./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/02_inc_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/02_inc_cas.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 ede09850ec25b369afc0cd16258beff942f9fc7c5304532be31fd5925a934e14 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 16:44:29,727 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 16:44:29,793 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-14 16:44:29,797 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 16:44:29,798 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 16:44:29,818 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 16:44:29,819 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 16:44:29,819 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 16:44:29,820 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 16:44:29,823 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 16:44:29,824 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 16:44:29,824 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 16:44:29,825 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 16:44:29,825 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 16:44:29,825 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 16:44:29,825 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 16:44:29,826 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 16:44:29,826 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 16:44:29,826 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 16:44:29,826 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 16:44:29,827 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 16:44:29,827 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 16:44:29,827 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-14 16:44:29,828 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 16:44:29,828 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 16:44:29,828 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 16:44:29,828 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 16:44:29,829 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 16:44:29,829 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 16:44:29,829 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 16:44:29,830 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 16:44:29,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:44:29,830 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 16:44:29,830 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 16:44:29,831 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 16:44:29,831 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 16:44:29,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 16:44:29,832 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 16:44:29,832 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 16:44:29,832 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 16:44:29,832 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 16:44:29,833 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ede09850ec25b369afc0cd16258beff942f9fc7c5304532be31fd5925a934e14 [2024-10-14 16:44:30,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 16:44:30,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 16:44:30,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 16:44:30,118 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 16:44:30,118 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 16:44:30,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/02_inc_cas.i [2024-10-14 16:44:31,520 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 16:44:31,779 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 16:44:31,779 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/02_inc_cas.i [2024-10-14 16:44:31,799 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdeaf3c35/5ff7908c0d9748b3998afa7b9de7d6e6/FLAG246ba01f6 [2024-10-14 16:44:32,105 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdeaf3c35/5ff7908c0d9748b3998afa7b9de7d6e6 [2024-10-14 16:44:32,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 16:44:32,109 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 16:44:32,112 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 16:44:32,112 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 16:44:32,117 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 16:44:32,118 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:44:32" (1/1) ... [2024-10-14 16:44:32,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a1f50d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:32, skipping insertion in model container [2024-10-14 16:44:32,119 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:44:32" (1/1) ... [2024-10-14 16:44:32,160 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 16:44:32,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:44:32,547 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 16:44:32,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:44:32,644 INFO L204 MainTranslator]: Completed translation [2024-10-14 16:44:32,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:32 WrapperNode [2024-10-14 16:44:32,645 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 16:44:32,646 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 16:44:32,646 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 16:44:32,647 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 16:44:32,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:32" (1/1) ... [2024-10-14 16:44:32,673 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:32" (1/1) ... [2024-10-14 16:44:32,703 INFO L138 Inliner]: procedures = 170, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 115 [2024-10-14 16:44:32,707 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 16:44:32,708 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 16:44:32,708 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 16:44:32,708 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 16:44:32,718 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:32" (1/1) ... [2024-10-14 16:44:32,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:32" (1/1) ... [2024-10-14 16:44:32,722 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:32" (1/1) ... [2024-10-14 16:44:32,724 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:32" (1/1) ... [2024-10-14 16:44:32,737 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:32" (1/1) ... [2024-10-14 16:44:32,740 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:32" (1/1) ... [2024-10-14 16:44:32,742 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:32" (1/1) ... [2024-10-14 16:44:32,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:32" (1/1) ... [2024-10-14 16:44:32,749 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 16:44:32,750 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 16:44:32,750 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 16:44:32,750 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 16:44:32,753 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:32" (1/1) ... [2024-10-14 16:44:32,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:44:32,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:44:32,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 16:44:32,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 16:44:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-14 16:44:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-14 16:44:32,841 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-14 16:44:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-14 16:44:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 16:44:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 16:44:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 16:44:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 16:44:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-14 16:44:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 16:44:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 16:44:32,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 16:44:32,844 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 16:44:32,952 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 16:44:32,954 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 16:44:33,199 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 16:44:33,200 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 16:44:33,433 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 16:44:33,433 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 16:44:33,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:44:33 BoogieIcfgContainer [2024-10-14 16:44:33,434 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 16:44:33,440 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 16:44:33,440 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 16:44:33,445 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 16:44:33,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:44:32" (1/3) ... [2024-10-14 16:44:33,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f06006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:44:33, skipping insertion in model container [2024-10-14 16:44:33,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:32" (2/3) ... [2024-10-14 16:44:33,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f06006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:44:33, skipping insertion in model container [2024-10-14 16:44:33,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:44:33" (3/3) ... [2024-10-14 16:44:33,448 INFO L112 eAbstractionObserver]: Analyzing ICFG 02_inc_cas.i [2024-10-14 16:44:33,467 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 16:44:33,467 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-10-14 16:44:33,467 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 16:44:33,531 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:44:33,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 60 transitions, 124 flow [2024-10-14 16:44:33,603 INFO L124 PetriNetUnfolderBase]: 5/69 cut-off events. [2024-10-14 16:44:33,603 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:44:33,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 69 events. 5/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 124 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 46. Up to 4 conditions per place. [2024-10-14 16:44:33,611 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 60 transitions, 124 flow [2024-10-14 16:44:33,615 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 60 transitions, 124 flow [2024-10-14 16:44:33,627 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:44:33,634 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;@56ec2c60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:44:33,634 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-10-14 16:44:33,648 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:44:33,649 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2024-10-14 16:44:33,649 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:44:33,649 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:33,650 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:44:33,651 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2024-10-14 16:44:33,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:33,656 INFO L85 PathProgramCache]: Analyzing trace with hash -756387135, now seen corresponding path program 1 times [2024-10-14 16:44:33,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:33,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340471503] [2024-10-14 16:44:33,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:33,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:44:34,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:44:34,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:44:34,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340471503] [2024-10-14 16:44:34,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340471503] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:44:34,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:44:34,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 16:44:34,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069214260] [2024-10-14 16:44:34,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:44:34,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:44:34,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:44:34,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:44:34,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:44:34,285 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 60 [2024-10-14 16:44:34,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 124 flow. Second operand has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:44:34,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:44:34,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 60 [2024-10-14 16:44:34,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:44:34,343 INFO L124 PetriNetUnfolderBase]: 2/52 cut-off events. [2024-10-14 16:44:34,344 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 16:44:34,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 52 events. 2/52 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 5/54 useless extension candidates. Maximal degree in co-relation 37. Up to 5 conditions per place. [2024-10-14 16:44:34,345 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 4 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2024-10-14 16:44:34,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 108 flow [2024-10-14 16:44:34,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:44:34,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 16:44:34,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 107 transitions. [2024-10-14 16:44:34,356 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8916666666666667 [2024-10-14 16:44:34,358 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 124 flow. Second operand 2 states and 107 transitions. [2024-10-14 16:44:34,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 108 flow [2024-10-14 16:44:34,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 16:44:34,362 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 100 flow [2024-10-14 16:44:34,364 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=100, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2024-10-14 16:44:34,367 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -9 predicate places. [2024-10-14 16:44:34,367 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 100 flow [2024-10-14 16:44:34,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:44:34,368 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:34,368 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:44:34,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 16:44:34,369 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2024-10-14 16:44:34,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:34,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1903092179, now seen corresponding path program 1 times [2024-10-14 16:44:34,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:34,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728369659] [2024-10-14 16:44:34,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:34,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:44:34,392 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:44:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:44:34,427 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:44:34,427 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:44:34,428 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-10-14 16:44:34,430 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2024-10-14 16:44:34,430 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2024-10-14 16:44:34,430 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2024-10-14 16:44:34,430 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2024-10-14 16:44:34,430 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2024-10-14 16:44:34,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2024-10-14 16:44:34,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2024-10-14 16:44:34,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2024-10-14 16:44:34,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2024-10-14 16:44:34,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2024-10-14 16:44:34,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2024-10-14 16:44:34,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2024-10-14 16:44:34,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2024-10-14 16:44:34,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2024-10-14 16:44:34,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 16:44:34,432 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-14 16:44:34,438 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:44:34,438 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-14 16:44:34,492 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:44:34,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 96 transitions, 202 flow [2024-10-14 16:44:34,533 INFO L124 PetriNetUnfolderBase]: 9/116 cut-off events. [2024-10-14 16:44:34,534 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 16:44:34,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 116 events. 9/116 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 326 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 81. Up to 6 conditions per place. [2024-10-14 16:44:34,536 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 96 transitions, 202 flow [2024-10-14 16:44:34,538 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 96 transitions, 202 flow [2024-10-14 16:44:34,540 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:44:34,541 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;@56ec2c60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:44:34,542 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-10-14 16:44:34,546 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:44:34,548 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2024-10-14 16:44:34,549 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:44:34,549 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:34,549 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:44:34,549 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-14 16:44:34,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:34,552 INFO L85 PathProgramCache]: Analyzing trace with hash -32687135, now seen corresponding path program 1 times [2024-10-14 16:44:34,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:34,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984203652] [2024-10-14 16:44:34,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:34,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:44:34,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:44:34,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:44:34,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984203652] [2024-10-14 16:44:34,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984203652] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:44:34,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:44:34,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 16:44:34,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493106149] [2024-10-14 16:44:34,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:44:34,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:44:34,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:44:34,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:44:34,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:44:34,751 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 96 [2024-10-14 16:44:34,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 96 transitions, 202 flow. Second operand has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:44:34,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:44:34,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 96 [2024-10-14 16:44:34,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:44:34,892 INFO L124 PetriNetUnfolderBase]: 24/199 cut-off events. [2024-10-14 16:44:34,892 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-14 16:44:34,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 199 events. 24/199 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 694 event pairs, 12 based on Foata normal form. 21/199 useless extension candidates. Maximal degree in co-relation 175. Up to 37 conditions per place. [2024-10-14 16:44:34,896 INFO L140 encePairwiseOnDemand]: 80/96 looper letters, 8 selfloop transitions, 0 changer transitions 0/77 dead transitions. [2024-10-14 16:44:34,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 77 transitions, 180 flow [2024-10-14 16:44:34,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:44:34,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 16:44:34,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 168 transitions. [2024-10-14 16:44:34,900 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.875 [2024-10-14 16:44:34,900 INFO L175 Difference]: Start difference. First operand has 94 places, 96 transitions, 202 flow. Second operand 2 states and 168 transitions. [2024-10-14 16:44:34,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 77 transitions, 180 flow [2024-10-14 16:44:34,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 77 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 16:44:34,902 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 164 flow [2024-10-14 16:44:34,903 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=164, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2024-10-14 16:44:34,905 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -15 predicate places. [2024-10-14 16:44:34,905 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 164 flow [2024-10-14 16:44:34,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:44:34,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:34,906 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:44:34,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 16:44:34,906 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-14 16:44:34,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:34,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1923281428, now seen corresponding path program 1 times [2024-10-14 16:44:34,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:34,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440422992] [2024-10-14 16:44:34,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:34,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:44:34,920 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:44:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:44:34,929 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:44:34,929 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:44:34,929 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-10-14 16:44:34,929 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-10-14 16:44:34,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-10-14 16:44:34,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-10-14 16:44:34,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-10-14 16:44:34,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-10-14 16:44:34,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-10-14 16:44:34,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-10-14 16:44:34,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-10-14 16:44:34,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-10-14 16:44:34,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-10-14 16:44:34,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-10-14 16:44:34,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-10-14 16:44:34,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-10-14 16:44:34,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-10-14 16:44:34,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-10-14 16:44:34,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-10-14 16:44:34,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-10-14 16:44:34,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-10-14 16:44:34,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-10-14 16:44:34,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-10-14 16:44:34,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-10-14 16:44:34,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 16:44:34,934 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-14 16:44:34,934 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:44:34,934 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-14 16:44:35,001 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:44:35,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 132 transitions, 282 flow [2024-10-14 16:44:35,044 INFO L124 PetriNetUnfolderBase]: 13/163 cut-off events. [2024-10-14 16:44:35,044 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 16:44:35,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 163 events. 13/163 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 504 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 120. Up to 8 conditions per place. [2024-10-14 16:44:35,047 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 132 transitions, 282 flow [2024-10-14 16:44:35,049 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 132 transitions, 282 flow [2024-10-14 16:44:35,051 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:44:35,053 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;@56ec2c60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:44:35,053 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-10-14 16:44:35,057 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:44:35,059 INFO L124 PetriNetUnfolderBase]: 2/36 cut-off events. [2024-10-14 16:44:35,059 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:44:35,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:35,059 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:44:35,059 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-14 16:44:35,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:35,060 INFO L85 PathProgramCache]: Analyzing trace with hash -2143637730, now seen corresponding path program 1 times [2024-10-14 16:44:35,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:35,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934100032] [2024-10-14 16:44:35,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:35,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:44:35,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:44:35,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:44:35,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934100032] [2024-10-14 16:44:35,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934100032] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:44:35,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:44:35,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 16:44:35,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34063120] [2024-10-14 16:44:35,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:44:35,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:44:35,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:44:35,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:44:35,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:44:35,170 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 132 [2024-10-14 16:44:35,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 132 transitions, 282 flow. Second operand has 2 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:44:35,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:44:35,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 132 [2024-10-14 16:44:35,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:44:35,402 INFO L124 PetriNetUnfolderBase]: 174/842 cut-off events. [2024-10-14 16:44:35,402 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-10-14 16:44:35,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1153 conditions, 842 events. 174/842 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 5403 event pairs, 108 based on Foata normal form. 85/821 useless extension candidates. Maximal degree in co-relation 811. Up to 229 conditions per place. [2024-10-14 16:44:35,413 INFO L140 encePairwiseOnDemand]: 109/132 looper letters, 12 selfloop transitions, 0 changer transitions 0/106 dead transitions. [2024-10-14 16:44:35,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 106 transitions, 254 flow [2024-10-14 16:44:35,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:44:35,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 16:44:35,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 229 transitions. [2024-10-14 16:44:35,415 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8674242424242424 [2024-10-14 16:44:35,415 INFO L175 Difference]: Start difference. First operand has 129 places, 132 transitions, 282 flow. Second operand 2 states and 229 transitions. [2024-10-14 16:44:35,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 106 transitions, 254 flow [2024-10-14 16:44:35,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 106 transitions, 252 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-14 16:44:35,418 INFO L231 Difference]: Finished difference. Result has 108 places, 106 transitions, 228 flow [2024-10-14 16:44:35,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=228, PETRI_PLACES=108, PETRI_TRANSITIONS=106} [2024-10-14 16:44:35,420 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, -21 predicate places. [2024-10-14 16:44:35,420 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 106 transitions, 228 flow [2024-10-14 16:44:35,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:44:35,420 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:35,420 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:44:35,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 16:44:35,421 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-14 16:44:35,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:35,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1801324742, now seen corresponding path program 1 times [2024-10-14 16:44:35,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:35,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920989100] [2024-10-14 16:44:35,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:35,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:44:35,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:44:35,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:44:35,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920989100] [2024-10-14 16:44:35,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920989100] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:44:35,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:44:35,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 16:44:35,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246105625] [2024-10-14 16:44:35,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:44:35,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 16:44:35,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:44:35,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 16:44:35,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:44:36,102 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 132 [2024-10-14 16:44:36,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 106 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 89.5) internal successors, (537), 6 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:44:36,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:44:36,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 132 [2024-10-14 16:44:36,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:44:37,148 INFO L124 PetriNetUnfolderBase]: 805/2681 cut-off events. [2024-10-14 16:44:37,148 INFO L125 PetriNetUnfolderBase]: For 247/247 co-relation queries the response was YES. [2024-10-14 16:44:37,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4055 conditions, 2681 events. 805/2681 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 23374 event pairs, 235 based on Foata normal form. 0/2371 useless extension candidates. Maximal degree in co-relation 4049. Up to 770 conditions per place. [2024-10-14 16:44:37,178 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 46 selfloop transitions, 16 changer transitions 0/147 dead transitions. [2024-10-14 16:44:37,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 147 transitions, 474 flow [2024-10-14 16:44:37,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 16:44:37,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 16:44:37,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 591 transitions. [2024-10-14 16:44:37,185 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7462121212121212 [2024-10-14 16:44:37,185 INFO L175 Difference]: Start difference. First operand has 108 places, 106 transitions, 228 flow. Second operand 6 states and 591 transitions. [2024-10-14 16:44:37,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 147 transitions, 474 flow [2024-10-14 16:44:37,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 147 transitions, 474 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 16:44:37,191 INFO L231 Difference]: Finished difference. Result has 118 places, 121 transitions, 342 flow [2024-10-14 16:44:37,192 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=118, PETRI_TRANSITIONS=121} [2024-10-14 16:44:37,194 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, -11 predicate places. [2024-10-14 16:44:37,194 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 121 transitions, 342 flow [2024-10-14 16:44:37,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.5) internal successors, (537), 6 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:44:37,195 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:37,195 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, 1, 1] [2024-10-14 16:44:37,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 16:44:37,195 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-14 16:44:37,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:37,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1362698766, now seen corresponding path program 1 times [2024-10-14 16:44:37,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:37,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857740526] [2024-10-14 16:44:37,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:37,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:44:37,212 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:44:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:44:37,227 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:44:37,228 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:44:37,228 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-10-14 16:44:37,231 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2024-10-14 16:44:37,231 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2024-10-14 16:44:37,231 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2024-10-14 16:44:37,231 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2024-10-14 16:44:37,231 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2024-10-14 16:44:37,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2024-10-14 16:44:37,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2024-10-14 16:44:37,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2024-10-14 16:44:37,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2024-10-14 16:44:37,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2024-10-14 16:44:37,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2024-10-14 16:44:37,233 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2024-10-14 16:44:37,233 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2024-10-14 16:44:37,233 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2024-10-14 16:44:37,233 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2024-10-14 16:44:37,233 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2024-10-14 16:44:37,233 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2024-10-14 16:44:37,233 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2024-10-14 16:44:37,234 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2024-10-14 16:44:37,234 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2024-10-14 16:44:37,234 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2024-10-14 16:44:37,234 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2024-10-14 16:44:37,234 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2024-10-14 16:44:37,234 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2024-10-14 16:44:37,234 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2024-10-14 16:44:37,235 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2024-10-14 16:44:37,235 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2024-10-14 16:44:37,235 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2024-10-14 16:44:37,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 16:44:37,235 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-14 16:44:37,236 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:44:37,236 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-14 16:44:37,320 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:44:37,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 168 transitions, 364 flow [2024-10-14 16:44:37,349 INFO L124 PetriNetUnfolderBase]: 17/210 cut-off events. [2024-10-14 16:44:37,349 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-14 16:44:37,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 210 events. 17/210 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 703 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 171. Up to 10 conditions per place. [2024-10-14 16:44:37,353 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 168 transitions, 364 flow [2024-10-14 16:44:37,355 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 168 transitions, 364 flow [2024-10-14 16:44:37,358 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:44:37,358 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;@56ec2c60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:44:37,358 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-10-14 16:44:37,361 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:44:37,362 INFO L124 PetriNetUnfolderBase]: 2/36 cut-off events. [2024-10-14 16:44:37,362 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:44:37,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:37,362 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:44:37,362 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2024-10-14 16:44:37,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:37,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1567497022, now seen corresponding path program 1 times [2024-10-14 16:44:37,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:37,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927005350] [2024-10-14 16:44:37,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:37,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:44:37,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:44:37,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:44:37,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927005350] [2024-10-14 16:44:37,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927005350] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:44:37,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:44:37,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 16:44:37,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280405537] [2024-10-14 16:44:37,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:44:37,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:44:37,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:44:37,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:44:37,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:44:37,447 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 168 [2024-10-14 16:44:37,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 168 transitions, 364 flow. Second operand has 2 states, 2 states have (on average 123.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:44:37,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:44:37,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 168 [2024-10-14 16:44:37,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:44:38,124 INFO L124 PetriNetUnfolderBase]: 1028/3661 cut-off events. [2024-10-14 16:44:38,125 INFO L125 PetriNetUnfolderBase]: For 755/755 co-relation queries the response was YES. [2024-10-14 16:44:38,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5317 conditions, 3661 events. 1028/3661 cut-off events. For 755/755 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 32375 event pairs, 684 based on Foata normal form. 341/3544 useless extension candidates. Maximal degree in co-relation 3727. Up to 1253 conditions per place. [2024-10-14 16:44:38,243 INFO L140 encePairwiseOnDemand]: 138/168 looper letters, 16 selfloop transitions, 0 changer transitions 0/135 dead transitions. [2024-10-14 16:44:38,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 135 transitions, 330 flow [2024-10-14 16:44:38,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:44:38,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 16:44:38,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 290 transitions. [2024-10-14 16:44:38,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8630952380952381 [2024-10-14 16:44:38,248 INFO L175 Difference]: Start difference. First operand has 164 places, 168 transitions, 364 flow. Second operand 2 states and 290 transitions. [2024-10-14 16:44:38,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 135 transitions, 330 flow [2024-10-14 16:44:38,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 135 transitions, 324 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-14 16:44:38,254 INFO L231 Difference]: Finished difference. Result has 137 places, 135 transitions, 292 flow [2024-10-14 16:44:38,254 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=292, PETRI_PLACES=137, PETRI_TRANSITIONS=135} [2024-10-14 16:44:38,255 INFO L277 CegarLoopForPetriNet]: 164 programPoint places, -27 predicate places. [2024-10-14 16:44:38,255 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 135 transitions, 292 flow [2024-10-14 16:44:38,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 123.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:44:38,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:38,255 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:44:38,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 16:44:38,256 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2024-10-14 16:44:38,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:38,259 INFO L85 PathProgramCache]: Analyzing trace with hash -2033607695, now seen corresponding path program 1 times [2024-10-14 16:44:38,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:38,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571947931] [2024-10-14 16:44:38,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:38,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:44:38,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:44:38,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:44:38,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571947931] [2024-10-14 16:44:38,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571947931] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:44:38,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:44:38,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 16:44:38,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622536610] [2024-10-14 16:44:38,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:44:38,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 16:44:38,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:44:38,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 16:44:38,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:44:38,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 168 [2024-10-14 16:44:38,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 135 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:44:38,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:44:38,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 168 [2024-10-14 16:44:38,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:44:41,916 INFO L124 PetriNetUnfolderBase]: 4956/13322 cut-off events. [2024-10-14 16:44:41,917 INFO L125 PetriNetUnfolderBase]: For 1141/1141 co-relation queries the response was YES. [2024-10-14 16:44:41,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20720 conditions, 13322 events. 4956/13322 cut-off events. For 1141/1141 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 141069 event pairs, 1678 based on Foata normal form. 0/11793 useless extension candidates. Maximal degree in co-relation 20713. Up to 4383 conditions per place. [2024-10-14 16:44:42,074 INFO L140 encePairwiseOnDemand]: 156/168 looper letters, 62 selfloop transitions, 20 changer transitions 0/192 dead transitions. [2024-10-14 16:44:42,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 192 transitions, 630 flow [2024-10-14 16:44:42,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 16:44:42,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 16:44:42,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 761 transitions. [2024-10-14 16:44:42,077 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7549603174603174 [2024-10-14 16:44:42,077 INFO L175 Difference]: Start difference. First operand has 137 places, 135 transitions, 292 flow. Second operand 6 states and 761 transitions. [2024-10-14 16:44:42,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 192 transitions, 630 flow [2024-10-14 16:44:42,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 192 transitions, 630 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 16:44:42,086 INFO L231 Difference]: Finished difference. Result has 147 places, 154 transitions, 432 flow [2024-10-14 16:44:42,086 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=432, PETRI_PLACES=147, PETRI_TRANSITIONS=154} [2024-10-14 16:44:42,087 INFO L277 CegarLoopForPetriNet]: 164 programPoint places, -17 predicate places. [2024-10-14 16:44:42,087 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 154 transitions, 432 flow [2024-10-14 16:44:42,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:44:42,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:42,089 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:44:42,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 16:44:42,089 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2024-10-14 16:44:42,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:42,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1183191110, now seen corresponding path program 1 times [2024-10-14 16:44:42,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:42,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862823733] [2024-10-14 16:44:42,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:42,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:44:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 16:44:42,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:44:42,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862823733] [2024-10-14 16:44:42,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862823733] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:44:42,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:44:42,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 16:44:42,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620133949] [2024-10-14 16:44:42,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:44:42,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 16:44:42,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:44:42,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 16:44:42,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:44:42,589 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 168 [2024-10-14 16:44:42,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 154 transitions, 432 flow. Second operand has 6 states, 6 states have (on average 114.66666666666667) internal successors, (688), 6 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:44:42,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:44:42,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 168 [2024-10-14 16:44:42,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:44:48,007 INFO L124 PetriNetUnfolderBase]: 13786/35470 cut-off events. [2024-10-14 16:44:48,007 INFO L125 PetriNetUnfolderBase]: For 11514/12373 co-relation queries the response was YES. [2024-10-14 16:44:48,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63661 conditions, 35470 events. 13786/35470 cut-off events. For 11514/12373 co-relation queries the response was YES. Maximal size of possible extension queue 1515. Compared 431684 event pairs, 3668 based on Foata normal form. 0/31702 useless extension candidates. Maximal degree in co-relation 63649. Up to 12132 conditions per place. [2024-10-14 16:44:48,765 INFO L140 encePairwiseOnDemand]: 156/168 looper letters, 71 selfloop transitions, 60 changer transitions 0/247 dead transitions. [2024-10-14 16:44:48,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 247 transitions, 1106 flow [2024-10-14 16:44:48,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 16:44:48,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 16:44:48,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 757 transitions. [2024-10-14 16:44:48,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7509920634920635 [2024-10-14 16:44:48,768 INFO L175 Difference]: Start difference. First operand has 147 places, 154 transitions, 432 flow. Second operand 6 states and 757 transitions. [2024-10-14 16:44:48,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 247 transitions, 1106 flow [2024-10-14 16:44:48,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 247 transitions, 1106 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 16:44:48,791 INFO L231 Difference]: Finished difference. Result has 157 places, 213 transitions, 1024 flow [2024-10-14 16:44:48,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1024, PETRI_PLACES=157, PETRI_TRANSITIONS=213} [2024-10-14 16:44:48,792 INFO L277 CegarLoopForPetriNet]: 164 programPoint places, -7 predicate places. [2024-10-14 16:44:48,792 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 213 transitions, 1024 flow [2024-10-14 16:44:48,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.66666666666667) internal successors, (688), 6 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:44:48,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:48,793 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, 1, 1] [2024-10-14 16:44:48,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 16:44:48,793 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2024-10-14 16:44:48,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:48,794 INFO L85 PathProgramCache]: Analyzing trace with hash 275955197, now seen corresponding path program 1 times [2024-10-14 16:44:48,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:48,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535851605] [2024-10-14 16:44:48,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:48,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:44:48,812 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:44:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:44:48,829 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:44:48,829 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:44:48,831 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2024-10-14 16:44:48,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2024-10-14 16:44:48,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2024-10-14 16:44:48,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2024-10-14 16:44:48,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2024-10-14 16:44:48,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2024-10-14 16:44:48,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2024-10-14 16:44:48,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2024-10-14 16:44:48,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2024-10-14 16:44:48,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2024-10-14 16:44:48,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2024-10-14 16:44:48,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2024-10-14 16:44:48,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2024-10-14 16:44:48,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2024-10-14 16:44:48,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2024-10-14 16:44:48,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2024-10-14 16:44:48,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2024-10-14 16:44:48,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2024-10-14 16:44:48,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2024-10-14 16:44:48,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2024-10-14 16:44:48,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2024-10-14 16:44:48,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2024-10-14 16:44:48,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2024-10-14 16:44:48,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2024-10-14 16:44:48,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2024-10-14 16:44:48,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2024-10-14 16:44:48,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2024-10-14 16:44:48,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2024-10-14 16:44:48,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2024-10-14 16:44:48,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2024-10-14 16:44:48,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2024-10-14 16:44:48,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2024-10-14 16:44:48,838 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2024-10-14 16:44:48,838 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2024-10-14 16:44:48,838 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2024-10-14 16:44:48,838 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2024-10-14 16:44:48,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 16:44:48,839 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-14 16:44:48,839 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:44:48,840 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-14 16:44:48,959 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:44:48,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 204 transitions, 448 flow [2024-10-14 16:44:49,017 INFO L124 PetriNetUnfolderBase]: 21/257 cut-off events. [2024-10-14 16:44:49,017 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-14 16:44:49,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 257 events. 21/257 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 888 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 223. Up to 12 conditions per place. [2024-10-14 16:44:49,021 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 204 transitions, 448 flow [2024-10-14 16:44:49,027 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 204 transitions, 448 flow [2024-10-14 16:44:49,031 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:44:49,031 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;@56ec2c60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:44:49,031 INFO L334 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2024-10-14 16:44:49,035 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:44:49,035 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2024-10-14 16:44:49,035 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:44:49,035 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:49,035 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:44:49,036 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2024-10-14 16:44:49,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:49,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1884386792, now seen corresponding path program 1 times [2024-10-14 16:44:49,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:49,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560556166] [2024-10-14 16:44:49,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:49,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:44:49,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:44:49,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:44:49,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560556166] [2024-10-14 16:44:49,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560556166] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:44:49,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:44:49,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 16:44:49,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715638730] [2024-10-14 16:44:49,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:44:49,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:44:49,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:44:49,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:44:49,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:44:49,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 204 [2024-10-14 16:44:49,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 204 transitions, 448 flow. Second operand has 2 states, 2 states have (on average 148.0) internal successors, (296), 2 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:44:49,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:44:49,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 204 [2024-10-14 16:44:49,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:44:51,593 INFO L124 PetriNetUnfolderBase]: 5466/15952 cut-off events. [2024-10-14 16:44:51,593 INFO L125 PetriNetUnfolderBase]: For 4599/4599 co-relation queries the response was YES. [2024-10-14 16:44:51,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24265 conditions, 15952 events. 5466/15952 cut-off events. For 4599/4599 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 172017 event pairs, 3756 based on Foata normal form. 1365/15440 useless extension candidates. Maximal degree in co-relation 16915. Up to 6373 conditions per place. [2024-10-14 16:44:51,828 INFO L140 encePairwiseOnDemand]: 167/204 looper letters, 20 selfloop transitions, 0 changer transitions 0/164 dead transitions. [2024-10-14 16:44:51,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 164 transitions, 408 flow [2024-10-14 16:44:51,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:44:51,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 16:44:51,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 351 transitions. [2024-10-14 16:44:51,830 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8602941176470589 [2024-10-14 16:44:51,830 INFO L175 Difference]: Start difference. First operand has 199 places, 204 transitions, 448 flow. Second operand 2 states and 351 transitions. [2024-10-14 16:44:51,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 164 transitions, 408 flow [2024-10-14 16:44:51,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 164 transitions, 396 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-14 16:44:51,835 INFO L231 Difference]: Finished difference. Result has 166 places, 164 transitions, 356 flow [2024-10-14 16:44:51,835 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=356, PETRI_PLACES=166, PETRI_TRANSITIONS=164} [2024-10-14 16:44:51,836 INFO L277 CegarLoopForPetriNet]: 199 programPoint places, -33 predicate places. [2024-10-14 16:44:51,836 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 164 transitions, 356 flow [2024-10-14 16:44:51,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 148.0) internal successors, (296), 2 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:44:51,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:51,837 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:44:51,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 16:44:51,837 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2024-10-14 16:44:51,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:51,838 INFO L85 PathProgramCache]: Analyzing trace with hash -58708352, now seen corresponding path program 1 times [2024-10-14 16:44:51,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:51,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538512811] [2024-10-14 16:44:51,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:51,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:44:52,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:44:52,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:44:52,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538512811] [2024-10-14 16:44:52,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538512811] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:44:52,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:44:52,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 16:44:52,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741239283] [2024-10-14 16:44:52,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:44:52,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 16:44:52,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:44:52,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 16:44:52,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:44:52,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 204 [2024-10-14 16:44:52,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 164 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:44:52,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:44:52,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 204 [2024-10-14 16:44:52,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:03,498 INFO L124 PetriNetUnfolderBase]: 26524/61220 cut-off events. [2024-10-14 16:45:03,498 INFO L125 PetriNetUnfolderBase]: For 4772/4772 co-relation queries the response was YES. [2024-10-14 16:45:04,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97739 conditions, 61220 events. 26524/61220 cut-off events. For 4772/4772 co-relation queries the response was YES. Maximal size of possible extension queue 2172. Compared 727284 event pairs, 9749 based on Foata normal form. 0/54619 useless extension candidates. Maximal degree in co-relation 97731. Up to 22453 conditions per place. [2024-10-14 16:45:04,433 INFO L140 encePairwiseOnDemand]: 191/204 looper letters, 78 selfloop transitions, 24 changer transitions 0/237 dead transitions. [2024-10-14 16:45:04,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 237 transitions, 786 flow [2024-10-14 16:45:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 16:45:04,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 16:45:04,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 931 transitions. [2024-10-14 16:45:04,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7606209150326797 [2024-10-14 16:45:04,437 INFO L175 Difference]: Start difference. First operand has 166 places, 164 transitions, 356 flow. Second operand 6 states and 931 transitions. [2024-10-14 16:45:04,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 237 transitions, 786 flow [2024-10-14 16:45:04,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 237 transitions, 786 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 16:45:04,443 INFO L231 Difference]: Finished difference. Result has 176 places, 187 transitions, 522 flow [2024-10-14 16:45:04,443 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=522, PETRI_PLACES=176, PETRI_TRANSITIONS=187} [2024-10-14 16:45:04,444 INFO L277 CegarLoopForPetriNet]: 199 programPoint places, -23 predicate places. [2024-10-14 16:45:04,444 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 187 transitions, 522 flow [2024-10-14 16:45:04,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:04,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:04,445 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:45:04,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 16:45:04,445 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2024-10-14 16:45:04,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:04,446 INFO L85 PathProgramCache]: Analyzing trace with hash -158864506, now seen corresponding path program 1 times [2024-10-14 16:45:04,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:04,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182724078] [2024-10-14 16:45:04,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:04,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:04,678 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 16:45:04,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:04,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182724078] [2024-10-14 16:45:04,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182724078] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:45:04,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:45:04,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 16:45:04,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154096699] [2024-10-14 16:45:04,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:45:04,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 16:45:04,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:04,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 16:45:04,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:45:04,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 204 [2024-10-14 16:45:04,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 187 transitions, 522 flow. Second operand has 6 states, 6 states have (on average 139.66666666666666) internal successors, (838), 6 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:45:04,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:04,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 204 [2024-10-14 16:45:04,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand