./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_19-callback_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_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 a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 09:53:21,515 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 09:53:21,590 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-13 09:53:21,599 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 09:53:21,600 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 09:53:21,632 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 09:53:21,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 09:53:21,633 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 09:53:21,634 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 09:53:21,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 09:53:21,635 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 09:53:21,635 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 09:53:21,635 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 09:53:21,636 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 09:53:21,636 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 09:53:21,637 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 09:53:21,637 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 09:53:21,637 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 09:53:21,638 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 09:53:21,638 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 09:53:21,639 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 09:53:21,643 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 09:53:21,643 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-13 09:53:21,643 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 09:53:21,643 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 09:53:21,644 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 09:53:21,644 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 09:53:21,644 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 09:53:21,645 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 09:53:21,645 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 09:53:21,645 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 09:53:21,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:53:21,646 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 09:53:21,649 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 09:53:21,650 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 09:53:21,650 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 09:53:21,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 09:53:21,650 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 09:53:21,651 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 09:53:21,651 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 09:53:21,651 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 09:53:21,655 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 [2024-10-13 09:53:21,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 09:53:21,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 09:53:21,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 09:53:21,941 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 09:53:21,942 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 09:53:21,943 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i [2024-10-13 09:53:23,460 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 09:53:23,703 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 09:53:23,703 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i [2024-10-13 09:53:23,730 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b611e2b30/ab2997a53ba040e3a4ba286e35e439d3/FLAGa3d250e63 [2024-10-13 09:53:23,743 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b611e2b30/ab2997a53ba040e3a4ba286e35e439d3 [2024-10-13 09:53:23,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 09:53:23,747 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 09:53:23,749 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 09:53:23,750 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 09:53:23,755 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 09:53:23,755 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:53:23" (1/1) ... [2024-10-13 09:53:23,756 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4418e0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:23, skipping insertion in model container [2024-10-13 09:53:23,756 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:53:23" (1/1) ... [2024-10-13 09:53:23,800 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 09:53:24,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:53:24,211 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 09:53:24,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:53:24,364 INFO L204 MainTranslator]: Completed translation [2024-10-13 09:53:24,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:24 WrapperNode [2024-10-13 09:53:24,365 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 09:53:24,366 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 09:53:24,366 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 09:53:24,366 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 09:53:24,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:24" (1/1) ... [2024-10-13 09:53:24,394 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:24" (1/1) ... [2024-10-13 09:53:24,430 INFO L138 Inliner]: procedures = 174, calls = 45, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 174 [2024-10-13 09:53:24,431 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 09:53:24,435 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 09:53:24,435 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 09:53:24,435 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 09:53:24,447 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:24" (1/1) ... [2024-10-13 09:53:24,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:24" (1/1) ... [2024-10-13 09:53:24,456 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:24" (1/1) ... [2024-10-13 09:53:24,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:24" (1/1) ... [2024-10-13 09:53:24,471 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:24" (1/1) ... [2024-10-13 09:53:24,479 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:24" (1/1) ... [2024-10-13 09:53:24,481 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:24" (1/1) ... [2024-10-13 09:53:24,483 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:24" (1/1) ... [2024-10-13 09:53:24,486 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 09:53:24,487 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 09:53:24,487 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 09:53:24,487 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 09:53:24,488 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:24" (1/1) ... [2024-10-13 09:53:24,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:53:24,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:53:24,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 09:53:24,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 09:53:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-13 09:53:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-13 09:53:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 09:53:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 09:53:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 09:53:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-13 09:53:24,580 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-13 09:53:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 09:53:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-13 09:53:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 09:53:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 09:53:24,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 09:53:24,582 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 09:53:24,713 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 09:53:24,717 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 09:53:25,077 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 09:53:25,077 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 09:53:25,133 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 09:53:25,133 INFO L314 CfgBuilder]: Removed 11 assume(true) statements. [2024-10-13 09:53:25,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:53:25 BoogieIcfgContainer [2024-10-13 09:53:25,134 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 09:53:25,136 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 09:53:25,136 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 09:53:25,139 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 09:53:25,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:53:23" (1/3) ... [2024-10-13 09:53:25,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7245d678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:53:25, skipping insertion in model container [2024-10-13 09:53:25,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:24" (2/3) ... [2024-10-13 09:53:25,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7245d678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:53:25, skipping insertion in model container [2024-10-13 09:53:25,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:53:25" (3/3) ... [2024-10-13 09:53:25,142 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_19-callback_racing.i [2024-10-13 09:53:25,159 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 09:53:25,159 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-10-13 09:53:25,159 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 09:53:25,218 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-13 09:53:25,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 181 transitions, 369 flow [2024-10-13 09:53:25,355 INFO L124 PetriNetUnfolderBase]: 27/291 cut-off events. [2024-10-13 09:53:25,356 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:53:25,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 291 events. 27/291 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 962 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 143. Up to 6 conditions per place. [2024-10-13 09:53:25,368 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 181 transitions, 369 flow [2024-10-13 09:53:25,377 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 168 places, 181 transitions, 369 flow [2024-10-13 09:53:25,388 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:53:25,396 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;@5205b91a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:53:25,396 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-13 09:53:25,409 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:53:25,410 INFO L124 PetriNetUnfolderBase]: 2/55 cut-off events. [2024-10-13 09:53:25,410 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:53:25,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:25,411 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:53:25,412 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:53:25,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:25,419 INFO L85 PathProgramCache]: Analyzing trace with hash -274697999, now seen corresponding path program 1 times [2024-10-13 09:53:25,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:25,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427110632] [2024-10-13 09:53:25,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:25,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:26,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:26,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427110632] [2024-10-13 09:53:26,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427110632] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:26,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:26,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:53:26,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076501571] [2024-10-13 09:53:26,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:26,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:53:26,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:26,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:53:26,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:53:26,618 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 181 [2024-10-13 09:53:26,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 181 transitions, 369 flow. Second operand has 6 states, 6 states have (on average 138.5) internal successors, (831), 6 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:53:26,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:26,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 181 [2024-10-13 09:53:26,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:26,847 INFO L124 PetriNetUnfolderBase]: 93/755 cut-off events. [2024-10-13 09:53:26,848 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 09:53:26,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 969 conditions, 755 events. 93/755 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4186 event pairs, 33 based on Foata normal form. 101/800 useless extension candidates. Maximal degree in co-relation 798. Up to 154 conditions per place. [2024-10-13 09:53:26,857 INFO L140 encePairwiseOnDemand]: 162/181 looper letters, 40 selfloop transitions, 5 changer transitions 0/181 dead transitions. [2024-10-13 09:53:26,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 181 transitions, 459 flow [2024-10-13 09:53:26,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:53:26,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:53:26,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 897 transitions. [2024-10-13 09:53:26,880 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8259668508287292 [2024-10-13 09:53:26,885 INFO L175 Difference]: Start difference. First operand has 168 places, 181 transitions, 369 flow. Second operand 6 states and 897 transitions. [2024-10-13 09:53:26,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 181 transitions, 459 flow [2024-10-13 09:53:26,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 181 transitions, 459 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:53:26,897 INFO L231 Difference]: Finished difference. Result has 170 places, 165 transitions, 347 flow [2024-10-13 09:53:26,899 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=347, PETRI_PLACES=170, PETRI_TRANSITIONS=165} [2024-10-13 09:53:26,904 INFO L277 CegarLoopForPetriNet]: 168 programPoint places, 2 predicate places. [2024-10-13 09:53:26,905 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 165 transitions, 347 flow [2024-10-13 09:53:26,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.5) internal successors, (831), 6 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:53:26,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:26,906 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] [2024-10-13 09:53:26,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 09:53:26,907 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:53:26,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:26,908 INFO L85 PathProgramCache]: Analyzing trace with hash -311166184, now seen corresponding path program 1 times [2024-10-13 09:53:26,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:26,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438757170] [2024-10-13 09:53:26,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:26,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:26,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:26,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:26,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438757170] [2024-10-13 09:53:26,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438757170] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:26,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:26,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:53:26,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253794936] [2024-10-13 09:53:26,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:26,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:53:26,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:26,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:53:26,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:53:27,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 181 [2024-10-13 09:53:27,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 165 transitions, 347 flow. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:53:27,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:27,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 181 [2024-10-13 09:53:27,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:27,161 INFO L124 PetriNetUnfolderBase]: 113/926 cut-off events. [2024-10-13 09:53:27,161 INFO L125 PetriNetUnfolderBase]: For 7/13 co-relation queries the response was YES. [2024-10-13 09:53:27,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1196 conditions, 926 events. 113/926 cut-off events. For 7/13 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4855 event pairs, 34 based on Foata normal form. 1/849 useless extension candidates. Maximal degree in co-relation 1029. Up to 137 conditions per place. [2024-10-13 09:53:27,168 INFO L140 encePairwiseOnDemand]: 172/181 looper letters, 30 selfloop transitions, 6 changer transitions 0/178 dead transitions. [2024-10-13 09:53:27,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 178 transitions, 448 flow [2024-10-13 09:53:27,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:53:27,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:53:27,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2024-10-13 09:53:27,171 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8674033149171271 [2024-10-13 09:53:27,171 INFO L175 Difference]: Start difference. First operand has 170 places, 165 transitions, 347 flow. Second operand 3 states and 471 transitions. [2024-10-13 09:53:27,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 178 transitions, 448 flow [2024-10-13 09:53:27,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 178 transitions, 438 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:53:27,176 INFO L231 Difference]: Finished difference. Result has 167 places, 167 transitions, 375 flow [2024-10-13 09:53:27,177 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=375, PETRI_PLACES=167, PETRI_TRANSITIONS=167} [2024-10-13 09:53:27,178 INFO L277 CegarLoopForPetriNet]: 168 programPoint places, -1 predicate places. [2024-10-13 09:53:27,178 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 167 transitions, 375 flow [2024-10-13 09:53:27,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:53:27,179 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:27,179 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] [2024-10-13 09:53:27,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 09:53:27,179 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:53:27,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:27,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2001203335, now seen corresponding path program 1 times [2024-10-13 09:53:27,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:27,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266292775] [2024-10-13 09:53:27,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:27,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:27,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:27,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:27,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266292775] [2024-10-13 09:53:27,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266292775] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:27,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:27,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:53:27,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292782813] [2024-10-13 09:53:27,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:27,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:53:27,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:27,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:53:27,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:53:27,292 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 181 [2024-10-13 09:53:27,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 167 transitions, 375 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:53:27,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:27,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 181 [2024-10-13 09:53:27,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:27,468 INFO L124 PetriNetUnfolderBase]: 82/908 cut-off events. [2024-10-13 09:53:27,469 INFO L125 PetriNetUnfolderBase]: For 32/34 co-relation queries the response was YES. [2024-10-13 09:53:27,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 908 events. 82/908 cut-off events. For 32/34 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4757 event pairs, 38 based on Foata normal form. 1/843 useless extension candidates. Maximal degree in co-relation 1041. Up to 146 conditions per place. [2024-10-13 09:53:27,478 INFO L140 encePairwiseOnDemand]: 178/181 looper letters, 20 selfloop transitions, 2 changer transitions 0/171 dead transitions. [2024-10-13 09:53:27,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 171 transitions, 427 flow [2024-10-13 09:53:27,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:53:27,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:53:27,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2024-10-13 09:53:27,481 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8655616942909761 [2024-10-13 09:53:27,481 INFO L175 Difference]: Start difference. First operand has 167 places, 167 transitions, 375 flow. Second operand 3 states and 470 transitions. [2024-10-13 09:53:27,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 171 transitions, 427 flow [2024-10-13 09:53:27,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 171 transitions, 415 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 09:53:27,487 INFO L231 Difference]: Finished difference. Result has 168 places, 167 transitions, 371 flow [2024-10-13 09:53:27,488 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=371, PETRI_PLACES=168, PETRI_TRANSITIONS=167} [2024-10-13 09:53:27,489 INFO L277 CegarLoopForPetriNet]: 168 programPoint places, 0 predicate places. [2024-10-13 09:53:27,490 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 167 transitions, 371 flow [2024-10-13 09:53:27,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:53:27,491 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:27,491 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] [2024-10-13 09:53:27,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 09:53:27,492 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:53:27,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:27,492 INFO L85 PathProgramCache]: Analyzing trace with hash -964947795, now seen corresponding path program 1 times [2024-10-13 09:53:27,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:27,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782295995] [2024-10-13 09:53:27,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:27,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:53:27,534 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:53:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:53:27,594 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:53:27,595 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:53:27,596 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-10-13 09:53:27,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2024-10-13 09:53:27,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2024-10-13 09:53:27,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2024-10-13 09:53:27,602 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2024-10-13 09:53:27,602 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2024-10-13 09:53:27,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2024-10-13 09:53:27,604 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2024-10-13 09:53:27,604 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2024-10-13 09:53:27,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 09:53:27,604 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-13 09:53:27,609 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:53:27,610 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-13 09:53:27,649 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 09:53:27,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 213 transitions, 442 flow [2024-10-13 09:53:27,708 INFO L124 PetriNetUnfolderBase]: 45/461 cut-off events. [2024-10-13 09:53:27,709 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 09:53:27,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 461 events. 45/461 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1835 event pairs, 0 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 293. Up to 9 conditions per place. [2024-10-13 09:53:27,713 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 213 transitions, 442 flow [2024-10-13 09:53:27,718 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 213 transitions, 442 flow [2024-10-13 09:53:27,720 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:53:27,725 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;@5205b91a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:53:27,725 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-13 09:53:27,735 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:53:27,735 INFO L124 PetriNetUnfolderBase]: 2/55 cut-off events. [2024-10-13 09:53:27,735 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:53:27,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:27,735 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:53:27,736 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-13 09:53:27,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:27,737 INFO L85 PathProgramCache]: Analyzing trace with hash 834523153, now seen corresponding path program 1 times [2024-10-13 09:53:27,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:27,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590445278] [2024-10-13 09:53:27,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:27,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:28,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:28,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:28,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590445278] [2024-10-13 09:53:28,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590445278] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:28,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:28,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:53:28,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347392727] [2024-10-13 09:53:28,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:28,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:53:28,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:28,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:53:28,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:53:28,216 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 213 [2024-10-13 09:53:28,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 213 transitions, 442 flow. Second operand has 6 states, 6 states have (on average 159.5) internal successors, (957), 6 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:53:28,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:28,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 213 [2024-10-13 09:53:28,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:28,875 INFO L124 PetriNetUnfolderBase]: 1001/4600 cut-off events. [2024-10-13 09:53:28,876 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-10-13 09:53:28,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6259 conditions, 4600 events. 1001/4600 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 43093 event pairs, 108 based on Foata normal form. 915/5182 useless extension candidates. Maximal degree in co-relation 1068. Up to 1202 conditions per place. [2024-10-13 09:53:28,912 INFO L140 encePairwiseOnDemand]: 190/213 looper letters, 62 selfloop transitions, 5 changer transitions 0/223 dead transitions. [2024-10-13 09:53:28,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 223 transitions, 596 flow [2024-10-13 09:53:28,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:53:28,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:53:28,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1065 transitions. [2024-10-13 09:53:28,916 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2024-10-13 09:53:28,916 INFO L175 Difference]: Start difference. First operand has 197 places, 213 transitions, 442 flow. Second operand 6 states and 1065 transitions. [2024-10-13 09:53:28,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 223 transitions, 596 flow [2024-10-13 09:53:28,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 223 transitions, 596 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:53:28,923 INFO L231 Difference]: Finished difference. Result has 197 places, 191 transitions, 408 flow [2024-10-13 09:53:28,924 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=408, PETRI_PLACES=197, PETRI_TRANSITIONS=191} [2024-10-13 09:53:28,925 INFO L277 CegarLoopForPetriNet]: 197 programPoint places, 0 predicate places. [2024-10-13 09:53:28,925 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 191 transitions, 408 flow [2024-10-13 09:53:28,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.5) internal successors, (957), 6 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:53:28,926 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:28,926 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] [2024-10-13 09:53:28,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 09:53:28,926 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-13 09:53:28,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:28,926 INFO L85 PathProgramCache]: Analyzing trace with hash -969738534, now seen corresponding path program 1 times [2024-10-13 09:53:28,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:28,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447395162] [2024-10-13 09:53:28,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:28,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:28,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:28,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:28,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447395162] [2024-10-13 09:53:28,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447395162] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:28,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:28,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:53:28,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479852589] [2024-10-13 09:53:28,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:28,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:53:28,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:28,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:53:28,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:53:29,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 213 [2024-10-13 09:53:29,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 191 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:53:29,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:29,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 213 [2024-10-13 09:53:29,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:30,209 INFO L124 PetriNetUnfolderBase]: 2104/8794 cut-off events. [2024-10-13 09:53:30,209 INFO L125 PetriNetUnfolderBase]: For 261/449 co-relation queries the response was YES. [2024-10-13 09:53:30,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12323 conditions, 8794 events. 2104/8794 cut-off events. For 261/449 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 87246 event pairs, 758 based on Foata normal form. 7/7967 useless extension candidates. Maximal degree in co-relation 10535. Up to 2127 conditions per place. [2024-10-13 09:53:30,284 INFO L140 encePairwiseOnDemand]: 201/213 looper letters, 45 selfloop transitions, 8 changer transitions 0/212 dead transitions. [2024-10-13 09:53:30,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 212 transitions, 567 flow [2024-10-13 09:53:30,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:53:30,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:53:30,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 543 transitions. [2024-10-13 09:53:30,287 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8497652582159625 [2024-10-13 09:53:30,287 INFO L175 Difference]: Start difference. First operand has 197 places, 191 transitions, 408 flow. Second operand 3 states and 543 transitions. [2024-10-13 09:53:30,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 212 transitions, 567 flow [2024-10-13 09:53:30,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 212 transitions, 557 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:53:30,293 INFO L231 Difference]: Finished difference. Result has 194 places, 195 transitions, 454 flow [2024-10-13 09:53:30,294 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=194, PETRI_TRANSITIONS=195} [2024-10-13 09:53:30,296 INFO L277 CegarLoopForPetriNet]: 197 programPoint places, -3 predicate places. [2024-10-13 09:53:30,296 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 195 transitions, 454 flow [2024-10-13 09:53:30,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:53:30,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:30,298 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] [2024-10-13 09:53:30,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 09:53:30,299 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-13 09:53:30,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:30,300 INFO L85 PathProgramCache]: Analyzing trace with hash 597928487, now seen corresponding path program 1 times [2024-10-13 09:53:30,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:30,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071738158] [2024-10-13 09:53:30,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:30,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:30,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:30,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:30,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071738158] [2024-10-13 09:53:30,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071738158] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:30,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:30,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:53:30,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718977221] [2024-10-13 09:53:30,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:30,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:53:30,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:30,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:53:30,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:53:30,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 213 [2024-10-13 09:53:30,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 195 transitions, 454 flow. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:53:30,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:30,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 213 [2024-10-13 09:53:30,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:31,445 INFO L124 PetriNetUnfolderBase]: 1362/7534 cut-off events. [2024-10-13 09:53:31,445 INFO L125 PetriNetUnfolderBase]: For 419/500 co-relation queries the response was YES. [2024-10-13 09:53:31,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10348 conditions, 7534 events. 1362/7534 cut-off events. For 419/500 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 76545 event pairs, 874 based on Foata normal form. 1/6886 useless extension candidates. Maximal degree in co-relation 6779. Up to 1911 conditions per place. [2024-10-13 09:53:31,513 INFO L140 encePairwiseOnDemand]: 210/213 looper letters, 27 selfloop transitions, 2 changer transitions 0/200 dead transitions. [2024-10-13 09:53:31,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 200 transitions, 522 flow [2024-10-13 09:53:31,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:53:31,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:53:31,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 540 transitions. [2024-10-13 09:53:31,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8450704225352113 [2024-10-13 09:53:31,516 INFO L175 Difference]: Start difference. First operand has 194 places, 195 transitions, 454 flow. Second operand 3 states and 540 transitions. [2024-10-13 09:53:31,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 200 transitions, 522 flow [2024-10-13 09:53:31,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 200 transitions, 506 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 09:53:31,525 INFO L231 Difference]: Finished difference. Result has 195 places, 196 transitions, 450 flow [2024-10-13 09:53:31,525 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=450, PETRI_PLACES=195, PETRI_TRANSITIONS=196} [2024-10-13 09:53:31,528 INFO L277 CegarLoopForPetriNet]: 197 programPoint places, -2 predicate places. [2024-10-13 09:53:31,528 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 196 transitions, 450 flow [2024-10-13 09:53:31,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:53:31,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:31,529 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] [2024-10-13 09:53:31,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 09:53:31,530 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-13 09:53:31,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:31,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1915331391, now seen corresponding path program 1 times [2024-10-13 09:53:31,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:31,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384545935] [2024-10-13 09:53:31,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:31,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:31,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:31,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:31,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384545935] [2024-10-13 09:53:31,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384545935] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:53:31,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549598096] [2024-10-13 09:53:31,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:31,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:53:31,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:53:31,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:53:31,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 09:53:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:31,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 09:53:31,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:53:31,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:53:31,756 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:53:31,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549598096] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:31,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:53:31,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-13 09:53:31,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220796365] [2024-10-13 09:53:31,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:31,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:53:31,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:31,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:53:31,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:53:31,767 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 213 [2024-10-13 09:53:31,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 196 transitions, 450 flow. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:53:31,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:31,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 213 [2024-10-13 09:53:31,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:33,618 INFO L124 PetriNetUnfolderBase]: 2343/13191 cut-off events. [2024-10-13 09:53:33,619 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-10-13 09:53:33,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17693 conditions, 13191 events. 2343/13191 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 154880 event pairs, 1363 based on Foata normal form. 36/12104 useless extension candidates. Maximal degree in co-relation 17635. Up to 2189 conditions per place. [2024-10-13 09:53:33,717 INFO L140 encePairwiseOnDemand]: 210/213 looper letters, 37 selfloop transitions, 2 changer transitions 0/211 dead transitions. [2024-10-13 09:53:33,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 211 transitions, 558 flow [2024-10-13 09:53:33,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:53:33,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:53:33,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 550 transitions. [2024-10-13 09:53:33,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8607198748043818 [2024-10-13 09:53:33,721 INFO L175 Difference]: Start difference. First operand has 195 places, 196 transitions, 450 flow. Second operand 3 states and 550 transitions. [2024-10-13 09:53:33,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 211 transitions, 558 flow [2024-10-13 09:53:33,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 211 transitions, 556 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:53:33,727 INFO L231 Difference]: Finished difference. Result has 197 places, 197 transitions, 460 flow [2024-10-13 09:53:33,728 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=460, PETRI_PLACES=197, PETRI_TRANSITIONS=197} [2024-10-13 09:53:33,729 INFO L277 CegarLoopForPetriNet]: 197 programPoint places, 0 predicate places. [2024-10-13 09:53:33,729 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 197 transitions, 460 flow [2024-10-13 09:53:33,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:53:33,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:33,730 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] [2024-10-13 09:53:33,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 09:53:33,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:53:33,936 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-13 09:53:33,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:33,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1193848283, now seen corresponding path program 1 times [2024-10-13 09:53:33,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:33,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339926783] [2024-10-13 09:53:33,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:33,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:53:33,969 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:53:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:53:33,998 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:53:33,999 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:53:33,999 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-10-13 09:53:34,000 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-10-13 09:53:34,000 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-10-13 09:53:34,000 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-10-13 09:53:34,000 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-10-13 09:53:34,001 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-10-13 09:53:34,001 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-10-13 09:53:34,001 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-10-13 09:53:34,002 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-10-13 09:53:34,002 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-10-13 09:53:34,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 09:53:34,002 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-13 09:53:34,003 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:53:34,003 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-13 09:53:34,033 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 09:53:34,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 245 transitions, 517 flow [2024-10-13 09:53:34,104 INFO L124 PetriNetUnfolderBase]: 68/676 cut-off events. [2024-10-13 09:53:34,104 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-13 09:53:34,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 701 conditions, 676 events. 68/676 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2933 event pairs, 1 based on Foata normal form. 0/573 useless extension candidates. Maximal degree in co-relation 469. Up to 16 conditions per place. [2024-10-13 09:53:34,111 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 245 transitions, 517 flow [2024-10-13 09:53:34,115 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 245 transitions, 517 flow [2024-10-13 09:53:34,117 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:53:34,118 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;@5205b91a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:53:34,119 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-10-13 09:53:34,127 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:53:34,127 INFO L124 PetriNetUnfolderBase]: 2/55 cut-off events. [2024-10-13 09:53:34,127 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:53:34,127 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:34,129 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:53:34,129 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-13 09:53:34,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:34,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1398176975, now seen corresponding path program 1 times [2024-10-13 09:53:34,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:34,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775150441] [2024-10-13 09:53:34,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:34,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:34,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:34,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:34,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775150441] [2024-10-13 09:53:34,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775150441] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:34,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:34,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:53:34,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512659322] [2024-10-13 09:53:34,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:34,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:53:34,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:34,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:53:34,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:53:34,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 245 [2024-10-13 09:53:34,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 245 transitions, 517 flow. Second operand has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:53:34,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:34,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 245 [2024-10-13 09:53:34,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:37,810 INFO L124 PetriNetUnfolderBase]: 8120/26912 cut-off events. [2024-10-13 09:53:37,810 INFO L125 PetriNetUnfolderBase]: For 557/557 co-relation queries the response was YES. [2024-10-13 09:53:37,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38647 conditions, 26912 events. 8120/26912 cut-off events. For 557/557 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 324086 event pairs, 1746 based on Foata normal form. 6819/31993 useless extension candidates. Maximal degree in co-relation 6247. Up to 8631 conditions per place. [2024-10-13 09:53:38,002 INFO L140 encePairwiseOnDemand]: 218/245 looper letters, 84 selfloop transitions, 5 changer transitions 0/265 dead transitions. [2024-10-13 09:53:38,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 265 transitions, 735 flow [2024-10-13 09:53:38,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:53:38,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:53:38,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1233 transitions. [2024-10-13 09:53:38,007 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8387755102040816 [2024-10-13 09:53:38,007 INFO L175 Difference]: Start difference. First operand has 226 places, 245 transitions, 517 flow. Second operand 6 states and 1233 transitions. [2024-10-13 09:53:38,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 265 transitions, 735 flow [2024-10-13 09:53:38,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 265 transitions, 735 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:53:38,014 INFO L231 Difference]: Finished difference. Result has 224 places, 217 transitions, 471 flow [2024-10-13 09:53:38,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=471, PETRI_PLACES=224, PETRI_TRANSITIONS=217} [2024-10-13 09:53:38,016 INFO L277 CegarLoopForPetriNet]: 226 programPoint places, -2 predicate places. [2024-10-13 09:53:38,017 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 217 transitions, 471 flow [2024-10-13 09:53:38,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:53:38,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:38,018 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] [2024-10-13 09:53:38,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 09:53:38,019 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-13 09:53:38,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:38,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1061728344, now seen corresponding path program 1 times [2024-10-13 09:53:38,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:38,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882907445] [2024-10-13 09:53:38,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:38,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:38,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:38,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:38,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882907445] [2024-10-13 09:53:38,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882907445] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:38,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:38,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:53:38,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490329674] [2024-10-13 09:53:38,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:38,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:53:38,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:38,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:53:38,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:53:38,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 245 [2024-10-13 09:53:38,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 217 transitions, 471 flow. Second operand has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:53:38,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:38,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 245 [2024-10-13 09:53:38,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:47,636 INFO L124 PetriNetUnfolderBase]: 27267/82221 cut-off events. [2024-10-13 09:53:47,636 INFO L125 PetriNetUnfolderBase]: For 2339/4240 co-relation queries the response was YES. [2024-10-13 09:53:48,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121859 conditions, 82221 events. 27267/82221 cut-off events. For 2339/4240 co-relation queries the response was YES. Maximal size of possible extension queue 1773. Compared 1093440 event pairs, 10774 based on Foata normal form. 32/74548 useless extension candidates. Maximal degree in co-relation 109328. Up to 25188 conditions per place. [2024-10-13 09:53:48,436 INFO L140 encePairwiseOnDemand]: 230/245 looper letters, 60 selfloop transitions, 10 changer transitions 0/246 dead transitions. [2024-10-13 09:53:48,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 246 transitions, 690 flow [2024-10-13 09:53:48,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:53:48,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:53:48,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 615 transitions. [2024-10-13 09:53:48,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8367346938775511 [2024-10-13 09:53:48,439 INFO L175 Difference]: Start difference. First operand has 224 places, 217 transitions, 471 flow. Second operand 3 states and 615 transitions. [2024-10-13 09:53:48,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 246 transitions, 690 flow [2024-10-13 09:53:48,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 246 transitions, 680 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:53:48,454 INFO L231 Difference]: Finished difference. Result has 221 places, 223 transitions, 535 flow [2024-10-13 09:53:48,455 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=535, PETRI_PLACES=221, PETRI_TRANSITIONS=223} [2024-10-13 09:53:48,456 INFO L277 CegarLoopForPetriNet]: 226 programPoint places, -5 predicate places. [2024-10-13 09:53:48,457 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 223 transitions, 535 flow [2024-10-13 09:53:48,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:53:48,457 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:48,458 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] [2024-10-13 09:53:48,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 09:53:48,459 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-13 09:53:48,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:48,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1600927801, now seen corresponding path program 1 times [2024-10-13 09:53:48,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:48,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881263509] [2024-10-13 09:53:48,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:48,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:48,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:48,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:48,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881263509] [2024-10-13 09:53:48,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881263509] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:48,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:48,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:53:48,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868299447] [2024-10-13 09:53:48,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:48,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:53:48,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:48,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:53:48,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:53:48,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 245 [2024-10-13 09:53:48,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 223 transitions, 535 flow. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:53:48,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:48,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 245 [2024-10-13 09:53:48,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:56,644 INFO L124 PetriNetUnfolderBase]: 16710/68707 cut-off events. [2024-10-13 09:53:56,644 INFO L125 PetriNetUnfolderBase]: For 4051/5311 co-relation queries the response was YES. [2024-10-13 09:53:56,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98145 conditions, 68707 events. 16710/68707 cut-off events. For 4051/5311 co-relation queries the response was YES. Maximal size of possible extension queue 1361. Compared 986987 event pairs, 11681 based on Foata normal form. 1/62403 useless extension candidates. Maximal degree in co-relation 64880. Up to 20086 conditions per place. [2024-10-13 09:53:57,205 INFO L140 encePairwiseOnDemand]: 242/245 looper letters, 33 selfloop transitions, 2 changer transitions 0/228 dead transitions. [2024-10-13 09:53:57,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 228 transitions, 615 flow [2024-10-13 09:53:57,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:53:57,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:53:57,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 609 transitions. [2024-10-13 09:53:57,208 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8285714285714286 [2024-10-13 09:53:57,208 INFO L175 Difference]: Start difference. First operand has 221 places, 223 transitions, 535 flow. Second operand 3 states and 609 transitions. [2024-10-13 09:53:57,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 228 transitions, 615 flow [2024-10-13 09:53:57,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 228 transitions, 595 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 09:53:57,222 INFO L231 Difference]: Finished difference. Result has 222 places, 224 transitions, 527 flow [2024-10-13 09:53:57,222 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=527, PETRI_PLACES=222, PETRI_TRANSITIONS=224} [2024-10-13 09:53:57,223 INFO L277 CegarLoopForPetriNet]: 226 programPoint places, -4 predicate places. [2024-10-13 09:53:57,223 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 224 transitions, 527 flow [2024-10-13 09:53:57,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:53:57,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:57,224 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] [2024-10-13 09:53:57,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 09:53:57,224 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-13 09:53:57,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:57,225 INFO L85 PathProgramCache]: Analyzing trace with hash 566792035, now seen corresponding path program 1 times [2024-10-13 09:53:57,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:57,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740989471] [2024-10-13 09:53:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:57,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:57,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:57,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:57,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740989471] [2024-10-13 09:53:57,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740989471] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:53:57,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246973410] [2024-10-13 09:53:57,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:57,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:53:57,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:53:57,596 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:53:57,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 09:53:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:57,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 09:53:57,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:53:57,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:53:57,726 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:53:57,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246973410] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:57,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:53:57,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-13 09:53:57,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068687337] [2024-10-13 09:53:57,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:57,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:53:57,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:57,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:53:57,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:53:57,739 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 245 [2024-10-13 09:53:57,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 224 transitions, 527 flow. Second operand has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:53:57,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:57,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 245 [2024-10-13 09:53:57,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:11,105 INFO L124 PetriNetUnfolderBase]: 28232/111669 cut-off events. [2024-10-13 09:54:11,106 INFO L125 PetriNetUnfolderBase]: For 1400/1400 co-relation queries the response was YES. [2024-10-13 09:54:11,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157869 conditions, 111669 events. 28232/111669 cut-off events. For 1400/1400 co-relation queries the response was YES. Maximal size of possible extension queue 2383. Compared 1723443 event pairs, 17335 based on Foata normal form. 247/102323 useless extension candidates. Maximal degree in co-relation 157810. Up to 22843 conditions per place. [2024-10-13 09:54:12,212 INFO L140 encePairwiseOnDemand]: 242/245 looper letters, 47 selfloop transitions, 2 changer transitions 0/243 dead transitions. [2024-10-13 09:54:12,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 243 transitions, 663 flow [2024-10-13 09:54:12,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:12,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:12,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 623 transitions. [2024-10-13 09:54:12,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8476190476190476 [2024-10-13 09:54:12,215 INFO L175 Difference]: Start difference. First operand has 222 places, 224 transitions, 527 flow. Second operand 3 states and 623 transitions. [2024-10-13 09:54:12,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 243 transitions, 663 flow [2024-10-13 09:54:12,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 243 transitions, 661 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:54:12,226 INFO L231 Difference]: Finished difference. Result has 224 places, 225 transitions, 537 flow [2024-10-13 09:54:12,227 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=537, PETRI_PLACES=224, PETRI_TRANSITIONS=225} [2024-10-13 09:54:12,227 INFO L277 CegarLoopForPetriNet]: 226 programPoint places, -2 predicate places. [2024-10-13 09:54:12,228 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 225 transitions, 537 flow [2024-10-13 09:54:12,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:12,228 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:12,228 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] [2024-10-13 09:54:12,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 09:54:12,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-13 09:54:12,433 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-13 09:54:12,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:12,433 INFO L85 PathProgramCache]: Analyzing trace with hash 827485695, now seen corresponding path program 1 times [2024-10-13 09:54:12,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:12,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273783806] [2024-10-13 09:54:12,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:12,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:12,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:54:12,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:12,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273783806] [2024-10-13 09:54:12,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273783806] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:54:12,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322441214] [2024-10-13 09:54:12,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:12,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:54:12,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:54:12,544 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:54:12,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 09:54:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:12,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 09:54:12,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:54:12,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:54:12,723 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:54:12,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:54:12,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322441214] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:54:12,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:54:12,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 09:54:12,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86302965] [2024-10-13 09:54:12,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:54:12,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:54:12,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:12,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:54:12,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 09:54:12,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 245 [2024-10-13 09:54:12,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 225 transitions, 537 flow. Second operand has 10 states, 10 states have (on average 190.1) internal successors, (1901), 10 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:12,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:12,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 245 [2024-10-13 09:54:12,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand