./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.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 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 13:49:42,714 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 13:49:42,803 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-20 13:49:42,807 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 13:49:42,808 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 13:49:42,837 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 13:49:42,839 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 13:49:42,840 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 13:49:42,840 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 13:49:42,842 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 13:49:42,842 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 13:49:42,843 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 13:49:42,843 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 13:49:42,845 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 13:49:42,846 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 13:49:42,846 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 13:49:42,846 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 13:49:42,846 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 13:49:42,847 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 13:49:42,847 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 13:49:42,847 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 13:49:42,850 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 13:49:42,851 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-20 13:49:42,851 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 13:49:42,851 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 13:49:42,851 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 13:49:42,852 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 13:49:42,853 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 13:49:42,853 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 13:49:42,854 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 13:49:42,854 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 13:49:42,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:49:42,854 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 13:49:42,855 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 13:49:42,855 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 13:49:42,855 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 13:49:42,855 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 13:49:42,856 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 13:49:42,856 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 13:49:42,856 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 13:49:42,856 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 13:49:42,857 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 [2024-11-20 13:49:43,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 13:49:43,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 13:49:43,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 13:49:43,131 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 13:49:43,131 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 13:49:43,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2024-11-20 13:49:44,544 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 13:49:44,805 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 13:49:44,806 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2024-11-20 13:49:44,818 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bdc710bc/8cdc4cb683204872a2496070b92ace2a/FLAG8ac69d7f8 [2024-11-20 13:49:44,832 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bdc710bc/8cdc4cb683204872a2496070b92ace2a [2024-11-20 13:49:44,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 13:49:44,836 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 13:49:44,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 13:49:44,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 13:49:44,843 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 13:49:44,844 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:49:44" (1/1) ... [2024-11-20 13:49:44,845 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@339e7ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:49:44, skipping insertion in model container [2024-11-20 13:49:44,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:49:44" (1/1) ... [2024-11-20 13:49:44,898 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 13:49:45,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:49:45,300 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 13:49:45,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:49:45,411 INFO L204 MainTranslator]: Completed translation [2024-11-20 13:49:45,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:49:45 WrapperNode [2024-11-20 13:49:45,412 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 13:49:45,413 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 13:49:45,413 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 13:49:45,414 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 13:49:45,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:49:45" (1/1) ... [2024-11-20 13:49:45,442 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:49:45" (1/1) ... [2024-11-20 13:49:45,478 INFO L138 Inliner]: procedures = 171, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 105 [2024-11-20 13:49:45,478 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 13:49:45,479 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 13:49:45,479 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 13:49:45,479 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 13:49:45,491 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:49:45" (1/1) ... [2024-11-20 13:49:45,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:49:45" (1/1) ... [2024-11-20 13:49:45,494 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:49:45" (1/1) ... [2024-11-20 13:49:45,497 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:49:45" (1/1) ... [2024-11-20 13:49:45,506 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:49:45" (1/1) ... [2024-11-20 13:49:45,514 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:49:45" (1/1) ... [2024-11-20 13:49:45,520 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:49:45" (1/1) ... [2024-11-20 13:49:45,525 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:49:45" (1/1) ... [2024-11-20 13:49:45,532 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 13:49:45,533 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 13:49:45,533 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 13:49:45,533 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 13:49:45,534 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:49:45" (1/1) ... [2024-11-20 13:49:45,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:49:45,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:49:45,571 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 13:49:45,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 13:49:45,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-20 13:49:45,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-20 13:49:45,627 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-20 13:49:45,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 13:49:45,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 13:49:45,627 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-20 13:49:45,628 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-20 13:49:45,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 13:49:45,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-20 13:49:45,629 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-20 13:49:45,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 13:49:45,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 13:49:45,631 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 13:49:45,768 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 13:49:45,770 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 13:49:46,055 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 13:49:46,055 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 13:49:46,108 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 13:49:46,108 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-20 13:49:46,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:49:46 BoogieIcfgContainer [2024-11-20 13:49:46,109 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 13:49:46,112 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 13:49:46,112 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 13:49:46,116 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 13:49:46,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:49:44" (1/3) ... [2024-11-20 13:49:46,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472a82b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:49:46, skipping insertion in model container [2024-11-20 13:49:46,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:49:45" (2/3) ... [2024-11-20 13:49:46,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472a82b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:49:46, skipping insertion in model container [2024-11-20 13:49:46,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:49:46" (3/3) ... [2024-11-20 13:49:46,120 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_24-sound_lock_racing.i [2024-11-20 13:49:46,138 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 13:49:46,138 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-20 13:49:46,138 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 13:49:46,203 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-20 13:49:46,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 155 transitions, 317 flow [2024-11-20 13:49:46,339 INFO L124 PetriNetUnfolderBase]: 20/214 cut-off events. [2024-11-20 13:49:46,339 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 13:49:46,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 214 events. 20/214 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 621 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2024-11-20 13:49:46,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 155 transitions, 317 flow [2024-11-20 13:49:46,356 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 155 transitions, 317 flow [2024-11-20 13:49:46,365 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:49:46,371 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;@6db5cd22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:49:46,371 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-11-20 13:49:46,390 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 13:49:46,390 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-11-20 13:49:46,390 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 13:49:46,391 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:49:46,392 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:49:46,393 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-20 13:49:46,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:49:46,398 INFO L85 PathProgramCache]: Analyzing trace with hash -778459379, now seen corresponding path program 1 times [2024-11-20 13:49:46,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:49:46,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093871603] [2024-11-20 13:49:46,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:49:46,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:49:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:49:46,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:49:46,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:49:46,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093871603] [2024-11-20 13:49:46,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093871603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:49:46,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:49:46,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 13:49:46,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604661506] [2024-11-20 13:49:46,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:49:46,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:49:46,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:49:46,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:49:46,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:49:46,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 155 [2024-11-20 13:49:46,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 155 transitions, 317 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:49:46,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:49:46,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 155 [2024-11-20 13:49:46,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:49:47,049 INFO L124 PetriNetUnfolderBase]: 49/571 cut-off events. [2024-11-20 13:49:47,050 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-20 13:49:47,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 692 conditions, 571 events. 49/571 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2733 event pairs, 35 based on Foata normal form. 63/577 useless extension candidates. Maximal degree in co-relation 607. Up to 108 conditions per place. [2024-11-20 13:49:47,057 INFO L140 encePairwiseOnDemand]: 140/155 looper letters, 22 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2024-11-20 13:49:47,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 147 transitions, 349 flow [2024-11-20 13:49:47,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:49:47,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 13:49:47,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 416 transitions. [2024-11-20 13:49:47,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8946236559139785 [2024-11-20 13:49:47,075 INFO L175 Difference]: Start difference. First operand has 144 places, 155 transitions, 317 flow. Second operand 3 states and 416 transitions. [2024-11-20 13:49:47,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 147 transitions, 349 flow [2024-11-20 13:49:47,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 147 transitions, 349 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 13:49:47,085 INFO L231 Difference]: Finished difference. Result has 145 places, 141 transitions, 297 flow [2024-11-20 13:49:47,087 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=297, PETRI_PLACES=145, PETRI_TRANSITIONS=141} [2024-11-20 13:49:47,093 INFO L277 CegarLoopForPetriNet]: 144 programPoint places, 1 predicate places. [2024-11-20 13:49:47,093 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 141 transitions, 297 flow [2024-11-20 13:49:47,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:49:47,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:49:47,094 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:49:47,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 13:49:47,095 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-20 13:49:47,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:49:47,097 INFO L85 PathProgramCache]: Analyzing trace with hash 235746507, now seen corresponding path program 1 times [2024-11-20 13:49:47,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:49:47,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104628673] [2024-11-20 13:49:47,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:49:47,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:49:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:49:47,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:49:47,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:49:47,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104628673] [2024-11-20 13:49:47,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104628673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:49:47,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:49:47,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 13:49:47,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368133388] [2024-11-20 13:49:47,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:49:47,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 13:49:47,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:49:47,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 13:49:47,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:49:47,896 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 155 [2024-11-20 13:49:47,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 141 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:49:47,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:49:47,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 155 [2024-11-20 13:49:47,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:49:48,069 INFO L124 PetriNetUnfolderBase]: 109/671 cut-off events. [2024-11-20 13:49:48,069 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-20 13:49:48,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 671 events. 109/671 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3789 event pairs, 7 based on Foata normal form. 0/618 useless extension candidates. Maximal degree in co-relation 859. Up to 181 conditions per place. [2024-11-20 13:49:48,077 INFO L140 encePairwiseOnDemand]: 149/155 looper letters, 48 selfloop transitions, 5 changer transitions 0/164 dead transitions. [2024-11-20 13:49:48,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 164 transitions, 449 flow [2024-11-20 13:49:48,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:49:48,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 13:49:48,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 726 transitions. [2024-11-20 13:49:48,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7806451612903226 [2024-11-20 13:49:48,082 INFO L175 Difference]: Start difference. First operand has 145 places, 141 transitions, 297 flow. Second operand 6 states and 726 transitions. [2024-11-20 13:49:48,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 164 transitions, 449 flow [2024-11-20 13:49:48,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 164 transitions, 445 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 13:49:48,088 INFO L231 Difference]: Finished difference. Result has 147 places, 140 transitions, 301 flow [2024-11-20 13:49:48,089 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=147, PETRI_TRANSITIONS=140} [2024-11-20 13:49:48,090 INFO L277 CegarLoopForPetriNet]: 144 programPoint places, 3 predicate places. [2024-11-20 13:49:48,090 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 140 transitions, 301 flow [2024-11-20 13:49:48,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:49:48,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:49:48,091 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:49:48,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 13:49:48,092 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-20 13:49:48,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:49:48,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1801427432, now seen corresponding path program 1 times [2024-11-20 13:49:48,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:49:48,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110865109] [2024-11-20 13:49:48,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:49:48,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:49:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:49:48,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:49:48,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:49:48,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110865109] [2024-11-20 13:49:48,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110865109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:49:48,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:49:48,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 13:49:48,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238877171] [2024-11-20 13:49:48,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:49:48,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:49:48,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:49:48,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:49:48,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:49:48,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 155 [2024-11-20 13:49:48,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 140 transitions, 301 flow. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:49:48,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:49:48,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 155 [2024-11-20 13:49:48,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:49:48,310 INFO L124 PetriNetUnfolderBase]: 92/803 cut-off events. [2024-11-20 13:49:48,310 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-20 13:49:48,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1039 conditions, 803 events. 92/803 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 4684 event pairs, 30 based on Foata normal form. 0/733 useless extension candidates. Maximal degree in co-relation 962. Up to 125 conditions per place. [2024-11-20 13:49:48,314 INFO L140 encePairwiseOnDemand]: 146/155 looper letters, 30 selfloop transitions, 6 changer transitions 0/153 dead transitions. [2024-11-20 13:49:48,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 153 transitions, 402 flow [2024-11-20 13:49:48,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:49:48,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 13:49:48,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 396 transitions. [2024-11-20 13:49:48,317 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8516129032258064 [2024-11-20 13:49:48,317 INFO L175 Difference]: Start difference. First operand has 147 places, 140 transitions, 301 flow. Second operand 3 states and 396 transitions. [2024-11-20 13:49:48,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 153 transitions, 402 flow [2024-11-20 13:49:48,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 153 transitions, 392 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-20 13:49:48,321 INFO L231 Difference]: Finished difference. Result has 144 places, 142 transitions, 329 flow [2024-11-20 13:49:48,321 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=329, PETRI_PLACES=144, PETRI_TRANSITIONS=142} [2024-11-20 13:49:48,322 INFO L277 CegarLoopForPetriNet]: 144 programPoint places, 0 predicate places. [2024-11-20 13:49:48,322 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 142 transitions, 329 flow [2024-11-20 13:49:48,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:49:48,323 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:49:48,323 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:49:48,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 13:49:48,323 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-20 13:49:48,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:49:48,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1816965716, now seen corresponding path program 1 times [2024-11-20 13:49:48,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:49:48,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693171527] [2024-11-20 13:49:48,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:49:48,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:49:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:49:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:49:48,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:49:48,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693171527] [2024-11-20 13:49:48,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693171527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:49:48,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:49:48,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 13:49:48,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316019870] [2024-11-20 13:49:48,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:49:48,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:49:48,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:49:48,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:49:48,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:49:48,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 155 [2024-11-20 13:49:48,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 142 transitions, 329 flow. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:49:48,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:49:48,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 155 [2024-11-20 13:49:48,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:49:48,526 INFO L124 PetriNetUnfolderBase]: 95/805 cut-off events. [2024-11-20 13:49:48,526 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-11-20 13:49:48,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1139 conditions, 805 events. 95/805 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4778 event pairs, 60 based on Foata normal form. 0/736 useless extension candidates. Maximal degree in co-relation 1062. Up to 189 conditions per place. [2024-11-20 13:49:48,531 INFO L140 encePairwiseOnDemand]: 150/155 looper letters, 27 selfloop transitions, 4 changer transitions 0/149 dead transitions. [2024-11-20 13:49:48,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 149 transitions, 409 flow [2024-11-20 13:49:48,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:49:48,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 13:49:48,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2024-11-20 13:49:48,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.843010752688172 [2024-11-20 13:49:48,533 INFO L175 Difference]: Start difference. First operand has 144 places, 142 transitions, 329 flow. Second operand 3 states and 392 transitions. [2024-11-20 13:49:48,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 149 transitions, 409 flow [2024-11-20 13:49:48,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 149 transitions, 395 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 13:49:48,537 INFO L231 Difference]: Finished difference. Result has 146 places, 145 transitions, 349 flow [2024-11-20 13:49:48,537 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=142, 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=349, PETRI_PLACES=146, PETRI_TRANSITIONS=145} [2024-11-20 13:49:48,538 INFO L277 CegarLoopForPetriNet]: 144 programPoint places, 2 predicate places. [2024-11-20 13:49:48,539 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 145 transitions, 349 flow [2024-11-20 13:49:48,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:49:48,539 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:49:48,540 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, 1, 1, 1] [2024-11-20 13:49:48,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 13:49:48,540 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-20 13:49:48,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:49:48,541 INFO L85 PathProgramCache]: Analyzing trace with hash 517944477, now seen corresponding path program 1 times [2024-11-20 13:49:48,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:49:48,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644606591] [2024-11-20 13:49:48,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:49:48,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:49:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:49:48,566 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 13:49:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:49:48,613 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 13:49:48,613 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 13:49:48,615 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2024-11-20 13:49:48,616 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2024-11-20 13:49:48,618 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2024-11-20 13:49:48,618 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2024-11-20 13:49:48,618 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2024-11-20 13:49:48,619 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2024-11-20 13:49:48,619 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2024-11-20 13:49:48,619 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2024-11-20 13:49:48,619 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2024-11-20 13:49:48,619 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2024-11-20 13:49:48,619 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2024-11-20 13:49:48,620 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2024-11-20 13:49:48,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 13:49:48,620 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-20 13:49:48,623 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 13:49:48,623 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-20 13:49:48,659 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 13:49:48,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 204 transitions, 424 flow [2024-11-20 13:49:48,702 INFO L124 PetriNetUnfolderBase]: 35/350 cut-off events. [2024-11-20 13:49:48,702 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-20 13:49:48,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 350 events. 35/350 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1173 event pairs, 0 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 216. Up to 8 conditions per place. [2024-11-20 13:49:48,706 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 204 transitions, 424 flow [2024-11-20 13:49:48,711 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 204 transitions, 424 flow [2024-11-20 13:49:48,713 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:49:48,714 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;@6db5cd22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:49:48,715 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-20 13:49:48,719 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 13:49:48,721 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-11-20 13:49:48,721 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 13:49:48,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:49:48,721 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:49:48,722 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-20 13:49:48,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:49:48,722 INFO L85 PathProgramCache]: Analyzing trace with hash 598020493, now seen corresponding path program 1 times [2024-11-20 13:49:48,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:49:48,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442742615] [2024-11-20 13:49:48,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:49:48,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:49:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:49:48,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:49:48,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:49:48,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442742615] [2024-11-20 13:49:48,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442742615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:49:48,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:49:48,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 13:49:48,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332271208] [2024-11-20 13:49:48,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:49:48,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:49:48,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:49:48,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:49:48,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:49:48,794 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 204 [2024-11-20 13:49:48,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 204 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:49:48,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:49:48,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 204 [2024-11-20 13:49:48,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:49:49,372 INFO L124 PetriNetUnfolderBase]: 789/4313 cut-off events. [2024-11-20 13:49:49,372 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-20 13:49:49,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5666 conditions, 4313 events. 789/4313 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 41133 event pairs, 348 based on Foata normal form. 749/4675 useless extension candidates. Maximal degree in co-relation 721. Up to 1303 conditions per place. [2024-11-20 13:49:49,402 INFO L140 encePairwiseOnDemand]: 183/204 looper letters, 31 selfloop transitions, 2 changer transitions 0/191 dead transitions. [2024-11-20 13:49:49,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 191 transitions, 464 flow [2024-11-20 13:49:49,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:49:49,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 13:49:49,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2024-11-20 13:49:49,404 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8758169934640523 [2024-11-20 13:49:49,405 INFO L175 Difference]: Start difference. First operand has 188 places, 204 transitions, 424 flow. Second operand 3 states and 536 transitions. [2024-11-20 13:49:49,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 191 transitions, 464 flow [2024-11-20 13:49:49,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 191 transitions, 464 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 13:49:49,408 INFO L231 Difference]: Finished difference. Result has 189 places, 185 transitions, 396 flow [2024-11-20 13:49:49,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=396, PETRI_PLACES=189, PETRI_TRANSITIONS=185} [2024-11-20 13:49:49,409 INFO L277 CegarLoopForPetriNet]: 188 programPoint places, 1 predicate places. [2024-11-20 13:49:49,409 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 185 transitions, 396 flow [2024-11-20 13:49:49,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:49:49,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:49:49,410 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:49:49,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 13:49:49,411 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-20 13:49:49,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:49:49,411 INFO L85 PathProgramCache]: Analyzing trace with hash 182982859, now seen corresponding path program 1 times [2024-11-20 13:49:49,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:49:49,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032990517] [2024-11-20 13:49:49,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:49:49,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:49:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:49:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:49:49,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:49:49,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032990517] [2024-11-20 13:49:49,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032990517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:49:49,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:49:49,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 13:49:49,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793103735] [2024-11-20 13:49:49,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:49:49,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 13:49:49,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:49:49,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 13:49:49,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:49:49,850 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 204 [2024-11-20 13:49:49,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 185 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 148.5) internal successors, (891), 6 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:49:49,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:49:49,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 204 [2024-11-20 13:49:49,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:49:50,757 INFO L124 PetriNetUnfolderBase]: 1719/5688 cut-off events. [2024-11-20 13:49:50,758 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2024-11-20 13:49:50,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8700 conditions, 5688 events. 1719/5688 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 54074 event pairs, 222 based on Foata normal form. 0/5295 useless extension candidates. Maximal degree in co-relation 1233. Up to 2015 conditions per place. [2024-11-20 13:49:50,803 INFO L140 encePairwiseOnDemand]: 198/204 looper letters, 80 selfloop transitions, 6 changer transitions 0/232 dead transitions. [2024-11-20 13:49:50,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 232 transitions, 662 flow [2024-11-20 13:49:50,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:49:50,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 13:49:50,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 968 transitions. [2024-11-20 13:49:50,807 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7908496732026143 [2024-11-20 13:49:50,807 INFO L175 Difference]: Start difference. First operand has 189 places, 185 transitions, 396 flow. Second operand 6 states and 968 transitions. [2024-11-20 13:49:50,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 232 transitions, 662 flow [2024-11-20 13:49:50,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 232 transitions, 660 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 13:49:50,814 INFO L231 Difference]: Finished difference. Result has 192 places, 184 transitions, 404 flow [2024-11-20 13:49:50,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=404, PETRI_PLACES=192, PETRI_TRANSITIONS=184} [2024-11-20 13:49:50,816 INFO L277 CegarLoopForPetriNet]: 188 programPoint places, 4 predicate places. [2024-11-20 13:49:50,816 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 184 transitions, 404 flow [2024-11-20 13:49:50,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.5) internal successors, (891), 6 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:49:50,817 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:49:50,817 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:49:50,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 13:49:50,818 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-20 13:49:50,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:49:50,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1648112099, now seen corresponding path program 1 times [2024-11-20 13:49:50,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:49:50,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125484764] [2024-11-20 13:49:50,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:49:50,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:49:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:49:50,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:49:50,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:49:50,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125484764] [2024-11-20 13:49:50,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125484764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:49:50,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:49:50,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 13:49:50,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874219049] [2024-11-20 13:49:50,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:49:50,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:49:50,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:49:50,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:49:50,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:49:50,924 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 204 [2024-11-20 13:49:50,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 184 transitions, 404 flow. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:49:50,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:49:50,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 204 [2024-11-20 13:49:50,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:49:52,689 INFO L124 PetriNetUnfolderBase]: 3894/14611 cut-off events. [2024-11-20 13:49:52,690 INFO L125 PetriNetUnfolderBase]: For 238/238 co-relation queries the response was YES. [2024-11-20 13:49:52,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21162 conditions, 14611 events. 3894/14611 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 164005 event pairs, 1530 based on Foata normal form. 0/13069 useless extension candidates. Maximal degree in co-relation 20044. Up to 3516 conditions per place. [2024-11-20 13:49:52,792 INFO L140 encePairwiseOnDemand]: 185/204 looper letters, 58 selfloop transitions, 14 changer transitions 0/217 dead transitions. [2024-11-20 13:49:52,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 217 transitions, 625 flow [2024-11-20 13:49:52,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:49:52,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 13:49:52,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2024-11-20 13:49:52,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8415032679738562 [2024-11-20 13:49:52,795 INFO L175 Difference]: Start difference. First operand has 192 places, 184 transitions, 404 flow. Second operand 3 states and 515 transitions. [2024-11-20 13:49:52,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 217 transitions, 625 flow [2024-11-20 13:49:52,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 217 transitions, 613 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-20 13:49:52,802 INFO L231 Difference]: Finished difference. Result has 191 places, 198 transitions, 514 flow [2024-11-20 13:49:52,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=514, PETRI_PLACES=191, PETRI_TRANSITIONS=198} [2024-11-20 13:49:52,803 INFO L277 CegarLoopForPetriNet]: 188 programPoint places, 3 predicate places. [2024-11-20 13:49:52,804 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 198 transitions, 514 flow [2024-11-20 13:49:52,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:49:52,805 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:49:52,805 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:49:52,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 13:49:52,805 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-20 13:49:52,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:49:52,806 INFO L85 PathProgramCache]: Analyzing trace with hash -368572323, now seen corresponding path program 1 times [2024-11-20 13:49:52,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:49:52,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178038770] [2024-11-20 13:49:52,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:49:52,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:49:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:49:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:49:52,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:49:52,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178038770] [2024-11-20 13:49:52,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178038770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:49:52,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:49:52,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 13:49:52,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271700266] [2024-11-20 13:49:52,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:49:52,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:49:52,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:49:52,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:49:52,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:49:52,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 204 [2024-11-20 13:49:52,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 198 transitions, 514 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:49:52,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:49:52,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 204 [2024-11-20 13:49:52,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:49:54,638 INFO L124 PetriNetUnfolderBase]: 4021/16464 cut-off events. [2024-11-20 13:49:54,639 INFO L125 PetriNetUnfolderBase]: For 4445/4626 co-relation queries the response was YES. [2024-11-20 13:49:54,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27152 conditions, 16464 events. 4021/16464 cut-off events. For 4445/4626 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 193929 event pairs, 2411 based on Foata normal form. 46/14965 useless extension candidates. Maximal degree in co-relation 13739. Up to 5498 conditions per place. [2024-11-20 13:49:54,741 INFO L140 encePairwiseOnDemand]: 195/204 looper letters, 52 selfloop transitions, 14 changer transitions 0/222 dead transitions. [2024-11-20 13:49:54,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 222 transitions, 732 flow [2024-11-20 13:49:54,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:49:54,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 13:49:54,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2024-11-20 13:49:54,744 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8316993464052288 [2024-11-20 13:49:54,744 INFO L175 Difference]: Start difference. First operand has 191 places, 198 transitions, 514 flow. Second operand 3 states and 509 transitions. [2024-11-20 13:49:54,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 222 transitions, 732 flow [2024-11-20 13:49:54,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 222 transitions, 694 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 13:49:54,758 INFO L231 Difference]: Finished difference. Result has 193 places, 210 transitions, 612 flow [2024-11-20 13:49:54,758 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=612, PETRI_PLACES=193, PETRI_TRANSITIONS=210} [2024-11-20 13:49:54,759 INFO L277 CegarLoopForPetriNet]: 188 programPoint places, 5 predicate places. [2024-11-20 13:49:54,759 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 210 transitions, 612 flow [2024-11-20 13:49:54,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:49:54,760 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:49:54,760 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:49:54,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 13:49:54,760 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-20 13:49:54,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:49:54,761 INFO L85 PathProgramCache]: Analyzing trace with hash 556786939, now seen corresponding path program 1 times [2024-11-20 13:49:54,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:49:54,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853881083] [2024-11-20 13:49:54,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:49:54,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:49:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:49:54,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:49:54,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:49:54,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853881083] [2024-11-20 13:49:54,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853881083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:49:54,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213271773] [2024-11-20 13:49:54,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:49:54,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:49:54,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:49:54,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:49:54,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 13:49:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:49:54,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 13:49:54,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:49:55,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:49:55,037 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:49:55,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:49:55,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213271773] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:49:55,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:49:55,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-20 13:49:55,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523682109] [2024-11-20 13:49:55,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:49:55,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 13:49:55,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:49:55,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 13:49:55,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 13:49:55,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 204 [2024-11-20 13:49:55,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 210 transitions, 612 flow. Second operand has 10 states, 10 states have (on average 158.5) internal successors, (1585), 10 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:49:55,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:49:55,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 204 [2024-11-20 13:49:55,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:49:55,916 INFO L124 PetriNetUnfolderBase]: 806/4161 cut-off events. [2024-11-20 13:49:55,916 INFO L125 PetriNetUnfolderBase]: For 628/679 co-relation queries the response was YES. [2024-11-20 13:49:55,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6432 conditions, 4161 events. 806/4161 cut-off events. For 628/679 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 39610 event pairs, 47 based on Foata normal form. 110/3965 useless extension candidates. Maximal degree in co-relation 3055. Up to 470 conditions per place. [2024-11-20 13:49:55,955 INFO L140 encePairwiseOnDemand]: 199/204 looper letters, 72 selfloop transitions, 7 changer transitions 0/217 dead transitions. [2024-11-20 13:49:55,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 217 transitions, 738 flow [2024-11-20 13:49:55,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 13:49:55,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 13:49:55,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1485 transitions. [2024-11-20 13:49:55,960 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8088235294117647 [2024-11-20 13:49:55,960 INFO L175 Difference]: Start difference. First operand has 193 places, 210 transitions, 612 flow. Second operand 9 states and 1485 transitions. [2024-11-20 13:49:55,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 217 transitions, 738 flow [2024-11-20 13:49:55,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 217 transitions, 718 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 13:49:55,968 INFO L231 Difference]: Finished difference. Result has 156 places, 161 transitions, 462 flow [2024-11-20 13:49:55,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=462, PETRI_PLACES=156, PETRI_TRANSITIONS=161} [2024-11-20 13:49:55,969 INFO L277 CegarLoopForPetriNet]: 188 programPoint places, -32 predicate places. [2024-11-20 13:49:55,970 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 161 transitions, 462 flow [2024-11-20 13:49:55,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 158.5) internal successors, (1585), 10 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:49:55,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:49:55,971 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:49:55,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 13:49:56,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-20 13:49:56,173 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-20 13:49:56,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:49:56,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1630048700, now seen corresponding path program 1 times [2024-11-20 13:49:56,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:49:56,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544963122] [2024-11-20 13:49:56,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:49:56,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:49:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:49:56,233 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-20 13:49:56,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:49:56,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544963122] [2024-11-20 13:49:56,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544963122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:49:56,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:49:56,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 13:49:56,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660370986] [2024-11-20 13:49:56,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:49:56,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:49:56,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:49:56,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:49:56,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:49:56,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 204 [2024-11-20 13:49:56,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 161 transitions, 462 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:49:56,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:49:56,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 204 [2024-11-20 13:49:56,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:49:56,541 INFO L124 PetriNetUnfolderBase]: 261/1302 cut-off events. [2024-11-20 13:49:56,545 INFO L125 PetriNetUnfolderBase]: For 448/469 co-relation queries the response was YES. [2024-11-20 13:49:56,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 1302 events. 261/1302 cut-off events. For 448/469 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 8676 event pairs, 132 based on Foata normal form. 7/1216 useless extension candidates. Maximal degree in co-relation 2262. Up to 459 conditions per place. [2024-11-20 13:49:56,554 INFO L140 encePairwiseOnDemand]: 196/204 looper letters, 42 selfloop transitions, 12 changer transitions 0/175 dead transitions. [2024-11-20 13:49:56,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 175 transitions, 614 flow [2024-11-20 13:49:56,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:49:56,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 13:49:56,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2024-11-20 13:49:56,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8088235294117647 [2024-11-20 13:49:56,557 INFO L175 Difference]: Start difference. First operand has 156 places, 161 transitions, 462 flow. Second operand 3 states and 495 transitions. [2024-11-20 13:49:56,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 175 transitions, 614 flow [2024-11-20 13:49:56,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 175 transitions, 599 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-20 13:49:56,564 INFO L231 Difference]: Finished difference. Result has 155 places, 169 transitions, 545 flow [2024-11-20 13:49:56,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=545, PETRI_PLACES=155, PETRI_TRANSITIONS=169} [2024-11-20 13:49:56,565 INFO L277 CegarLoopForPetriNet]: 188 programPoint places, -33 predicate places. [2024-11-20 13:49:56,566 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 169 transitions, 545 flow [2024-11-20 13:49:56,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:49:56,566 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:49:56,566 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:49:56,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 13:49:56,567 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-20 13:49:56,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:49:56,567 INFO L85 PathProgramCache]: Analyzing trace with hash -617759989, now seen corresponding path program 1 times [2024-11-20 13:49:56,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:49:56,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427697728] [2024-11-20 13:49:56,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:49:56,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:49:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:49:56,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:49:56,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:49:56,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427697728] [2024-11-20 13:49:56,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427697728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:49:56,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:49:56,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 13:49:56,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333265056] [2024-11-20 13:49:56,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:49:56,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:49:56,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:49:56,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:49:56,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:49:56,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 204 [2024-11-20 13:49:56,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 169 transitions, 545 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:49:56,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:49:56,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 204 [2024-11-20 13:49:56,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:49:56,859 INFO L124 PetriNetUnfolderBase]: 292/1374 cut-off events. [2024-11-20 13:49:56,859 INFO L125 PetriNetUnfolderBase]: For 1085/1120 co-relation queries the response was YES. [2024-11-20 13:49:56,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2801 conditions, 1374 events. 292/1374 cut-off events. For 1085/1120 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 9372 event pairs, 134 based on Foata normal form. 9/1306 useless extension candidates. Maximal degree in co-relation 2719. Up to 501 conditions per place. [2024-11-20 13:49:56,874 INFO L140 encePairwiseOnDemand]: 196/204 looper letters, 49 selfloop transitions, 12 changer transitions 0/184 dead transitions. [2024-11-20 13:49:56,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 184 transitions, 734 flow [2024-11-20 13:49:56,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:49:56,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 13:49:56,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2024-11-20 13:49:56,876 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8104575163398693 [2024-11-20 13:49:56,876 INFO L175 Difference]: Start difference. First operand has 155 places, 169 transitions, 545 flow. Second operand 3 states and 496 transitions. [2024-11-20 13:49:56,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 184 transitions, 734 flow [2024-11-20 13:49:56,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 184 transitions, 706 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 13:49:56,882 INFO L231 Difference]: Finished difference. Result has 157 places, 177 transitions, 631 flow [2024-11-20 13:49:56,882 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=631, PETRI_PLACES=157, PETRI_TRANSITIONS=177} [2024-11-20 13:49:56,883 INFO L277 CegarLoopForPetriNet]: 188 programPoint places, -31 predicate places. [2024-11-20 13:49:56,883 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 177 transitions, 631 flow [2024-11-20 13:49:56,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:49:56,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:49:56,884 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:49:56,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 13:49:56,885 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-20 13:49:56,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:49:56,885 INFO L85 PathProgramCache]: Analyzing trace with hash -785800553, now seen corresponding path program 1 times [2024-11-20 13:49:56,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:49:56,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172824482] [2024-11-20 13:49:56,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:49:56,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:49:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:49:56,913 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 13:49:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:49:56,946 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 13:49:56,947 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 13:49:56,947 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-11-20 13:49:56,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2024-11-20 13:49:56,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2024-11-20 13:49:56,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2024-11-20 13:49:56,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2024-11-20 13:49:56,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2024-11-20 13:49:56,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2024-11-20 13:49:56,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2024-11-20 13:49:56,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2024-11-20 13:49:56,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2024-11-20 13:49:56,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2024-11-20 13:49:56,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2024-11-20 13:49:56,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2024-11-20 13:49:56,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2024-11-20 13:49:56,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2024-11-20 13:49:56,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2024-11-20 13:49:56,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 13:49:56,950 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:49:56,950 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 13:49:56,950 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-20 13:49:56,983 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-20 13:49:56,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 253 transitions, 533 flow [2024-11-20 13:49:57,048 INFO L124 PetriNetUnfolderBase]: 55/531 cut-off events. [2024-11-20 13:49:57,048 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-20 13:49:57,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 531 events. 55/531 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1984 event pairs, 1 based on Foata normal form. 0/444 useless extension candidates. Maximal degree in co-relation 358. Up to 16 conditions per place. [2024-11-20 13:49:57,053 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 253 transitions, 533 flow [2024-11-20 13:49:57,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 253 transitions, 533 flow [2024-11-20 13:49:57,057 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:49:57,057 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;@6db5cd22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:49:57,057 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-20 13:49:57,061 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 13:49:57,061 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-11-20 13:49:57,061 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 13:49:57,061 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:49:57,061 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:49:57,061 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-20 13:49:57,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:49:57,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1041899757, now seen corresponding path program 1 times [2024-11-20 13:49:57,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:49:57,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870153838] [2024-11-20 13:49:57,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:49:57,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:49:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:49:57,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:49:57,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:49:57,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870153838] [2024-11-20 13:49:57,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870153838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:49:57,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:49:57,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 13:49:57,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320576269] [2024-11-20 13:49:57,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:49:57,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:49:57,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:49:57,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:49:57,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:49:57,123 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 253 [2024-11-20 13:49:57,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 253 transitions, 533 flow. Second operand has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:49:57,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:49:57,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 253 [2024-11-20 13:49:57,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:50:01,516 INFO L124 PetriNetUnfolderBase]: 8949/35357 cut-off events. [2024-11-20 13:50:01,516 INFO L125 PetriNetUnfolderBase]: For 937/937 co-relation queries the response was YES. [2024-11-20 13:50:01,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48595 conditions, 35357 events. 8949/35357 cut-off events. For 937/937 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 457962 event pairs, 8324 based on Foata normal form. 7648/39622 useless extension candidates. Maximal degree in co-relation 35526. Up to 12802 conditions per place. [2024-11-20 13:50:01,741 INFO L140 encePairwiseOnDemand]: 226/253 looper letters, 39 selfloop transitions, 2 changer transitions 0/234 dead transitions. [2024-11-20 13:50:01,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 234 transitions, 577 flow [2024-11-20 13:50:01,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:50:01,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 13:50:01,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 655 transitions. [2024-11-20 13:50:01,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8629776021080369 [2024-11-20 13:50:01,746 INFO L175 Difference]: Start difference. First operand has 232 places, 253 transitions, 533 flow. Second operand 3 states and 655 transitions. [2024-11-20 13:50:01,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 234 transitions, 577 flow [2024-11-20 13:50:01,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 234 transitions, 577 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 13:50:01,750 INFO L231 Difference]: Finished difference. Result has 233 places, 228 transitions, 493 flow [2024-11-20 13:50:01,751 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=493, PETRI_PLACES=233, PETRI_TRANSITIONS=228} [2024-11-20 13:50:01,754 INFO L277 CegarLoopForPetriNet]: 232 programPoint places, 1 predicate places. [2024-11-20 13:50:01,754 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 228 transitions, 493 flow [2024-11-20 13:50:01,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:50:01,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:01,754 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:01,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 13:50:01,755 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-20 13:50:01,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:01,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1549201355, now seen corresponding path program 1 times [2024-11-20 13:50:01,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:01,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883907591] [2024-11-20 13:50:01,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:01,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:01,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:50:01,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:50:01,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883907591] [2024-11-20 13:50:01,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883907591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:50:01,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:50:01,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 13:50:01,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770821314] [2024-11-20 13:50:01,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:50:01,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 13:50:01,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:50:01,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 13:50:01,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:50:02,185 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 253 [2024-11-20 13:50:02,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 228 transitions, 493 flow. Second operand has 6 states, 6 states have (on average 183.5) internal successors, (1101), 6 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:50:02,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:50:02,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 253 [2024-11-20 13:50:02,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:50:07,817 INFO L124 PetriNetUnfolderBase]: 19556/50630 cut-off events. [2024-11-20 13:50:07,817 INFO L125 PetriNetUnfolderBase]: For 1427/1427 co-relation queries the response was YES. [2024-11-20 13:50:07,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79790 conditions, 50630 events. 19556/50630 cut-off events. For 1427/1427 co-relation queries the response was YES. Maximal size of possible extension queue 1304. Compared 609707 event pairs, 2086 based on Foata normal form. 0/47257 useless extension candidates. Maximal degree in co-relation 56847. Up to 20048 conditions per place. [2024-11-20 13:50:08,161 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 112 selfloop transitions, 6 changer transitions 0/299 dead transitions. [2024-11-20 13:50:08,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 299 transitions, 871 flow [2024-11-20 13:50:08,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:50:08,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 13:50:08,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1210 transitions. [2024-11-20 13:50:08,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7971014492753623 [2024-11-20 13:50:08,166 INFO L175 Difference]: Start difference. First operand has 233 places, 228 transitions, 493 flow. Second operand 6 states and 1210 transitions. [2024-11-20 13:50:08,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 299 transitions, 871 flow [2024-11-20 13:50:08,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 299 transitions, 869 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 13:50:08,170 INFO L231 Difference]: Finished difference. Result has 236 places, 227 transitions, 501 flow [2024-11-20 13:50:08,171 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=501, PETRI_PLACES=236, PETRI_TRANSITIONS=227} [2024-11-20 13:50:08,171 INFO L277 CegarLoopForPetriNet]: 232 programPoint places, 4 predicate places. [2024-11-20 13:50:08,172 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 227 transitions, 501 flow [2024-11-20 13:50:08,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.5) internal successors, (1101), 6 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:50:08,172 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:08,172 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:08,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 13:50:08,173 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-20 13:50:08,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:08,173 INFO L85 PathProgramCache]: Analyzing trace with hash 552201615, now seen corresponding path program 1 times [2024-11-20 13:50:08,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:08,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243949618] [2024-11-20 13:50:08,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:08,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:08,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:50:08,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:50:08,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243949618] [2024-11-20 13:50:08,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243949618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:50:08,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:50:08,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 13:50:08,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057307032] [2024-11-20 13:50:08,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:50:08,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:50:08,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:50:08,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:50:08,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:50:08,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 253 [2024-11-20 13:50:08,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 227 transitions, 501 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:50:08,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:50:08,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 253 [2024-11-20 13:50:08,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand