./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-race-challenges/thread-join-array-const-race-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-race-challenges/thread-join-array-const-race-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 860528881155a718438c0581485d42cc235131c30c9ba38f0a976304f206e75d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 10:04:12,585 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 10:04:12,648 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-13 10:04:12,655 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 10:04:12,656 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 10:04:12,681 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 10:04:12,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 10:04:12,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 10:04:12,682 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 10:04:12,683 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 10:04:12,683 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 10:04:12,684 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 10:04:12,684 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 10:04:12,684 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 10:04:12,685 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 10:04:12,685 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 10:04:12,685 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 10:04:12,686 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 10:04:12,686 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 10:04:12,686 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 10:04:12,687 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 10:04:12,687 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 10:04:12,688 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-13 10:04:12,688 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 10:04:12,688 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 10:04:12,689 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 10:04:12,689 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 10:04:12,689 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 10:04:12,689 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 10:04:12,690 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 10:04:12,690 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 10:04:12,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 10:04:12,691 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 10:04:12,691 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 10:04:12,691 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 10:04:12,691 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 10:04:12,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 10:04:12,692 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 10:04:12,692 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 10:04:12,692 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 10:04:12,693 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 10:04:12,693 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 860528881155a718438c0581485d42cc235131c30c9ba38f0a976304f206e75d [2024-10-13 10:04:12,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 10:04:13,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 10:04:13,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 10:04:13,017 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 10:04:13,018 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 10:04:13,020 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-race-challenges/thread-join-array-const-race-2.i [2024-10-13 10:04:14,504 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 10:04:14,801 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 10:04:14,802 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-race-challenges/thread-join-array-const-race-2.i [2024-10-13 10:04:14,822 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82ac69fa4/80acc48aa5fc4e03b78736d6050e7b55/FLAG0ca1ff5dc [2024-10-13 10:04:14,846 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82ac69fa4/80acc48aa5fc4e03b78736d6050e7b55 [2024-10-13 10:04:14,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 10:04:14,851 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 10:04:14,852 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 10:04:14,852 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 10:04:14,857 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 10:04:14,858 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:04:14" (1/1) ... [2024-10-13 10:04:14,861 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27f8fcf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:04:14, skipping insertion in model container [2024-10-13 10:04:14,861 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:04:14" (1/1) ... [2024-10-13 10:04:14,909 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 10:04:15,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 10:04:15,305 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 10:04:15,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 10:04:15,422 INFO L204 MainTranslator]: Completed translation [2024-10-13 10:04:15,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:04:15 WrapperNode [2024-10-13 10:04:15,423 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 10:04:15,424 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 10:04:15,424 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 10:04:15,424 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 10:04:15,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:04:15" (1/1) ... [2024-10-13 10:04:15,444 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:04:15" (1/1) ... [2024-10-13 10:04:15,467 INFO L138 Inliner]: procedures = 158, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 59 [2024-10-13 10:04:15,468 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 10:04:15,469 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 10:04:15,469 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 10:04:15,469 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 10:04:15,478 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:04:15" (1/1) ... [2024-10-13 10:04:15,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:04:15" (1/1) ... [2024-10-13 10:04:15,482 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:04:15" (1/1) ... [2024-10-13 10:04:15,485 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:04:15" (1/1) ... [2024-10-13 10:04:15,494 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:04:15" (1/1) ... [2024-10-13 10:04:15,498 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:04:15" (1/1) ... [2024-10-13 10:04:15,500 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:04:15" (1/1) ... [2024-10-13 10:04:15,501 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:04:15" (1/1) ... [2024-10-13 10:04:15,503 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 10:04:15,504 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 10:04:15,504 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 10:04:15,504 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 10:04:15,505 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:04:15" (1/1) ... [2024-10-13 10:04:15,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 10:04:15,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:04:15,537 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) [2024-10-13 10:04:15,539 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 [2024-10-13 10:04:15,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-13 10:04:15,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-13 10:04:15,583 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 10:04:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 10:04:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 10:04:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 10:04:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-13 10:04:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2024-10-13 10:04:15,584 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2024-10-13 10:04:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 10:04:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 10:04:15,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 10:04:15,587 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 10:04:15,716 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 10:04:15,720 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 10:04:15,932 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 10:04:15,936 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 10:04:15,956 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 10:04:15,957 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 10:04:15,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:04:15 BoogieIcfgContainer [2024-10-13 10:04:15,957 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 10:04:15,959 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 10:04:15,959 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 10:04:15,963 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 10:04:15,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:04:14" (1/3) ... [2024-10-13 10:04:15,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@455a7c38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:04:15, skipping insertion in model container [2024-10-13 10:04:15,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:04:15" (2/3) ... [2024-10-13 10:04:15,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@455a7c38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:04:15, skipping insertion in model container [2024-10-13 10:04:15,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:04:15" (3/3) ... [2024-10-13 10:04:15,966 INFO L112 eAbstractionObserver]: Analyzing ICFG thread-join-array-const-race-2.i [2024-10-13 10:04:15,982 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 10:04:15,982 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-13 10:04:15,982 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 10:04:16,049 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-13 10:04:16,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 77 transitions, 161 flow [2024-10-13 10:04:16,120 INFO L124 PetriNetUnfolderBase]: 5/112 cut-off events. [2024-10-13 10:04:16,120 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 10:04:16,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 112 events. 5/112 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 216 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2024-10-13 10:04:16,126 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 77 transitions, 161 flow [2024-10-13 10:04:16,131 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 77 transitions, 161 flow [2024-10-13 10:04:16,143 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 10:04:16,151 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;@2ba36091, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 10:04:16,151 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-13 10:04:16,164 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 10:04:16,164 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2024-10-13 10:04:16,164 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 10:04:16,164 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:16,165 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:16,166 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2024-10-13 10:04:16,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:16,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1063124316, now seen corresponding path program 1 times [2024-10-13 10:04:16,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:16,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215005234] [2024-10-13 10:04:16,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:16,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:16,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:16,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:16,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215005234] [2024-10-13 10:04:16,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215005234] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:16,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:16,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 10:04:16,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858718336] [2024-10-13 10:04:16,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:16,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 10:04:16,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:16,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 10:04:16,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 10:04:16,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 77 [2024-10-13 10:04:16,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:16,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:16,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 77 [2024-10-13 10:04:16,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:16,681 INFO L124 PetriNetUnfolderBase]: 8/185 cut-off events. [2024-10-13 10:04:16,682 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 10:04:16,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 185 events. 8/185 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 577 event pairs, 0 based on Foata normal form. 5/170 useless extension candidates. Maximal degree in co-relation 155. Up to 17 conditions per place. [2024-10-13 10:04:16,687 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 10 selfloop transitions, 4 changer transitions 1/79 dead transitions. [2024-10-13 10:04:16,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 195 flow [2024-10-13 10:04:16,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 10:04:16,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 10:04:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 275 transitions. [2024-10-13 10:04:16,705 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8928571428571429 [2024-10-13 10:04:16,707 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 161 flow. Second operand 4 states and 275 transitions. [2024-10-13 10:04:16,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 195 flow [2024-10-13 10:04:16,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 195 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 10:04:16,716 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 169 flow [2024-10-13 10:04:16,722 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-10-13 10:04:16,725 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-10-13 10:04:16,728 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 169 flow [2024-10-13 10:04:16,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:16,729 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:16,729 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:16,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 10:04:16,730 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2024-10-13 10:04:16,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:16,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1998489104, now seen corresponding path program 1 times [2024-10-13 10:04:16,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:16,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521591926] [2024-10-13 10:04:16,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:16,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:17,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:17,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:17,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521591926] [2024-10-13 10:04:17,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521591926] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:17,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:17,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 10:04:17,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403616970] [2024-10-13 10:04:17,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:17,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 10:04:17,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:17,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 10:04:17,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 10:04:17,479 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 77 [2024-10-13 10:04:17,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 169 flow. Second operand has 6 states, 6 states have (on average 53.5) internal successors, (321), 6 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:17,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:17,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 77 [2024-10-13 10:04:17,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:17,595 INFO L124 PetriNetUnfolderBase]: 30/233 cut-off events. [2024-10-13 10:04:17,596 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-13 10:04:17,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 233 events. 30/233 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 945 event pairs, 4 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 273. Up to 62 conditions per place. [2024-10-13 10:04:17,598 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 25 selfloop transitions, 5 changer transitions 0/82 dead transitions. [2024-10-13 10:04:17,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 243 flow [2024-10-13 10:04:17,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 10:04:17,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 10:04:17,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 343 transitions. [2024-10-13 10:04:17,604 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7424242424242424 [2024-10-13 10:04:17,604 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 169 flow. Second operand 6 states and 343 transitions. [2024-10-13 10:04:17,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 82 transitions, 243 flow [2024-10-13 10:04:17,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 82 transitions, 235 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 10:04:17,608 INFO L231 Difference]: Finished difference. Result has 82 places, 74 transitions, 169 flow [2024-10-13 10:04:17,609 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=169, PETRI_PLACES=82, PETRI_TRANSITIONS=74} [2024-10-13 10:04:17,610 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 5 predicate places. [2024-10-13 10:04:17,610 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 74 transitions, 169 flow [2024-10-13 10:04:17,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.5) internal successors, (321), 6 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:17,610 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:17,611 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] [2024-10-13 10:04:17,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 10:04:17,611 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2024-10-13 10:04:17,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:17,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1957567684, now seen corresponding path program 1 times [2024-10-13 10:04:17,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:17,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475180580] [2024-10-13 10:04:17,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:17,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:17,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:17,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:17,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475180580] [2024-10-13 10:04:17,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475180580] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:17,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:17,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 10:04:17,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360191357] [2024-10-13 10:04:17,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:17,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:04:17,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:17,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:04:17,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:04:17,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 77 [2024-10-13 10:04:17,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:17,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:17,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 77 [2024-10-13 10:04:17,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:17,716 INFO L124 PetriNetUnfolderBase]: 6/141 cut-off events. [2024-10-13 10:04:17,716 INFO L125 PetriNetUnfolderBase]: For 4/10 co-relation queries the response was YES. [2024-10-13 10:04:17,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 141 events. 6/141 cut-off events. For 4/10 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 379 event pairs, 4 based on Foata normal form. 1/130 useless extension candidates. Maximal degree in co-relation 134. Up to 21 conditions per place. [2024-10-13 10:04:17,719 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 9 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2024-10-13 10:04:17,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 77 transitions, 201 flow [2024-10-13 10:04:17,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:04:17,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:04:17,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 209 transitions. [2024-10-13 10:04:17,721 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2024-10-13 10:04:17,721 INFO L175 Difference]: Start difference. First operand has 82 places, 74 transitions, 169 flow. Second operand 3 states and 209 transitions. [2024-10-13 10:04:17,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 77 transitions, 201 flow [2024-10-13 10:04:17,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 77 transitions, 191 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 10:04:17,724 INFO L231 Difference]: Finished difference. Result has 81 places, 77 transitions, 189 flow [2024-10-13 10:04:17,724 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=81, PETRI_TRANSITIONS=77} [2024-10-13 10:04:17,725 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-10-13 10:04:17,725 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 77 transitions, 189 flow [2024-10-13 10:04:17,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:17,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:17,726 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:17,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 10:04:17,726 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2024-10-13 10:04:17,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:17,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1947567396, now seen corresponding path program 1 times [2024-10-13 10:04:17,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:17,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591602914] [2024-10-13 10:04:17,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:17,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 10:04:17,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:17,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591602914] [2024-10-13 10:04:17,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591602914] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:17,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:17,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 10:04:17,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722505215] [2024-10-13 10:04:17,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:17,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 10:04:17,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:17,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 10:04:17,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 10:04:17,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 77 [2024-10-13 10:04:17,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 77 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 65.5) internal successors, (262), 4 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:17,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:17,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 77 [2024-10-13 10:04:17,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:17,930 INFO L124 PetriNetUnfolderBase]: 2/106 cut-off events. [2024-10-13 10:04:17,930 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 10:04:17,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 106 events. 2/106 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 154 event pairs, 0 based on Foata normal form. 3/104 useless extension candidates. Maximal degree in co-relation 82. Up to 7 conditions per place. [2024-10-13 10:04:17,931 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 9 selfloop transitions, 3 changer transitions 7/75 dead transitions. [2024-10-13 10:04:17,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 199 flow [2024-10-13 10:04:17,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 10:04:17,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 10:04:17,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 270 transitions. [2024-10-13 10:04:17,934 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8766233766233766 [2024-10-13 10:04:17,934 INFO L175 Difference]: Start difference. First operand has 81 places, 77 transitions, 189 flow. Second operand 4 states and 270 transitions. [2024-10-13 10:04:17,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 75 transitions, 199 flow [2024-10-13 10:04:17,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 187 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-13 10:04:17,938 INFO L231 Difference]: Finished difference. Result has 80 places, 66 transitions, 153 flow [2024-10-13 10:04:17,939 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2024-10-13 10:04:17,940 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2024-10-13 10:04:17,941 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 66 transitions, 153 flow [2024-10-13 10:04:17,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.5) internal successors, (262), 4 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:17,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:17,941 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:17,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 10:04:17,942 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2024-10-13 10:04:17,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:17,944 INFO L85 PathProgramCache]: Analyzing trace with hash -226547286, now seen corresponding path program 1 times [2024-10-13 10:04:17,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:17,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457096686] [2024-10-13 10:04:17,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:17,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:18,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:18,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:18,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457096686] [2024-10-13 10:04:18,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457096686] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:04:18,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277519929] [2024-10-13 10:04:18,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:18,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:04:18,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:04:18,090 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) [2024-10-13 10:04:18,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 10:04:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:18,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 10:04:18,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:04:18,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:18,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:04:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:18,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277519929] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:04:18,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:04:18,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-13 10:04:18,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312706827] [2024-10-13 10:04:18,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:04:18,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 10:04:18,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:18,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 10:04:18,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-10-13 10:04:18,633 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 77 [2024-10-13 10:04:18,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 66 transitions, 153 flow. Second operand has 13 states, 13 states have (on average 62.92307692307692) internal successors, (818), 13 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:18,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:18,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 77 [2024-10-13 10:04:18,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:18,690 INFO L124 PetriNetUnfolderBase]: 8/97 cut-off events. [2024-10-13 10:04:18,691 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 10:04:18,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 97 events. 8/97 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 166 event pairs, 0 based on Foata normal form. 3/98 useless extension candidates. Maximal degree in co-relation 130. Up to 10 conditions per place. [2024-10-13 10:04:18,691 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 12 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-10-13 10:04:18,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 152 flow [2024-10-13 10:04:18,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 10:04:18,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 10:04:18,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 445 transitions. [2024-10-13 10:04:18,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8256029684601113 [2024-10-13 10:04:18,696 INFO L175 Difference]: Start difference. First operand has 80 places, 66 transitions, 153 flow. Second operand 7 states and 445 transitions. [2024-10-13 10:04:18,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 152 flow [2024-10-13 10:04:18,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 149 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 10:04:18,697 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 111 flow [2024-10-13 10:04:18,698 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=111, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2024-10-13 10:04:18,699 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, -18 predicate places. [2024-10-13 10:04:18,699 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 111 flow [2024-10-13 10:04:18,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 62.92307692307692) internal successors, (818), 13 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:18,700 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:18,703 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:18,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 10:04:18,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:04:18,905 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2024-10-13 10:04:18,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:18,905 INFO L85 PathProgramCache]: Analyzing trace with hash 414146859, now seen corresponding path program 1 times [2024-10-13 10:04:18,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:18,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359208722] [2024-10-13 10:04:18,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:18,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 10:04:18,926 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 10:04:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 10:04:18,958 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 10:04:18,958 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 10:04:18,959 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-10-13 10:04:18,962 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 6 remaining) [2024-10-13 10:04:18,962 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 6 remaining) [2024-10-13 10:04:18,962 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 6 remaining) [2024-10-13 10:04:18,963 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 6 remaining) [2024-10-13 10:04:18,963 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 6 remaining) [2024-10-13 10:04:18,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 10:04:18,963 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-10-13 10:04:18,966 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 10:04:18,966 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-13 10:04:18,989 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 10:04:18,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 95 transitions, 206 flow [2024-10-13 10:04:19,015 INFO L124 PetriNetUnfolderBase]: 10/197 cut-off events. [2024-10-13 10:04:19,015 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 10:04:19,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 197 events. 10/197 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 453 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 114. Up to 8 conditions per place. [2024-10-13 10:04:19,016 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 95 transitions, 206 flow [2024-10-13 10:04:19,018 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 95 transitions, 206 flow [2024-10-13 10:04:19,019 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 10:04:19,021 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;@2ba36091, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 10:04:19,023 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-13 10:04:19,026 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 10:04:19,026 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2024-10-13 10:04:19,026 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 10:04:19,026 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:19,026 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:19,026 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-13 10:04:19,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:19,027 INFO L85 PathProgramCache]: Analyzing trace with hash -2132165308, now seen corresponding path program 1 times [2024-10-13 10:04:19,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:19,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645463237] [2024-10-13 10:04:19,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:19,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:19,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:19,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:19,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645463237] [2024-10-13 10:04:19,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645463237] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:19,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:19,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 10:04:19,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924694280] [2024-10-13 10:04:19,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:19,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 10:04:19,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:19,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 10:04:19,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 10:04:19,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2024-10-13 10:04:19,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 95 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:19,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:19,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2024-10-13 10:04:19,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:19,220 INFO L124 PetriNetUnfolderBase]: 72/571 cut-off events. [2024-10-13 10:04:19,221 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-10-13 10:04:19,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 571 events. 72/571 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3318 event pairs, 35 based on Foata normal form. 16/538 useless extension candidates. Maximal degree in co-relation 336. Up to 106 conditions per place. [2024-10-13 10:04:19,229 INFO L140 encePairwiseOnDemand]: 88/95 looper letters, 18 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2024-10-13 10:04:19,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 100 transitions, 260 flow [2024-10-13 10:04:19,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 10:04:19,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 10:04:19,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 338 transitions. [2024-10-13 10:04:19,231 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8894736842105263 [2024-10-13 10:04:19,231 INFO L175 Difference]: Start difference. First operand has 96 places, 95 transitions, 206 flow. Second operand 4 states and 338 transitions. [2024-10-13 10:04:19,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 100 transitions, 260 flow [2024-10-13 10:04:19,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 100 transitions, 260 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 10:04:19,234 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 218 flow [2024-10-13 10:04:19,237 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2024-10-13 10:04:19,238 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 4 predicate places. [2024-10-13 10:04:19,238 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 218 flow [2024-10-13 10:04:19,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:19,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:19,238 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:19,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 10:04:19,239 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-13 10:04:19,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:19,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1678879695, now seen corresponding path program 1 times [2024-10-13 10:04:19,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:19,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812916883] [2024-10-13 10:04:19,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:19,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:19,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:19,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:19,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812916883] [2024-10-13 10:04:19,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812916883] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:19,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:19,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 10:04:19,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164218186] [2024-10-13 10:04:19,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:19,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 10:04:19,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:19,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 10:04:19,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 10:04:19,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 95 [2024-10-13 10:04:19,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 67.5) internal successors, (405), 6 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:19,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:19,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 95 [2024-10-13 10:04:19,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:19,750 INFO L124 PetriNetUnfolderBase]: 236/941 cut-off events. [2024-10-13 10:04:19,751 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-10-13 10:04:19,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 941 events. 236/941 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6505 event pairs, 91 based on Foata normal form. 0/875 useless extension candidates. Maximal degree in co-relation 443. Up to 313 conditions per place. [2024-10-13 10:04:19,761 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 38 selfloop transitions, 5 changer transitions 0/109 dead transitions. [2024-10-13 10:04:19,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 109 transitions, 334 flow [2024-10-13 10:04:19,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 10:04:19,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 10:04:19,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 439 transitions. [2024-10-13 10:04:19,764 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7701754385964912 [2024-10-13 10:04:19,764 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 218 flow. Second operand 6 states and 439 transitions. [2024-10-13 10:04:19,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 109 transitions, 334 flow [2024-10-13 10:04:19,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 109 transitions, 328 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 10:04:19,768 INFO L231 Difference]: Finished difference. Result has 102 places, 93 transitions, 220 flow [2024-10-13 10:04:19,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=102, PETRI_TRANSITIONS=93} [2024-10-13 10:04:19,769 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 6 predicate places. [2024-10-13 10:04:19,770 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 93 transitions, 220 flow [2024-10-13 10:04:19,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.5) internal successors, (405), 6 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:19,773 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:19,773 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] [2024-10-13 10:04:19,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 10:04:19,773 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-13 10:04:19,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:19,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1410162995, now seen corresponding path program 1 times [2024-10-13 10:04:19,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:19,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5127324] [2024-10-13 10:04:19,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:19,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:19,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:19,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:19,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5127324] [2024-10-13 10:04:19,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5127324] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:19,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:19,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 10:04:19,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350763990] [2024-10-13 10:04:19,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:19,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:04:19,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:19,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:04:19,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:04:19,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2024-10-13 10:04:19,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 93 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:19,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:19,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2024-10-13 10:04:19,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:19,947 INFO L124 PetriNetUnfolderBase]: 116/707 cut-off events. [2024-10-13 10:04:19,948 INFO L125 PetriNetUnfolderBase]: For 100/145 co-relation queries the response was YES. [2024-10-13 10:04:19,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1005 conditions, 707 events. 116/707 cut-off events. For 100/145 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4566 event pairs, 58 based on Foata normal form. 4/621 useless extension candidates. Maximal degree in co-relation 463. Up to 185 conditions per place. [2024-10-13 10:04:19,954 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 18 selfloop transitions, 5 changer transitions 0/101 dead transitions. [2024-10-13 10:04:19,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 101 transitions, 290 flow [2024-10-13 10:04:19,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:04:19,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:04:19,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2024-10-13 10:04:19,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9052631578947369 [2024-10-13 10:04:19,957 INFO L175 Difference]: Start difference. First operand has 102 places, 93 transitions, 220 flow. Second operand 3 states and 258 transitions. [2024-10-13 10:04:19,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 101 transitions, 290 flow [2024-10-13 10:04:19,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 101 transitions, 280 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 10:04:19,960 INFO L231 Difference]: Finished difference. Result has 101 places, 97 transitions, 248 flow [2024-10-13 10:04:19,961 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=101, PETRI_TRANSITIONS=97} [2024-10-13 10:04:19,962 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 5 predicate places. [2024-10-13 10:04:19,963 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 97 transitions, 248 flow [2024-10-13 10:04:19,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:19,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:19,964 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:19,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 10:04:19,964 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-13 10:04:19,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:19,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1750110091, now seen corresponding path program 1 times [2024-10-13 10:04:19,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:19,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257567484] [2024-10-13 10:04:19,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:19,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:20,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 10:04:20,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:20,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257567484] [2024-10-13 10:04:20,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257567484] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:20,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:20,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 10:04:20,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415924182] [2024-10-13 10:04:20,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:20,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 10:04:20,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:20,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 10:04:20,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 10:04:20,074 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2024-10-13 10:04:20,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 97 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:20,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:20,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2024-10-13 10:04:20,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:20,190 INFO L124 PetriNetUnfolderBase]: 63/580 cut-off events. [2024-10-13 10:04:20,190 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-10-13 10:04:20,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 810 conditions, 580 events. 63/580 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3221 event pairs, 24 based on Foata normal form. 15/544 useless extension candidates. Maximal degree in co-relation 632. Up to 72 conditions per place. [2024-10-13 10:04:20,194 INFO L140 encePairwiseOnDemand]: 90/95 looper letters, 19 selfloop transitions, 4 changer transitions 3/108 dead transitions. [2024-10-13 10:04:20,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 108 transitions, 328 flow [2024-10-13 10:04:20,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 10:04:20,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 10:04:20,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 339 transitions. [2024-10-13 10:04:20,195 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8921052631578947 [2024-10-13 10:04:20,196 INFO L175 Difference]: Start difference. First operand has 101 places, 97 transitions, 248 flow. Second operand 4 states and 339 transitions. [2024-10-13 10:04:20,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 108 transitions, 328 flow [2024-10-13 10:04:20,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 108 transitions, 318 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 10:04:20,199 INFO L231 Difference]: Finished difference. Result has 103 places, 98 transitions, 254 flow [2024-10-13 10:04:20,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=103, PETRI_TRANSITIONS=98} [2024-10-13 10:04:20,201 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 7 predicate places. [2024-10-13 10:04:20,201 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 98 transitions, 254 flow [2024-10-13 10:04:20,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:20,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:20,201 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:20,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 10:04:20,202 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-13 10:04:20,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:20,202 INFO L85 PathProgramCache]: Analyzing trace with hash -37645542, now seen corresponding path program 1 times [2024-10-13 10:04:20,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:20,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688969275] [2024-10-13 10:04:20,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:20,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:20,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:20,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:20,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688969275] [2024-10-13 10:04:20,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688969275] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:04:20,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721040874] [2024-10-13 10:04:20,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:20,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:04:20,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:04:20,328 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) [2024-10-13 10:04:20,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 10:04:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:20,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 10:04:20,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:04:20,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:20,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:04:20,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:20,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721040874] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:04:20,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:04:20,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-13 10:04:20,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167528516] [2024-10-13 10:04:20,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:04:20,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 10:04:20,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:20,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 10:04:20,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-10-13 10:04:20,748 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 95 [2024-10-13 10:04:20,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 98 transitions, 254 flow. Second operand has 13 states, 13 states have (on average 76.92307692307692) internal successors, (1000), 13 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:20,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:20,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 95 [2024-10-13 10:04:20,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:20,898 INFO L124 PetriNetUnfolderBase]: 81/421 cut-off events. [2024-10-13 10:04:20,898 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-10-13 10:04:20,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 421 events. 81/421 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2118 event pairs, 1 based on Foata normal form. 15/414 useless extension candidates. Maximal degree in co-relation 620. Up to 56 conditions per place. [2024-10-13 10:04:20,901 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 28 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2024-10-13 10:04:20,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 92 transitions, 290 flow [2024-10-13 10:04:20,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 10:04:20,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 10:04:20,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 788 transitions. [2024-10-13 10:04:20,904 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8294736842105264 [2024-10-13 10:04:20,904 INFO L175 Difference]: Start difference. First operand has 103 places, 98 transitions, 254 flow. Second operand 10 states and 788 transitions. [2024-10-13 10:04:20,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 92 transitions, 290 flow [2024-10-13 10:04:20,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 92 transitions, 289 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 10:04:20,907 INFO L231 Difference]: Finished difference. Result has 86 places, 72 transitions, 193 flow [2024-10-13 10:04:20,908 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=193, PETRI_PLACES=86, PETRI_TRANSITIONS=72} [2024-10-13 10:04:20,909 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, -10 predicate places. [2024-10-13 10:04:20,909 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 193 flow [2024-10-13 10:04:20,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 76.92307692307692) internal successors, (1000), 13 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:20,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:20,910 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:20,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 10:04:21,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-13 10:04:21,116 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-13 10:04:21,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:21,116 INFO L85 PathProgramCache]: Analyzing trace with hash -678681733, now seen corresponding path program 1 times [2024-10-13 10:04:21,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:21,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772997519] [2024-10-13 10:04:21,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:21,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:21,165 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 10:04:21,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:21,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772997519] [2024-10-13 10:04:21,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772997519] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:21,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:21,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 10:04:21,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682892054] [2024-10-13 10:04:21,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:21,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:04:21,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:21,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:04:21,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:04:21,180 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2024-10-13 10:04:21,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 72 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:21,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:21,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2024-10-13 10:04:21,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:21,228 INFO L124 PetriNetUnfolderBase]: 27/229 cut-off events. [2024-10-13 10:04:21,228 INFO L125 PetriNetUnfolderBase]: For 27/31 co-relation queries the response was YES. [2024-10-13 10:04:21,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 229 events. 27/229 cut-off events. For 27/31 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 824 event pairs, 16 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 360. Up to 55 conditions per place. [2024-10-13 10:04:21,230 INFO L140 encePairwiseOnDemand]: 90/95 looper letters, 13 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-10-13 10:04:21,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 77 transitions, 241 flow [2024-10-13 10:04:21,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:04:21,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:04:21,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 252 transitions. [2024-10-13 10:04:21,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8842105263157894 [2024-10-13 10:04:21,232 INFO L175 Difference]: Start difference. First operand has 86 places, 72 transitions, 193 flow. Second operand 3 states and 252 transitions. [2024-10-13 10:04:21,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 77 transitions, 241 flow [2024-10-13 10:04:21,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 77 transitions, 224 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-10-13 10:04:21,234 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 212 flow [2024-10-13 10:04:21,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2024-10-13 10:04:21,235 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, -12 predicate places. [2024-10-13 10:04:21,235 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 212 flow [2024-10-13 10:04:21,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:21,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:21,236 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:21,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 10:04:21,236 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-13 10:04:21,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:21,237 INFO L85 PathProgramCache]: Analyzing trace with hash 282277986, now seen corresponding path program 1 times [2024-10-13 10:04:21,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:21,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232474271] [2024-10-13 10:04:21,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:21,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 10:04:21,257 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 10:04:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 10:04:21,275 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 10:04:21,276 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 10:04:21,276 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-10-13 10:04:21,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2024-10-13 10:04:21,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2024-10-13 10:04:21,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2024-10-13 10:04:21,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2024-10-13 10:04:21,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2024-10-13 10:04:21,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2024-10-13 10:04:21,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 10:04:21,278 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:21,278 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 10:04:21,278 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-13 10:04:21,299 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 10:04:21,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 113 transitions, 253 flow [2024-10-13 10:04:21,330 INFO L124 PetriNetUnfolderBase]: 20/331 cut-off events. [2024-10-13 10:04:21,330 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-13 10:04:21,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 331 events. 20/331 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 928 event pairs, 1 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 205. Up to 16 conditions per place. [2024-10-13 10:04:21,331 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 113 transitions, 253 flow [2024-10-13 10:04:21,333 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 113 transitions, 253 flow [2024-10-13 10:04:21,334 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 10:04:21,334 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;@2ba36091, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 10:04:21,335 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-13 10:04:21,337 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 10:04:21,337 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2024-10-13 10:04:21,337 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 10:04:21,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:21,337 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:21,337 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-13 10:04:21,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:21,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1840619684, now seen corresponding path program 1 times [2024-10-13 10:04:21,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:21,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154284988] [2024-10-13 10:04:21,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:21,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:21,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:21,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154284988] [2024-10-13 10:04:21,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154284988] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:21,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:21,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 10:04:21,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517539603] [2024-10-13 10:04:21,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:21,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 10:04:21,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:21,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 10:04:21,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 10:04:21,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2024-10-13 10:04:21,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 113 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:21,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:21,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2024-10-13 10:04:21,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:21,669 INFO L124 PetriNetUnfolderBase]: 413/2179 cut-off events. [2024-10-13 10:04:21,670 INFO L125 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2024-10-13 10:04:21,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2953 conditions, 2179 events. 413/2179 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 17472 event pairs, 232 based on Foata normal form. 70/2062 useless extension candidates. Maximal degree in co-relation 1327. Up to 496 conditions per place. [2024-10-13 10:04:21,684 INFO L140 encePairwiseOnDemand]: 106/113 looper letters, 24 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2024-10-13 10:04:21,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 120 transitions, 323 flow [2024-10-13 10:04:21,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 10:04:21,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 10:04:21,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 400 transitions. [2024-10-13 10:04:21,686 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8849557522123894 [2024-10-13 10:04:21,687 INFO L175 Difference]: Start difference. First operand has 115 places, 113 transitions, 253 flow. Second operand 4 states and 400 transitions. [2024-10-13 10:04:21,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 120 transitions, 323 flow [2024-10-13 10:04:21,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 120 transitions, 323 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 10:04:21,689 INFO L231 Difference]: Finished difference. Result has 119 places, 112 transitions, 265 flow [2024-10-13 10:04:21,689 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=265, PETRI_PLACES=119, PETRI_TRANSITIONS=112} [2024-10-13 10:04:21,690 INFO L277 CegarLoopForPetriNet]: 115 programPoint places, 4 predicate places. [2024-10-13 10:04:21,690 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 112 transitions, 265 flow [2024-10-13 10:04:21,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:21,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:21,691 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:21,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 10:04:21,691 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-13 10:04:21,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:21,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1497087296, now seen corresponding path program 1 times [2024-10-13 10:04:21,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:21,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277007233] [2024-10-13 10:04:21,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:21,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:21,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:21,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:21,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277007233] [2024-10-13 10:04:21,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277007233] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:21,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:21,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 10:04:21,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630008713] [2024-10-13 10:04:21,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:21,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 10:04:21,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:21,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 10:04:21,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 10:04:22,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 113 [2024-10-13 10:04:22,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 112 transitions, 265 flow. Second operand has 6 states, 6 states have (on average 81.5) internal successors, (489), 6 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:22,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:22,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 113 [2024-10-13 10:04:22,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:22,525 INFO L124 PetriNetUnfolderBase]: 1292/3917 cut-off events. [2024-10-13 10:04:22,526 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-10-13 10:04:22,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6266 conditions, 3917 events. 1292/3917 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 34357 event pairs, 412 based on Foata normal form. 0/3662 useless extension candidates. Maximal degree in co-relation 2056. Up to 1483 conditions per place. [2024-10-13 10:04:22,555 INFO L140 encePairwiseOnDemand]: 107/113 looper letters, 50 selfloop transitions, 5 changer transitions 0/135 dead transitions. [2024-10-13 10:04:22,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 135 transitions, 421 flow [2024-10-13 10:04:22,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 10:04:22,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 10:04:22,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 535 transitions. [2024-10-13 10:04:22,557 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7890855457227138 [2024-10-13 10:04:22,557 INFO L175 Difference]: Start difference. First operand has 119 places, 112 transitions, 265 flow. Second operand 6 states and 535 transitions. [2024-10-13 10:04:22,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 135 transitions, 421 flow [2024-10-13 10:04:22,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 135 transitions, 415 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 10:04:22,562 INFO L231 Difference]: Finished difference. Result has 121 places, 111 transitions, 267 flow [2024-10-13 10:04:22,562 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=121, PETRI_TRANSITIONS=111} [2024-10-13 10:04:22,563 INFO L277 CegarLoopForPetriNet]: 115 programPoint places, 6 predicate places. [2024-10-13 10:04:22,563 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 111 transitions, 267 flow [2024-10-13 10:04:22,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.5) internal successors, (489), 6 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:22,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:22,564 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] [2024-10-13 10:04:22,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 10:04:22,564 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-13 10:04:22,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:22,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1823324052, now seen corresponding path program 1 times [2024-10-13 10:04:22,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:22,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712696346] [2024-10-13 10:04:22,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:22,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:22,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:22,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:22,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712696346] [2024-10-13 10:04:22,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712696346] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:22,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:22,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 10:04:22,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002511393] [2024-10-13 10:04:22,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:22,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:04:22,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:22,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:04:22,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:04:22,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 113 [2024-10-13 10:04:22,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 111 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:22,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:22,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 113 [2024-10-13 10:04:22,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:23,166 INFO L124 PetriNetUnfolderBase]: 1023/4159 cut-off events. [2024-10-13 10:04:23,167 INFO L125 PetriNetUnfolderBase]: For 676/938 co-relation queries the response was YES. [2024-10-13 10:04:23,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6131 conditions, 4159 events. 1023/4159 cut-off events. For 676/938 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 39795 event pairs, 581 based on Foata normal form. 7/3617 useless extension candidates. Maximal degree in co-relation 2112. Up to 1329 conditions per place. [2024-10-13 10:04:23,201 INFO L140 encePairwiseOnDemand]: 106/113 looper letters, 27 selfloop transitions, 6 changer transitions 0/124 dead transitions. [2024-10-13 10:04:23,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 124 transitions, 377 flow [2024-10-13 10:04:23,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:04:23,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:04:23,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2024-10-13 10:04:23,203 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9056047197640118 [2024-10-13 10:04:23,203 INFO L175 Difference]: Start difference. First operand has 121 places, 111 transitions, 267 flow. Second operand 3 states and 307 transitions. [2024-10-13 10:04:23,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 124 transitions, 377 flow [2024-10-13 10:04:23,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 124 transitions, 367 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 10:04:23,206 INFO L231 Difference]: Finished difference. Result has 120 places, 116 transitions, 303 flow [2024-10-13 10:04:23,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=303, PETRI_PLACES=120, PETRI_TRANSITIONS=116} [2024-10-13 10:04:23,207 INFO L277 CegarLoopForPetriNet]: 115 programPoint places, 5 predicate places. [2024-10-13 10:04:23,207 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 116 transitions, 303 flow [2024-10-13 10:04:23,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:23,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:23,208 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:23,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 10:04:23,208 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-13 10:04:23,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:23,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1406205556, now seen corresponding path program 1 times [2024-10-13 10:04:23,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:23,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215061681] [2024-10-13 10:04:23,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:23,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:23,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 10:04:23,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:23,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215061681] [2024-10-13 10:04:23,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215061681] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:23,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:23,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 10:04:23,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218880236] [2024-10-13 10:04:23,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:23,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 10:04:23,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:23,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 10:04:23,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 10:04:23,293 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2024-10-13 10:04:23,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 116 transitions, 303 flow. Second operand has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:23,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:23,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2024-10-13 10:04:23,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:23,738 INFO L124 PetriNetUnfolderBase]: 662/3141 cut-off events. [2024-10-13 10:04:23,738 INFO L125 PetriNetUnfolderBase]: For 430/450 co-relation queries the response was YES. [2024-10-13 10:04:23,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4682 conditions, 3141 events. 662/3141 cut-off events. For 430/450 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 28237 event pairs, 320 based on Foata normal form. 63/2852 useless extension candidates. Maximal degree in co-relation 3788. Up to 540 conditions per place. [2024-10-13 10:04:23,764 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 31 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2024-10-13 10:04:23,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 132 transitions, 414 flow [2024-10-13 10:04:23,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 10:04:23,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 10:04:23,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 404 transitions. [2024-10-13 10:04:23,767 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8938053097345132 [2024-10-13 10:04:23,767 INFO L175 Difference]: Start difference. First operand has 120 places, 116 transitions, 303 flow. Second operand 4 states and 404 transitions. [2024-10-13 10:04:23,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 132 transitions, 414 flow [2024-10-13 10:04:23,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 132 transitions, 402 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 10:04:23,771 INFO L231 Difference]: Finished difference. Result has 122 places, 117 transitions, 307 flow [2024-10-13 10:04:23,771 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=122, PETRI_TRANSITIONS=117} [2024-10-13 10:04:23,772 INFO L277 CegarLoopForPetriNet]: 115 programPoint places, 7 predicate places. [2024-10-13 10:04:23,773 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 117 transitions, 307 flow [2024-10-13 10:04:23,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:23,773 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:23,773 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:23,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-13 10:04:23,774 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-13 10:04:23,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:23,774 INFO L85 PathProgramCache]: Analyzing trace with hash -117961782, now seen corresponding path program 1 times [2024-10-13 10:04:23,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:23,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497788006] [2024-10-13 10:04:23,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:23,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:23,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:23,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:23,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497788006] [2024-10-13 10:04:23,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497788006] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:04:23,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559922871] [2024-10-13 10:04:23,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:23,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:04:23,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:04:23,870 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) [2024-10-13 10:04:23,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 10:04:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:23,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 10:04:23,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:04:24,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:24,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:04:24,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:24,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559922871] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:04:24,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:04:24,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-13 10:04:24,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773519836] [2024-10-13 10:04:24,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:04:24,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 10:04:24,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:24,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 10:04:24,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-10-13 10:04:24,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 113 [2024-10-13 10:04:24,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 117 transitions, 307 flow. Second operand has 13 states, 13 states have (on average 90.92307692307692) internal successors, (1182), 13 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:24,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:24,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 113 [2024-10-13 10:04:24,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:24,977 INFO L124 PetriNetUnfolderBase]: 1016/4568 cut-off events. [2024-10-13 10:04:24,978 INFO L125 PetriNetUnfolderBase]: For 586/586 co-relation queries the response was YES. [2024-10-13 10:04:24,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6839 conditions, 4568 events. 1016/4568 cut-off events. For 586/586 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 43742 event pairs, 156 based on Foata normal form. 15/4027 useless extension candidates. Maximal degree in co-relation 3793. Up to 749 conditions per place. [2024-10-13 10:04:25,006 INFO L140 encePairwiseOnDemand]: 105/113 looper letters, 50 selfloop transitions, 11 changer transitions 0/155 dead transitions. [2024-10-13 10:04:25,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 155 transitions, 507 flow [2024-10-13 10:04:25,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 10:04:25,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 10:04:25,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 953 transitions. [2024-10-13 10:04:25,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8433628318584071 [2024-10-13 10:04:25,010 INFO L175 Difference]: Start difference. First operand has 122 places, 117 transitions, 307 flow. Second operand 10 states and 953 transitions. [2024-10-13 10:04:25,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 155 transitions, 507 flow [2024-10-13 10:04:25,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 155 transitions, 501 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 10:04:25,017 INFO L231 Difference]: Finished difference. Result has 132 places, 123 transitions, 357 flow [2024-10-13 10:04:25,017 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=357, PETRI_PLACES=132, PETRI_TRANSITIONS=123} [2024-10-13 10:04:25,018 INFO L277 CegarLoopForPetriNet]: 115 programPoint places, 17 predicate places. [2024-10-13 10:04:25,018 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 123 transitions, 357 flow [2024-10-13 10:04:25,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 90.92307692307692) internal successors, (1182), 13 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:25,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:25,019 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:25,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 10:04:25,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 10:04:25,220 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-13 10:04:25,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:25,221 INFO L85 PathProgramCache]: Analyzing trace with hash -557545285, now seen corresponding path program 1 times [2024-10-13 10:04:25,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:25,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300508945] [2024-10-13 10:04:25,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:25,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:25,266 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 10:04:25,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:25,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300508945] [2024-10-13 10:04:25,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300508945] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:25,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:25,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 10:04:25,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273862077] [2024-10-13 10:04:25,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:25,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:04:25,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:25,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:04:25,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:04:25,288 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 113 [2024-10-13 10:04:25,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 123 transitions, 357 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:25,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:25,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 113 [2024-10-13 10:04:25,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:25,832 INFO L124 PetriNetUnfolderBase]: 916/3884 cut-off events. [2024-10-13 10:04:25,832 INFO L125 PetriNetUnfolderBase]: For 1212/1375 co-relation queries the response was YES. [2024-10-13 10:04:25,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6672 conditions, 3884 events. 916/3884 cut-off events. For 1212/1375 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 36926 event pairs, 539 based on Foata normal form. 4/3502 useless extension candidates. Maximal degree in co-relation 6001. Up to 1192 conditions per place. [2024-10-13 10:04:25,867 INFO L140 encePairwiseOnDemand]: 106/113 looper letters, 28 selfloop transitions, 9 changer transitions 0/137 dead transitions. [2024-10-13 10:04:25,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 137 transitions, 482 flow [2024-10-13 10:04:25,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:04:25,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:04:25,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2024-10-13 10:04:25,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9026548672566371 [2024-10-13 10:04:25,869 INFO L175 Difference]: Start difference. First operand has 132 places, 123 transitions, 357 flow. Second operand 3 states and 306 transitions. [2024-10-13 10:04:25,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 137 transitions, 482 flow [2024-10-13 10:04:25,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 137 transitions, 474 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 10:04:25,877 INFO L231 Difference]: Finished difference. Result has 134 places, 130 transitions, 425 flow [2024-10-13 10:04:25,878 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=425, PETRI_PLACES=134, PETRI_TRANSITIONS=130} [2024-10-13 10:04:25,878 INFO L277 CegarLoopForPetriNet]: 115 programPoint places, 19 predicate places. [2024-10-13 10:04:25,878 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 130 transitions, 425 flow [2024-10-13 10:04:25,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:25,879 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:25,879 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:25,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-13 10:04:25,879 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-13 10:04:25,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:25,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1054548099, now seen corresponding path program 1 times [2024-10-13 10:04:25,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:25,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744030495] [2024-10-13 10:04:25,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:25,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 10:04:25,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:25,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744030495] [2024-10-13 10:04:25,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744030495] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:25,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:25,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 10:04:25,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114872423] [2024-10-13 10:04:25,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:25,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:04:25,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:25,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:04:25,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:04:25,982 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 113 [2024-10-13 10:04:25,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 130 transitions, 425 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:25,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:25,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 113 [2024-10-13 10:04:25,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:26,157 INFO L124 PetriNetUnfolderBase]: 98/1329 cut-off events. [2024-10-13 10:04:26,157 INFO L125 PetriNetUnfolderBase]: For 334/378 co-relation queries the response was YES. [2024-10-13 10:04:26,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1999 conditions, 1329 events. 98/1329 cut-off events. For 334/378 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 9813 event pairs, 26 based on Foata normal form. 20/1238 useless extension candidates. Maximal degree in co-relation 896. Up to 101 conditions per place. [2024-10-13 10:04:26,163 INFO L140 encePairwiseOnDemand]: 107/113 looper letters, 12 selfloop transitions, 6 changer transitions 0/129 dead transitions. [2024-10-13 10:04:26,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 129 transitions, 446 flow [2024-10-13 10:04:26,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:04:26,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:04:26,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2024-10-13 10:04:26,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9292035398230089 [2024-10-13 10:04:26,165 INFO L175 Difference]: Start difference. First operand has 134 places, 130 transitions, 425 flow. Second operand 3 states and 315 transitions. [2024-10-13 10:04:26,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 129 transitions, 446 flow [2024-10-13 10:04:26,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 129 transitions, 434 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 10:04:26,169 INFO L231 Difference]: Finished difference. Result has 134 places, 124 transitions, 379 flow [2024-10-13 10:04:26,170 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=379, PETRI_PLACES=134, PETRI_TRANSITIONS=124} [2024-10-13 10:04:26,170 INFO L277 CegarLoopForPetriNet]: 115 programPoint places, 19 predicate places. [2024-10-13 10:04:26,170 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 124 transitions, 379 flow [2024-10-13 10:04:26,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:26,171 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:26,171 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:26,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-13 10:04:26,171 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-13 10:04:26,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:26,172 INFO L85 PathProgramCache]: Analyzing trace with hash -2110657165, now seen corresponding path program 1 times [2024-10-13 10:04:26,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:26,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348515050] [2024-10-13 10:04:26,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:26,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:26,215 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-13 10:04:26,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:26,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348515050] [2024-10-13 10:04:26,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348515050] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:26,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:26,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 10:04:26,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534676927] [2024-10-13 10:04:26,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:26,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:04:26,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:26,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:04:26,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:04:26,233 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 113 [2024-10-13 10:04:26,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 124 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:26,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:26,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 113 [2024-10-13 10:04:26,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:26,390 INFO L124 PetriNetUnfolderBase]: 177/1401 cut-off events. [2024-10-13 10:04:26,390 INFO L125 PetriNetUnfolderBase]: For 698/746 co-relation queries the response was YES. [2024-10-13 10:04:26,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2462 conditions, 1401 events. 177/1401 cut-off events. For 698/746 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 10818 event pairs, 135 based on Foata normal form. 3/1290 useless extension candidates. Maximal degree in co-relation 2143. Up to 336 conditions per place. [2024-10-13 10:04:26,401 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 23 selfloop transitions, 4 changer transitions 0/129 dead transitions. [2024-10-13 10:04:26,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 129 transitions, 453 flow [2024-10-13 10:04:26,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:04:26,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:04:26,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2024-10-13 10:04:26,403 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8820058997050148 [2024-10-13 10:04:26,403 INFO L175 Difference]: Start difference. First operand has 134 places, 124 transitions, 379 flow. Second operand 3 states and 299 transitions. [2024-10-13 10:04:26,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 129 transitions, 453 flow [2024-10-13 10:04:26,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 129 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 10:04:26,408 INFO L231 Difference]: Finished difference. Result has 137 places, 127 transitions, 407 flow [2024-10-13 10:04:26,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=407, PETRI_PLACES=137, PETRI_TRANSITIONS=127} [2024-10-13 10:04:26,409 INFO L277 CegarLoopForPetriNet]: 115 programPoint places, 22 predicate places. [2024-10-13 10:04:26,409 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 127 transitions, 407 flow [2024-10-13 10:04:26,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:26,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:26,409 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:26,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-13 10:04:26,410 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-13 10:04:26,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:26,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1663829781, now seen corresponding path program 1 times [2024-10-13 10:04:26,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:26,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381504540] [2024-10-13 10:04:26,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:26,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:26,588 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:26,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:26,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381504540] [2024-10-13 10:04:26,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381504540] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:04:26,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661210381] [2024-10-13 10:04:26,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:26,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:04:26,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:04:26,591 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) [2024-10-13 10:04:26,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 10:04:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:26,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 10:04:26,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:04:26,937 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:26,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:04:27,063 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:27,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661210381] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:04:27,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:04:27,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-10-13 10:04:27,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256350149] [2024-10-13 10:04:27,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:04:27,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 10:04:27,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:27,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 10:04:27,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-10-13 10:04:27,292 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 113 [2024-10-13 10:04:27,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 127 transitions, 407 flow. Second operand has 19 states, 19 states have (on average 91.21052631578948) internal successors, (1733), 19 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:27,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:27,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 113 [2024-10-13 10:04:27,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:27,533 INFO L124 PetriNetUnfolderBase]: 151/828 cut-off events. [2024-10-13 10:04:27,533 INFO L125 PetriNetUnfolderBase]: For 338/338 co-relation queries the response was YES. [2024-10-13 10:04:27,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1520 conditions, 828 events. 151/828 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4892 event pairs, 6 based on Foata normal form. 20/829 useless extension candidates. Maximal degree in co-relation 1505. Up to 88 conditions per place. [2024-10-13 10:04:27,538 INFO L140 encePairwiseOnDemand]: 107/113 looper letters, 50 selfloop transitions, 11 changer transitions 0/125 dead transitions. [2024-10-13 10:04:27,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 125 transitions, 502 flow [2024-10-13 10:04:27,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 10:04:27,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 10:04:27,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1219 transitions. [2024-10-13 10:04:27,541 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8298162014976175 [2024-10-13 10:04:27,541 INFO L175 Difference]: Start difference. First operand has 137 places, 127 transitions, 407 flow. Second operand 13 states and 1219 transitions. [2024-10-13 10:04:27,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 125 transitions, 502 flow [2024-10-13 10:04:27,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 125 transitions, 463 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-10-13 10:04:27,545 INFO L231 Difference]: Finished difference. Result has 110 places, 87 transitions, 247 flow [2024-10-13 10:04:27,545 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=247, PETRI_PLACES=110, PETRI_TRANSITIONS=87} [2024-10-13 10:04:27,546 INFO L277 CegarLoopForPetriNet]: 115 programPoint places, -5 predicate places. [2024-10-13 10:04:27,546 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 87 transitions, 247 flow [2024-10-13 10:04:27,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.21052631578948) internal successors, (1733), 19 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:27,548 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:27,548 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:27,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 10:04:27,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:04:27,750 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-13 10:04:27,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:27,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1191937286, now seen corresponding path program 1 times [2024-10-13 10:04:27,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:27,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431543774] [2024-10-13 10:04:27,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:27,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 10:04:27,783 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 10:04:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 10:04:27,817 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 10:04:27,817 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 10:04:27,817 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-10-13 10:04:27,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2024-10-13 10:04:27,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2024-10-13 10:04:27,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2024-10-13 10:04:27,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2024-10-13 10:04:27,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2024-10-13 10:04:27,819 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2024-10-13 10:04:27,819 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2024-10-13 10:04:27,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-13 10:04:27,819 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:27,820 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 10:04:27,820 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-13 10:04:27,841 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-13 10:04:27,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 131 transitions, 302 flow [2024-10-13 10:04:27,900 INFO L124 PetriNetUnfolderBase]: 42/565 cut-off events. [2024-10-13 10:04:27,900 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-10-13 10:04:27,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 565 events. 42/565 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2066 event pairs, 6 based on Foata normal form. 0/482 useless extension candidates. Maximal degree in co-relation 351. Up to 32 conditions per place. [2024-10-13 10:04:27,903 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 131 transitions, 302 flow [2024-10-13 10:04:27,905 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 131 transitions, 302 flow [2024-10-13 10:04:27,906 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 10:04:27,906 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;@2ba36091, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 10:04:27,906 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-13 10:04:27,908 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 10:04:27,908 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2024-10-13 10:04:27,908 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 10:04:27,908 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:27,908 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:27,908 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 10:04:27,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:27,908 INFO L85 PathProgramCache]: Analyzing trace with hash -2029671228, now seen corresponding path program 1 times [2024-10-13 10:04:27,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:27,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465430488] [2024-10-13 10:04:27,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:27,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:27,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:27,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:27,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465430488] [2024-10-13 10:04:27,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465430488] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:27,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:27,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 10:04:27,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989426776] [2024-10-13 10:04:27,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:27,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 10:04:27,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:27,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 10:04:27,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 10:04:27,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 131 [2024-10-13 10:04:27,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 131 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:27,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:27,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 131 [2024-10-13 10:04:27,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:28,942 INFO L124 PetriNetUnfolderBase]: 2017/8193 cut-off events. [2024-10-13 10:04:28,943 INFO L125 PetriNetUnfolderBase]: For 1213/1213 co-relation queries the response was YES. [2024-10-13 10:04:28,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11594 conditions, 8193 events. 2017/8193 cut-off events. For 1213/1213 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 83706 event pairs, 1191 based on Foata normal form. 286/7767 useless extension candidates. Maximal degree in co-relation 5267. Up to 2119 conditions per place. [2024-10-13 10:04:29,013 INFO L140 encePairwiseOnDemand]: 124/131 looper letters, 30 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2024-10-13 10:04:29,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 140 transitions, 388 flow [2024-10-13 10:04:29,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 10:04:29,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 10:04:29,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 462 transitions. [2024-10-13 10:04:29,016 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8816793893129771 [2024-10-13 10:04:29,016 INFO L175 Difference]: Start difference. First operand has 134 places, 131 transitions, 302 flow. Second operand 4 states and 462 transitions. [2024-10-13 10:04:29,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 140 transitions, 388 flow [2024-10-13 10:04:29,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 140 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 10:04:29,020 INFO L231 Difference]: Finished difference. Result has 138 places, 130 transitions, 314 flow [2024-10-13 10:04:29,020 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=314, PETRI_PLACES=138, PETRI_TRANSITIONS=130} [2024-10-13 10:04:29,021 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 4 predicate places. [2024-10-13 10:04:29,021 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 130 transitions, 314 flow [2024-10-13 10:04:29,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:29,022 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:29,022 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:29,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-13 10:04:29,022 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 10:04:29,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:29,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1358511811, now seen corresponding path program 1 times [2024-10-13 10:04:29,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:29,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98236951] [2024-10-13 10:04:29,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:29,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:29,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:29,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:29,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98236951] [2024-10-13 10:04:29,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98236951] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:29,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:29,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 10:04:29,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513581597] [2024-10-13 10:04:29,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:29,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 10:04:29,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:29,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 10:04:29,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 10:04:29,265 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 131 [2024-10-13 10:04:29,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 130 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 95.5) internal successors, (573), 6 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:29,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:29,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 131 [2024-10-13 10:04:29,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:31,279 INFO L124 PetriNetUnfolderBase]: 6248/15570 cut-off events. [2024-10-13 10:04:31,279 INFO L125 PetriNetUnfolderBase]: For 1593/1593 co-relation queries the response was YES. [2024-10-13 10:04:31,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25646 conditions, 15570 events. 6248/15570 cut-off events. For 1593/1593 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 158157 event pairs, 808 based on Foata normal form. 0/14524 useless extension candidates. Maximal degree in co-relation 23371. Up to 6781 conditions per place. [2024-10-13 10:04:31,402 INFO L140 encePairwiseOnDemand]: 125/131 looper letters, 62 selfloop transitions, 5 changer transitions 0/161 dead transitions. [2024-10-13 10:04:31,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 161 transitions, 510 flow [2024-10-13 10:04:31,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 10:04:31,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 10:04:31,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 631 transitions. [2024-10-13 10:04:31,405 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8027989821882952 [2024-10-13 10:04:31,405 INFO L175 Difference]: Start difference. First operand has 138 places, 130 transitions, 314 flow. Second operand 6 states and 631 transitions. [2024-10-13 10:04:31,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 161 transitions, 510 flow [2024-10-13 10:04:31,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 161 transitions, 504 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 10:04:31,436 INFO L231 Difference]: Finished difference. Result has 140 places, 129 transitions, 316 flow [2024-10-13 10:04:31,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=316, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2024-10-13 10:04:31,437 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 6 predicate places. [2024-10-13 10:04:31,437 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 316 flow [2024-10-13 10:04:31,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.5) internal successors, (573), 6 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:31,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:31,438 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] [2024-10-13 10:04:31,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-13 10:04:31,438 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 10:04:31,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:31,438 INFO L85 PathProgramCache]: Analyzing trace with hash -573880425, now seen corresponding path program 1 times [2024-10-13 10:04:31,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:31,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697986764] [2024-10-13 10:04:31,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:31,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:31,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:31,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:31,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697986764] [2024-10-13 10:04:31,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697986764] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:31,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:31,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 10:04:31,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578170219] [2024-10-13 10:04:31,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:31,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:04:31,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:31,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:04:31,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:04:31,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2024-10-13 10:04:31,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:31,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:31,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2024-10-13 10:04:31,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:34,081 INFO L124 PetriNetUnfolderBase]: 7160/22223 cut-off events. [2024-10-13 10:04:34,082 INFO L125 PetriNetUnfolderBase]: For 4772/5286 co-relation queries the response was YES. [2024-10-13 10:04:34,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34212 conditions, 22223 events. 7160/22223 cut-off events. For 4772/5286 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 266140 event pairs, 5035 based on Foata normal form. 10/19775 useless extension candidates. Maximal degree in co-relation 27383. Up to 8447 conditions per place. [2024-10-13 10:04:34,231 INFO L140 encePairwiseOnDemand]: 123/131 looper letters, 36 selfloop transitions, 7 changer transitions 0/147 dead transitions. [2024-10-13 10:04:34,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 147 transitions, 468 flow [2024-10-13 10:04:34,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:04:34,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:04:34,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2024-10-13 10:04:34,233 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.905852417302799 [2024-10-13 10:04:34,233 INFO L175 Difference]: Start difference. First operand has 140 places, 129 transitions, 316 flow. Second operand 3 states and 356 transitions. [2024-10-13 10:04:34,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 147 transitions, 468 flow [2024-10-13 10:04:34,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 147 transitions, 458 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 10:04:34,242 INFO L231 Difference]: Finished difference. Result has 139 places, 135 transitions, 360 flow [2024-10-13 10:04:34,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=360, PETRI_PLACES=139, PETRI_TRANSITIONS=135} [2024-10-13 10:04:34,243 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 5 predicate places. [2024-10-13 10:04:34,244 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 135 transitions, 360 flow [2024-10-13 10:04:34,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:34,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:34,244 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:34,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-13 10:04:34,244 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 10:04:34,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:34,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1468387551, now seen corresponding path program 1 times [2024-10-13 10:04:34,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:34,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563354293] [2024-10-13 10:04:34,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:34,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:34,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 10:04:34,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:34,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563354293] [2024-10-13 10:04:34,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563354293] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:34,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:34,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 10:04:34,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711317624] [2024-10-13 10:04:34,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:34,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 10:04:34,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:34,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 10:04:34,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 10:04:34,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 131 [2024-10-13 10:04:34,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 135 transitions, 360 flow. Second operand has 4 states, 4 states have (on average 107.5) internal successors, (430), 4 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:34,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:34,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 131 [2024-10-13 10:04:34,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:36,344 INFO L124 PetriNetUnfolderBase]: 4968/18140 cut-off events. [2024-10-13 10:04:36,345 INFO L125 PetriNetUnfolderBase]: For 2733/2797 co-relation queries the response was YES. [2024-10-13 10:04:36,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28074 conditions, 18140 events. 4968/18140 cut-off events. For 2733/2797 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 220363 event pairs, 2078 based on Foata normal form. 259/16274 useless extension candidates. Maximal degree in co-relation 22754. Up to 3640 conditions per place. [2024-10-13 10:04:36,470 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 40 selfloop transitions, 4 changer transitions 0/156 dead transitions. [2024-10-13 10:04:36,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 156 transitions, 502 flow [2024-10-13 10:04:36,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 10:04:36,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 10:04:36,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 469 transitions. [2024-10-13 10:04:36,472 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8950381679389313 [2024-10-13 10:04:36,472 INFO L175 Difference]: Start difference. First operand has 139 places, 135 transitions, 360 flow. Second operand 4 states and 469 transitions. [2024-10-13 10:04:36,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 156 transitions, 502 flow [2024-10-13 10:04:36,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 156 transitions, 488 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 10:04:36,488 INFO L231 Difference]: Finished difference. Result has 141 places, 136 transitions, 362 flow [2024-10-13 10:04:36,488 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=362, PETRI_PLACES=141, PETRI_TRANSITIONS=136} [2024-10-13 10:04:36,489 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 7 predicate places. [2024-10-13 10:04:36,489 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 136 transitions, 362 flow [2024-10-13 10:04:36,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.5) internal successors, (430), 4 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:36,490 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:36,490 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:36,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-13 10:04:36,490 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 10:04:36,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:36,490 INFO L85 PathProgramCache]: Analyzing trace with hash -467496006, now seen corresponding path program 1 times [2024-10-13 10:04:36,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:36,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857265064] [2024-10-13 10:04:36,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:36,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:36,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:36,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:36,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857265064] [2024-10-13 10:04:36,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857265064] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:04:36,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592013937] [2024-10-13 10:04:36,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:36,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:04:36,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:04:36,568 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) [2024-10-13 10:04:36,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 10:04:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:36,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 10:04:36,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:04:36,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:36,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:04:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:36,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592013937] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:04:36,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:04:36,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-13 10:04:36,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64846243] [2024-10-13 10:04:36,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:04:36,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 10:04:36,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:36,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 10:04:36,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-10-13 10:04:36,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 131 [2024-10-13 10:04:36,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 136 transitions, 362 flow. Second operand has 13 states, 13 states have (on average 104.92307692307692) internal successors, (1364), 13 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:36,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:36,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 131 [2024-10-13 10:04:36,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:39,830 INFO L124 PetriNetUnfolderBase]: 6978/24686 cut-off events. [2024-10-13 10:04:39,831 INFO L125 PetriNetUnfolderBase]: For 3252/3252 co-relation queries the response was YES. [2024-10-13 10:04:39,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38232 conditions, 24686 events. 6978/24686 cut-off events. For 3252/3252 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 308206 event pairs, 1505 based on Foata normal form. 15/21224 useless extension candidates. Maximal degree in co-relation 18423. Up to 4886 conditions per place. [2024-10-13 10:04:39,987 INFO L140 encePairwiseOnDemand]: 123/131 looper letters, 58 selfloop transitions, 11 changer transitions 0/178 dead transitions. [2024-10-13 10:04:39,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 178 transitions, 586 flow [2024-10-13 10:04:39,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 10:04:39,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 10:04:39,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1101 transitions. [2024-10-13 10:04:39,990 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8404580152671756 [2024-10-13 10:04:39,991 INFO L175 Difference]: Start difference. First operand has 141 places, 136 transitions, 362 flow. Second operand 10 states and 1101 transitions. [2024-10-13 10:04:39,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 178 transitions, 586 flow [2024-10-13 10:04:40,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 178 transitions, 580 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 10:04:40,022 INFO L231 Difference]: Finished difference. Result has 151 places, 142 transitions, 412 flow [2024-10-13 10:04:40,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=412, PETRI_PLACES=151, PETRI_TRANSITIONS=142} [2024-10-13 10:04:40,023 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 17 predicate places. [2024-10-13 10:04:40,023 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 142 transitions, 412 flow [2024-10-13 10:04:40,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 104.92307692307692) internal successors, (1364), 13 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:40,024 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:40,024 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:40,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 10:04:40,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-13 10:04:40,225 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 10:04:40,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:40,225 INFO L85 PathProgramCache]: Analyzing trace with hash 21450891, now seen corresponding path program 1 times [2024-10-13 10:04:40,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:40,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288450769] [2024-10-13 10:04:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:40,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:40,307 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 10:04:40,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:40,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288450769] [2024-10-13 10:04:40,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288450769] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:40,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:40,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 10:04:40,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136785837] [2024-10-13 10:04:40,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:40,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:04:40,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:40,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:04:40,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:04:40,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2024-10-13 10:04:40,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 142 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:40,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:40,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2024-10-13 10:04:40,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:44,028 INFO L124 PetriNetUnfolderBase]: 8594/30099 cut-off events. [2024-10-13 10:04:44,028 INFO L125 PetriNetUnfolderBase]: For 11078/13067 co-relation queries the response was YES. [2024-10-13 10:04:44,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51770 conditions, 30099 events. 8594/30099 cut-off events. For 11078/13067 co-relation queries the response was YES. Maximal size of possible extension queue 1084. Compared 393624 event pairs, 4943 based on Foata normal form. 35/26769 useless extension candidates. Maximal degree in co-relation 16490. Up to 9810 conditions per place. [2024-10-13 10:04:44,250 INFO L140 encePairwiseOnDemand]: 123/131 looper letters, 38 selfloop transitions, 11 changer transitions 0/162 dead transitions. [2024-10-13 10:04:44,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 162 transitions, 589 flow [2024-10-13 10:04:44,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:04:44,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:04:44,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2024-10-13 10:04:44,251 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9033078880407125 [2024-10-13 10:04:44,252 INFO L175 Difference]: Start difference. First operand has 151 places, 142 transitions, 412 flow. Second operand 3 states and 355 transitions. [2024-10-13 10:04:44,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 162 transitions, 589 flow [2024-10-13 10:04:44,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 162 transitions, 581 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 10:04:44,269 INFO L231 Difference]: Finished difference. Result has 153 places, 151 transitions, 500 flow [2024-10-13 10:04:44,270 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=500, PETRI_PLACES=153, PETRI_TRANSITIONS=151} [2024-10-13 10:04:44,270 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 19 predicate places. [2024-10-13 10:04:44,270 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 151 transitions, 500 flow [2024-10-13 10:04:44,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:44,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:44,271 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:44,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-13 10:04:44,271 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 10:04:44,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:44,272 INFO L85 PathProgramCache]: Analyzing trace with hash 856418559, now seen corresponding path program 1 times [2024-10-13 10:04:44,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:44,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516558344] [2024-10-13 10:04:44,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:44,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:44,340 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 10:04:44,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:44,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516558344] [2024-10-13 10:04:44,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516558344] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:44,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:44,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 10:04:44,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15813777] [2024-10-13 10:04:44,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:44,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:04:44,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:44,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:04:44,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:04:44,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 131 [2024-10-13 10:04:44,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 151 transitions, 500 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:44,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:44,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 131 [2024-10-13 10:04:44,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:45,170 INFO L124 PetriNetUnfolderBase]: 530/4989 cut-off events. [2024-10-13 10:04:45,170 INFO L125 PetriNetUnfolderBase]: For 1503/1677 co-relation queries the response was YES. [2024-10-13 10:04:45,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7637 conditions, 4989 events. 530/4989 cut-off events. For 1503/1677 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 54175 event pairs, 194 based on Foata normal form. 140/4670 useless extension candidates. Maximal degree in co-relation 2862. Up to 422 conditions per place. [2024-10-13 10:04:45,196 INFO L140 encePairwiseOnDemand]: 123/131 looper letters, 16 selfloop transitions, 8 changer transitions 0/149 dead transitions. [2024-10-13 10:04:45,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 149 transitions, 527 flow [2024-10-13 10:04:45,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:04:45,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:04:45,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 364 transitions. [2024-10-13 10:04:45,198 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.926208651399491 [2024-10-13 10:04:45,198 INFO L175 Difference]: Start difference. First operand has 153 places, 151 transitions, 500 flow. Second operand 3 states and 364 transitions. [2024-10-13 10:04:45,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 149 transitions, 527 flow [2024-10-13 10:04:45,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 149 transitions, 515 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 10:04:45,205 INFO L231 Difference]: Finished difference. Result has 153 places, 142 transitions, 436 flow [2024-10-13 10:04:45,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=436, PETRI_PLACES=153, PETRI_TRANSITIONS=142} [2024-10-13 10:04:45,206 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 19 predicate places. [2024-10-13 10:04:45,206 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 142 transitions, 436 flow [2024-10-13 10:04:45,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:45,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:45,207 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:45,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-13 10:04:45,207 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 10:04:45,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:45,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1238358746, now seen corresponding path program 1 times [2024-10-13 10:04:45,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:45,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872814576] [2024-10-13 10:04:45,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:45,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:45,250 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-13 10:04:45,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:45,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872814576] [2024-10-13 10:04:45,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872814576] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:45,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:45,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 10:04:45,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577632644] [2024-10-13 10:04:45,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:45,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:04:45,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:45,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:04:45,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:04:45,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2024-10-13 10:04:45,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 142 transitions, 436 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:45,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:45,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2024-10-13 10:04:45,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:46,186 INFO L124 PetriNetUnfolderBase]: 934/5912 cut-off events. [2024-10-13 10:04:46,186 INFO L125 PetriNetUnfolderBase]: For 3617/3719 co-relation queries the response was YES. [2024-10-13 10:04:46,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10624 conditions, 5912 events. 934/5912 cut-off events. For 3617/3719 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 66553 event pairs, 666 based on Foata normal form. 4/5388 useless extension candidates. Maximal degree in co-relation 3847. Up to 1548 conditions per place. [2024-10-13 10:04:46,224 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 30 selfloop transitions, 4 changer transitions 0/149 dead transitions. [2024-10-13 10:04:46,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 149 transitions, 540 flow [2024-10-13 10:04:46,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:04:46,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:04:46,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2024-10-13 10:04:46,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8778625954198473 [2024-10-13 10:04:46,226 INFO L175 Difference]: Start difference. First operand has 153 places, 142 transitions, 436 flow. Second operand 3 states and 345 transitions. [2024-10-13 10:04:46,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 149 transitions, 540 flow [2024-10-13 10:04:46,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 149 transitions, 532 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 10:04:46,235 INFO L231 Difference]: Finished difference. Result has 156 places, 145 transitions, 462 flow [2024-10-13 10:04:46,236 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=462, PETRI_PLACES=156, PETRI_TRANSITIONS=145} [2024-10-13 10:04:46,236 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 22 predicate places. [2024-10-13 10:04:46,236 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 145 transitions, 462 flow [2024-10-13 10:04:46,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:46,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:46,237 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:46,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-10-13 10:04:46,237 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 10:04:46,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:46,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1963262661, now seen corresponding path program 1 times [2024-10-13 10:04:46,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:46,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087171827] [2024-10-13 10:04:46,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:46,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:46,523 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:46,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:46,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087171827] [2024-10-13 10:04:46,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087171827] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:04:46,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243062007] [2024-10-13 10:04:46,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:46,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:04:46,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:04:46,526 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) [2024-10-13 10:04:46,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 10:04:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:46,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 10:04:46,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:04:46,923 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:46,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:04:47,050 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:47,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243062007] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:04:47,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:04:47,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-10-13 10:04:47,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271515564] [2024-10-13 10:04:47,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:04:47,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 10:04:47,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:47,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 10:04:47,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-10-13 10:04:47,207 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 131 [2024-10-13 10:04:47,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 145 transitions, 462 flow. Second operand has 19 states, 19 states have (on average 105.21052631578948) internal successors, (1999), 19 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:47,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:47,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 131 [2024-10-13 10:04:47,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:48,248 INFO L124 PetriNetUnfolderBase]: 1216/8145 cut-off events. [2024-10-13 10:04:48,248 INFO L125 PetriNetUnfolderBase]: For 3428/3694 co-relation queries the response was YES. [2024-10-13 10:04:48,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13774 conditions, 8145 events. 1216/8145 cut-off events. For 3428/3694 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 88349 event pairs, 191 based on Foata normal form. 20/7428 useless extension candidates. Maximal degree in co-relation 5543. Up to 893 conditions per place. [2024-10-13 10:04:48,285 INFO L140 encePairwiseOnDemand]: 123/131 looper letters, 84 selfloop transitions, 14 changer transitions 1/211 dead transitions. [2024-10-13 10:04:48,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 211 transitions, 868 flow [2024-10-13 10:04:48,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 10:04:48,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 10:04:48,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1542 transitions. [2024-10-13 10:04:48,287 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8407851690294439 [2024-10-13 10:04:48,287 INFO L175 Difference]: Start difference. First operand has 156 places, 145 transitions, 462 flow. Second operand 14 states and 1542 transitions. [2024-10-13 10:04:48,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 211 transitions, 868 flow [2024-10-13 10:04:48,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 211 transitions, 856 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 10:04:48,295 INFO L231 Difference]: Finished difference. Result has 171 places, 149 transitions, 517 flow [2024-10-13 10:04:48,295 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=517, PETRI_PLACES=171, PETRI_TRANSITIONS=149} [2024-10-13 10:04:48,296 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 37 predicate places. [2024-10-13 10:04:48,296 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 149 transitions, 517 flow [2024-10-13 10:04:48,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 105.21052631578948) internal successors, (1999), 19 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:48,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:48,297 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:48,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 10:04:48,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:04:48,498 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 10:04:48,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:48,498 INFO L85 PathProgramCache]: Analyzing trace with hash -466262246, now seen corresponding path program 1 times [2024-10-13 10:04:48,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:48,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982993175] [2024-10-13 10:04:48,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:48,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:48,541 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-13 10:04:48,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:48,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982993175] [2024-10-13 10:04:48,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982993175] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:48,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:48,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 10:04:48,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119019720] [2024-10-13 10:04:48,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:48,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:04:48,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:48,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:04:48,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:04:48,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2024-10-13 10:04:48,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 149 transitions, 517 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:48,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:48,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2024-10-13 10:04:48,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:49,112 INFO L124 PetriNetUnfolderBase]: 883/5630 cut-off events. [2024-10-13 10:04:49,112 INFO L125 PetriNetUnfolderBase]: For 4246/4342 co-relation queries the response was YES. [2024-10-13 10:04:49,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10695 conditions, 5630 events. 883/5630 cut-off events. For 4246/4342 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 61385 event pairs, 677 based on Foata normal form. 4/5132 useless extension candidates. Maximal degree in co-relation 9881. Up to 1476 conditions per place. [2024-10-13 10:04:49,145 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 30 selfloop transitions, 4 changer transitions 0/155 dead transitions. [2024-10-13 10:04:49,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 155 transitions, 612 flow [2024-10-13 10:04:49,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:04:49,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:04:49,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2024-10-13 10:04:49,146 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8753180661577609 [2024-10-13 10:04:49,146 INFO L175 Difference]: Start difference. First operand has 171 places, 149 transitions, 517 flow. Second operand 3 states and 344 transitions. [2024-10-13 10:04:49,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 155 transitions, 612 flow [2024-10-13 10:04:49,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 155 transitions, 594 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-10-13 10:04:49,175 INFO L231 Difference]: Finished difference. Result has 168 places, 152 transitions, 535 flow [2024-10-13 10:04:49,175 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=535, PETRI_PLACES=168, PETRI_TRANSITIONS=152} [2024-10-13 10:04:49,176 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 34 predicate places. [2024-10-13 10:04:49,176 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 152 transitions, 535 flow [2024-10-13 10:04:49,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:49,176 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:49,176 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:49,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-10-13 10:04:49,176 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 10:04:49,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:49,177 INFO L85 PathProgramCache]: Analyzing trace with hash 78765815, now seen corresponding path program 1 times [2024-10-13 10:04:49,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:49,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340865002] [2024-10-13 10:04:49,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:49,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:49,517 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-13 10:04:49,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:49,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340865002] [2024-10-13 10:04:49,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340865002] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:49,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:49,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 10:04:49,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594931166] [2024-10-13 10:04:49,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:49,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 10:04:49,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:49,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 10:04:49,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 10:04:49,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 131 [2024-10-13 10:04:49,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 152 transitions, 535 flow. Second operand has 6 states, 6 states have (on average 98.66666666666667) internal successors, (592), 6 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:49,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:49,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 131 [2024-10-13 10:04:49,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:50,879 INFO L124 PetriNetUnfolderBase]: 2726/11128 cut-off events. [2024-10-13 10:04:50,880 INFO L125 PetriNetUnfolderBase]: For 5193/5497 co-relation queries the response was YES. [2024-10-13 10:04:50,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21760 conditions, 11128 events. 2726/11128 cut-off events. For 5193/5497 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 122011 event pairs, 1342 based on Foata normal form. 0/10424 useless extension candidates. Maximal degree in co-relation 19469. Up to 2509 conditions per place. [2024-10-13 10:04:50,933 INFO L140 encePairwiseOnDemand]: 125/131 looper letters, 59 selfloop transitions, 6 changer transitions 0/183 dead transitions. [2024-10-13 10:04:50,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 183 transitions, 759 flow [2024-10-13 10:04:50,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 10:04:50,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 10:04:50,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 641 transitions. [2024-10-13 10:04:50,934 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8155216284987278 [2024-10-13 10:04:50,934 INFO L175 Difference]: Start difference. First operand has 168 places, 152 transitions, 535 flow. Second operand 6 states and 641 transitions. [2024-10-13 10:04:50,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 183 transitions, 759 flow [2024-10-13 10:04:50,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 183 transitions, 745 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-13 10:04:50,987 INFO L231 Difference]: Finished difference. Result has 170 places, 151 transitions, 531 flow [2024-10-13 10:04:50,987 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=531, PETRI_PLACES=170, PETRI_TRANSITIONS=151} [2024-10-13 10:04:50,988 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 36 predicate places. [2024-10-13 10:04:50,988 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 151 transitions, 531 flow [2024-10-13 10:04:50,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.66666666666667) internal successors, (592), 6 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:50,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:50,989 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:50,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-10-13 10:04:50,989 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 10:04:50,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:50,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1288918785, now seen corresponding path program 1 times [2024-10-13 10:04:50,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:50,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011077986] [2024-10-13 10:04:50,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:50,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:51,192 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 97 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:51,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:51,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011077986] [2024-10-13 10:04:51,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011077986] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:04:51,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538264983] [2024-10-13 10:04:51,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:51,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:04:51,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:04:51,196 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) [2024-10-13 10:04:51,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 10:04:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:51,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-13 10:04:51,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:04:51,700 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:51,700 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 10:04:51,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538264983] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:51,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 10:04:51,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 21 [2024-10-13 10:04:51,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414420296] [2024-10-13 10:04:51,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:51,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 10:04:51,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:51,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 10:04:51,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2024-10-13 10:04:51,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2024-10-13 10:04:51,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 151 transitions, 531 flow. Second operand has 12 states, 12 states have (on average 106.0) internal successors, (1272), 12 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:51,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:51,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2024-10-13 10:04:51,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:52,882 INFO L124 PetriNetUnfolderBase]: 1126/7473 cut-off events. [2024-10-13 10:04:52,883 INFO L125 PetriNetUnfolderBase]: For 4630/4866 co-relation queries the response was YES. [2024-10-13 10:04:52,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14417 conditions, 7473 events. 1126/7473 cut-off events. For 4630/4866 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 80455 event pairs, 159 based on Foata normal form. 48/6973 useless extension candidates. Maximal degree in co-relation 4931. Up to 557 conditions per place. [2024-10-13 10:04:52,926 INFO L140 encePairwiseOnDemand]: 123/131 looper letters, 89 selfloop transitions, 16 changer transitions 8/227 dead transitions. [2024-10-13 10:04:52,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 227 transitions, 978 flow [2024-10-13 10:04:52,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 10:04:52,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-13 10:04:52,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1778 transitions. [2024-10-13 10:04:52,930 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8482824427480916 [2024-10-13 10:04:52,930 INFO L175 Difference]: Start difference. First operand has 170 places, 151 transitions, 531 flow. Second operand 16 states and 1778 transitions. [2024-10-13 10:04:52,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 227 transitions, 978 flow [2024-10-13 10:04:52,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 227 transitions, 958 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-13 10:04:52,948 INFO L231 Difference]: Finished difference. Result has 175 places, 149 transitions, 528 flow [2024-10-13 10:04:52,948 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=528, PETRI_PLACES=175, PETRI_TRANSITIONS=149} [2024-10-13 10:04:52,948 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 41 predicate places. [2024-10-13 10:04:52,948 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 149 transitions, 528 flow [2024-10-13 10:04:52,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 106.0) internal successors, (1272), 12 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:52,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:52,949 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:52,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-13 10:04:53,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:04:53,150 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 10:04:53,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:53,150 INFO L85 PathProgramCache]: Analyzing trace with hash 66093328, now seen corresponding path program 1 times [2024-10-13 10:04:53,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:53,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262441696] [2024-10-13 10:04:53,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:53,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:53,285 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-10-13 10:04:53,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:53,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262441696] [2024-10-13 10:04:53,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262441696] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:04:53,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:04:53,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 10:04:53,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662922611] [2024-10-13 10:04:53,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:04:53,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:04:53,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:53,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:04:53,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:04:53,310 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 131 [2024-10-13 10:04:53,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 149 transitions, 528 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:53,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:53,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 131 [2024-10-13 10:04:53,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:54,387 INFO L124 PetriNetUnfolderBase]: 1353/8854 cut-off events. [2024-10-13 10:04:54,387 INFO L125 PetriNetUnfolderBase]: For 5628/5712 co-relation queries the response was YES. [2024-10-13 10:04:54,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17164 conditions, 8854 events. 1353/8854 cut-off events. For 5628/5712 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 105730 event pairs, 605 based on Foata normal form. 0/8294 useless extension candidates. Maximal degree in co-relation 16379. Up to 1591 conditions per place. [2024-10-13 10:04:54,435 INFO L140 encePairwiseOnDemand]: 124/131 looper letters, 30 selfloop transitions, 9 changer transitions 1/162 dead transitions. [2024-10-13 10:04:54,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 162 transitions, 662 flow [2024-10-13 10:04:54,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:04:54,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:04:54,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2024-10-13 10:04:54,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9033078880407125 [2024-10-13 10:04:54,437 INFO L175 Difference]: Start difference. First operand has 175 places, 149 transitions, 528 flow. Second operand 3 states and 355 transitions. [2024-10-13 10:04:54,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 162 transitions, 662 flow [2024-10-13 10:04:54,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 162 transitions, 608 flow, removed 3 selfloop flow, removed 17 redundant places. [2024-10-13 10:04:54,521 INFO L231 Difference]: Finished difference. Result has 162 places, 153 transitions, 550 flow [2024-10-13 10:04:54,521 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=550, PETRI_PLACES=162, PETRI_TRANSITIONS=153} [2024-10-13 10:04:54,522 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 28 predicate places. [2024-10-13 10:04:54,522 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 153 transitions, 550 flow [2024-10-13 10:04:54,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:54,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:54,522 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:54,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-10-13 10:04:54,523 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 10:04:54,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:54,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1305300435, now seen corresponding path program 1 times [2024-10-13 10:04:54,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:54,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351403223] [2024-10-13 10:04:54,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:54,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:54,686 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-13 10:04:54,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:54,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351403223] [2024-10-13 10:04:54,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351403223] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:04:54,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25183294] [2024-10-13 10:04:54,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:54,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:04:54,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:04:54,690 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) [2024-10-13 10:04:54,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 10:04:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:54,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 10:04:54,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:04:55,036 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-13 10:04:55,037 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:04:55,179 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-13 10:04:55,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25183294] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:04:55,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:04:55,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 10:04:55,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807366021] [2024-10-13 10:04:55,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:04:55,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 10:04:55,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:04:55,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 10:04:55,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-10-13 10:04:55,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 131 [2024-10-13 10:04:55,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 153 transitions, 550 flow. Second operand has 10 states, 10 states have (on average 108.4) internal successors, (1084), 10 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:55,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:04:55,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 131 [2024-10-13 10:04:55,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:04:55,791 INFO L124 PetriNetUnfolderBase]: 1022/5505 cut-off events. [2024-10-13 10:04:55,791 INFO L125 PetriNetUnfolderBase]: For 3594/3790 co-relation queries the response was YES. [2024-10-13 10:04:55,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10593 conditions, 5505 events. 1022/5505 cut-off events. For 3594/3790 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 55239 event pairs, 238 based on Foata normal form. 80/5465 useless extension candidates. Maximal degree in co-relation 9919. Up to 562 conditions per place. [2024-10-13 10:04:55,817 INFO L140 encePairwiseOnDemand]: 125/131 looper letters, 53 selfloop transitions, 7 changer transitions 8/196 dead transitions. [2024-10-13 10:04:55,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 196 transitions, 826 flow [2024-10-13 10:04:55,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 10:04:55,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 10:04:55,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 699 transitions. [2024-10-13 10:04:55,818 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8893129770992366 [2024-10-13 10:04:55,818 INFO L175 Difference]: Start difference. First operand has 162 places, 153 transitions, 550 flow. Second operand 6 states and 699 transitions. [2024-10-13 10:04:55,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 196 transitions, 826 flow [2024-10-13 10:04:55,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 196 transitions, 808 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 10:04:55,833 INFO L231 Difference]: Finished difference. Result has 167 places, 155 transitions, 564 flow [2024-10-13 10:04:55,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=564, PETRI_PLACES=167, PETRI_TRANSITIONS=155} [2024-10-13 10:04:55,834 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 33 predicate places. [2024-10-13 10:04:55,834 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 155 transitions, 564 flow [2024-10-13 10:04:55,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 108.4) internal successors, (1084), 10 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:04:55,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:04:55,835 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:04:55,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-13 10:04:56,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-10-13 10:04:56,035 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 10:04:56,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:04:56,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1814708090, now seen corresponding path program 1 times [2024-10-13 10:04:56,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:04:56,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425376886] [2024-10-13 10:04:56,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:56,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:04:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:57,709 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 4 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:57,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:04:57,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425376886] [2024-10-13 10:04:57,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425376886] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:04:57,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180374866] [2024-10-13 10:04:57,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:04:57,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:04:57,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:04:57,712 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) [2024-10-13 10:04:57,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 10:04:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:04:57,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-13 10:04:57,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:04:58,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-13 10:04:58,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 10:04:58,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-10-13 10:04:58,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-13 10:04:58,787 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 4 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:04:58,788 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:05:00,728 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 52 treesize of output 48 [2024-10-13 10:05:00,732 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 112 treesize of output 104 [2024-10-13 10:05:00,834 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 54 treesize of output 50 [2024-10-13 10:05:00,839 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 260 treesize of output 244 [2024-10-13 10:05:02,073 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 4 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:05:02,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180374866] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:05:02,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:05:02,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 18] total 53 [2024-10-13 10:05:02,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300933883] [2024-10-13 10:05:02,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:05:02,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-10-13 10:05:02,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:05:02,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-10-13 10:05:02,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=2499, Unknown=0, NotChecked=0, Total=2756 [2024-10-13 10:05:09,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 131 [2024-10-13 10:05:09,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 155 transitions, 564 flow. Second operand has 53 states, 53 states have (on average 96.62264150943396) internal successors, (5121), 53 states have internal predecessors, (5121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:05:09,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:05:09,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 131 [2024-10-13 10:05:09,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:05:12,789 INFO L124 PetriNetUnfolderBase]: 1748/7131 cut-off events. [2024-10-13 10:05:12,790 INFO L125 PetriNetUnfolderBase]: For 4628/4824 co-relation queries the response was YES. [2024-10-13 10:05:12,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15278 conditions, 7131 events. 1748/7131 cut-off events. For 4628/4824 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 69692 event pairs, 87 based on Foata normal form. 24/6945 useless extension candidates. Maximal degree in co-relation 6368. Up to 893 conditions per place. [2024-10-13 10:05:12,827 INFO L140 encePairwiseOnDemand]: 113/131 looper letters, 138 selfloop transitions, 29 changer transitions 8/284 dead transitions. [2024-10-13 10:05:12,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 284 transitions, 1295 flow [2024-10-13 10:05:12,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-13 10:05:12,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-13 10:05:12,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2619 transitions. [2024-10-13 10:05:12,830 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7689371697005285 [2024-10-13 10:05:12,830 INFO L175 Difference]: Start difference. First operand has 167 places, 155 transitions, 564 flow. Second operand 26 states and 2619 transitions. [2024-10-13 10:05:12,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 284 transitions, 1295 flow [2024-10-13 10:05:12,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 284 transitions, 1287 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 10:05:12,846 INFO L231 Difference]: Finished difference. Result has 199 places, 164 transitions, 672 flow [2024-10-13 10:05:12,846 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=672, PETRI_PLACES=199, PETRI_TRANSITIONS=164} [2024-10-13 10:05:12,847 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 65 predicate places. [2024-10-13 10:05:12,847 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 164 transitions, 672 flow [2024-10-13 10:05:12,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 96.62264150943396) internal successors, (5121), 53 states have internal predecessors, (5121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:05:12,849 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:05:12,850 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:05:12,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-13 10:05:13,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-10-13 10:05:13,054 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 10:05:13,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:05:13,054 INFO L85 PathProgramCache]: Analyzing trace with hash -714337096, now seen corresponding path program 2 times [2024-10-13 10:05:13,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:05:13,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879100487] [2024-10-13 10:05:13,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:05:13,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:05:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:05:15,009 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 4 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:05:15,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:05:15,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879100487] [2024-10-13 10:05:15,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879100487] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:05:15,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555778616] [2024-10-13 10:05:15,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 10:05:15,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:05:15,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:05:15,013 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:05:15,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 10:05:15,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 10:05:15,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 10:05:15,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-13 10:05:15,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:05:15,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-13 10:05:15,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 10:05:15,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-10-13 10:05:15,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 10:05:15,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-10-13 10:05:16,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 10:05:16,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-10-13 10:05:16,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-13 10:05:16,300 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 18 proven. 96 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 10:05:16,300 INFO L311 TraceCheckSpWp]: Computing backward predicates...