./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/29_conditionals_vs.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 c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 15:06:41,425 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 15:06:41,480 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-24 15:06:41,483 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 15:06:41,484 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 15:06:41,508 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 15:06:41,509 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 15:06:41,509 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 15:06:41,509 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 15:06:41,509 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 15:06:41,510 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 15:06:41,510 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 15:06:41,512 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 15:06:41,513 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 15:06:41,513 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 15:06:41,513 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 15:06:41,514 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 15:06:41,514 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 15:06:41,514 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 15:06:41,514 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 15:06:41,514 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 15:06:41,518 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 15:06:41,519 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-24 15:06:41,519 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 15:06:41,519 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 15:06:41,519 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 15:06:41,519 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 15:06:41,519 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 15:06:41,520 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 15:06:41,520 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 15:06:41,520 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 15:06:41,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 15:06:41,520 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 15:06:41,521 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 15:06:41,521 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 15:06:41,521 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 15:06:41,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 15:06:41,521 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 15:06:41,521 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 15:06:41,522 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 15:06:41,522 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 15:06:41,524 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 [2024-10-24 15:06:41,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 15:06:41,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 15:06:41,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 15:06:41,750 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 15:06:41,750 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 15:06:41,751 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2024-10-24 15:06:42,941 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 15:06:43,118 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 15:06:43,118 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2024-10-24 15:06:43,129 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/759ed7aed/39aef824ed8047c3af13cd8ba4889f5a/FLAGb021f1fc6 [2024-10-24 15:06:43,141 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/759ed7aed/39aef824ed8047c3af13cd8ba4889f5a [2024-10-24 15:06:43,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 15:06:43,144 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 15:06:43,145 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 15:06:43,145 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 15:06:43,149 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 15:06:43,150 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:06:43" (1/1) ... [2024-10-24 15:06:43,150 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e0fb2f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:43, skipping insertion in model container [2024-10-24 15:06:43,150 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:06:43" (1/1) ... [2024-10-24 15:06:43,182 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 15:06:43,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 15:06:43,471 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 15:06:43,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 15:06:43,546 INFO L204 MainTranslator]: Completed translation [2024-10-24 15:06:43,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:43 WrapperNode [2024-10-24 15:06:43,546 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 15:06:43,547 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 15:06:43,547 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 15:06:43,548 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 15:06:43,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:43" (1/1) ... [2024-10-24 15:06:43,563 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:43" (1/1) ... [2024-10-24 15:06:43,581 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 72 [2024-10-24 15:06:43,582 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 15:06:43,583 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 15:06:43,583 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 15:06:43,583 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 15:06:43,589 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:43" (1/1) ... [2024-10-24 15:06:43,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:43" (1/1) ... [2024-10-24 15:06:43,590 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:43" (1/1) ... [2024-10-24 15:06:43,592 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:43" (1/1) ... [2024-10-24 15:06:43,595 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:43" (1/1) ... [2024-10-24 15:06:43,601 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:43" (1/1) ... [2024-10-24 15:06:43,602 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:43" (1/1) ... [2024-10-24 15:06:43,604 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:43" (1/1) ... [2024-10-24 15:06:43,605 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 15:06:43,607 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 15:06:43,608 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 15:06:43,609 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 15:06:43,609 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:43" (1/1) ... [2024-10-24 15:06:43,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 15:06:43,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:06:43,636 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) [2024-10-24 15:06:43,638 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 [2024-10-24 15:06:43,672 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-24 15:06:43,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-24 15:06:43,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 15:06:43,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-24 15:06:43,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 15:06:43,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 15:06:43,674 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 15:06:43,759 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 15:06:43,760 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 15:06:43,859 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 15:06:43,859 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 15:06:43,913 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 15:06:43,913 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 15:06:43,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:43 BoogieIcfgContainer [2024-10-24 15:06:43,915 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 15:06:43,917 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 15:06:43,917 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 15:06:43,919 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 15:06:43,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:06:43" (1/3) ... [2024-10-24 15:06:43,920 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7192cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:06:43, skipping insertion in model container [2024-10-24 15:06:43,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:43" (2/3) ... [2024-10-24 15:06:43,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7192cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:06:43, skipping insertion in model container [2024-10-24 15:06:43,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:43" (3/3) ... [2024-10-24 15:06:43,922 INFO L112 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2024-10-24 15:06:43,934 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 15:06:43,934 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-24 15:06:43,934 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 15:06:43,968 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:06:43,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 59 transitions, 122 flow [2024-10-24 15:06:44,015 INFO L124 PetriNetUnfolderBase]: 7/68 cut-off events. [2024-10-24 15:06:44,016 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:06:44,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 68 events. 7/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 47. Up to 4 conditions per place. [2024-10-24 15:06:44,019 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 59 transitions, 122 flow [2024-10-24 15:06:44,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 59 transitions, 122 flow [2024-10-24 15:06:44,027 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:06:44,032 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;@508d089a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:06:44,032 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-24 15:06:44,039 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:06:44,039 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2024-10-24 15:06:44,039 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:06:44,039 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:06:44,040 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:06:44,040 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-24 15:06:44,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:06:44,046 INFO L85 PathProgramCache]: Analyzing trace with hash 237592934, now seen corresponding path program 1 times [2024-10-24 15:06:44,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:06:44,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854225945] [2024-10-24 15:06:44,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:06:44,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:06:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:06:44,128 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:06:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:06:44,157 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:06:44,158 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:06:44,159 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-10-24 15:06:44,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2024-10-24 15:06:44,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2024-10-24 15:06:44,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2024-10-24 15:06:44,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2024-10-24 15:06:44,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2024-10-24 15:06:44,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2024-10-24 15:06:44,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2024-10-24 15:06:44,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2024-10-24 15:06:44,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 15:06:44,161 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-24 15:06:44,164 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:06:44,164 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-24 15:06:44,181 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:06:44,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 96 transitions, 202 flow [2024-10-24 15:06:44,208 INFO L124 PetriNetUnfolderBase]: 13/116 cut-off events. [2024-10-24 15:06:44,208 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 15:06:44,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 116 events. 13/116 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 217 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 83. Up to 6 conditions per place. [2024-10-24 15:06:44,209 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 96 transitions, 202 flow [2024-10-24 15:06:44,212 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 96 transitions, 202 flow [2024-10-24 15:06:44,213 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:06:44,214 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;@508d089a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:06:44,214 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-24 15:06:44,223 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:06:44,223 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-10-24 15:06:44,223 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 15:06:44,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:06:44,224 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] [2024-10-24 15:06:44,224 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-24 15:06:44,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:06:44,224 INFO L85 PathProgramCache]: Analyzing trace with hash -198220020, now seen corresponding path program 1 times [2024-10-24 15:06:44,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:06:44,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095207919] [2024-10-24 15:06:44,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:06:44,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:06:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:06:44,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:06:44,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:06:44,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095207919] [2024-10-24 15:06:44,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095207919] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:06:44,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:06:44,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 15:06:44,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516358052] [2024-10-24 15:06:44,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:06:44,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 15:06:44,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:06:44,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 15:06:44,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 15:06:44,394 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 96 [2024-10-24 15:06:44,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 96 transitions, 202 flow. Second operand has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 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) [2024-10-24 15:06:44,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:06:44,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 96 [2024-10-24 15:06:44,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:06:44,441 INFO L124 PetriNetUnfolderBase]: 18/163 cut-off events. [2024-10-24 15:06:44,442 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-10-24 15:06:44,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 163 events. 18/163 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 438 event pairs, 6 based on Foata normal form. 27/173 useless extension candidates. Maximal degree in co-relation 54. Up to 19 conditions per place. [2024-10-24 15:06:44,446 INFO L140 encePairwiseOnDemand]: 82/96 looper letters, 6 selfloop transitions, 0 changer transitions 0/75 dead transitions. [2024-10-24 15:06:44,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 75 transitions, 172 flow [2024-10-24 15:06:44,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 15:06:44,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-24 15:06:44,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 168 transitions. [2024-10-24 15:06:44,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.875 [2024-10-24 15:06:44,458 INFO L175 Difference]: Start difference. First operand has 90 places, 96 transitions, 202 flow. Second operand 2 states and 168 transitions. [2024-10-24 15:06:44,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 75 transitions, 172 flow [2024-10-24 15:06:44,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 75 transitions, 172 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 15:06:44,463 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 160 flow [2024-10-24 15:06:44,465 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=160, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2024-10-24 15:06:44,468 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, -15 predicate places. [2024-10-24 15:06:44,469 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 160 flow [2024-10-24 15:06:44,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 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) [2024-10-24 15:06:44,470 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:06:44,470 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:06:44,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 15:06:44,470 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-24 15:06:44,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:06:44,471 INFO L85 PathProgramCache]: Analyzing trace with hash -821886563, now seen corresponding path program 1 times [2024-10-24 15:06:44,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:06:44,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997539725] [2024-10-24 15:06:44,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:06:44,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:06:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:06:44,495 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:06:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:06:44,512 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:06:44,512 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:06:44,512 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-10-24 15:06:44,513 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2024-10-24 15:06:44,513 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2024-10-24 15:06:44,513 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2024-10-24 15:06:44,513 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2024-10-24 15:06:44,513 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2024-10-24 15:06:44,513 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2024-10-24 15:06:44,513 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2024-10-24 15:06:44,513 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2024-10-24 15:06:44,513 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2024-10-24 15:06:44,514 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2024-10-24 15:06:44,514 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2024-10-24 15:06:44,514 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2024-10-24 15:06:44,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 15:06:44,514 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-24 15:06:44,514 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:06:44,514 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-24 15:06:44,547 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:06:44,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 133 transitions, 284 flow [2024-10-24 15:06:44,571 INFO L124 PetriNetUnfolderBase]: 19/164 cut-off events. [2024-10-24 15:06:44,572 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-24 15:06:44,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 164 events. 19/164 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 407 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 120. Up to 8 conditions per place. [2024-10-24 15:06:44,574 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 133 transitions, 284 flow [2024-10-24 15:06:44,575 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 133 transitions, 284 flow [2024-10-24 15:06:44,577 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:06:44,578 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;@508d089a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:06:44,578 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-24 15:06:44,584 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:06:44,584 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-10-24 15:06:44,585 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-24 15:06:44,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:06:44,585 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] [2024-10-24 15:06:44,585 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-24 15:06:44,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:06:44,585 INFO L85 PathProgramCache]: Analyzing trace with hash 708964904, now seen corresponding path program 1 times [2024-10-24 15:06:44,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:06:44,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892221151] [2024-10-24 15:06:44,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:06:44,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:06:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:06:44,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:06:44,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:06:44,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892221151] [2024-10-24 15:06:44,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892221151] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:06:44,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:06:44,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 15:06:44,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843196483] [2024-10-24 15:06:44,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:06:44,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 15:06:44,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:06:44,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 15:06:44,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 15:06:44,618 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 133 [2024-10-24 15:06:44,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 133 transitions, 284 flow. Second operand has 2 states, 2 states have (on average 102.0) internal successors, (204), 2 states have internal predecessors, (204), 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) [2024-10-24 15:06:44,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:06:44,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 133 [2024-10-24 15:06:44,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:06:44,694 INFO L124 PetriNetUnfolderBase]: 81/520 cut-off events. [2024-10-24 15:06:44,695 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-10-24 15:06:44,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 653 conditions, 520 events. 81/520 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2708 event pairs, 42 based on Foata normal form. 108/572 useless extension candidates. Maximal degree in co-relation 189. Up to 82 conditions per place. [2024-10-24 15:06:44,700 INFO L140 encePairwiseOnDemand]: 113/133 looper letters, 9 selfloop transitions, 0 changer transitions 0/104 dead transitions. [2024-10-24 15:06:44,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 104 transitions, 244 flow [2024-10-24 15:06:44,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 15:06:44,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-24 15:06:44,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 231 transitions. [2024-10-24 15:06:44,705 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.868421052631579 [2024-10-24 15:06:44,705 INFO L175 Difference]: Start difference. First operand has 124 places, 133 transitions, 284 flow. Second operand 2 states and 231 transitions. [2024-10-24 15:06:44,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 104 transitions, 244 flow [2024-10-24 15:06:44,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 104 transitions, 242 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-24 15:06:44,708 INFO L231 Difference]: Finished difference. Result has 103 places, 104 transitions, 224 flow [2024-10-24 15:06:44,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=224, PETRI_PLACES=103, PETRI_TRANSITIONS=104} [2024-10-24 15:06:44,710 INFO L277 CegarLoopForPetriNet]: 124 programPoint places, -21 predicate places. [2024-10-24 15:06:44,710 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 104 transitions, 224 flow [2024-10-24 15:06:44,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 102.0) internal successors, (204), 2 states have internal predecessors, (204), 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) [2024-10-24 15:06:44,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:06:44,711 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:06:44,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 15:06:44,711 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-24 15:06:44,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:06:44,711 INFO L85 PathProgramCache]: Analyzing trace with hash -968667, now seen corresponding path program 1 times [2024-10-24 15:06:44,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:06:44,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120128787] [2024-10-24 15:06:44,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:06:44,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:06:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:06:44,735 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:06:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:06:44,754 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:06:44,755 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:06:44,755 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-10-24 15:06:44,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2024-10-24 15:06:44,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2024-10-24 15:06:44,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2024-10-24 15:06:44,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2024-10-24 15:06:44,756 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2024-10-24 15:06:44,756 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2024-10-24 15:06:44,756 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2024-10-24 15:06:44,756 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2024-10-24 15:06:44,756 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2024-10-24 15:06:44,756 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2024-10-24 15:06:44,756 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2024-10-24 15:06:44,756 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2024-10-24 15:06:44,757 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2024-10-24 15:06:44,757 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2024-10-24 15:06:44,757 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2024-10-24 15:06:44,757 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2024-10-24 15:06:44,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 15:06:44,757 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-24 15:06:44,758 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:06:44,758 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-24 15:06:44,815 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:06:44,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 170 transitions, 368 flow [2024-10-24 15:06:44,844 INFO L124 PetriNetUnfolderBase]: 25/212 cut-off events. [2024-10-24 15:06:44,845 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-24 15:06:44,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 212 events. 25/212 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 598 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 172. Up to 10 conditions per place. [2024-10-24 15:06:44,846 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 170 transitions, 368 flow [2024-10-24 15:06:44,850 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 170 transitions, 368 flow [2024-10-24 15:06:44,851 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:06:44,852 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;@508d089a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:06:44,855 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-24 15:06:44,860 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:06:44,860 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-10-24 15:06:44,860 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-24 15:06:44,861 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:06:44,861 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] [2024-10-24 15:06:44,861 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-24 15:06:44,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:06:44,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1858000088, now seen corresponding path program 1 times [2024-10-24 15:06:44,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:06:44,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468041248] [2024-10-24 15:06:44,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:06:44,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:06:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:06:44,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:06:44,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:06:44,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468041248] [2024-10-24 15:06:44,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468041248] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:06:44,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:06:44,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 15:06:44,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166252110] [2024-10-24 15:06:44,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:06:44,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 15:06:44,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:06:44,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 15:06:44,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 15:06:44,906 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 170 [2024-10-24 15:06:44,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 170 transitions, 368 flow. Second operand has 2 states, 2 states have (on average 129.0) internal successors, (258), 2 states have internal predecessors, (258), 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) [2024-10-24 15:06:44,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:06:44,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 170 [2024-10-24 15:06:44,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:06:45,113 INFO L124 PetriNetUnfolderBase]: 324/1645 cut-off events. [2024-10-24 15:06:45,116 INFO L125 PetriNetUnfolderBase]: For 496/496 co-relation queries the response was YES. [2024-10-24 15:06:45,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2157 conditions, 1645 events. 324/1645 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 12428 event pairs, 204 based on Foata normal form. 405/1877 useless extension candidates. Maximal degree in co-relation 653. Up to 325 conditions per place. [2024-10-24 15:06:45,128 INFO L140 encePairwiseOnDemand]: 144/170 looper letters, 12 selfloop transitions, 0 changer transitions 0/133 dead transitions. [2024-10-24 15:06:45,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 133 transitions, 318 flow [2024-10-24 15:06:45,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 15:06:45,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-24 15:06:45,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 294 transitions. [2024-10-24 15:06:45,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8647058823529412 [2024-10-24 15:06:45,130 INFO L175 Difference]: Start difference. First operand has 158 places, 170 transitions, 368 flow. Second operand 2 states and 294 transitions. [2024-10-24 15:06:45,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 133 transitions, 318 flow [2024-10-24 15:06:45,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 133 transitions, 312 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-24 15:06:45,135 INFO L231 Difference]: Finished difference. Result has 131 places, 133 transitions, 288 flow [2024-10-24 15:06:45,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=288, PETRI_PLACES=131, PETRI_TRANSITIONS=133} [2024-10-24 15:06:45,136 INFO L277 CegarLoopForPetriNet]: 158 programPoint places, -27 predicate places. [2024-10-24 15:06:45,137 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 133 transitions, 288 flow [2024-10-24 15:06:45,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 129.0) internal successors, (258), 2 states have internal predecessors, (258), 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) [2024-10-24 15:06:45,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:06:45,138 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:06:45,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 15:06:45,138 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-24 15:06:45,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:06:45,139 INFO L85 PathProgramCache]: Analyzing trace with hash -139374189, now seen corresponding path program 1 times [2024-10-24 15:06:45,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:06:45,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664997432] [2024-10-24 15:06:45,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:06:45,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:06:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:06:45,159 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:06:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:06:45,175 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:06:45,176 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:06:45,176 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-10-24 15:06:45,176 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2024-10-24 15:06:45,177 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2024-10-24 15:06:45,177 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2024-10-24 15:06:45,177 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2024-10-24 15:06:45,178 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2024-10-24 15:06:45,178 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2024-10-24 15:06:45,178 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2024-10-24 15:06:45,178 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2024-10-24 15:06:45,178 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2024-10-24 15:06:45,178 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2024-10-24 15:06:45,178 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2024-10-24 15:06:45,178 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2024-10-24 15:06:45,178 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2024-10-24 15:06:45,179 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2024-10-24 15:06:45,179 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2024-10-24 15:06:45,179 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2024-10-24 15:06:45,179 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2024-10-24 15:06:45,180 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2024-10-24 15:06:45,180 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2024-10-24 15:06:45,180 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2024-10-24 15:06:45,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 15:06:45,180 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-24 15:06:45,181 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:06:45,181 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-24 15:06:45,212 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:06:45,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 207 transitions, 454 flow [2024-10-24 15:06:45,240 INFO L124 PetriNetUnfolderBase]: 31/260 cut-off events. [2024-10-24 15:06:45,240 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-24 15:06:45,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 260 events. 31/260 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 784 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 225. Up to 12 conditions per place. [2024-10-24 15:06:45,242 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 207 transitions, 454 flow [2024-10-24 15:06:45,244 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 207 transitions, 454 flow [2024-10-24 15:06:45,245 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:06:45,245 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;@508d089a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:06:45,245 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-10-24 15:06:45,248 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:06:45,250 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-10-24 15:06:45,250 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-24 15:06:45,251 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:06:45,251 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] [2024-10-24 15:06:45,251 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-10-24 15:06:45,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:06:45,252 INFO L85 PathProgramCache]: Analyzing trace with hash -66149728, now seen corresponding path program 1 times [2024-10-24 15:06:45,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:06:45,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725516820] [2024-10-24 15:06:45,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:06:45,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:06:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:06:45,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:06:45,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:06:45,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725516820] [2024-10-24 15:06:45,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725516820] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:06:45,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:06:45,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 15:06:45,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845482848] [2024-10-24 15:06:45,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:06:45,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 15:06:45,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:06:45,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 15:06:45,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 15:06:45,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 207 [2024-10-24 15:06:45,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 207 transitions, 454 flow. Second operand has 2 states, 2 states have (on average 156.0) internal successors, (312), 2 states have internal predecessors, (312), 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) [2024-10-24 15:06:45,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:06:45,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 207 [2024-10-24 15:06:45,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:06:45,940 INFO L124 PetriNetUnfolderBase]: 1215/5182 cut-off events. [2024-10-24 15:06:45,940 INFO L125 PetriNetUnfolderBase]: For 2359/2359 co-relation queries the response was YES. [2024-10-24 15:06:45,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7072 conditions, 5182 events. 1215/5182 cut-off events. For 2359/2359 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 49845 event pairs, 852 based on Foata normal form. 1458/6116 useless extension candidates. Maximal degree in co-relation 2183. Up to 1216 conditions per place. [2024-10-24 15:06:45,991 INFO L140 encePairwiseOnDemand]: 175/207 looper letters, 15 selfloop transitions, 0 changer transitions 0/162 dead transitions. [2024-10-24 15:06:45,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 162 transitions, 394 flow [2024-10-24 15:06:45,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 15:06:45,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-24 15:06:45,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 357 transitions. [2024-10-24 15:06:45,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8623188405797102 [2024-10-24 15:06:45,993 INFO L175 Difference]: Start difference. First operand has 192 places, 207 transitions, 454 flow. Second operand 2 states and 357 transitions. [2024-10-24 15:06:45,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 162 transitions, 394 flow [2024-10-24 15:06:45,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 162 transitions, 382 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-24 15:06:46,000 INFO L231 Difference]: Finished difference. Result has 159 places, 162 transitions, 352 flow [2024-10-24 15:06:46,001 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=352, PETRI_PLACES=159, PETRI_TRANSITIONS=162} [2024-10-24 15:06:46,001 INFO L277 CegarLoopForPetriNet]: 192 programPoint places, -33 predicate places. [2024-10-24 15:06:46,001 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 162 transitions, 352 flow [2024-10-24 15:06:46,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 156.0) internal successors, (312), 2 states have internal predecessors, (312), 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) [2024-10-24 15:06:46,001 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:06:46,002 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:06:46,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 15:06:46,002 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-10-24 15:06:46,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:06:46,002 INFO L85 PathProgramCache]: Analyzing trace with hash 2139381796, now seen corresponding path program 1 times [2024-10-24 15:06:46,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:06:46,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975779902] [2024-10-24 15:06:46,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:06:46,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:06:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:06:46,020 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:06:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:06:46,035 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:06:46,035 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:06:46,036 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2024-10-24 15:06:46,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2024-10-24 15:06:46,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2024-10-24 15:06:46,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2024-10-24 15:06:46,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2024-10-24 15:06:46,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2024-10-24 15:06:46,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2024-10-24 15:06:46,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2024-10-24 15:06:46,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2024-10-24 15:06:46,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2024-10-24 15:06:46,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2024-10-24 15:06:46,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2024-10-24 15:06:46,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2024-10-24 15:06:46,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2024-10-24 15:06:46,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2024-10-24 15:06:46,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2024-10-24 15:06:46,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2024-10-24 15:06:46,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2024-10-24 15:06:46,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2024-10-24 15:06:46,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2024-10-24 15:06:46,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2024-10-24 15:06:46,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2024-10-24 15:06:46,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2024-10-24 15:06:46,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2024-10-24 15:06:46,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2024-10-24 15:06:46,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 15:06:46,040 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-24 15:06:46,041 WARN L239 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:06:46,041 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-10-24 15:06:46,074 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:06:46,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 244 transitions, 542 flow [2024-10-24 15:06:46,116 INFO L124 PetriNetUnfolderBase]: 37/308 cut-off events. [2024-10-24 15:06:46,116 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-10-24 15:06:46,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 308 events. 37/308 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 951 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 279. Up to 14 conditions per place. [2024-10-24 15:06:46,118 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 244 transitions, 542 flow [2024-10-24 15:06:46,121 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 244 transitions, 542 flow [2024-10-24 15:06:46,123 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:06:46,124 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;@508d089a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:06:46,124 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-10-24 15:06:46,128 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:06:46,129 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-10-24 15:06:46,129 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-24 15:06:46,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:06:46,129 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] [2024-10-24 15:06:46,129 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-24 15:06:46,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:06:46,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1748449284, now seen corresponding path program 1 times [2024-10-24 15:06:46,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:06:46,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314993025] [2024-10-24 15:06:46,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:06:46,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:06:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:06:46,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:06:46,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:06:46,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314993025] [2024-10-24 15:06:46,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314993025] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:06:46,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:06:46,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 15:06:46,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275528576] [2024-10-24 15:06:46,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:06:46,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 15:06:46,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:06:46,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 15:06:46,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 15:06:46,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 244 [2024-10-24 15:06:46,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 244 transitions, 542 flow. Second operand has 2 states, 2 states have (on average 183.0) internal successors, (366), 2 states have internal predecessors, (366), 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) [2024-10-24 15:06:46,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:06:46,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 244 [2024-10-24 15:06:46,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:06:48,547 INFO L124 PetriNetUnfolderBase]: 4374/16279 cut-off events. [2024-10-24 15:06:48,548 INFO L125 PetriNetUnfolderBase]: For 10297/10297 co-relation queries the response was YES. [2024-10-24 15:06:48,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23030 conditions, 16279 events. 4374/16279 cut-off events. For 10297/10297 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 186575 event pairs, 3282 based on Foata normal form. 5103/19805 useless extension candidates. Maximal degree in co-relation 7178. Up to 4375 conditions per place. [2024-10-24 15:06:48,733 INFO L140 encePairwiseOnDemand]: 206/244 looper letters, 18 selfloop transitions, 0 changer transitions 0/191 dead transitions. [2024-10-24 15:06:48,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 191 transitions, 472 flow [2024-10-24 15:06:48,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 15:06:48,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-24 15:06:48,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 420 transitions. [2024-10-24 15:06:48,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.860655737704918 [2024-10-24 15:06:48,734 INFO L175 Difference]: Start difference. First operand has 226 places, 244 transitions, 542 flow. Second operand 2 states and 420 transitions. [2024-10-24 15:06:48,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 191 transitions, 472 flow [2024-10-24 15:06:48,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 191 transitions, 452 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-10-24 15:06:48,744 INFO L231 Difference]: Finished difference. Result has 187 places, 191 transitions, 416 flow [2024-10-24 15:06:48,744 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=416, PETRI_PLACES=187, PETRI_TRANSITIONS=191} [2024-10-24 15:06:48,745 INFO L277 CegarLoopForPetriNet]: 226 programPoint places, -39 predicate places. [2024-10-24 15:06:48,745 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 191 transitions, 416 flow [2024-10-24 15:06:48,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 183.0) internal successors, (366), 2 states have internal predecessors, (366), 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) [2024-10-24 15:06:48,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:06:48,746 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:06:48,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 15:06:48,746 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-24 15:06:48,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:06:48,746 INFO L85 PathProgramCache]: Analyzing trace with hash 858640349, now seen corresponding path program 1 times [2024-10-24 15:06:48,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:06:48,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80429696] [2024-10-24 15:06:48,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:06:48,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:06:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:06:48,758 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:06:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:06:48,768 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:06:48,769 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:06:48,769 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-10-24 15:06:48,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2024-10-24 15:06:48,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2024-10-24 15:06:48,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2024-10-24 15:06:48,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2024-10-24 15:06:48,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2024-10-24 15:06:48,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2024-10-24 15:06:48,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2024-10-24 15:06:48,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2024-10-24 15:06:48,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2024-10-24 15:06:48,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2024-10-24 15:06:48,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2024-10-24 15:06:48,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2024-10-24 15:06:48,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2024-10-24 15:06:48,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2024-10-24 15:06:48,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2024-10-24 15:06:48,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2024-10-24 15:06:48,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2024-10-24 15:06:48,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2024-10-24 15:06:48,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2024-10-24 15:06:48,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2024-10-24 15:06:48,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2024-10-24 15:06:48,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2024-10-24 15:06:48,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2024-10-24 15:06:48,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2024-10-24 15:06:48,774 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2024-10-24 15:06:48,774 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2024-10-24 15:06:48,774 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2024-10-24 15:06:48,774 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2024-10-24 15:06:48,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 15:06:48,774 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-24 15:06:48,774 WARN L239 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:06:48,774 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2024-10-24 15:06:48,813 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:06:48,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 281 transitions, 632 flow [2024-10-24 15:06:48,843 INFO L124 PetriNetUnfolderBase]: 43/356 cut-off events. [2024-10-24 15:06:48,844 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-10-24 15:06:48,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 356 events. 43/356 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1153 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 334. Up to 16 conditions per place. [2024-10-24 15:06:48,847 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 281 transitions, 632 flow [2024-10-24 15:06:48,849 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 281 transitions, 632 flow [2024-10-24 15:06:48,850 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:06:48,851 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;@508d089a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:06:48,851 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-10-24 15:06:48,853 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:06:48,853 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-10-24 15:06:48,853 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-24 15:06:48,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:06:48,853 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] [2024-10-24 15:06:48,853 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-24 15:06:48,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:06:48,854 INFO L85 PathProgramCache]: Analyzing trace with hash -2105285244, now seen corresponding path program 1 times [2024-10-24 15:06:48,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:06:48,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183457185] [2024-10-24 15:06:48,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:06:48,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:06:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:06:48,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:06:48,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:06:48,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183457185] [2024-10-24 15:06:48,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183457185] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:06:48,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:06:48,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 15:06:48,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830077561] [2024-10-24 15:06:48,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:06:48,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 15:06:48,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:06:48,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 15:06:48,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 15:06:48,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 281 [2024-10-24 15:06:48,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 281 transitions, 632 flow. Second operand has 2 states, 2 states have (on average 210.0) internal successors, (420), 2 states have internal predecessors, (420), 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) [2024-10-24 15:06:48,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:06:48,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 281 [2024-10-24 15:06:48,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:06:56,821 INFO L124 PetriNetUnfolderBase]: 15309/51028 cut-off events. [2024-10-24 15:06:56,821 INFO L125 PetriNetUnfolderBase]: For 42373/42373 co-relation queries the response was YES. [2024-10-24 15:06:57,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74547 conditions, 51028 events. 15309/51028 cut-off events. For 42373/42373 co-relation queries the response was YES. Maximal size of possible extension queue 1427. Compared 672864 event pairs, 12030 based on Foata normal form. 17496/63788 useless extension candidates. Maximal degree in co-relation 23378. Up to 15310 conditions per place. [2024-10-24 15:06:57,774 INFO L140 encePairwiseOnDemand]: 237/281 looper letters, 21 selfloop transitions, 0 changer transitions 0/220 dead transitions. [2024-10-24 15:06:57,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 220 transitions, 552 flow [2024-10-24 15:06:57,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 15:06:57,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-24 15:06:57,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 483 transitions. [2024-10-24 15:06:57,776 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8594306049822064 [2024-10-24 15:06:57,776 INFO L175 Difference]: Start difference. First operand has 260 places, 281 transitions, 632 flow. Second operand 2 states and 483 transitions. [2024-10-24 15:06:57,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 220 transitions, 552 flow [2024-10-24 15:06:57,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 220 transitions, 522 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-10-24 15:06:57,794 INFO L231 Difference]: Finished difference. Result has 215 places, 220 transitions, 480 flow [2024-10-24 15:06:57,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=480, PETRI_PLACES=215, PETRI_TRANSITIONS=220} [2024-10-24 15:06:57,795 INFO L277 CegarLoopForPetriNet]: 260 programPoint places, -45 predicate places. [2024-10-24 15:06:57,795 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 220 transitions, 480 flow [2024-10-24 15:06:57,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 210.0) internal successors, (420), 2 states have internal predecessors, (420), 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) [2024-10-24 15:06:57,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:06:57,796 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:06:57,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 15:06:57,796 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-24 15:06:57,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:06:57,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1612359139, now seen corresponding path program 1 times [2024-10-24 15:06:57,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:06:57,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130060978] [2024-10-24 15:06:57,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:06:57,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:06:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:06:57,805 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:06:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:06:57,816 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:06:57,816 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:06:57,816 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2024-10-24 15:06:57,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2024-10-24 15:06:57,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2024-10-24 15:06:57,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2024-10-24 15:06:57,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2024-10-24 15:06:57,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2024-10-24 15:06:57,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2024-10-24 15:06:57,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2024-10-24 15:06:57,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2024-10-24 15:06:57,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2024-10-24 15:06:57,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2024-10-24 15:06:57,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2024-10-24 15:06:57,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2024-10-24 15:06:57,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2024-10-24 15:06:57,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2024-10-24 15:06:57,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2024-10-24 15:06:57,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2024-10-24 15:06:57,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2024-10-24 15:06:57,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2024-10-24 15:06:57,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2024-10-24 15:06:57,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2024-10-24 15:06:57,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2024-10-24 15:06:57,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2024-10-24 15:06:57,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2024-10-24 15:06:57,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2024-10-24 15:06:57,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2024-10-24 15:06:57,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2024-10-24 15:06:57,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2024-10-24 15:06:57,819 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2024-10-24 15:06:57,819 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2024-10-24 15:06:57,819 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2024-10-24 15:06:57,819 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2024-10-24 15:06:57,819 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2024-10-24 15:06:57,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 15:06:57,819 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-24 15:06:57,819 WARN L239 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:06:57,820 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2024-10-24 15:06:57,855 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:06:57,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 318 transitions, 724 flow [2024-10-24 15:06:57,891 INFO L124 PetriNetUnfolderBase]: 49/404 cut-off events. [2024-10-24 15:06:57,891 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-10-24 15:06:57,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 404 events. 49/404 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1325 event pairs, 0 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 390. Up to 18 conditions per place. [2024-10-24 15:06:57,896 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 318 transitions, 724 flow [2024-10-24 15:06:57,899 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 294 places, 318 transitions, 724 flow [2024-10-24 15:06:57,900 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:06:57,900 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;@508d089a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:06:57,900 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2024-10-24 15:06:57,902 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:06:57,902 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-10-24 15:06:57,902 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-24 15:06:57,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:06:57,902 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] [2024-10-24 15:06:57,903 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2024-10-24 15:06:57,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:06:57,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1139724824, now seen corresponding path program 1 times [2024-10-24 15:06:57,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:06:57,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586299104] [2024-10-24 15:06:57,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:06:57,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:06:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:06:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:06:57,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:06:57,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586299104] [2024-10-24 15:06:57,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586299104] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:06:57,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:06:57,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 15:06:57,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646551344] [2024-10-24 15:06:57,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:06:57,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 15:06:57,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:06:57,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 15:06:57,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 15:06:57,919 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 318 [2024-10-24 15:06:57,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 318 transitions, 724 flow. Second operand has 2 states, 2 states have (on average 237.0) internal successors, (474), 2 states have internal predecessors, (474), 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) [2024-10-24 15:06:57,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:06:57,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 318 [2024-10-24 15:06:57,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand