./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e2d1ca14c91be6e836759580a015ed2d4b9eb8ea9888f9f925ea579405b630f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 15:27:29,517 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 15:27:29,607 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-24 15:27:29,611 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 15:27:29,612 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 15:27:29,638 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 15:27:29,641 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 15:27:29,641 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 15:27:29,642 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 15:27:29,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 15:27:29,643 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 15:27:29,643 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 15:27:29,643 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 15:27:29,644 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 15:27:29,646 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 15:27:29,646 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 15:27:29,647 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 15:27:29,650 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 15:27:29,650 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 15:27:29,650 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 15:27:29,650 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 15:27:29,651 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 15:27:29,652 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-24 15:27:29,652 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 15:27:29,652 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 15:27:29,652 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 15:27:29,653 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 15:27:29,653 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 15:27:29,653 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 15:27:29,654 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 15:27:29,654 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 15:27:29,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 15:27:29,655 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 15:27:29,655 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 15:27:29,655 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 15:27:29,655 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 15:27:29,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 15:27:29,656 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 15:27:29,656 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 15:27:29,657 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 15:27:29,657 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 15:27:29,657 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e2d1ca14c91be6e836759580a015ed2d4b9eb8ea9888f9f925ea579405b630f [2024-10-24 15:27:29,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 15:27:29,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 15:27:29,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 15:27:29,953 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 15:27:29,953 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 15:27:29,955 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2024-10-24 15:27:31,470 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 15:27:31,750 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 15:27:31,750 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2024-10-24 15:27:31,776 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1ec95d23/276141f9fdf14db5826513d8ffb75947/FLAG9ccc4657a [2024-10-24 15:27:31,790 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1ec95d23/276141f9fdf14db5826513d8ffb75947 [2024-10-24 15:27:31,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 15:27:31,794 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 15:27:31,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 15:27:31,795 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 15:27:31,803 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 15:27:31,804 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:27:31" (1/1) ... [2024-10-24 15:27:31,805 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@290bf5f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:31, skipping insertion in model container [2024-10-24 15:27:31,805 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:27:31" (1/1) ... [2024-10-24 15:27:31,856 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 15:27:32,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 15:27:32,303 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 15:27:32,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 15:27:32,426 INFO L204 MainTranslator]: Completed translation [2024-10-24 15:27:32,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:32 WrapperNode [2024-10-24 15:27:32,427 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 15:27:32,428 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 15:27:32,428 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 15:27:32,428 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 15:27:32,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:32" (1/1) ... [2024-10-24 15:27:32,472 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:32" (1/1) ... [2024-10-24 15:27:32,528 INFO L138 Inliner]: procedures = 252, calls = 52, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 174 [2024-10-24 15:27:32,529 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 15:27:32,530 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 15:27:32,531 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 15:27:32,531 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 15:27:32,541 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:32" (1/1) ... [2024-10-24 15:27:32,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:32" (1/1) ... [2024-10-24 15:27:32,550 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:32" (1/1) ... [2024-10-24 15:27:32,550 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:32" (1/1) ... [2024-10-24 15:27:32,564 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:32" (1/1) ... [2024-10-24 15:27:32,572 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:32" (1/1) ... [2024-10-24 15:27:32,578 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:32" (1/1) ... [2024-10-24 15:27:32,580 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:32" (1/1) ... [2024-10-24 15:27:32,587 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 15:27:32,592 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 15:27:32,592 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 15:27:32,592 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 15:27:32,593 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:32" (1/1) ... [2024-10-24 15:27:32,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 15:27:32,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:27:32,633 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 15:27:32,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 15:27:32,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 15:27:32,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 15:27:32,692 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 15:27:32,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-24 15:27:32,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-24 15:27:32,692 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 15:27:32,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 15:27:32,692 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-24 15:27:32,693 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-24 15:27:32,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-24 15:27:32,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 15:27:32,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 15:27:32,697 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 15:27:32,839 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 15:27:32,842 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 15:27:33,161 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 15:27:33,161 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 15:27:33,226 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 15:27:33,226 INFO L314 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-24 15:27:33,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:27:33 BoogieIcfgContainer [2024-10-24 15:27:33,227 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 15:27:33,230 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 15:27:33,230 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 15:27:33,235 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 15:27:33,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:27:31" (1/3) ... [2024-10-24 15:27:33,236 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e796598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:27:33, skipping insertion in model container [2024-10-24 15:27:33,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:32" (2/3) ... [2024-10-24 15:27:33,237 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e796598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:27:33, skipping insertion in model container [2024-10-24 15:27:33,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:27:33" (3/3) ... [2024-10-24 15:27:33,239 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2024-10-24 15:27:33,257 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 15:27:33,258 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2024-10-24 15:27:33,258 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 15:27:33,334 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-24 15:27:33,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 171 transitions, 349 flow [2024-10-24 15:27:33,483 INFO L124 PetriNetUnfolderBase]: 19/240 cut-off events. [2024-10-24 15:27:33,487 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 15:27:33,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 240 events. 19/240 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 728 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 132. Up to 4 conditions per place. [2024-10-24 15:27:33,501 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 171 transitions, 349 flow [2024-10-24 15:27:33,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 171 transitions, 349 flow [2024-10-24 15:27:33,526 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:27:33,535 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;@1bd8dd83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:27:33,535 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-10-24 15:27:33,554 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:27:33,555 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-10-24 15:27:33,555 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:27:33,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:33,556 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:27:33,557 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2024-10-24 15:27:33,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:33,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1107728515, now seen corresponding path program 1 times [2024-10-24 15:27:33,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:33,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742990142] [2024-10-24 15:27:33,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:33,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:33,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:27:33,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:27:33,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742990142] [2024-10-24 15:27:33,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742990142] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:27:33,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:27:33,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 15:27:33,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822198975] [2024-10-24 15:27:33,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:27:33,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:27:33,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:27:33,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:27:33,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:27:34,009 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 171 [2024-10-24 15:27:34,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 171 transitions, 349 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:27:34,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:27:34,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 171 [2024-10-24 15:27:34,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:27:34,218 INFO L124 PetriNetUnfolderBase]: 80/760 cut-off events. [2024-10-24 15:27:34,219 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-24 15:27:34,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 949 conditions, 760 events. 80/760 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4126 event pairs, 72 based on Foata normal form. 77/757 useless extension candidates. Maximal degree in co-relation 872. Up to 174 conditions per place. [2024-10-24 15:27:34,230 INFO L140 encePairwiseOnDemand]: 156/171 looper letters, 28 selfloop transitions, 2 changer transitions 0/165 dead transitions. [2024-10-24 15:27:34,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 165 transitions, 397 flow [2024-10-24 15:27:34,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:27:34,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:27:34,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2024-10-24 15:27:34,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8927875243664717 [2024-10-24 15:27:34,247 INFO L175 Difference]: Start difference. First operand has 161 places, 171 transitions, 349 flow. Second operand 3 states and 458 transitions. [2024-10-24 15:27:34,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 165 transitions, 397 flow [2024-10-24 15:27:34,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 165 transitions, 397 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 15:27:34,257 INFO L231 Difference]: Finished difference. Result has 162 places, 157 transitions, 329 flow [2024-10-24 15:27:34,260 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=329, PETRI_PLACES=162, PETRI_TRANSITIONS=157} [2024-10-24 15:27:34,266 INFO L277 CegarLoopForPetriNet]: 161 programPoint places, 1 predicate places. [2024-10-24 15:27:34,267 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 157 transitions, 329 flow [2024-10-24 15:27:34,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:27:34,268 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:34,269 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:27:34,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 15:27:34,269 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2024-10-24 15:27:34,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:34,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1011728590, now seen corresponding path program 1 times [2024-10-24 15:27:34,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:34,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685895890] [2024-10-24 15:27:34,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:34,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:27:34,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:27:34,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685895890] [2024-10-24 15:27:34,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685895890] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:27:34,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:27:34,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:27:34,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385531610] [2024-10-24 15:27:34,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:27:34,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:27:34,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:27:34,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:27:34,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:27:35,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 171 [2024-10-24 15:27:35,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 157 transitions, 329 flow. Second operand has 6 states, 6 states have (on average 125.5) internal successors, (753), 6 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:27:35,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:27:35,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 171 [2024-10-24 15:27:35,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:27:35,275 INFO L124 PetriNetUnfolderBase]: 160/1001 cut-off events. [2024-10-24 15:27:35,276 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-10-24 15:27:35,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1394 conditions, 1001 events. 160/1001 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 6331 event pairs, 119 based on Foata normal form. 0/914 useless extension candidates. Maximal degree in co-relation 1302. Up to 267 conditions per place. [2024-10-24 15:27:35,287 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 60 selfloop transitions, 5 changer transitions 0/188 dead transitions. [2024-10-24 15:27:35,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 188 transitions, 521 flow [2024-10-24 15:27:35,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 15:27:35,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 15:27:35,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 810 transitions. [2024-10-24 15:27:35,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7894736842105263 [2024-10-24 15:27:35,292 INFO L175 Difference]: Start difference. First operand has 162 places, 157 transitions, 329 flow. Second operand 6 states and 810 transitions. [2024-10-24 15:27:35,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 188 transitions, 521 flow [2024-10-24 15:27:35,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 188 transitions, 517 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 15:27:35,299 INFO L231 Difference]: Finished difference. Result has 164 places, 156 transitions, 333 flow [2024-10-24 15:27:35,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=333, PETRI_PLACES=164, PETRI_TRANSITIONS=156} [2024-10-24 15:27:35,301 INFO L277 CegarLoopForPetriNet]: 161 programPoint places, 3 predicate places. [2024-10-24 15:27:35,301 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 156 transitions, 333 flow [2024-10-24 15:27:35,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.5) internal successors, (753), 6 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:27:35,302 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:35,303 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:27:35,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 15:27:35,303 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2024-10-24 15:27:35,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:35,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1662768743, now seen corresponding path program 1 times [2024-10-24 15:27:35,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:35,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2562514] [2024-10-24 15:27:35,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:35,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:27:35,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:27:35,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2562514] [2024-10-24 15:27:35,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2562514] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:27:35,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:27:35,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:27:35,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006478943] [2024-10-24 15:27:35,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:27:35,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:27:35,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:27:35,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:27:35,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:27:35,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 171 [2024-10-24 15:27:35,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 156 transitions, 333 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:27:35,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:27:35,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 171 [2024-10-24 15:27:35,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:27:35,572 INFO L124 PetriNetUnfolderBase]: 114/1094 cut-off events. [2024-10-24 15:27:35,572 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-24 15:27:35,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1378 conditions, 1094 events. 114/1094 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 7116 event pairs, 28 based on Foata normal form. 0/986 useless extension candidates. Maximal degree in co-relation 1308. Up to 133 conditions per place. [2024-10-24 15:27:35,579 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 33 selfloop transitions, 3 changer transitions 0/172 dead transitions. [2024-10-24 15:27:35,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 172 transitions, 440 flow [2024-10-24 15:27:35,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:27:35,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:27:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2024-10-24 15:27:35,582 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8791423001949318 [2024-10-24 15:27:35,583 INFO L175 Difference]: Start difference. First operand has 164 places, 156 transitions, 333 flow. Second operand 3 states and 451 transitions. [2024-10-24 15:27:35,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 172 transitions, 440 flow [2024-10-24 15:27:35,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 172 transitions, 430 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 15:27:35,588 INFO L231 Difference]: Finished difference. Result has 163 places, 158 transitions, 345 flow [2024-10-24 15:27:35,588 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=345, PETRI_PLACES=163, PETRI_TRANSITIONS=158} [2024-10-24 15:27:35,589 INFO L277 CegarLoopForPetriNet]: 161 programPoint places, 2 predicate places. [2024-10-24 15:27:35,589 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 158 transitions, 345 flow [2024-10-24 15:27:35,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:27:35,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:35,592 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:27:35,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 15:27:35,592 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2024-10-24 15:27:35,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:35,593 INFO L85 PathProgramCache]: Analyzing trace with hash -755907850, now seen corresponding path program 1 times [2024-10-24 15:27:35,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:35,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571859973] [2024-10-24 15:27:35,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:35,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:35,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:27:35,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:27:35,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571859973] [2024-10-24 15:27:35,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571859973] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:27:35,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213461484] [2024-10-24 15:27:35,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:35,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:27:35,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:27:35,706 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:27:35,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 15:27:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:35,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 15:27:35,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:27:35,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 15:27:35,843 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 15:27:35,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213461484] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:27:35,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 15:27:35,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-24 15:27:35,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829047258] [2024-10-24 15:27:35,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:27:35,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:27:35,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:27:35,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:27:35,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:27:35,856 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 171 [2024-10-24 15:27:35,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 158 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:27:35,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:27:35,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 171 [2024-10-24 15:27:35,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:27:36,070 INFO L124 PetriNetUnfolderBase]: 183/1447 cut-off events. [2024-10-24 15:27:36,071 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-10-24 15:27:36,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1924 conditions, 1447 events. 183/1447 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 10346 event pairs, 136 based on Foata normal form. 0/1289 useless extension candidates. Maximal degree in co-relation 1853. Up to 345 conditions per place. [2024-10-24 15:27:36,078 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 31 selfloop transitions, 5 changer transitions 0/169 dead transitions. [2024-10-24 15:27:36,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 169 transitions, 443 flow [2024-10-24 15:27:36,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:27:36,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:27:36,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 438 transitions. [2024-10-24 15:27:36,081 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8538011695906432 [2024-10-24 15:27:36,081 INFO L175 Difference]: Start difference. First operand has 163 places, 158 transitions, 345 flow. Second operand 3 states and 438 transitions. [2024-10-24 15:27:36,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 169 transitions, 443 flow [2024-10-24 15:27:36,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 169 transitions, 435 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 15:27:36,086 INFO L231 Difference]: Finished difference. Result has 165 places, 161 transitions, 375 flow [2024-10-24 15:27:36,086 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=375, PETRI_PLACES=165, PETRI_TRANSITIONS=161} [2024-10-24 15:27:36,087 INFO L277 CegarLoopForPetriNet]: 161 programPoint places, 4 predicate places. [2024-10-24 15:27:36,087 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 161 transitions, 375 flow [2024-10-24 15:27:36,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:27:36,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:36,088 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:27:36,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 15:27:36,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:27:36,293 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2024-10-24 15:27:36,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:36,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1626922756, now seen corresponding path program 1 times [2024-10-24 15:27:36,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:36,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776444172] [2024-10-24 15:27:36,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:36,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:27:36,320 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:27:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:27:36,354 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:27:36,355 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:27:36,356 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-10-24 15:27:36,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2024-10-24 15:27:36,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2024-10-24 15:27:36,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2024-10-24 15:27:36,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2024-10-24 15:27:36,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2024-10-24 15:27:36,359 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2024-10-24 15:27:36,359 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2024-10-24 15:27:36,359 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2024-10-24 15:27:36,359 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2024-10-24 15:27:36,359 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2024-10-24 15:27:36,360 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2024-10-24 15:27:36,360 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2024-10-24 15:27:36,360 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2024-10-24 15:27:36,360 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2024-10-24 15:27:36,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 15:27:36,361 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-24 15:27:36,363 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:27:36,363 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-24 15:27:36,392 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 15:27:36,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 233 transitions, 482 flow [2024-10-24 15:27:36,448 INFO L124 PetriNetUnfolderBase]: 34/399 cut-off events. [2024-10-24 15:27:36,448 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-24 15:27:36,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 399 events. 34/399 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1447 event pairs, 0 based on Foata normal form. 0/338 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2024-10-24 15:27:36,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 233 transitions, 482 flow [2024-10-24 15:27:36,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 233 transitions, 482 flow [2024-10-24 15:27:36,459 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:27:36,460 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;@1bd8dd83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:27:36,460 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-10-24 15:27:36,464 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:27:36,466 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-10-24 15:27:36,466 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:27:36,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:36,466 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:27:36,466 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-24 15:27:36,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:36,467 INFO L85 PathProgramCache]: Analyzing trace with hash -2005245466, now seen corresponding path program 1 times [2024-10-24 15:27:36,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:36,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597587074] [2024-10-24 15:27:36,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:36,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:36,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:27:36,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:27:36,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597587074] [2024-10-24 15:27:36,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597587074] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:27:36,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:27:36,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 15:27:36,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136888393] [2024-10-24 15:27:36,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:27:36,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:27:36,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:27:36,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:27:36,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:27:36,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 233 [2024-10-24 15:27:36,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 233 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:27:36,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:27:36,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 233 [2024-10-24 15:27:36,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:27:37,815 INFO L124 PetriNetUnfolderBase]: 1626/8204 cut-off events. [2024-10-24 15:27:37,816 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2024-10-24 15:27:37,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10895 conditions, 8204 events. 1626/8204 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 86607 event pairs, 1608 based on Foata normal form. 1200/8606 useless extension candidates. Maximal degree in co-relation 9757. Up to 2629 conditions per place. [2024-10-24 15:27:37,871 INFO L140 encePairwiseOnDemand]: 212/233 looper letters, 39 selfloop transitions, 2 changer transitions 0/222 dead transitions. [2024-10-24 15:27:37,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 222 transitions, 542 flow [2024-10-24 15:27:37,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:27:37,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:27:37,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2024-10-24 15:27:37,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.876967095851216 [2024-10-24 15:27:37,874 INFO L175 Difference]: Start difference. First operand has 218 places, 233 transitions, 482 flow. Second operand 3 states and 613 transitions. [2024-10-24 15:27:37,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 222 transitions, 542 flow [2024-10-24 15:27:37,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 222 transitions, 542 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 15:27:37,882 INFO L231 Difference]: Finished difference. Result has 219 places, 214 transitions, 454 flow [2024-10-24 15:27:37,883 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=219, PETRI_TRANSITIONS=214} [2024-10-24 15:27:37,884 INFO L277 CegarLoopForPetriNet]: 218 programPoint places, 1 predicate places. [2024-10-24 15:27:37,884 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 214 transitions, 454 flow [2024-10-24 15:27:37,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:27:37,885 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:37,885 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:27:37,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 15:27:37,885 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-24 15:27:37,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:37,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1786372631, now seen corresponding path program 1 times [2024-10-24 15:27:37,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:37,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991919185] [2024-10-24 15:27:37,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:37,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:38,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:27:38,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:27:38,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991919185] [2024-10-24 15:27:38,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991919185] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:27:38,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:27:38,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:27:38,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902435680] [2024-10-24 15:27:38,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:27:38,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:27:38,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:27:38,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:27:38,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:27:38,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 233 [2024-10-24 15:27:38,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 214 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 171.5) internal successors, (1029), 6 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:27:38,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:27:38,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 233 [2024-10-24 15:27:38,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:27:40,066 INFO L124 PetriNetUnfolderBase]: 3186/12501 cut-off events. [2024-10-24 15:27:40,067 INFO L125 PetriNetUnfolderBase]: For 205/232 co-relation queries the response was YES. [2024-10-24 15:27:40,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17820 conditions, 12501 events. 3186/12501 cut-off events. For 205/232 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 137058 event pairs, 1571 based on Foata normal form. 0/11360 useless extension candidates. Maximal degree in co-relation 17660. Up to 3779 conditions per place. [2024-10-24 15:27:40,145 INFO L140 encePairwiseOnDemand]: 227/233 looper letters, 102 selfloop transitions, 6 changer transitions 0/277 dead transitions. [2024-10-24 15:27:40,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 277 transitions, 796 flow [2024-10-24 15:27:40,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 15:27:40,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 15:27:40,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1128 transitions. [2024-10-24 15:27:40,149 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8068669527896996 [2024-10-24 15:27:40,149 INFO L175 Difference]: Start difference. First operand has 219 places, 214 transitions, 454 flow. Second operand 6 states and 1128 transitions. [2024-10-24 15:27:40,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 277 transitions, 796 flow [2024-10-24 15:27:40,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 277 transitions, 794 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 15:27:40,154 INFO L231 Difference]: Finished difference. Result has 222 places, 213 transitions, 462 flow [2024-10-24 15:27:40,155 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=462, PETRI_PLACES=222, PETRI_TRANSITIONS=213} [2024-10-24 15:27:40,156 INFO L277 CegarLoopForPetriNet]: 218 programPoint places, 4 predicate places. [2024-10-24 15:27:40,156 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 213 transitions, 462 flow [2024-10-24 15:27:40,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 171.5) internal successors, (1029), 6 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:27:40,157 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:40,157 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:27:40,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 15:27:40,157 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-24 15:27:40,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:40,158 INFO L85 PathProgramCache]: Analyzing trace with hash 831685877, now seen corresponding path program 1 times [2024-10-24 15:27:40,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:40,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507374890] [2024-10-24 15:27:40,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:40,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:40,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:27:40,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:27:40,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507374890] [2024-10-24 15:27:40,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507374890] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:27:40,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:27:40,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:27:40,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915123953] [2024-10-24 15:27:40,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:27:40,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:27:40,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:27:40,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:27:40,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:27:40,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 233 [2024-10-24 15:27:40,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 213 transitions, 462 flow. Second operand has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:27:40,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:27:40,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 233 [2024-10-24 15:27:40,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:27:42,232 INFO L124 PetriNetUnfolderBase]: 3293/15658 cut-off events. [2024-10-24 15:27:42,233 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2024-10-24 15:27:42,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21168 conditions, 15658 events. 3293/15658 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 186199 event pairs, 880 based on Foata normal form. 0/14062 useless extension candidates. Maximal degree in co-relation 19742. Up to 3072 conditions per place. [2024-10-24 15:27:42,431 INFO L140 encePairwiseOnDemand]: 226/233 looper letters, 58 selfloop transitions, 5 changer transitions 0/243 dead transitions. [2024-10-24 15:27:42,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 243 transitions, 659 flow [2024-10-24 15:27:42,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:27:42,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:27:42,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2024-10-24 15:27:42,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8698140200286123 [2024-10-24 15:27:42,436 INFO L175 Difference]: Start difference. First operand has 222 places, 213 transitions, 462 flow. Second operand 3 states and 608 transitions. [2024-10-24 15:27:42,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 243 transitions, 659 flow [2024-10-24 15:27:42,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 243 transitions, 647 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 15:27:42,443 INFO L231 Difference]: Finished difference. Result has 221 places, 218 transitions, 494 flow [2024-10-24 15:27:42,443 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=494, PETRI_PLACES=221, PETRI_TRANSITIONS=218} [2024-10-24 15:27:42,445 INFO L277 CegarLoopForPetriNet]: 218 programPoint places, 3 predicate places. [2024-10-24 15:27:42,445 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 218 transitions, 494 flow [2024-10-24 15:27:42,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:27:42,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:42,448 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:27:42,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 15:27:42,449 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-24 15:27:42,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:42,449 INFO L85 PathProgramCache]: Analyzing trace with hash -297601085, now seen corresponding path program 1 times [2024-10-24 15:27:42,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:42,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75789214] [2024-10-24 15:27:42,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:42,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:27:42,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:27:42,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75789214] [2024-10-24 15:27:42,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75789214] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:27:42,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853095342] [2024-10-24 15:27:42,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:42,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:27:42,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:27:42,540 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:27:42,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 15:27:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:42,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 15:27:42,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:27:42,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 15:27:42,653 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 15:27:42,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853095342] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:27:42,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 15:27:42,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-24 15:27:42,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548230086] [2024-10-24 15:27:42,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:27:42,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:27:42,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:27:42,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:27:42,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:27:42,672 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 233 [2024-10-24 15:27:42,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 218 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:27:42,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:27:42,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 233 [2024-10-24 15:27:42,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:27:44,731 INFO L124 PetriNetUnfolderBase]: 4920/20847 cut-off events. [2024-10-24 15:27:44,731 INFO L125 PetriNetUnfolderBase]: For 1504/1525 co-relation queries the response was YES. [2024-10-24 15:27:44,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30243 conditions, 20847 events. 4920/20847 cut-off events. For 1504/1525 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 255624 event pairs, 3516 based on Foata normal form. 16/18724 useless extension candidates. Maximal degree in co-relation 28253. Up to 6750 conditions per place. [2024-10-24 15:27:44,862 INFO L140 encePairwiseOnDemand]: 227/233 looper letters, 52 selfloop transitions, 8 changer transitions 0/240 dead transitions. [2024-10-24 15:27:44,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 240 transitions, 670 flow [2024-10-24 15:27:44,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:27:44,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:27:44,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 593 transitions. [2024-10-24 15:27:44,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8483547925608012 [2024-10-24 15:27:44,864 INFO L175 Difference]: Start difference. First operand has 221 places, 218 transitions, 494 flow. Second operand 3 states and 593 transitions. [2024-10-24 15:27:44,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 240 transitions, 670 flow [2024-10-24 15:27:44,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 240 transitions, 656 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 15:27:44,874 INFO L231 Difference]: Finished difference. Result has 223 places, 224 transitions, 550 flow [2024-10-24 15:27:44,875 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=550, PETRI_PLACES=223, PETRI_TRANSITIONS=224} [2024-10-24 15:27:44,878 INFO L277 CegarLoopForPetriNet]: 218 programPoint places, 5 predicate places. [2024-10-24 15:27:44,878 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 224 transitions, 550 flow [2024-10-24 15:27:44,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:27:44,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:44,879 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:27:44,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 15:27:45,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-24 15:27:45,080 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-24 15:27:45,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:45,080 INFO L85 PathProgramCache]: Analyzing trace with hash -877075698, now seen corresponding path program 1 times [2024-10-24 15:27:45,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:45,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915966397] [2024-10-24 15:27:45,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:45,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:45,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:27:45,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:27:45,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915966397] [2024-10-24 15:27:45,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915966397] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:27:45,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33520746] [2024-10-24 15:27:45,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:45,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:27:45,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:27:45,174 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:27:45,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 15:27:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:45,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 15:27:45,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:27:45,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-24 15:27:45,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 15:27:45,345 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 15:27:45,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33520746] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:27:45,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 15:27:45,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-24 15:27:45,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280559269] [2024-10-24 15:27:45,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:27:45,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:27:45,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:27:45,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:27:45,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:27:45,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 233 [2024-10-24 15:27:45,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 224 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:27:45,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:27:45,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 233 [2024-10-24 15:27:45,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:27:46,537 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([757] L906-->L906-3: Formula: (and (= (store |v_#pthreadsMutex_134| |v_~#fm~0.base_25| (store (select |v_#pthreadsMutex_134| |v_~#fm~0.base_25|) |v_~#fm~0.offset_25| 0)) |v_#pthreadsMutex_133|) (= |v_t_funThread2of2ForFork0_#t~ret23#1_1| 0)) InVars {#pthreadsMutex=|v_#pthreadsMutex_134|, ~#fm~0.base=|v_~#fm~0.base_25|, ~#fm~0.offset=|v_~#fm~0.offset_25|} OutVars{#pthreadsMutex=|v_#pthreadsMutex_133|, ~#fm~0.base=|v_~#fm~0.base_25|, ~#fm~0.offset=|v_~#fm~0.offset_25|, t_funThread2of2ForFork0_#t~ret23#1=|v_t_funThread2of2ForFork0_#t~ret23#1_1|} AuxVars[] AssignedVars[#pthreadsMutex, t_funThread2of2ForFork0_#t~ret23#1][195], [Black: 223#(= |ULTIMATE.start_main_~i~0#1| 0), 406#true, 124#L906-3true, Black: 403#(= |#race~f~0| |ULTIMATE.start_main_#t~nondet29#1|), 236#true, 213#L916-12true, 135#L897-35true, Black: 231#true, 219#true, 217#true]) [2024-10-24 15:27:46,538 INFO L294 olderBase$Statistics]: this new event has 133 ancestors and is cut-off event [2024-10-24 15:27:46,538 INFO L297 olderBase$Statistics]: existing Event has 133 ancestors and is cut-off event [2024-10-24 15:27:46,538 INFO L297 olderBase$Statistics]: existing Event has 133 ancestors and is cut-off event [2024-10-24 15:27:46,538 INFO L297 olderBase$Statistics]: existing Event has 133 ancestors and is cut-off event [2024-10-24 15:27:46,587 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([757] L906-->L906-3: Formula: (and (= (store |v_#pthreadsMutex_134| |v_~#fm~0.base_25| (store (select |v_#pthreadsMutex_134| |v_~#fm~0.base_25|) |v_~#fm~0.offset_25| 0)) |v_#pthreadsMutex_133|) (= |v_t_funThread2of2ForFork0_#t~ret23#1_1| 0)) InVars {#pthreadsMutex=|v_#pthreadsMutex_134|, ~#fm~0.base=|v_~#fm~0.base_25|, ~#fm~0.offset=|v_~#fm~0.offset_25|} OutVars{#pthreadsMutex=|v_#pthreadsMutex_133|, ~#fm~0.base=|v_~#fm~0.base_25|, ~#fm~0.offset=|v_~#fm~0.offset_25|, t_funThread2of2ForFork0_#t~ret23#1=|v_t_funThread2of2ForFork0_#t~ret23#1_1|} AuxVars[] AssignedVars[#pthreadsMutex, t_funThread2of2ForFork0_#t~ret23#1][195], [Black: 223#(= |ULTIMATE.start_main_~i~0#1| 0), 406#true, 124#L906-3true, Black: 403#(= |#race~f~0| |ULTIMATE.start_main_#t~nondet29#1|), 236#true, 135#L897-35true, Black: 231#true, 11#L917-2true, 219#true, 217#true]) [2024-10-24 15:27:46,587 INFO L294 olderBase$Statistics]: this new event has 136 ancestors and is cut-off event [2024-10-24 15:27:46,587 INFO L297 olderBase$Statistics]: existing Event has 136 ancestors and is cut-off event [2024-10-24 15:27:46,587 INFO L297 olderBase$Statistics]: existing Event has 136 ancestors and is cut-off event [2024-10-24 15:27:46,587 INFO L297 olderBase$Statistics]: existing Event has 136 ancestors and is cut-off event [2024-10-24 15:27:47,018 INFO L124 PetriNetUnfolderBase]: 2270/13365 cut-off events. [2024-10-24 15:27:47,018 INFO L125 PetriNetUnfolderBase]: For 681/711 co-relation queries the response was YES. [2024-10-24 15:27:47,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18369 conditions, 13365 events. 2270/13365 cut-off events. For 681/711 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 161560 event pairs, 1274 based on Foata normal form. 49/12450 useless extension candidates. Maximal degree in co-relation 17147. Up to 3255 conditions per place. [2024-10-24 15:27:47,081 INFO L140 encePairwiseOnDemand]: 219/233 looper letters, 35 selfloop transitions, 14 changer transitions 0/244 dead transitions. [2024-10-24 15:27:47,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 244 transitions, 687 flow [2024-10-24 15:27:47,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:27:47,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:27:47,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2024-10-24 15:27:47,083 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.876967095851216 [2024-10-24 15:27:47,083 INFO L175 Difference]: Start difference. First operand has 223 places, 224 transitions, 550 flow. Second operand 3 states and 613 transitions. [2024-10-24 15:27:47,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 244 transitions, 687 flow [2024-10-24 15:27:47,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 244 transitions, 675 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 15:27:47,091 INFO L231 Difference]: Finished difference. Result has 224 places, 233 transitions, 608 flow [2024-10-24 15:27:47,092 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=608, PETRI_PLACES=224, PETRI_TRANSITIONS=233} [2024-10-24 15:27:47,092 INFO L277 CegarLoopForPetriNet]: 218 programPoint places, 6 predicate places. [2024-10-24 15:27:47,093 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 233 transitions, 608 flow [2024-10-24 15:27:47,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:27:47,093 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:47,094 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:27:47,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 15:27:47,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:27:47,295 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-24 15:27:47,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:47,295 INFO L85 PathProgramCache]: Analyzing trace with hash 414209634, now seen corresponding path program 1 times [2024-10-24 15:27:47,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:47,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304662497] [2024-10-24 15:27:47,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:47,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:47,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:27:47,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:27:47,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304662497] [2024-10-24 15:27:47,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304662497] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:27:47,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:27:47,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:27:47,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371489310] [2024-10-24 15:27:47,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:27:47,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:27:47,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:27:47,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:27:47,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:27:47,387 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 233 [2024-10-24 15:27:47,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 233 transitions, 608 flow. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:27:47,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:27:47,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 233 [2024-10-24 15:27:47,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:27:52,512 INFO L124 PetriNetUnfolderBase]: 12979/48966 cut-off events. [2024-10-24 15:27:52,512 INFO L125 PetriNetUnfolderBase]: For 9194/9580 co-relation queries the response was YES. [2024-10-24 15:27:52,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81785 conditions, 48966 events. 12979/48966 cut-off events. For 9194/9580 co-relation queries the response was YES. Maximal size of possible extension queue 1164. Compared 663524 event pairs, 4416 based on Foata normal form. 11/44685 useless extension candidates. Maximal degree in co-relation 79030. Up to 11072 conditions per place. [2024-10-24 15:27:52,823 INFO L140 encePairwiseOnDemand]: 214/233 looper letters, 92 selfloop transitions, 14 changer transitions 0/283 dead transitions. [2024-10-24 15:27:52,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 283 transitions, 995 flow [2024-10-24 15:27:52,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:27:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:27:52,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 596 transitions. [2024-10-24 15:27:52,826 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8526466380543634 [2024-10-24 15:27:52,826 INFO L175 Difference]: Start difference. First operand has 224 places, 233 transitions, 608 flow. Second operand 3 states and 596 transitions. [2024-10-24 15:27:52,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 283 transitions, 995 flow [2024-10-24 15:27:52,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 283 transitions, 967 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 15:27:52,848 INFO L231 Difference]: Finished difference. Result has 227 places, 247 transitions, 716 flow [2024-10-24 15:27:52,848 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=716, PETRI_PLACES=227, PETRI_TRANSITIONS=247} [2024-10-24 15:27:52,849 INFO L277 CegarLoopForPetriNet]: 218 programPoint places, 9 predicate places. [2024-10-24 15:27:52,849 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 247 transitions, 716 flow [2024-10-24 15:27:52,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:27:52,849 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:52,849 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:27:52,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 15:27:52,850 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-24 15:27:52,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:52,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1748315669, now seen corresponding path program 1 times [2024-10-24 15:27:52,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:52,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403920236] [2024-10-24 15:27:52,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:52,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:52,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:27:52,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:27:52,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403920236] [2024-10-24 15:27:52,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403920236] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:27:52,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:27:52,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:27:52,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288276450] [2024-10-24 15:27:52,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:27:52,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:27:52,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:27:52,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:27:52,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:27:52,926 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 233 [2024-10-24 15:27:52,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 247 transitions, 716 flow. Second operand has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:27:52,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:27:52,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 233 [2024-10-24 15:27:52,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:27:59,328 INFO L124 PetriNetUnfolderBase]: 14178/58649 cut-off events. [2024-10-24 15:27:59,329 INFO L125 PetriNetUnfolderBase]: For 20536/21747 co-relation queries the response was YES. [2024-10-24 15:27:59,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105405 conditions, 58649 events. 14178/58649 cut-off events. For 20536/21747 co-relation queries the response was YES. Maximal size of possible extension queue 1355. Compared 839936 event pairs, 8175 based on Foata normal form. 96/54237 useless extension candidates. Maximal degree in co-relation 102024. Up to 20093 conditions per place. [2024-10-24 15:27:59,794 INFO L140 encePairwiseOnDemand]: 224/233 looper letters, 82 selfloop transitions, 14 changer transitions 0/282 dead transitions. [2024-10-24 15:27:59,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 282 transitions, 1048 flow [2024-10-24 15:27:59,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:27:59,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:27:59,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 584 transitions. [2024-10-24 15:27:59,797 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8354792560801144 [2024-10-24 15:27:59,797 INFO L175 Difference]: Start difference. First operand has 227 places, 247 transitions, 716 flow. Second operand 3 states and 584 transitions. [2024-10-24 15:27:59,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 282 transitions, 1048 flow [2024-10-24 15:27:59,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 282 transitions, 1010 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 15:27:59,834 INFO L231 Difference]: Finished difference. Result has 229 places, 259 transitions, 814 flow [2024-10-24 15:27:59,835 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=814, PETRI_PLACES=229, PETRI_TRANSITIONS=259} [2024-10-24 15:27:59,836 INFO L277 CegarLoopForPetriNet]: 218 programPoint places, 11 predicate places. [2024-10-24 15:27:59,836 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 259 transitions, 814 flow [2024-10-24 15:27:59,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:27:59,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:59,837 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:27:59,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 15:27:59,837 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-24 15:27:59,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:59,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1706675992, now seen corresponding path program 1 times [2024-10-24 15:27:59,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:59,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311358886] [2024-10-24 15:27:59,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:59,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:27:59,873 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:27:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:27:59,907 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:27:59,907 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:27:59,907 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2024-10-24 15:27:59,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2024-10-24 15:27:59,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2024-10-24 15:27:59,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2024-10-24 15:27:59,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2024-10-24 15:27:59,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2024-10-24 15:27:59,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2024-10-24 15:27:59,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2024-10-24 15:27:59,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2024-10-24 15:27:59,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2024-10-24 15:27:59,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2024-10-24 15:27:59,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2024-10-24 15:27:59,912 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2024-10-24 15:27:59,913 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2024-10-24 15:27:59,913 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2024-10-24 15:27:59,913 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2024-10-24 15:27:59,913 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2024-10-24 15:27:59,913 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2024-10-24 15:27:59,914 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2024-10-24 15:27:59,914 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2024-10-24 15:27:59,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 15:27:59,914 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:27:59,915 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:27:59,915 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-24 15:27:59,968 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 15:27:59,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 295 transitions, 617 flow [2024-10-24 15:28:00,072 INFO L124 PetriNetUnfolderBase]: 54/603 cut-off events. [2024-10-24 15:28:00,073 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-24 15:28:00,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 603 events. 54/603 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2471 event pairs, 1 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 407. Up to 16 conditions per place. [2024-10-24 15:28:00,082 INFO L82 GeneralOperation]: Start removeDead. Operand has 275 places, 295 transitions, 617 flow [2024-10-24 15:28:00,089 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 275 places, 295 transitions, 617 flow [2024-10-24 15:28:00,090 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:28:00,091 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;@1bd8dd83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:28:00,091 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-10-24 15:28:00,097 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:28:00,097 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-10-24 15:28:00,097 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:28:00,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:28:00,097 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:28:00,098 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-10-24 15:28:00,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:28:00,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1501019763, now seen corresponding path program 1 times [2024-10-24 15:28:00,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:28:00,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625960105] [2024-10-24 15:28:00,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:28:00,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:28:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:28:00,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:28:00,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:28:00,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625960105] [2024-10-24 15:28:00,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625960105] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:28:00,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:28:00,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 15:28:00,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012145843] [2024-10-24 15:28:00,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:28:00,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:28:00,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:28:00,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:28:00,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:28:00,172 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 295 [2024-10-24 15:28:00,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 295 transitions, 617 flow. Second operand has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:28:00,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:28:00,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 295 [2024-10-24 15:28:00,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:28:11,330 INFO L124 PetriNetUnfolderBase]: 23208/84699 cut-off events. [2024-10-24 15:28:11,331 INFO L125 PetriNetUnfolderBase]: For 3583/3583 co-relation queries the response was YES. [2024-10-24 15:28:11,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117946 conditions, 84699 events. 23208/84699 cut-off events. For 3583/3583 co-relation queries the response was YES. Maximal size of possible extension queue 1544. Compared 1207276 event pairs, 22062 based on Foata normal form. 15274/92855 useless extension candidates. Maximal degree in co-relation 10916. Up to 32579 conditions per place. [2024-10-24 15:28:11,929 INFO L140 encePairwiseOnDemand]: 268/295 looper letters, 49 selfloop transitions, 2 changer transitions 0/278 dead transitions. [2024-10-24 15:28:11,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 278 transitions, 685 flow [2024-10-24 15:28:11,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:28:11,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:28:11,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 767 transitions. [2024-10-24 15:28:11,932 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2024-10-24 15:28:11,933 INFO L175 Difference]: Start difference. First operand has 275 places, 295 transitions, 617 flow. Second operand 3 states and 767 transitions. [2024-10-24 15:28:11,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 278 transitions, 685 flow [2024-10-24 15:28:11,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 278 transitions, 685 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 15:28:11,939 INFO L231 Difference]: Finished difference. Result has 276 places, 270 transitions, 577 flow [2024-10-24 15:28:11,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=577, PETRI_PLACES=276, PETRI_TRANSITIONS=270} [2024-10-24 15:28:11,941 INFO L277 CegarLoopForPetriNet]: 275 programPoint places, 1 predicate places. [2024-10-24 15:28:11,941 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 270 transitions, 577 flow [2024-10-24 15:28:11,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:28:11,942 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:28:11,942 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:28:11,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 15:28:11,943 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-10-24 15:28:11,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:28:11,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1015978206, now seen corresponding path program 1 times [2024-10-24 15:28:11,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:28:11,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547788950] [2024-10-24 15:28:11,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:28:11,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:28:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:28:12,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:28:12,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:28:12,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547788950] [2024-10-24 15:28:12,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547788950] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:28:12,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:28:12,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:28:12,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297735955] [2024-10-24 15:28:12,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:28:12,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:28:12,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:28:12,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:28:12,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:28:12,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 295 [2024-10-24 15:28:12,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 270 transitions, 577 flow. Second operand has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:28:12,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:28:12,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 295 [2024-10-24 15:28:12,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand