./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_51-mutexptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_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 f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 17:09:09,575 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 17:09:09,649 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-14 17:09:09,657 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 17:09:09,658 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 17:09:09,689 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 17:09:09,690 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 17:09:09,690 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 17:09:09,690 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 17:09:09,691 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 17:09:09,692 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 17:09:09,692 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 17:09:09,693 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 17:09:09,693 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 17:09:09,695 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 17:09:09,695 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 17:09:09,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 17:09:09,696 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 17:09:09,696 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 17:09:09,696 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 17:09:09,697 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 17:09:09,700 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 17:09:09,700 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-14 17:09:09,701 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 17:09:09,701 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 17:09:09,701 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 17:09:09,701 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 17:09:09,701 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 17:09:09,702 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 17:09:09,702 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 17:09:09,702 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 17:09:09,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:09:09,702 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 17:09:09,703 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 17:09:09,703 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 17:09:09,703 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 17:09:09,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 17:09:09,704 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 17:09:09,704 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 17:09:09,704 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 17:09:09,704 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 17:09:09,705 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e [2024-10-14 17:09:10,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 17:09:10,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 17:09:10,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 17:09:10,030 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 17:09:10,031 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 17:09:10,032 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2024-10-14 17:09:11,412 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 17:09:11,689 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 17:09:11,690 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2024-10-14 17:09:11,713 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91850fc84/2bb9f6147c564404ae36a82cd5e6491d/FLAG0033af8fe [2024-10-14 17:09:12,032 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91850fc84/2bb9f6147c564404ae36a82cd5e6491d [2024-10-14 17:09:12,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 17:09:12,035 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 17:09:12,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 17:09:12,036 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 17:09:12,043 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 17:09:12,044 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:09:12" (1/1) ... [2024-10-14 17:09:12,045 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61db4a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:12, skipping insertion in model container [2024-10-14 17:09:12,045 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:09:12" (1/1) ... [2024-10-14 17:09:12,088 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 17:09:12,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:09:12,458 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 17:09:12,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:09:12,552 INFO L204 MainTranslator]: Completed translation [2024-10-14 17:09:12,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:12 WrapperNode [2024-10-14 17:09:12,553 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 17:09:12,554 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 17:09:12,554 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 17:09:12,554 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 17:09:12,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:12" (1/1) ... [2024-10-14 17:09:12,584 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:12" (1/1) ... [2024-10-14 17:09:12,614 INFO L138 Inliner]: procedures = 171, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 120 [2024-10-14 17:09:12,615 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 17:09:12,617 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 17:09:12,620 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 17:09:12,620 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 17:09:12,628 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:12" (1/1) ... [2024-10-14 17:09:12,632 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:12" (1/1) ... [2024-10-14 17:09:12,636 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:12" (1/1) ... [2024-10-14 17:09:12,638 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:12" (1/1) ... [2024-10-14 17:09:12,649 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:12" (1/1) ... [2024-10-14 17:09:12,654 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:12" (1/1) ... [2024-10-14 17:09:12,656 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:12" (1/1) ... [2024-10-14 17:09:12,661 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:12" (1/1) ... [2024-10-14 17:09:12,665 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 17:09:12,669 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 17:09:12,673 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 17:09:12,673 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 17:09:12,674 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:12" (1/1) ... [2024-10-14 17:09:12,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:09:12,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:09:12,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 17:09:12,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 17:09:12,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-14 17:09:12,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-14 17:09:12,768 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 17:09:12,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 17:09:12,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 17:09:12,768 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-14 17:09:12,768 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-14 17:09:12,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 17:09:12,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-14 17:09:12,769 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 17:09:12,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 17:09:12,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 17:09:12,771 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 17:09:12,973 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 17:09:12,977 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 17:09:13,358 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 17:09:13,358 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 17:09:13,399 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 17:09:13,400 INFO L314 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-14 17:09:13,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:09:13 BoogieIcfgContainer [2024-10-14 17:09:13,402 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 17:09:13,403 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 17:09:13,403 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 17:09:13,407 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 17:09:13,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:09:12" (1/3) ... [2024-10-14 17:09:13,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6c09b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:09:13, skipping insertion in model container [2024-10-14 17:09:13,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:12" (2/3) ... [2024-10-14 17:09:13,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6c09b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:09:13, skipping insertion in model container [2024-10-14 17:09:13,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:09:13" (3/3) ... [2024-10-14 17:09:13,412 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_51-mutexptr_racefree.i [2024-10-14 17:09:13,429 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 17:09:13,430 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-10-14 17:09:13,430 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 17:09:13,504 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-14 17:09:13,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 203 transitions, 413 flow [2024-10-14 17:09:13,655 INFO L124 PetriNetUnfolderBase]: 19/277 cut-off events. [2024-10-14 17:09:13,657 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 17:09:13,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 277 events. 19/277 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 850 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 152. Up to 4 conditions per place. [2024-10-14 17:09:13,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 203 transitions, 413 flow [2024-10-14 17:09:13,676 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 203 transitions, 413 flow [2024-10-14 17:09:13,688 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:09:13,696 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;@294f9fcf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:09:13,697 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-10-14 17:09:13,708 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 17:09:13,708 INFO L124 PetriNetUnfolderBase]: 0/40 cut-off events. [2024-10-14 17:09:13,709 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 17:09:13,709 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:13,710 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] [2024-10-14 17:09:13,710 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2024-10-14 17:09:13,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:13,716 INFO L85 PathProgramCache]: Analyzing trace with hash -2077782962, now seen corresponding path program 1 times [2024-10-14 17:09:13,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:13,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683169607] [2024-10-14 17:09:13,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:13,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:13,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:13,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:13,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683169607] [2024-10-14 17:09:13,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683169607] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:13,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:13,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:09:13,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536765698] [2024-10-14 17:09:13,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:13,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:09:13,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:14,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:09:14,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:09:14,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 203 [2024-10-14 17:09:14,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 203 transitions, 413 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:14,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:14,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 203 [2024-10-14 17:09:14,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:14,370 INFO L124 PetriNetUnfolderBase]: 73/854 cut-off events. [2024-10-14 17:09:14,370 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 17:09:14,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 854 events. 73/854 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4450 event pairs, 72 based on Foata normal form. 84/850 useless extension candidates. Maximal degree in co-relation 899. Up to 175 conditions per place. [2024-10-14 17:09:14,382 INFO L140 encePairwiseOnDemand]: 188/203 looper letters, 22 selfloop transitions, 2 changer transitions 0/188 dead transitions. [2024-10-14 17:09:14,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 188 transitions, 431 flow [2024-10-14 17:09:14,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:09:14,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:09:14,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 532 transitions. [2024-10-14 17:09:14,401 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8735632183908046 [2024-10-14 17:09:14,405 INFO L175 Difference]: Start difference. First operand has 193 places, 203 transitions, 413 flow. Second operand 3 states and 532 transitions. [2024-10-14 17:09:14,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 188 transitions, 431 flow [2024-10-14 17:09:14,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 188 transitions, 431 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:09:14,413 INFO L231 Difference]: Finished difference. Result has 192 places, 188 transitions, 387 flow [2024-10-14 17:09:14,416 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=387, PETRI_PLACES=192, PETRI_TRANSITIONS=188} [2024-10-14 17:09:14,421 INFO L277 CegarLoopForPetriNet]: 193 programPoint places, -1 predicate places. [2024-10-14 17:09:14,422 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 188 transitions, 387 flow [2024-10-14 17:09:14,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:14,422 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:14,423 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] [2024-10-14 17:09:14,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 17:09:14,423 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2024-10-14 17:09:14,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:14,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1448886488, now seen corresponding path program 1 times [2024-10-14 17:09:14,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:14,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157015408] [2024-10-14 17:09:14,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:14,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:14,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:14,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:14,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157015408] [2024-10-14 17:09:14,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157015408] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:14,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:14,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:09:14,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062865674] [2024-10-14 17:09:14,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:14,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:09:14,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:14,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:09:14,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:09:14,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 203 [2024-10-14 17:09:14,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 188 transitions, 387 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:14,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:14,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 203 [2024-10-14 17:09:14,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:14,747 INFO L124 PetriNetUnfolderBase]: 48/677 cut-off events. [2024-10-14 17:09:14,747 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 17:09:14,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 677 events. 48/677 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3125 event pairs, 0 based on Foata normal form. 1/600 useless extension candidates. Maximal degree in co-relation 752. Up to 108 conditions per place. [2024-10-14 17:09:14,753 INFO L140 encePairwiseOnDemand]: 200/203 looper letters, 22 selfloop transitions, 2 changer transitions 0/194 dead transitions. [2024-10-14 17:09:14,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 194 transitions, 447 flow [2024-10-14 17:09:14,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:09:14,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:09:14,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2024-10-14 17:09:14,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8883415435139573 [2024-10-14 17:09:14,757 INFO L175 Difference]: Start difference. First operand has 192 places, 188 transitions, 387 flow. Second operand 3 states and 541 transitions. [2024-10-14 17:09:14,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 194 transitions, 447 flow [2024-10-14 17:09:14,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 194 transitions, 443 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:09:14,765 INFO L231 Difference]: Finished difference. Result has 193 places, 188 transitions, 391 flow [2024-10-14 17:09:14,765 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=391, PETRI_PLACES=193, PETRI_TRANSITIONS=188} [2024-10-14 17:09:14,766 INFO L277 CegarLoopForPetriNet]: 193 programPoint places, 0 predicate places. [2024-10-14 17:09:14,766 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 188 transitions, 391 flow [2024-10-14 17:09:14,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:14,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:14,767 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] [2024-10-14 17:09:14,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 17:09:14,768 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2024-10-14 17:09:14,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:14,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1621023741, now seen corresponding path program 1 times [2024-10-14 17:09:14,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:14,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539931155] [2024-10-14 17:09:14,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:14,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:15,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:15,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:15,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539931155] [2024-10-14 17:09:15,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539931155] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:15,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:15,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:09:15,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947078801] [2024-10-14 17:09:15,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:15,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:09:15,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:15,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:09:15,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:09:15,607 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 203 [2024-10-14 17:09:15,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 188 transitions, 391 flow. Second operand has 6 states, 6 states have (on average 141.5) internal successors, (849), 6 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:15,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:15,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 203 [2024-10-14 17:09:15,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:16,093 INFO L124 PetriNetUnfolderBase]: 578/2340 cut-off events. [2024-10-14 17:09:16,094 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-10-14 17:09:16,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3641 conditions, 2340 events. 578/2340 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 16691 event pairs, 343 based on Foata normal form. 0/2124 useless extension candidates. Maximal degree in co-relation 3517. Up to 1071 conditions per place. [2024-10-14 17:09:16,108 INFO L140 encePairwiseOnDemand]: 180/203 looper letters, 73 selfloop transitions, 70 changer transitions 0/281 dead transitions. [2024-10-14 17:09:16,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 281 transitions, 866 flow [2024-10-14 17:09:16,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:09:16,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:09:16,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 984 transitions. [2024-10-14 17:09:16,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8078817733990148 [2024-10-14 17:09:16,111 INFO L175 Difference]: Start difference. First operand has 193 places, 188 transitions, 391 flow. Second operand 6 states and 984 transitions. [2024-10-14 17:09:16,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 281 transitions, 866 flow [2024-10-14 17:09:16,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 281 transitions, 860 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:09:16,118 INFO L231 Difference]: Finished difference. Result has 201 places, 257 transitions, 850 flow [2024-10-14 17:09:16,119 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=850, PETRI_PLACES=201, PETRI_TRANSITIONS=257} [2024-10-14 17:09:16,119 INFO L277 CegarLoopForPetriNet]: 193 programPoint places, 8 predicate places. [2024-10-14 17:09:16,120 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 257 transitions, 850 flow [2024-10-14 17:09:16,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 141.5) internal successors, (849), 6 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:16,121 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:16,121 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] [2024-10-14 17:09:16,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 17:09:16,121 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2024-10-14 17:09:16,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:16,122 INFO L85 PathProgramCache]: Analyzing trace with hash -43087686, now seen corresponding path program 1 times [2024-10-14 17:09:16,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:16,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964756752] [2024-10-14 17:09:16,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:16,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:16,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:16,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:16,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964756752] [2024-10-14 17:09:16,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964756752] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:16,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:16,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:09:16,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464252283] [2024-10-14 17:09:16,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:16,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:09:16,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:16,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:09:16,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:09:16,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 203 [2024-10-14 17:09:16,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 257 transitions, 850 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:16,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:16,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 203 [2024-10-14 17:09:16,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:16,360 INFO L124 PetriNetUnfolderBase]: 245/1546 cut-off events. [2024-10-14 17:09:16,361 INFO L125 PetriNetUnfolderBase]: For 105/130 co-relation queries the response was YES. [2024-10-14 17:09:16,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2409 conditions, 1546 events. 245/1546 cut-off events. For 105/130 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 10340 event pairs, 110 based on Foata normal form. 0/1443 useless extension candidates. Maximal degree in co-relation 2293. Up to 299 conditions per place. [2024-10-14 17:09:16,370 INFO L140 encePairwiseOnDemand]: 195/203 looper letters, 25 selfloop transitions, 2 changer transitions 0/253 dead transitions. [2024-10-14 17:09:16,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 253 transitions, 896 flow [2024-10-14 17:09:16,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:09:16,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:09:16,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2024-10-14 17:09:16,373 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8374384236453202 [2024-10-14 17:09:16,373 INFO L175 Difference]: Start difference. First operand has 201 places, 257 transitions, 850 flow. Second operand 3 states and 510 transitions. [2024-10-14 17:09:16,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 253 transitions, 896 flow [2024-10-14 17:09:16,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 253 transitions, 896 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:09:16,385 INFO L231 Difference]: Finished difference. Result has 198 places, 253 transitions, 852 flow [2024-10-14 17:09:16,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=852, PETRI_PLACES=198, PETRI_TRANSITIONS=253} [2024-10-14 17:09:16,386 INFO L277 CegarLoopForPetriNet]: 193 programPoint places, 5 predicate places. [2024-10-14 17:09:16,387 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 253 transitions, 852 flow [2024-10-14 17:09:16,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:16,388 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:16,388 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:09:16,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 17:09:16,388 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2024-10-14 17:09:16,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:16,389 INFO L85 PathProgramCache]: Analyzing trace with hash 918752132, now seen corresponding path program 1 times [2024-10-14 17:09:16,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:16,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208342477] [2024-10-14 17:09:16,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:16,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:09:16,423 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 17:09:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:09:16,468 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 17:09:16,468 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 17:09:16,469 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-10-14 17:09:16,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-10-14 17:09:16,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-10-14 17:09:16,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-10-14 17:09:16,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-10-14 17:09:16,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-10-14 17:09:16,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-10-14 17:09:16,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-10-14 17:09:16,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-10-14 17:09:16,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-10-14 17:09:16,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-10-14 17:09:16,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-10-14 17:09:16,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-10-14 17:09:16,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-10-14 17:09:16,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-10-14 17:09:16,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-10-14 17:09:16,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-10-14 17:09:16,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-10-14 17:09:16,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-10-14 17:09:16,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-10-14 17:09:16,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-10-14 17:09:16,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-10-14 17:09:16,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 17:09:16,476 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-14 17:09:16,479 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 17:09:16,479 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-14 17:09:16,526 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-14 17:09:16,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 280 transitions, 576 flow [2024-10-14 17:09:16,583 INFO L124 PetriNetUnfolderBase]: 34/456 cut-off events. [2024-10-14 17:09:16,584 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-14 17:09:16,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 456 events. 34/456 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1772 event pairs, 0 based on Foata normal form. 0/384 useless extension candidates. Maximal degree in co-relation 279. Up to 8 conditions per place. [2024-10-14 17:09:16,590 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 280 transitions, 576 flow [2024-10-14 17:09:16,596 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 280 transitions, 576 flow [2024-10-14 17:09:16,597 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:09:16,599 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;@294f9fcf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:09:16,600 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-10-14 17:09:16,603 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 17:09:16,603 INFO L124 PetriNetUnfolderBase]: 0/40 cut-off events. [2024-10-14 17:09:16,603 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 17:09:16,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:16,604 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] [2024-10-14 17:09:16,604 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-10-14 17:09:16,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:16,605 INFO L85 PathProgramCache]: Analyzing trace with hash 511889766, now seen corresponding path program 1 times [2024-10-14 17:09:16,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:16,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403476312] [2024-10-14 17:09:16,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:16,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:16,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:16,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:16,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403476312] [2024-10-14 17:09:16,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403476312] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:16,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:16,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:09:16,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523791833] [2024-10-14 17:09:16,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:16,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:09:16,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:16,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:09:16,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:09:16,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 280 [2024-10-14 17:09:16,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 280 transitions, 576 flow. Second operand has 3 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:16,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:16,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 280 [2024-10-14 17:09:16,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:18,058 INFO L124 PetriNetUnfolderBase]: 1642/9347 cut-off events. [2024-10-14 17:09:18,058 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2024-10-14 17:09:18,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12080 conditions, 9347 events. 1642/9347 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 97678 event pairs, 1629 based on Foata normal form. 1315/9739 useless extension candidates. Maximal degree in co-relation 10772. Up to 2673 conditions per place. [2024-10-14 17:09:18,186 INFO L140 encePairwiseOnDemand]: 259/280 looper letters, 33 selfloop transitions, 2 changer transitions 0/259 dead transitions. [2024-10-14 17:09:18,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 259 transitions, 604 flow [2024-10-14 17:09:18,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:09:18,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:09:18,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 729 transitions. [2024-10-14 17:09:18,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8678571428571429 [2024-10-14 17:09:18,189 INFO L175 Difference]: Start difference. First operand has 265 places, 280 transitions, 576 flow. Second operand 3 states and 729 transitions. [2024-10-14 17:09:18,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 259 transitions, 604 flow [2024-10-14 17:09:18,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 259 transitions, 604 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:09:18,194 INFO L231 Difference]: Finished difference. Result has 264 places, 259 transitions, 538 flow [2024-10-14 17:09:18,195 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=538, PETRI_PLACES=264, PETRI_TRANSITIONS=259} [2024-10-14 17:09:18,196 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, -1 predicate places. [2024-10-14 17:09:18,196 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 259 transitions, 538 flow [2024-10-14 17:09:18,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:18,197 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:18,197 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] [2024-10-14 17:09:18,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 17:09:18,197 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-10-14 17:09:18,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:18,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1486845736, now seen corresponding path program 1 times [2024-10-14 17:09:18,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:18,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599656731] [2024-10-14 17:09:18,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:18,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:18,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:18,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599656731] [2024-10-14 17:09:18,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599656731] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:18,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:18,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:09:18,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106678605] [2024-10-14 17:09:18,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:18,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:09:18,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:18,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:09:18,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:09:18,259 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 280 [2024-10-14 17:09:18,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 259 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:18,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:18,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 280 [2024-10-14 17:09:18,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:19,080 INFO L124 PetriNetUnfolderBase]: 788/5475 cut-off events. [2024-10-14 17:09:19,081 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-10-14 17:09:19,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6831 conditions, 5475 events. 788/5475 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 53425 event pairs, 774 based on Foata normal form. 1/4830 useless extension candidates. Maximal degree in co-relation 6781. Up to 1303 conditions per place. [2024-10-14 17:09:19,131 INFO L140 encePairwiseOnDemand]: 277/280 looper letters, 31 selfloop transitions, 2 changer transitions 0/266 dead transitions. [2024-10-14 17:09:19,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 266 transitions, 618 flow [2024-10-14 17:09:19,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:09:19,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:09:19,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 739 transitions. [2024-10-14 17:09:19,134 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8797619047619047 [2024-10-14 17:09:19,134 INFO L175 Difference]: Start difference. First operand has 264 places, 259 transitions, 538 flow. Second operand 3 states and 739 transitions. [2024-10-14 17:09:19,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 266 transitions, 618 flow [2024-10-14 17:09:19,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 266 transitions, 614 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:09:19,141 INFO L231 Difference]: Finished difference. Result has 265 places, 260 transitions, 546 flow [2024-10-14 17:09:19,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=546, PETRI_PLACES=265, PETRI_TRANSITIONS=260} [2024-10-14 17:09:19,142 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, 0 predicate places. [2024-10-14 17:09:19,143 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 260 transitions, 546 flow [2024-10-14 17:09:19,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:19,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:19,144 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] [2024-10-14 17:09:19,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 17:09:19,144 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-10-14 17:09:19,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:19,145 INFO L85 PathProgramCache]: Analyzing trace with hash -875981565, now seen corresponding path program 1 times [2024-10-14 17:09:19,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:19,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945458314] [2024-10-14 17:09:19,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:19,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:19,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:19,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:19,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945458314] [2024-10-14 17:09:19,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945458314] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:19,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:19,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:09:19,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315725433] [2024-10-14 17:09:19,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:19,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:09:19,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:19,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:09:19,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:09:19,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 280 [2024-10-14 17:09:19,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 260 transitions, 546 flow. Second operand has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:19,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:19,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 280 [2024-10-14 17:09:19,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:28,090 INFO L124 PetriNetUnfolderBase]: 29144/72190 cut-off events. [2024-10-14 17:09:28,090 INFO L125 PetriNetUnfolderBase]: For 1369/1369 co-relation queries the response was YES. [2024-10-14 17:09:28,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118399 conditions, 72190 events. 29144/72190 cut-off events. For 1369/1369 co-relation queries the response was YES. Maximal size of possible extension queue 1187. Compared 840593 event pairs, 19095 based on Foata normal form. 0/66409 useless extension candidates. Maximal degree in co-relation 108393. Up to 40528 conditions per place. [2024-10-14 17:09:28,691 INFO L140 encePairwiseOnDemand]: 241/280 looper letters, 123 selfloop transitions, 135 changer transitions 0/443 dead transitions. [2024-10-14 17:09:28,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 443 transitions, 1438 flow [2024-10-14 17:09:28,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:09:28,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:09:28,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1379 transitions. [2024-10-14 17:09:28,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8208333333333333 [2024-10-14 17:09:28,696 INFO L175 Difference]: Start difference. First operand has 265 places, 260 transitions, 546 flow. Second operand 6 states and 1379 transitions. [2024-10-14 17:09:28,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 443 transitions, 1438 flow [2024-10-14 17:09:28,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 443 transitions, 1435 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 17:09:28,732 INFO L231 Difference]: Finished difference. Result has 274 places, 394 transitions, 1434 flow [2024-10-14 17:09:28,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1434, PETRI_PLACES=274, PETRI_TRANSITIONS=394} [2024-10-14 17:09:28,737 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, 9 predicate places. [2024-10-14 17:09:28,737 INFO L471 AbstractCegarLoop]: Abstraction has has 274 places, 394 transitions, 1434 flow [2024-10-14 17:09:28,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:28,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:28,738 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] [2024-10-14 17:09:28,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 17:09:28,738 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-10-14 17:09:28,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:28,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1236523343, now seen corresponding path program 1 times [2024-10-14 17:09:28,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:28,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972208281] [2024-10-14 17:09:28,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:28,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:28,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:28,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972208281] [2024-10-14 17:09:28,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972208281] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:28,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:28,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:09:28,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404172831] [2024-10-14 17:09:28,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:28,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:09:28,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:28,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:09:28,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:09:28,834 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 280 [2024-10-14 17:09:28,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 394 transitions, 1434 flow. Second operand has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:28,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:28,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 280 [2024-10-14 17:09:28,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:34,432 INFO L124 PetriNetUnfolderBase]: 14894/50489 cut-off events. [2024-10-14 17:09:34,432 INFO L125 PetriNetUnfolderBase]: For 5290/5883 co-relation queries the response was YES. [2024-10-14 17:09:34,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86693 conditions, 50489 events. 14894/50489 cut-off events. For 5290/5883 co-relation queries the response was YES. Maximal size of possible extension queue 919. Compared 636308 event pairs, 9103 based on Foata normal form. 0/46792 useless extension candidates. Maximal degree in co-relation 75640. Up to 14377 conditions per place. [2024-10-14 17:09:34,783 INFO L140 encePairwiseOnDemand]: 268/280 looper letters, 40 selfloop transitions, 3 changer transitions 0/389 dead transitions. [2024-10-14 17:09:34,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 389 transitions, 1515 flow [2024-10-14 17:09:34,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:09:34,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:09:34,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 691 transitions. [2024-10-14 17:09:34,786 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8226190476190476 [2024-10-14 17:09:34,786 INFO L175 Difference]: Start difference. First operand has 274 places, 394 transitions, 1434 flow. Second operand 3 states and 691 transitions. [2024-10-14 17:09:34,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 389 transitions, 1515 flow [2024-10-14 17:09:34,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 389 transitions, 1515 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:09:34,926 INFO L231 Difference]: Finished difference. Result has 268 places, 388 transitions, 1437 flow [2024-10-14 17:09:34,926 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1437, PETRI_PLACES=268, PETRI_TRANSITIONS=388} [2024-10-14 17:09:34,928 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, 3 predicate places. [2024-10-14 17:09:34,928 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 388 transitions, 1437 flow [2024-10-14 17:09:34,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:34,929 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:34,930 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:09:34,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 17:09:34,930 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-10-14 17:09:34,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:34,931 INFO L85 PathProgramCache]: Analyzing trace with hash 521167873, now seen corresponding path program 1 times [2024-10-14 17:09:34,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:34,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941246204] [2024-10-14 17:09:34,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:34,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:35,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:35,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:35,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941246204] [2024-10-14 17:09:35,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941246204] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:35,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:35,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:09:35,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119914236] [2024-10-14 17:09:35,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:35,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:09:35,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:35,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:09:35,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:09:35,646 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 280 [2024-10-14 17:09:35,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 388 transitions, 1437 flow. Second operand has 6 states, 6 states have (on average 188.16666666666666) internal successors, (1129), 6 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:35,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:35,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 280 [2024-10-14 17:09:35,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:54,975 INFO L124 PetriNetUnfolderBase]: 71701/172000 cut-off events. [2024-10-14 17:09:54,975 INFO L125 PetriNetUnfolderBase]: For 43709/48167 co-relation queries the response was YES. [2024-10-14 17:09:55,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358641 conditions, 172000 events. 71701/172000 cut-off events. For 43709/48167 co-relation queries the response was YES. Maximal size of possible extension queue 2876. Compared 2182784 event pairs, 14346 based on Foata normal form. 67/162476 useless extension candidates. Maximal degree in co-relation 352914. Up to 49105 conditions per place. [2024-10-14 17:09:56,358 INFO L140 encePairwiseOnDemand]: 226/280 looper letters, 493 selfloop transitions, 227 changer transitions 0/902 dead transitions. [2024-10-14 17:09:56,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 902 transitions, 5153 flow [2024-10-14 17:09:56,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:09:56,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:09:56,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1483 transitions. [2024-10-14 17:09:56,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8827380952380952 [2024-10-14 17:09:56,366 INFO L175 Difference]: Start difference. First operand has 268 places, 388 transitions, 1437 flow. Second operand 6 states and 1483 transitions. [2024-10-14 17:09:56,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 902 transitions, 5153 flow [2024-10-14 17:09:56,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 902 transitions, 5153 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:09:56,903 INFO L231 Difference]: Finished difference. Result has 278 places, 627 transitions, 3813 flow [2024-10-14 17:09:56,904 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3813, PETRI_PLACES=278, PETRI_TRANSITIONS=627} [2024-10-14 17:09:56,905 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, 13 predicate places. [2024-10-14 17:09:56,905 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 627 transitions, 3813 flow [2024-10-14 17:09:56,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.16666666666666) internal successors, (1129), 6 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:56,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:56,906 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:09:56,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 17:09:56,906 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-10-14 17:09:56,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:56,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1363631754, now seen corresponding path program 1 times [2024-10-14 17:09:56,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:56,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903432041] [2024-10-14 17:09:56,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:56,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:57,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:57,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:57,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903432041] [2024-10-14 17:09:57,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903432041] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:57,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:57,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:09:57,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280369559] [2024-10-14 17:09:57,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:57,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:09:57,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:57,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:09:57,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:09:57,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 280 [2024-10-14 17:09:57,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 627 transitions, 3813 flow. Second operand has 6 states, 6 states have (on average 187.16666666666666) internal successors, (1123), 6 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:57,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:57,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 280 [2024-10-14 17:09:57,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand