNetUnfolderBase]: 3624/11534 cut-off events. [2024-10-14 17:05:19,998 INFO L125 PetriNetUnfolderBase]: For 146843/147833 co-relation queries the response was YES. [2024-10-14 17:05:20,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68589 conditions, 11534 events. 3624/11534 cut-off events. For 146843/147833 co-relation queries the response was YES. Maximal size of possible extension queue 880. Compared 129204 event pairs, 596 based on Foata normal form. 467/11844 useless extension candidates. Maximal degree in co-relation 68318. Up to 2619 conditions per place. [2024-10-14 17:05:20,123 INFO L140 encePairwiseOnDemand]: 83/102 looper letters, 408 selfloop transitions, 392 changer transitions 38/944 dead transitions. [2024-10-14 17:05:20,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 944 transitions, 16675 flow [2024-10-14 17:05:20,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 17:05:20,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-14 17:05:20,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 991 transitions. [2024-10-14 17:05:20,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7473604826546003 [2024-10-14 17:05:20,125 INFO L175 Difference]: Start difference. First operand has 287 places, 764 transitions, 12478 flow. Second operand 13 states and 991 transitions. [2024-10-14 17:05:20,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 944 transitions, 16675 flow [2024-10-14 17:05:21,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 944 transitions, 16359 flow, removed 102 selfloop flow, removed 2 redundant places. [2024-10-14 17:05:21,291 INFO L231 Difference]: Finished difference. Result has 306 places, 809 transitions, 14312 flow [2024-10-14 17:05:21,292 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=12190, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=351, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14312, PETRI_PLACES=306, PETRI_TRANSITIONS=809} [2024-10-14 17:05:21,293 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 205 predicate places. [2024-10-14 17:05:21,293 INFO L471 AbstractCegarLoop]: Abstraction has has 306 places, 809 transitions, 14312 flow [2024-10-14 17:05:21,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.1) internal successors, (681), 10 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:05:21,293 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:05:21,293 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:05:21,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 17:05:21,294 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:05:21,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:05:21,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1510066717, now seen corresponding path program 1 times [2024-10-14 17:05:21,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:05:21,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909727882] [2024-10-14 17:05:21,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:05:21,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:05:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:05:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-14 17:05:21,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:05:21,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909727882] [2024-10-14 17:05:21,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909727882] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:05:21,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:05:21,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 17:05:21,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457676335] [2024-10-14 17:05:21,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:05:21,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 17:05:21,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:05:21,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 17:05:21,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-14 17:05:22,026 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 102 [2024-10-14 17:05:22,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 809 transitions, 14312 flow. Second operand has 10 states, 10 states have (on average 72.5) internal successors, (725), 10 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:05:22,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:05:22,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 102 [2024-10-14 17:05:22,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:05:24,954 INFO L124 PetriNetUnfolderBase]: 3194/10819 cut-off events. [2024-10-14 17:05:24,955 INFO L125 PetriNetUnfolderBase]: For 162499/163467 co-relation queries the response was YES. [2024-10-14 17:05:25,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65777 conditions, 10819 events. 3194/10819 cut-off events. For 162499/163467 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 124589 event pairs, 280 based on Foata normal form. 429/11118 useless extension candidates. Maximal degree in co-relation 65497. Up to 2168 conditions per place. [2024-10-14 17:05:25,063 INFO L140 encePairwiseOnDemand]: 85/102 looper letters, 678 selfloop transitions, 171 changer transitions 95/1205 dead transitions. [2024-10-14 17:05:25,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 1205 transitions, 22834 flow [2024-10-14 17:05:25,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 17:05:25,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-14 17:05:25,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1256 transitions. [2024-10-14 17:05:25,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7696078431372549 [2024-10-14 17:05:25,065 INFO L175 Difference]: Start difference. First operand has 306 places, 809 transitions, 14312 flow. Second operand 16 states and 1256 transitions. [2024-10-14 17:05:25,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 1205 transitions, 22834 flow [2024-10-14 17:05:26,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 1205 transitions, 22359 flow, removed 85 selfloop flow, removed 5 redundant places. [2024-10-14 17:05:26,421 INFO L231 Difference]: Finished difference. Result has 329 places, 860 transitions, 15170 flow [2024-10-14 17:05:26,422 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=13981, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=809, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=15170, PETRI_PLACES=329, PETRI_TRANSITIONS=860} [2024-10-14 17:05:26,423 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 228 predicate places. [2024-10-14 17:05:26,423 INFO L471 AbstractCegarLoop]: Abstraction has has 329 places, 860 transitions, 15170 flow [2024-10-14 17:05:26,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 72.5) internal successors, (725), 10 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:05:26,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:05:26,424 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:05:26,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 17:05:26,424 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:05:26,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:05:26,425 INFO L85 PathProgramCache]: Analyzing trace with hash -233936112, now seen corresponding path program 7 times [2024-10-14 17:05:26,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:05:26,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470822176] [2024-10-14 17:05:26,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:05:26,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:05:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:05:33,950 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:05:33,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:05:33,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470822176] [2024-10-14 17:05:33,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470822176] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:05:33,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101339198] [2024-10-14 17:05:33,951 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 17:05:33,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:05:33,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:05:33,953 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:05:33,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 17:05:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:05:34,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-10-14 17:05:34,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:05:34,245 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 16 treesize of output 12 [2024-10-14 17:05:34,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-14 17:05:34,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-10-14 17:05:34,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2024-10-14 17:05:34,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2024-10-14 17:05:34,591 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-14 17:05:34,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 25 treesize of output 11 [2024-10-14 17:05:34,621 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2024-10-14 17:05:34,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 63 treesize of output 71 [2024-10-14 17:05:34,682 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 17:05:34,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:05:35,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 47 [2024-10-14 17:05:35,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-10-14 17:05:35,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 8 [2024-10-14 17:05:35,112 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-14 17:05:35,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101339198] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 17:05:35,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 17:05:35,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [35, 25] total 49 [2024-10-14 17:05:35,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954241285] [2024-10-14 17:05:35,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:05:35,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 17:05:35,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:05:35,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 17:05:35,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=2255, Unknown=0, NotChecked=0, Total=2450 [2024-10-14 17:05:35,612 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 102 [2024-10-14 17:05:35,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 860 transitions, 15170 flow. Second operand has 10 states, 10 states have (on average 66.1) internal successors, (661), 10 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:05:35,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:05:35,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 102 [2024-10-14 17:05:35,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:05:40,812 INFO L124 PetriNetUnfolderBase]: 4148/12980 cut-off events. [2024-10-14 17:05:40,813 INFO L125 PetriNetUnfolderBase]: For 211168/212149 co-relation queries the response was YES. [2024-10-14 17:05:40,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84585 conditions, 12980 events. 4148/12980 cut-off events. For 211168/212149 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 146497 event pairs, 441 based on Foata normal form. 353/13224 useless extension candidates. Maximal degree in co-relation 84294. Up to 2488 conditions per place. [2024-10-14 17:05:40,974 INFO L140 encePairwiseOnDemand]: 75/102 looper letters, 850 selfloop transitions, 514 changer transitions 94/1552 dead transitions. [2024-10-14 17:05:40,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 1552 transitions, 28204 flow [2024-10-14 17:05:40,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-14 17:05:40,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-14 17:05:40,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1720 transitions. [2024-10-14 17:05:40,976 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7664884135472371 [2024-10-14 17:05:40,977 INFO L175 Difference]: Start difference. First operand has 329 places, 860 transitions, 15170 flow. Second operand 22 states and 1720 transitions. [2024-10-14 17:05:40,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 1552 transitions, 28204 flow [2024-10-14 17:05:42,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 1552 transitions, 27944 flow, removed 83 selfloop flow, removed 2 redundant places. [2024-10-14 17:05:42,670 INFO L231 Difference]: Finished difference. Result has 361 places, 1027 transitions, 20022 flow [2024-10-14 17:05:42,671 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=15036, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=860, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=348, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=20022, PETRI_PLACES=361, PETRI_TRANSITIONS=1027} [2024-10-14 17:05:42,671 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 260 predicate places. [2024-10-14 17:05:42,671 INFO L471 AbstractCegarLoop]: Abstraction has has 361 places, 1027 transitions, 20022 flow [2024-10-14 17:05:42,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 66.1) internal successors, (661), 10 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:05:42,672 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:05:42,672 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:05:42,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-14 17:05:42,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-14 17:05:42,877 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 17:05:42,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:05:42,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1630363942, now seen corresponding path program 8 times [2024-10-14 17:05:42,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:05:42,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144768883] [2024-10-14 17:05:42,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:05:42,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:05:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:05:46,835 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:05:46,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:05:46,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144768883] [2024-10-14 17:05:46,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144768883] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:05:46,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611842610] [2024-10-14 17:05:46,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 17:05:46,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:05:46,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:05:46,837 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:05:46,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 17:05:46,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 17:05:46,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 17:05:46,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-14 17:05:46,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:05:46,933 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 16 treesize of output 12 [2024-10-14 17:05:47,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-14 17:05:47,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-10-14 17:05:47,180 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-14 17:05:47,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 25 treesize of output 11 [2024-10-14 17:05:47,209 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2024-10-14 17:05:47,210 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 2 case distinctions, treesize of input 39 treesize of output 41 [2024-10-14 17:05:47,270 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-14 17:05:47,270 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 51 treesize of output 56 [2024-10-14 17:05:47,337 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-14 17:05:47,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 71 [2024-10-14 17:05:47,406 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-14 17:05:47,406 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 17:05:47,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611842610] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:05:47,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 17:05:47,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [33] total 40 [2024-10-14 17:05:47,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975205807] [2024-10-14 17:05:47,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:05:47,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 17:05:47,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:05:47,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 17:05:47,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1508, Unknown=0, NotChecked=0, Total=1640