./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/48_ticket_lock_low_contention_vs-b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-b.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 bee6bfabfc9168d01d046a770b423c49a0035ad8b39e289385170f3b76ba2fb2 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 16:51:53,185 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 16:51:53,251 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-11 16:51:53,255 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 16:51:53,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 16:51:53,284 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 16:51:53,284 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 16:51:53,284 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 16:51:53,285 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 16:51:53,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 16:51:53,286 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 16:51:53,286 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 16:51:53,286 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 16:51:53,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 16:51:53,287 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 16:51:53,287 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 16:51:53,288 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 16:51:53,288 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 16:51:53,288 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 16:51:53,288 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 16:51:53,289 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 16:51:53,297 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 16:51:53,297 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-11 16:51:53,297 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 16:51:53,297 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 16:51:53,298 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 16:51:53,298 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 16:51:53,298 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 16:51:53,298 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 16:51:53,298 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 16:51:53,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 16:51:53,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:51:53,299 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 16:51:53,299 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 16:51:53,299 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 16:51:53,299 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 16:51:53,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 16:51:53,300 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 16:51:53,300 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 16:51:53,300 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 16:51:53,300 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 16:51:53,301 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bee6bfabfc9168d01d046a770b423c49a0035ad8b39e289385170f3b76ba2fb2 [2024-10-11 16:51:53,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 16:51:53,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 16:51:53,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 16:51:53,507 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 16:51:53,507 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 16:51:53,508 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-b.i [2024-10-11 16:51:54,887 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 16:51:55,082 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 16:51:55,082 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-b.i [2024-10-11 16:51:55,094 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/be0bceadb/00173e55f28e4bf7bd8aefc7e519b230/FLAG79a32aed7 [2024-10-11 16:51:55,457 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/be0bceadb/00173e55f28e4bf7bd8aefc7e519b230 [2024-10-11 16:51:55,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 16:51:55,462 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 16:51:55,463 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 16:51:55,464 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 16:51:55,468 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 16:51:55,469 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:51:55" (1/1) ... [2024-10-11 16:51:55,469 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c8c69c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:55, skipping insertion in model container [2024-10-11 16:51:55,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:51:55" (1/1) ... [2024-10-11 16:51:55,508 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 16:51:55,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:51:55,740 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 16:51:55,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:51:55,809 INFO L204 MainTranslator]: Completed translation [2024-10-11 16:51:55,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:55 WrapperNode [2024-10-11 16:51:55,809 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 16:51:55,810 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 16:51:55,810 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 16:51:55,810 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 16:51:55,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:55" (1/1) ... [2024-10-11 16:51:55,833 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:55" (1/1) ... [2024-10-11 16:51:55,863 INFO L138 Inliner]: procedures = 169, calls = 16, calls flagged for inlining = 6, calls inlined = 9, statements flattened = 178 [2024-10-11 16:51:55,863 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 16:51:55,864 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 16:51:55,864 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 16:51:55,864 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 16:51:55,873 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:55" (1/1) ... [2024-10-11 16:51:55,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:55" (1/1) ... [2024-10-11 16:51:55,877 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:55" (1/1) ... [2024-10-11 16:51:55,877 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:55" (1/1) ... [2024-10-11 16:51:55,882 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:55" (1/1) ... [2024-10-11 16:51:55,885 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:55" (1/1) ... [2024-10-11 16:51:55,886 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:55" (1/1) ... [2024-10-11 16:51:55,887 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:55" (1/1) ... [2024-10-11 16:51:55,889 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 16:51:55,889 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 16:51:55,890 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 16:51:55,890 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 16:51:55,890 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:55" (1/1) ... [2024-10-11 16:51:55,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:51:55,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:51:55,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 16:51:55,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 16:51:55,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-11 16:51:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-11 16:51:55,974 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-11 16:51:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-11 16:51:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 16:51:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 16:51:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 16:51:55,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-11 16:51:55,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 16:51:55,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 16:51:55,976 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 16:51:56,119 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 16:51:56,120 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 16:51:56,347 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 16:51:56,347 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 16:51:56,548 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 16:51:56,548 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 16:51:56,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:51:56 BoogieIcfgContainer [2024-10-11 16:51:56,550 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 16:51:56,551 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 16:51:56,551 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 16:51:56,554 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 16:51:56,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:51:55" (1/3) ... [2024-10-11 16:51:56,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59874f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:51:56, skipping insertion in model container [2024-10-11 16:51:56,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:55" (2/3) ... [2024-10-11 16:51:56,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59874f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:51:56, skipping insertion in model container [2024-10-11 16:51:56,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:51:56" (3/3) ... [2024-10-11 16:51:56,557 INFO L112 eAbstractionObserver]: Analyzing ICFG 48_ticket_lock_low_contention_vs-b.i [2024-10-11 16:51:56,569 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 16:51:56,569 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-10-11 16:51:56,570 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 16:51:56,616 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:51:56,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 156 transitions, 316 flow [2024-10-11 16:51:56,695 INFO L124 PetriNetUnfolderBase]: 14/237 cut-off events. [2024-10-11 16:51:56,695 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:51:56,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 237 events. 14/237 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 805 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 142. Up to 4 conditions per place. [2024-10-11 16:51:56,708 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 156 transitions, 316 flow [2024-10-11 16:51:56,716 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 156 transitions, 316 flow [2024-10-11 16:51:56,730 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:51:56,738 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;@8758ffe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:51:56,738 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2024-10-11 16:51:56,743 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:51:56,743 INFO L124 PetriNetUnfolderBase]: 1/27 cut-off events. [2024-10-11 16:51:56,743 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:51:56,744 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:56,744 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:51:56,745 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2024-10-11 16:51:56,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:56,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1265999894, now seen corresponding path program 1 times [2024-10-11 16:51:56,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:56,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652777674] [2024-10-11 16:51:56,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:56,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:56,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:51:56,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:56,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652777674] [2024-10-11 16:51:56,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652777674] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:56,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:56,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:51:56,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611180552] [2024-10-11 16:51:56,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:56,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 16:51:56,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:56,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 16:51:56,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 16:51:56,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 156 [2024-10-11 16:51:56,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 156 transitions, 316 flow. Second operand has 2 states, 2 states have (on average 135.0) internal successors, (270), 2 states have internal predecessors, (270), 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) [2024-10-11 16:51:56,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:56,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 156 [2024-10-11 16:51:56,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:51:57,007 INFO L124 PetriNetUnfolderBase]: 5/255 cut-off events. [2024-10-11 16:51:57,007 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 16:51:57,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 255 events. 5/255 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 780 event pairs, 1 based on Foata normal form. 16/232 useless extension candidates. Maximal degree in co-relation 175. Up to 7 conditions per place. [2024-10-11 16:51:57,012 INFO L140 encePairwiseOnDemand]: 139/156 looper letters, 3 selfloop transitions, 0 changer transitions 0/135 dead transitions. [2024-10-11 16:51:57,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 135 transitions, 280 flow [2024-10-11 16:51:57,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 16:51:57,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 16:51:57,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 288 transitions. [2024-10-11 16:51:57,025 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9230769230769231 [2024-10-11 16:51:57,027 INFO L175 Difference]: Start difference. First operand has 150 places, 156 transitions, 316 flow. Second operand 2 states and 288 transitions. [2024-10-11 16:51:57,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 135 transitions, 280 flow [2024-10-11 16:51:57,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 135 transitions, 280 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:51:57,036 INFO L231 Difference]: Finished difference. Result has 137 places, 135 transitions, 274 flow [2024-10-11 16:51:57,038 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=274, 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=274, PETRI_PLACES=137, PETRI_TRANSITIONS=135} [2024-10-11 16:51:57,042 INFO L277 CegarLoopForPetriNet]: 150 programPoint places, -13 predicate places. [2024-10-11 16:51:57,043 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 135 transitions, 274 flow [2024-10-11 16:51:57,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 135.0) internal successors, (270), 2 states have internal predecessors, (270), 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) [2024-10-11 16:51:57,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:57,043 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:51:57,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 16:51:57,044 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2024-10-11 16:51:57,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:57,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1111083144, now seen corresponding path program 1 times [2024-10-11 16:51:57,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:57,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8283452] [2024-10-11 16:51:57,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:57,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:51:57,071 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:51:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:51:57,106 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:51:57,106 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:51:57,108 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2024-10-11 16:51:57,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (35 of 37 remaining) [2024-10-11 16:51:57,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (34 of 37 remaining) [2024-10-11 16:51:57,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (33 of 37 remaining) [2024-10-11 16:51:57,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 37 remaining) [2024-10-11 16:51:57,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (31 of 37 remaining) [2024-10-11 16:51:57,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (30 of 37 remaining) [2024-10-11 16:51:57,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (29 of 37 remaining) [2024-10-11 16:51:57,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (28 of 37 remaining) [2024-10-11 16:51:57,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (27 of 37 remaining) [2024-10-11 16:51:57,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (26 of 37 remaining) [2024-10-11 16:51:57,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (25 of 37 remaining) [2024-10-11 16:51:57,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (24 of 37 remaining) [2024-10-11 16:51:57,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (23 of 37 remaining) [2024-10-11 16:51:57,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (22 of 37 remaining) [2024-10-11 16:51:57,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 37 remaining) [2024-10-11 16:51:57,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (20 of 37 remaining) [2024-10-11 16:51:57,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 37 remaining) [2024-10-11 16:51:57,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (18 of 37 remaining) [2024-10-11 16:51:57,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (17 of 37 remaining) [2024-10-11 16:51:57,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (16 of 37 remaining) [2024-10-11 16:51:57,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (15 of 37 remaining) [2024-10-11 16:51:57,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (14 of 37 remaining) [2024-10-11 16:51:57,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (13 of 37 remaining) [2024-10-11 16:51:57,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (12 of 37 remaining) [2024-10-11 16:51:57,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 37 remaining) [2024-10-11 16:51:57,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 37 remaining) [2024-10-11 16:51:57,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 37 remaining) [2024-10-11 16:51:57,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 37 remaining) [2024-10-11 16:51:57,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 37 remaining) [2024-10-11 16:51:57,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 37 remaining) [2024-10-11 16:51:57,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 37 remaining) [2024-10-11 16:51:57,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (4 of 37 remaining) [2024-10-11 16:51:57,117 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (3 of 37 remaining) [2024-10-11 16:51:57,117 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 37 remaining) [2024-10-11 16:51:57,117 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (1 of 37 remaining) [2024-10-11 16:51:57,117 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (0 of 37 remaining) [2024-10-11 16:51:57,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 16:51:57,118 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-11 16:51:57,120 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:51:57,120 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 16:51:57,155 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:51:57,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 218 transitions, 446 flow [2024-10-11 16:51:57,251 INFO L124 PetriNetUnfolderBase]: 23/380 cut-off events. [2024-10-11 16:51:57,251 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 16:51:57,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 380 events. 23/380 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1695 event pairs, 0 based on Foata normal form. 0/294 useless extension candidates. Maximal degree in co-relation 238. Up to 6 conditions per place. [2024-10-11 16:51:57,257 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 218 transitions, 446 flow [2024-10-11 16:51:57,260 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 218 transitions, 446 flow [2024-10-11 16:51:57,262 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:51:57,263 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;@8758ffe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:51:57,263 INFO L334 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2024-10-11 16:51:57,267 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:51:57,267 INFO L124 PetriNetUnfolderBase]: 1/27 cut-off events. [2024-10-11 16:51:57,267 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:51:57,267 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:57,267 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:51:57,268 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2024-10-11 16:51:57,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:57,269 INFO L85 PathProgramCache]: Analyzing trace with hash 872190896, now seen corresponding path program 1 times [2024-10-11 16:51:57,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:57,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864744848] [2024-10-11 16:51:57,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:57,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:57,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:51:57,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:57,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864744848] [2024-10-11 16:51:57,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864744848] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:57,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:57,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:51:57,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674739467] [2024-10-11 16:51:57,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:57,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 16:51:57,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:57,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 16:51:57,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 16:51:57,313 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 218 [2024-10-11 16:51:57,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 218 transitions, 446 flow. Second operand has 2 states, 2 states have (on average 186.0) internal successors, (372), 2 states have internal predecessors, (372), 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) [2024-10-11 16:51:57,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:57,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 218 [2024-10-11 16:51:57,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:51:57,407 INFO L124 PetriNetUnfolderBase]: 18/628 cut-off events. [2024-10-11 16:51:57,408 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-11 16:51:57,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 628 events. 18/628 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3571 event pairs, 7 based on Foata normal form. 46/567 useless extension candidates. Maximal degree in co-relation 385. Up to 21 conditions per place. [2024-10-11 16:51:57,418 INFO L140 encePairwiseOnDemand]: 193/218 looper letters, 5 selfloop transitions, 0 changer transitions 0/187 dead transitions. [2024-10-11 16:51:57,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 187 transitions, 394 flow [2024-10-11 16:51:57,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 16:51:57,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 16:51:57,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 400 transitions. [2024-10-11 16:51:57,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9174311926605505 [2024-10-11 16:51:57,424 INFO L175 Difference]: Start difference. First operand has 210 places, 218 transitions, 446 flow. Second operand 2 states and 400 transitions. [2024-10-11 16:51:57,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 187 transitions, 394 flow [2024-10-11 16:51:57,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 187 transitions, 394 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:51:57,429 INFO L231 Difference]: Finished difference. Result has 190 places, 187 transitions, 384 flow [2024-10-11 16:51:57,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=384, PETRI_PLACES=190, PETRI_TRANSITIONS=187} [2024-10-11 16:51:57,430 INFO L277 CegarLoopForPetriNet]: 210 programPoint places, -20 predicate places. [2024-10-11 16:51:57,431 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 187 transitions, 384 flow [2024-10-11 16:51:57,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 186.0) internal successors, (372), 2 states have internal predecessors, (372), 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) [2024-10-11 16:51:57,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:57,431 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:51:57,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 16:51:57,435 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2024-10-11 16:51:57,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:57,437 INFO L85 PathProgramCache]: Analyzing trace with hash 335312196, now seen corresponding path program 1 times [2024-10-11 16:51:57,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:57,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179967837] [2024-10-11 16:51:57,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:57,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:57,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:51:57,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:57,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179967837] [2024-10-11 16:51:57,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179967837] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:57,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:57,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 16:51:57,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449857951] [2024-10-11 16:51:57,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:57,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 16:51:57,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:57,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 16:51:57,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:51:57,963 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 218 [2024-10-11 16:51:57,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 187 transitions, 384 flow. Second operand has 6 states, 6 states have (on average 176.33333333333334) internal successors, (1058), 6 states have internal predecessors, (1058), 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) [2024-10-11 16:51:57,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:57,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 218 [2024-10-11 16:51:57,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:51:58,296 INFO L124 PetriNetUnfolderBase]: 134/2680 cut-off events. [2024-10-11 16:51:58,298 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-11 16:51:58,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2904 conditions, 2680 events. 134/2680 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 24274 event pairs, 33 based on Foata normal form. 0/2214 useless extension candidates. Maximal degree in co-relation 2899. Up to 141 conditions per place. [2024-10-11 16:51:58,316 INFO L140 encePairwiseOnDemand]: 209/218 looper letters, 18 selfloop transitions, 14 changer transitions 0/204 dead transitions. [2024-10-11 16:51:58,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 204 transitions, 482 flow [2024-10-11 16:51:58,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 16:51:58,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 16:51:58,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1083 transitions. [2024-10-11 16:51:58,321 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8279816513761468 [2024-10-11 16:51:58,321 INFO L175 Difference]: Start difference. First operand has 190 places, 187 transitions, 384 flow. Second operand 6 states and 1083 transitions. [2024-10-11 16:51:58,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 204 transitions, 482 flow [2024-10-11 16:51:58,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 204 transitions, 482 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:51:58,327 INFO L231 Difference]: Finished difference. Result has 200 places, 201 transitions, 486 flow [2024-10-11 16:51:58,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=486, PETRI_PLACES=200, PETRI_TRANSITIONS=201} [2024-10-11 16:51:58,330 INFO L277 CegarLoopForPetriNet]: 210 programPoint places, -10 predicate places. [2024-10-11 16:51:58,331 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 201 transitions, 486 flow [2024-10-11 16:51:58,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.33333333333334) internal successors, (1058), 6 states have internal predecessors, (1058), 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) [2024-10-11 16:51:58,332 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:58,332 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] [2024-10-11 16:51:58,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 16:51:58,333 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2024-10-11 16:51:58,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:58,333 INFO L85 PathProgramCache]: Analyzing trace with hash -94538543, now seen corresponding path program 1 times [2024-10-11 16:51:58,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:58,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61833741] [2024-10-11 16:51:58,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:58,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:58,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:51:58,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:58,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61833741] [2024-10-11 16:51:58,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61833741] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:58,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:58,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 16:51:58,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630138579] [2024-10-11 16:51:58,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:58,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 16:51:58,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:58,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 16:51:58,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:51:58,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 218 [2024-10-11 16:51:58,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 201 transitions, 486 flow. Second operand has 6 states, 6 states have (on average 178.33333333333334) internal successors, (1070), 6 states have internal predecessors, (1070), 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) [2024-10-11 16:51:58,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:58,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 218 [2024-10-11 16:51:58,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:51:59,332 INFO L124 PetriNetUnfolderBase]: 424/5479 cut-off events. [2024-10-11 16:51:59,332 INFO L125 PetriNetUnfolderBase]: For 551/587 co-relation queries the response was YES. [2024-10-11 16:51:59,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6940 conditions, 5479 events. 424/5479 cut-off events. For 551/587 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 59225 event pairs, 36 based on Foata normal form. 0/4584 useless extension candidates. Maximal degree in co-relation 6930. Up to 366 conditions per place. [2024-10-11 16:51:59,368 INFO L140 encePairwiseOnDemand]: 209/218 looper letters, 28 selfloop transitions, 30 changer transitions 0/238 dead transitions. [2024-10-11 16:51:59,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 238 transitions, 768 flow [2024-10-11 16:51:59,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 16:51:59,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 16:51:59,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1097 transitions. [2024-10-11 16:51:59,370 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8386850152905199 [2024-10-11 16:51:59,370 INFO L175 Difference]: Start difference. First operand has 200 places, 201 transitions, 486 flow. Second operand 6 states and 1097 transitions. [2024-10-11 16:51:59,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 238 transitions, 768 flow [2024-10-11 16:51:59,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 238 transitions, 768 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:51:59,380 INFO L231 Difference]: Finished difference. Result has 210 places, 231 transitions, 764 flow [2024-10-11 16:51:59,381 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=764, PETRI_PLACES=210, PETRI_TRANSITIONS=231} [2024-10-11 16:51:59,382 INFO L277 CegarLoopForPetriNet]: 210 programPoint places, 0 predicate places. [2024-10-11 16:51:59,382 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 231 transitions, 764 flow [2024-10-11 16:51:59,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 178.33333333333334) internal successors, (1070), 6 states have internal predecessors, (1070), 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) [2024-10-11 16:51:59,385 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:59,385 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] [2024-10-11 16:51:59,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 16:51:59,386 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2024-10-11 16:51:59,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:59,386 INFO L85 PathProgramCache]: Analyzing trace with hash 112493558, now seen corresponding path program 1 times [2024-10-11 16:51:59,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:59,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26912197] [2024-10-11 16:51:59,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:59,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:59,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:51:59,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:59,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26912197] [2024-10-11 16:51:59,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26912197] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:59,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:59,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:51:59,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111814316] [2024-10-11 16:51:59,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:59,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:51:59,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:59,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:51:59,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:51:59,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 218 [2024-10-11 16:51:59,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 231 transitions, 764 flow. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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) [2024-10-11 16:51:59,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:59,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 218 [2024-10-11 16:51:59,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:52:02,699 INFO L124 PetriNetUnfolderBase]: 4605/30419 cut-off events. [2024-10-11 16:52:02,700 INFO L125 PetriNetUnfolderBase]: For 5521/5680 co-relation queries the response was YES. [2024-10-11 16:52:02,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43255 conditions, 30419 events. 4605/30419 cut-off events. For 5521/5680 co-relation queries the response was YES. Maximal size of possible extension queue 752. Compared 434511 event pairs, 1493 based on Foata normal form. 3/26051 useless extension candidates. Maximal degree in co-relation 43240. Up to 5422 conditions per place. [2024-10-11 16:52:03,117 INFO L140 encePairwiseOnDemand]: 197/218 looper letters, 94 selfloop transitions, 15 changer transitions 0/282 dead transitions. [2024-10-11 16:52:03,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 282 transitions, 1305 flow [2024-10-11 16:52:03,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:52:03,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:52:03,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 543 transitions. [2024-10-11 16:52:03,119 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8302752293577982 [2024-10-11 16:52:03,119 INFO L175 Difference]: Start difference. First operand has 210 places, 231 transitions, 764 flow. Second operand 3 states and 543 transitions. [2024-10-11 16:52:03,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 282 transitions, 1305 flow [2024-10-11 16:52:03,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 282 transitions, 1305 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:52:03,134 INFO L231 Difference]: Finished difference. Result has 214 places, 246 transitions, 896 flow [2024-10-11 16:52:03,134 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=896, PETRI_PLACES=214, PETRI_TRANSITIONS=246} [2024-10-11 16:52:03,136 INFO L277 CegarLoopForPetriNet]: 210 programPoint places, 4 predicate places. [2024-10-11 16:52:03,137 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 246 transitions, 896 flow [2024-10-11 16:52:03,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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) [2024-10-11 16:52:03,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:52:03,138 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:52:03,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 16:52:03,138 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2024-10-11 16:52:03,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:52:03,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1541511447, now seen corresponding path program 1 times [2024-10-11 16:52:03,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:52:03,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923566127] [2024-10-11 16:52:03,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:52:03,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:52:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:52:03,146 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:52:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:52:03,162 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:52:03,163 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:52:03,163 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 49 remaining) [2024-10-11 16:52:03,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (47 of 49 remaining) [2024-10-11 16:52:03,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (46 of 49 remaining) [2024-10-11 16:52:03,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (45 of 49 remaining) [2024-10-11 16:52:03,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (44 of 49 remaining) [2024-10-11 16:52:03,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (43 of 49 remaining) [2024-10-11 16:52:03,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (42 of 49 remaining) [2024-10-11 16:52:03,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (41 of 49 remaining) [2024-10-11 16:52:03,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (40 of 49 remaining) [2024-10-11 16:52:03,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (39 of 49 remaining) [2024-10-11 16:52:03,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (38 of 49 remaining) [2024-10-11 16:52:03,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (37 of 49 remaining) [2024-10-11 16:52:03,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (36 of 49 remaining) [2024-10-11 16:52:03,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (35 of 49 remaining) [2024-10-11 16:52:03,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (34 of 49 remaining) [2024-10-11 16:52:03,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (33 of 49 remaining) [2024-10-11 16:52:03,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (32 of 49 remaining) [2024-10-11 16:52:03,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (31 of 49 remaining) [2024-10-11 16:52:03,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (30 of 49 remaining) [2024-10-11 16:52:03,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (29 of 49 remaining) [2024-10-11 16:52:03,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (28 of 49 remaining) [2024-10-11 16:52:03,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (27 of 49 remaining) [2024-10-11 16:52:03,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (26 of 49 remaining) [2024-10-11 16:52:03,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (25 of 49 remaining) [2024-10-11 16:52:03,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (24 of 49 remaining) [2024-10-11 16:52:03,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 49 remaining) [2024-10-11 16:52:03,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 49 remaining) [2024-10-11 16:52:03,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 49 remaining) [2024-10-11 16:52:03,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 49 remaining) [2024-10-11 16:52:03,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 49 remaining) [2024-10-11 16:52:03,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 49 remaining) [2024-10-11 16:52:03,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (17 of 49 remaining) [2024-10-11 16:52:03,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (16 of 49 remaining) [2024-10-11 16:52:03,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (15 of 49 remaining) [2024-10-11 16:52:03,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (14 of 49 remaining) [2024-10-11 16:52:03,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (13 of 49 remaining) [2024-10-11 16:52:03,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (12 of 49 remaining) [2024-10-11 16:52:03,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 49 remaining) [2024-10-11 16:52:03,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 49 remaining) [2024-10-11 16:52:03,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 49 remaining) [2024-10-11 16:52:03,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 49 remaining) [2024-10-11 16:52:03,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 49 remaining) [2024-10-11 16:52:03,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 49 remaining) [2024-10-11 16:52:03,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 49 remaining) [2024-10-11 16:52:03,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (4 of 49 remaining) [2024-10-11 16:52:03,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (3 of 49 remaining) [2024-10-11 16:52:03,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 49 remaining) [2024-10-11 16:52:03,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (1 of 49 remaining) [2024-10-11 16:52:03,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (0 of 49 remaining) [2024-10-11 16:52:03,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 16:52:03,171 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-11 16:52:03,173 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:52:03,173 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-11 16:52:03,218 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:52:03,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 270 places, 280 transitions, 578 flow [2024-10-11 16:52:03,282 INFO L124 PetriNetUnfolderBase]: 32/523 cut-off events. [2024-10-11 16:52:03,283 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-11 16:52:03,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 523 events. 32/523 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2683 event pairs, 0 based on Foata normal form. 0/403 useless extension candidates. Maximal degree in co-relation 384. Up to 8 conditions per place. [2024-10-11 16:52:03,287 INFO L82 GeneralOperation]: Start removeDead. Operand has 270 places, 280 transitions, 578 flow [2024-10-11 16:52:03,295 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 270 places, 280 transitions, 578 flow [2024-10-11 16:52:03,297 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:52:03,298 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;@8758ffe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:52:03,299 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-10-11 16:52:03,301 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:52:03,304 INFO L124 PetriNetUnfolderBase]: 1/27 cut-off events. [2024-10-11 16:52:03,304 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:52:03,304 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:52:03,304 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:52:03,305 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2024-10-11 16:52:03,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:52:03,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1351465416, now seen corresponding path program 1 times [2024-10-11 16:52:03,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:52:03,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401384713] [2024-10-11 16:52:03,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:52:03,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:52:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:52:03,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:52:03,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:52:03,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401384713] [2024-10-11 16:52:03,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401384713] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:52:03,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:52:03,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:52:03,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262609453] [2024-10-11 16:52:03,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:52:03,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 16:52:03,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:52:03,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 16:52:03,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 16:52:03,323 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 280 [2024-10-11 16:52:03,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 280 transitions, 578 flow. Second operand has 2 states, 2 states have (on average 237.0) internal successors, (474), 2 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:52:03,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:52:03,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 280 [2024-10-11 16:52:03,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:52:03,458 INFO L124 PetriNetUnfolderBase]: 53/1407 cut-off events. [2024-10-11 16:52:03,458 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-10-11 16:52:03,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1492 conditions, 1407 events. 53/1407 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 11149 event pairs, 27 based on Foata normal form. 116/1271 useless extension candidates. Maximal degree in co-relation 811. Up to 57 conditions per place. [2024-10-11 16:52:03,475 INFO L140 encePairwiseOnDemand]: 247/280 looper letters, 7 selfloop transitions, 0 changer transitions 0/239 dead transitions. [2024-10-11 16:52:03,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 239 transitions, 510 flow [2024-10-11 16:52:03,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 16:52:03,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 16:52:03,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 512 transitions. [2024-10-11 16:52:03,477 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9142857142857143 [2024-10-11 16:52:03,478 INFO L175 Difference]: Start difference. First operand has 270 places, 280 transitions, 578 flow. Second operand 2 states and 512 transitions. [2024-10-11 16:52:03,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 239 transitions, 510 flow [2024-10-11 16:52:03,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 239 transitions, 508 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-11 16:52:03,481 INFO L231 Difference]: Finished difference. Result has 243 places, 239 transitions, 494 flow [2024-10-11 16:52:03,481 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=494, PETRI_PLACES=243, PETRI_TRANSITIONS=239} [2024-10-11 16:52:03,482 INFO L277 CegarLoopForPetriNet]: 270 programPoint places, -27 predicate places. [2024-10-11 16:52:03,482 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 239 transitions, 494 flow [2024-10-11 16:52:03,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 237.0) internal successors, (474), 2 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:52:03,483 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:52:03,483 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:52:03,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 16:52:03,483 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2024-10-11 16:52:03,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:52:03,483 INFO L85 PathProgramCache]: Analyzing trace with hash -354017468, now seen corresponding path program 1 times [2024-10-11 16:52:03,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:52:03,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048013315] [2024-10-11 16:52:03,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:52:03,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:52:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:52:03,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:52:03,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:52:03,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048013315] [2024-10-11 16:52:03,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048013315] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:52:03,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:52:03,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 16:52:03,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905211958] [2024-10-11 16:52:03,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:52:03,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 16:52:03,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:52:03,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 16:52:03,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:52:03,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 280 [2024-10-11 16:52:03,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 239 transitions, 494 flow. Second operand has 6 states, 6 states have (on average 227.33333333333334) internal successors, (1364), 6 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:52:03,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:52:03,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 280 [2024-10-11 16:52:03,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:52:04,670 INFO L124 PetriNetUnfolderBase]: 444/7105 cut-off events. [2024-10-11 16:52:04,670 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-10-11 16:52:04,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7729 conditions, 7105 events. 444/7105 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 81815 event pairs, 131 based on Foata normal form. 0/5860 useless extension candidates. Maximal degree in co-relation 7723. Up to 442 conditions per place. [2024-10-11 16:52:04,722 INFO L140 encePairwiseOnDemand]: 270/280 looper letters, 20 selfloop transitions, 18 changer transitions 0/260 dead transitions. [2024-10-11 16:52:04,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 260 transitions, 612 flow [2024-10-11 16:52:04,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 16:52:04,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 16:52:04,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1395 transitions. [2024-10-11 16:52:04,725 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8303571428571429 [2024-10-11 16:52:04,725 INFO L175 Difference]: Start difference. First operand has 243 places, 239 transitions, 494 flow. Second operand 6 states and 1395 transitions. [2024-10-11 16:52:04,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 260 transitions, 612 flow [2024-10-11 16:52:04,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 260 transitions, 612 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:52:04,728 INFO L231 Difference]: Finished difference. Result has 253 places, 257 transitions, 622 flow [2024-10-11 16:52:04,728 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=622, PETRI_PLACES=253, PETRI_TRANSITIONS=257} [2024-10-11 16:52:04,729 INFO L277 CegarLoopForPetriNet]: 270 programPoint places, -17 predicate places. [2024-10-11 16:52:04,729 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 257 transitions, 622 flow [2024-10-11 16:52:04,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 227.33333333333334) internal successors, (1364), 6 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:52:04,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:52:04,730 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] [2024-10-11 16:52:04,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 16:52:04,730 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2024-10-11 16:52:04,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:52:04,731 INFO L85 PathProgramCache]: Analyzing trace with hash 908656716, now seen corresponding path program 1 times [2024-10-11 16:52:04,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:52:04,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852250093] [2024-10-11 16:52:04,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:52:04,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:52:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:52:04,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:52:04,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:52:04,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852250093] [2024-10-11 16:52:04,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852250093] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:52:04,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:52:04,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 16:52:04,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614766802] [2024-10-11 16:52:04,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:52:04,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 16:52:04,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:52:04,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 16:52:04,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:52:05,035 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 280 [2024-10-11 16:52:05,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 257 transitions, 622 flow. Second operand has 6 states, 6 states have (on average 229.33333333333334) internal successors, (1376), 6 states have internal predecessors, (1376), 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) [2024-10-11 16:52:05,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:52:05,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 280 [2024-10-11 16:52:05,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:52:07,763 INFO L124 PetriNetUnfolderBase]: 1843/18400 cut-off events. [2024-10-11 16:52:07,764 INFO L125 PetriNetUnfolderBase]: For 2485/2593 co-relation queries the response was YES. [2024-10-11 16:52:07,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23689 conditions, 18400 events. 1843/18400 cut-off events. For 2485/2593 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 249960 event pairs, 169 based on Foata normal form. 0/15321 useless extension candidates. Maximal degree in co-relation 23678. Up to 1595 conditions per place. [2024-10-11 16:52:07,928 INFO L140 encePairwiseOnDemand]: 270/280 looper letters, 38 selfloop transitions, 50 changer transitions 0/318 dead transitions. [2024-10-11 16:52:07,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 318 transitions, 1104 flow [2024-10-11 16:52:07,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 16:52:07,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 16:52:07,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1413 transitions. [2024-10-11 16:52:07,931 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8410714285714286 [2024-10-11 16:52:07,931 INFO L175 Difference]: Start difference. First operand has 253 places, 257 transitions, 622 flow. Second operand 6 states and 1413 transitions. [2024-10-11 16:52:07,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 318 transitions, 1104 flow [2024-10-11 16:52:07,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 318 transitions, 1104 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:52:07,942 INFO L231 Difference]: Finished difference. Result has 263 places, 307 transitions, 1102 flow [2024-10-11 16:52:07,943 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1102, PETRI_PLACES=263, PETRI_TRANSITIONS=307} [2024-10-11 16:52:07,945 INFO L277 CegarLoopForPetriNet]: 270 programPoint places, -7 predicate places. [2024-10-11 16:52:07,945 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 307 transitions, 1102 flow [2024-10-11 16:52:07,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 229.33333333333334) internal successors, (1376), 6 states have internal predecessors, (1376), 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) [2024-10-11 16:52:07,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:52:07,946 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] [2024-10-11 16:52:07,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 16:52:07,946 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2024-10-11 16:52:07,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:52:07,946 INFO L85 PathProgramCache]: Analyzing trace with hash -908341002, now seen corresponding path program 1 times [2024-10-11 16:52:07,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:52:07,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126083579] [2024-10-11 16:52:07,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:52:07,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:52:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:52:08,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:52:08,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:52:08,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126083579] [2024-10-11 16:52:08,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126083579] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:52:08,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:52:08,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:52:08,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96274122] [2024-10-11 16:52:08,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:52:08,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:52:08,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:52:08,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:52:08,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:52:08,225 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 280 [2024-10-11 16:52:08,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 307 transitions, 1102 flow. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 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) [2024-10-11 16:52:08,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:52:08,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 280 [2024-10-11 16:52:08,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand