./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_42-trylock2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version a046e57d 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_42-trylock2_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 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 09:54:07,435 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 09:54:07,509 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-13 09:54:07,513 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 09:54:07,514 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 09:54:07,545 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 09:54:07,546 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 09:54:07,547 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 09:54:07,548 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 09:54:07,550 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 09:54:07,551 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 09:54:07,551 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 09:54:07,551 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 09:54:07,552 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 09:54:07,552 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 09:54:07,553 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 09:54:07,553 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 09:54:07,553 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 09:54:07,553 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 09:54:07,554 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 09:54:07,554 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 09:54:07,555 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 09:54:07,555 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-13 09:54:07,555 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 09:54:07,555 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 09:54:07,556 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 09:54:07,556 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 09:54:07,556 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 09:54:07,556 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 09:54:07,556 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 09:54:07,557 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 09:54:07,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:54:07,557 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 09:54:07,557 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 09:54:07,557 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 09:54:07,558 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 09:54:07,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 09:54:07,558 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 09:54:07,559 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 09:54:07,560 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 09:54:07,560 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 09:54:07,560 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 [2024-10-13 09:54:07,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 09:54:07,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 09:54:07,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 09:54:07,875 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 09:54:07,876 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 09:54:07,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2024-10-13 09:54:09,390 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 09:54:09,670 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 09:54:09,671 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2024-10-13 09:54:09,693 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f76a13524/5357b6f3b21c46b480809b26e38e84a5/FLAG7eb82632c [2024-10-13 09:54:09,717 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f76a13524/5357b6f3b21c46b480809b26e38e84a5 [2024-10-13 09:54:09,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 09:54:09,722 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 09:54:09,726 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 09:54:09,726 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 09:54:09,732 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 09:54:09,733 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:54:09" (1/1) ... [2024-10-13 09:54:09,736 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cb96db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:09, skipping insertion in model container [2024-10-13 09:54:09,736 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:54:09" (1/1) ... [2024-10-13 09:54:09,788 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 09:54:10,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:54:10,211 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 09:54:10,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:54:10,314 INFO L204 MainTranslator]: Completed translation [2024-10-13 09:54:10,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:10 WrapperNode [2024-10-13 09:54:10,315 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 09:54:10,316 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 09:54:10,316 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 09:54:10,317 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 09:54:10,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:10" (1/1) ... [2024-10-13 09:54:10,341 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:10" (1/1) ... [2024-10-13 09:54:10,371 INFO L138 Inliner]: procedures = 172, calls = 61, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 176 [2024-10-13 09:54:10,372 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 09:54:10,373 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 09:54:10,373 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 09:54:10,373 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 09:54:10,383 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:10" (1/1) ... [2024-10-13 09:54:10,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:10" (1/1) ... [2024-10-13 09:54:10,391 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:10" (1/1) ... [2024-10-13 09:54:10,392 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:10" (1/1) ... [2024-10-13 09:54:10,400 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:10" (1/1) ... [2024-10-13 09:54:10,405 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:10" (1/1) ... [2024-10-13 09:54:10,408 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:10" (1/1) ... [2024-10-13 09:54:10,409 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:10" (1/1) ... [2024-10-13 09:54:10,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 09:54:10,414 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 09:54:10,414 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 09:54:10,414 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 09:54:10,415 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:10" (1/1) ... [2024-10-13 09:54:10,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:54:10,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:54:10,456 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) [2024-10-13 09:54:10,460 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 [2024-10-13 09:54:10,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-13 09:54:10,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-13 09:54:10,513 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 09:54:10,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 09:54:10,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 09:54:10,514 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-13 09:54:10,514 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-13 09:54:10,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 09:54:10,515 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-10-13 09:54:10,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-13 09:54:10,515 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 09:54:10,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 09:54:10,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 09:54:10,517 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 09:54:10,685 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 09:54:10,687 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 09:54:11,269 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 09:54:11,269 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 09:54:11,344 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 09:54:11,344 INFO L314 CfgBuilder]: Removed 23 assume(true) statements. [2024-10-13 09:54:11,345 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:54:11 BoogieIcfgContainer [2024-10-13 09:54:11,347 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 09:54:11,348 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 09:54:11,349 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 09:54:11,353 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 09:54:11,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:54:09" (1/3) ... [2024-10-13 09:54:11,354 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c36e99a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:54:11, skipping insertion in model container [2024-10-13 09:54:11,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:10" (2/3) ... [2024-10-13 09:54:11,354 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c36e99a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:54:11, skipping insertion in model container [2024-10-13 09:54:11,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:54:11" (3/3) ... [2024-10-13 09:54:11,356 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2024-10-13 09:54:11,376 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 09:54:11,376 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-10-13 09:54:11,377 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 09:54:11,449 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-13 09:54:11,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 273 transitions, 553 flow [2024-10-13 09:54:11,644 INFO L124 PetriNetUnfolderBase]: 53/413 cut-off events. [2024-10-13 09:54:11,644 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:54:11,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 418 conditions, 413 events. 53/413 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1929 event pairs, 0 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 234. Up to 6 conditions per place. [2024-10-13 09:54:11,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 243 places, 273 transitions, 553 flow [2024-10-13 09:54:11,666 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 273 transitions, 553 flow [2024-10-13 09:54:11,677 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:54:11,684 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;@6d05d147, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:54:11,684 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-13 09:54:11,698 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:54:11,698 INFO L124 PetriNetUnfolderBase]: 2/61 cut-off events. [2024-10-13 09:54:11,698 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:54:11,698 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:11,699 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] [2024-10-13 09:54:11,700 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-13 09:54:11,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:11,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1396948042, now seen corresponding path program 1 times [2024-10-13 09:54:11,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:11,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805916018] [2024-10-13 09:54:11,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:11,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:12,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:12,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805916018] [2024-10-13 09:54:12,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805916018] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:12,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:12,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:54:12,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005117819] [2024-10-13 09:54:12,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:12,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:12,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:12,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:12,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:12,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 273 [2024-10-13 09:54:12,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 273 transitions, 553 flow. Second operand has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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) [2024-10-13 09:54:12,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:12,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 273 [2024-10-13 09:54:12,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:12,546 INFO L124 PetriNetUnfolderBase]: 229/1869 cut-off events. [2024-10-13 09:54:12,546 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 09:54:12,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2342 conditions, 1869 events. 229/1869 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 12907 event pairs, 0 based on Foata normal form. 323/2009 useless extension candidates. Maximal degree in co-relation 2253. Up to 454 conditions per place. [2024-10-13 09:54:12,566 INFO L140 encePairwiseOnDemand]: 239/273 looper letters, 44 selfloop transitions, 2 changer transitions 0/246 dead transitions. [2024-10-13 09:54:12,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 246 transitions, 591 flow [2024-10-13 09:54:12,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:12,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:12,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 703 transitions. [2024-10-13 09:54:12,587 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8583638583638583 [2024-10-13 09:54:12,590 INFO L175 Difference]: Start difference. First operand has 243 places, 273 transitions, 553 flow. Second operand 3 states and 703 transitions. [2024-10-13 09:54:12,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 246 transitions, 591 flow [2024-10-13 09:54:12,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 246 transitions, 591 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:54:12,603 INFO L231 Difference]: Finished difference. Result has 238 places, 234 transitions, 483 flow [2024-10-13 09:54:12,606 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=483, PETRI_PLACES=238, PETRI_TRANSITIONS=234} [2024-10-13 09:54:12,611 INFO L277 CegarLoopForPetriNet]: 243 programPoint places, -5 predicate places. [2024-10-13 09:54:12,613 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 234 transitions, 483 flow [2024-10-13 09:54:12,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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) [2024-10-13 09:54:12,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:12,615 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:12,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 09:54:12,616 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-13 09:54:12,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:12,617 INFO L85 PathProgramCache]: Analyzing trace with hash 853146814, now seen corresponding path program 1 times [2024-10-13 09:54:12,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:12,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934947441] [2024-10-13 09:54:12,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:12,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:13,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:13,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:13,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934947441] [2024-10-13 09:54:13,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934947441] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:13,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:13,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:54:13,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983882122] [2024-10-13 09:54:13,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:13,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:54:13,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:13,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:54:13,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:54:13,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 273 [2024-10-13 09:54:13,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 234 transitions, 483 flow. Second operand has 6 states, 6 states have (on average 193.5) internal successors, (1161), 6 states have internal predecessors, (1161), 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) [2024-10-13 09:54:13,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:13,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 273 [2024-10-13 09:54:13,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:13,949 INFO L124 PetriNetUnfolderBase]: 349/2118 cut-off events. [2024-10-13 09:54:13,949 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-10-13 09:54:13,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2895 conditions, 2118 events. 349/2118 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 15403 event pairs, 13 based on Foata normal form. 0/1931 useless extension candidates. Maximal degree in co-relation 2801. Up to 587 conditions per place. [2024-10-13 09:54:13,965 INFO L140 encePairwiseOnDemand]: 267/273 looper letters, 88 selfloop transitions, 5 changer transitions 0/281 dead transitions. [2024-10-13 09:54:13,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 281 transitions, 763 flow [2024-10-13 09:54:13,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:54:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:54:13,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1246 transitions. [2024-10-13 09:54:13,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7606837606837606 [2024-10-13 09:54:13,971 INFO L175 Difference]: Start difference. First operand has 238 places, 234 transitions, 483 flow. Second operand 6 states and 1246 transitions. [2024-10-13 09:54:13,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 281 transitions, 763 flow [2024-10-13 09:54:13,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 281 transitions, 759 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 09:54:13,981 INFO L231 Difference]: Finished difference. Result has 240 places, 233 transitions, 487 flow [2024-10-13 09:54:13,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=487, PETRI_PLACES=240, PETRI_TRANSITIONS=233} [2024-10-13 09:54:13,984 INFO L277 CegarLoopForPetriNet]: 243 programPoint places, -3 predicate places. [2024-10-13 09:54:13,985 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 233 transitions, 487 flow [2024-10-13 09:54:13,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.5) internal successors, (1161), 6 states have internal predecessors, (1161), 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) [2024-10-13 09:54:13,986 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:13,986 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] [2024-10-13 09:54:13,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 09:54:13,986 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-13 09:54:13,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:13,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1690112521, now seen corresponding path program 1 times [2024-10-13 09:54:13,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:13,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021879219] [2024-10-13 09:54:13,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:13,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:14,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:14,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:14,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021879219] [2024-10-13 09:54:14,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021879219] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:14,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:14,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:54:14,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479824072] [2024-10-13 09:54:14,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:14,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:14,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:14,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:14,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:14,077 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 273 [2024-10-13 09:54:14,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 233 transitions, 487 flow. Second operand has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 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) [2024-10-13 09:54:14,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:14,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 273 [2024-10-13 09:54:14,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:14,638 INFO L124 PetriNetUnfolderBase]: 596/3781 cut-off events. [2024-10-13 09:54:14,638 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-13 09:54:14,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5039 conditions, 3781 events. 596/3781 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 32077 event pairs, 110 based on Foata normal form. 0/3422 useless extension candidates. Maximal degree in co-relation 4969. Up to 735 conditions per place. [2024-10-13 09:54:14,662 INFO L140 encePairwiseOnDemand]: 258/273 looper letters, 68 selfloop transitions, 10 changer transitions 0/266 dead transitions. [2024-10-13 09:54:14,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 266 transitions, 712 flow [2024-10-13 09:54:14,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:14,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:14,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 662 transitions. [2024-10-13 09:54:14,664 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8083028083028083 [2024-10-13 09:54:14,665 INFO L175 Difference]: Start difference. First operand has 240 places, 233 transitions, 487 flow. Second operand 3 states and 662 transitions. [2024-10-13 09:54:14,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 266 transitions, 712 flow [2024-10-13 09:54:14,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 266 transitions, 702 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:54:14,670 INFO L231 Difference]: Finished difference. Result has 237 places, 239 transitions, 551 flow [2024-10-13 09:54:14,671 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=551, PETRI_PLACES=237, PETRI_TRANSITIONS=239} [2024-10-13 09:54:14,672 INFO L277 CegarLoopForPetriNet]: 243 programPoint places, -6 predicate places. [2024-10-13 09:54:14,672 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 239 transitions, 551 flow [2024-10-13 09:54:14,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 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) [2024-10-13 09:54:14,673 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:14,673 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] [2024-10-13 09:54:14,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 09:54:14,673 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-13 09:54:14,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:14,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1606535005, now seen corresponding path program 1 times [2024-10-13 09:54:14,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:14,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613719316] [2024-10-13 09:54:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:14,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:14,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:14,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:14,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613719316] [2024-10-13 09:54:14,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613719316] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:14,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:14,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:54:14,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85131588] [2024-10-13 09:54:14,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:14,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:14,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:14,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:14,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:14,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 273 [2024-10-13 09:54:14,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 239 transitions, 551 flow. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 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) [2024-10-13 09:54:14,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:14,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 273 [2024-10-13 09:54:14,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:15,298 INFO L124 PetriNetUnfolderBase]: 592/3799 cut-off events. [2024-10-13 09:54:15,298 INFO L125 PetriNetUnfolderBase]: For 412/416 co-relation queries the response was YES. [2024-10-13 09:54:15,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5431 conditions, 3799 events. 592/3799 cut-off events. For 412/416 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 32118 event pairs, 409 based on Foata normal form. 4/3437 useless extension candidates. Maximal degree in co-relation 5361. Up to 1109 conditions per place. [2024-10-13 09:54:15,326 INFO L140 encePairwiseOnDemand]: 266/273 looper letters, 57 selfloop transitions, 8 changer transitions 0/260 dead transitions. [2024-10-13 09:54:15,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 260 transitions, 739 flow [2024-10-13 09:54:15,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:15,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:15,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 656 transitions. [2024-10-13 09:54:15,329 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.800976800976801 [2024-10-13 09:54:15,329 INFO L175 Difference]: Start difference. First operand has 237 places, 239 transitions, 551 flow. Second operand 3 states and 656 transitions. [2024-10-13 09:54:15,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 260 transitions, 739 flow [2024-10-13 09:54:15,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 260 transitions, 713 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 09:54:15,337 INFO L231 Difference]: Finished difference. Result has 239 places, 246 transitions, 603 flow [2024-10-13 09:54:15,338 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=603, PETRI_PLACES=239, PETRI_TRANSITIONS=246} [2024-10-13 09:54:15,340 INFO L277 CegarLoopForPetriNet]: 243 programPoint places, -4 predicate places. [2024-10-13 09:54:15,341 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 246 transitions, 603 flow [2024-10-13 09:54:15,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 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) [2024-10-13 09:54:15,341 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:15,342 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:15,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 09:54:15,344 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-13 09:54:15,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:15,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1881481615, now seen corresponding path program 1 times [2024-10-13 09:54:15,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:15,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025836074] [2024-10-13 09:54:15,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:15,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:54:15,388 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:54:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:54:15,443 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:54:15,443 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:54:15,444 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-10-13 09:54:15,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2024-10-13 09:54:15,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2024-10-13 09:54:15,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2024-10-13 09:54:15,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2024-10-13 09:54:15,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2024-10-13 09:54:15,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2024-10-13 09:54:15,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2024-10-13 09:54:15,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2024-10-13 09:54:15,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2024-10-13 09:54:15,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2024-10-13 09:54:15,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2024-10-13 09:54:15,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2024-10-13 09:54:15,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2024-10-13 09:54:15,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2024-10-13 09:54:15,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2024-10-13 09:54:15,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2024-10-13 09:54:15,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2024-10-13 09:54:15,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2024-10-13 09:54:15,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2024-10-13 09:54:15,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2024-10-13 09:54:15,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2024-10-13 09:54:15,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2024-10-13 09:54:15,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 09:54:15,452 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-13 09:54:15,455 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:54:15,455 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-13 09:54:15,490 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 09:54:15,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 366 transitions, 748 flow [2024-10-13 09:54:15,574 INFO L124 PetriNetUnfolderBase]: 88/674 cut-off events. [2024-10-13 09:54:15,575 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 09:54:15,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686 conditions, 674 events. 88/674 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3424 event pairs, 0 based on Foata normal form. 0/547 useless extension candidates. Maximal degree in co-relation 415. Up to 9 conditions per place. [2024-10-13 09:54:15,587 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 366 transitions, 748 flow [2024-10-13 09:54:15,597 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 366 transitions, 748 flow [2024-10-13 09:54:15,598 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:54:15,599 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;@6d05d147, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:54:15,601 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-10-13 09:54:15,605 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:54:15,608 INFO L124 PetriNetUnfolderBase]: 2/61 cut-off events. [2024-10-13 09:54:15,608 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:54:15,608 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:15,608 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] [2024-10-13 09:54:15,609 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2024-10-13 09:54:15,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:15,609 INFO L85 PathProgramCache]: Analyzing trace with hash -742247900, now seen corresponding path program 1 times [2024-10-13 09:54:15,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:15,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918608525] [2024-10-13 09:54:15,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:15,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:15,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:15,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:15,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918608525] [2024-10-13 09:54:15,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918608525] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:15,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:15,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:54:15,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954823666] [2024-10-13 09:54:15,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:15,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:15,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:15,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:15,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:15,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 366 [2024-10-13 09:54:15,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 366 transitions, 748 flow. Second operand has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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) [2024-10-13 09:54:15,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:15,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 366 [2024-10-13 09:54:15,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:20,052 INFO L124 PetriNetUnfolderBase]: 6064/28771 cut-off events. [2024-10-13 09:54:20,053 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-10-13 09:54:20,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38370 conditions, 28771 events. 6064/28771 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 358509 event pairs, 5747 based on Foata normal form. 6265/32376 useless extension candidates. Maximal degree in co-relation 33103. Up to 9513 conditions per place. [2024-10-13 09:54:20,248 INFO L140 encePairwiseOnDemand]: 320/366 looper letters, 59 selfloop transitions, 2 changer transitions 0/328 dead transitions. [2024-10-13 09:54:20,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 328 transitions, 794 flow [2024-10-13 09:54:20,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:20,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:20,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 931 transitions. [2024-10-13 09:54:20,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8479052823315119 [2024-10-13 09:54:20,253 INFO L175 Difference]: Start difference. First operand has 325 places, 366 transitions, 748 flow. Second operand 3 states and 931 transitions. [2024-10-13 09:54:20,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 328 transitions, 794 flow [2024-10-13 09:54:20,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 328 transitions, 794 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:54:20,261 INFO L231 Difference]: Finished difference. Result has 320 places, 316 transitions, 658 flow [2024-10-13 09:54:20,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=658, PETRI_PLACES=320, PETRI_TRANSITIONS=316} [2024-10-13 09:54:20,264 INFO L277 CegarLoopForPetriNet]: 325 programPoint places, -5 predicate places. [2024-10-13 09:54:20,265 INFO L471 AbstractCegarLoop]: Abstraction has has 320 places, 316 transitions, 658 flow [2024-10-13 09:54:20,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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) [2024-10-13 09:54:20,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:20,266 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:20,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 09:54:20,267 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2024-10-13 09:54:20,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:20,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1340197524, now seen corresponding path program 1 times [2024-10-13 09:54:20,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:20,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078687004] [2024-10-13 09:54:20,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:20,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:20,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:20,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:20,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078687004] [2024-10-13 09:54:20,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078687004] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:20,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:20,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:54:20,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766958003] [2024-10-13 09:54:20,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:20,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:54:20,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:20,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:54:20,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:54:20,687 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 366 [2024-10-13 09:54:20,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 316 transitions, 658 flow. Second operand has 6 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 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) [2024-10-13 09:54:20,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:20,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 366 [2024-10-13 09:54:20,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:24,967 INFO L124 PetriNetUnfolderBase]: 9520/33311 cut-off events. [2024-10-13 09:54:24,968 INFO L125 PetriNetUnfolderBase]: For 293/293 co-relation queries the response was YES. [2024-10-13 09:54:25,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48487 conditions, 33311 events. 9520/33311 cut-off events. For 293/293 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 400788 event pairs, 804 based on Foata normal form. 0/30737 useless extension candidates. Maximal degree in co-relation 3745. Up to 11851 conditions per place. [2024-10-13 09:54:25,185 INFO L140 encePairwiseOnDemand]: 360/366 looper letters, 150 selfloop transitions, 6 changer transitions 0/411 dead transitions. [2024-10-13 09:54:25,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 411 transitions, 1160 flow [2024-10-13 09:54:25,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:54:25,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:54:25,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1710 transitions. [2024-10-13 09:54:25,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7786885245901639 [2024-10-13 09:54:25,189 INFO L175 Difference]: Start difference. First operand has 320 places, 316 transitions, 658 flow. Second operand 6 states and 1710 transitions. [2024-10-13 09:54:25,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 411 transitions, 1160 flow [2024-10-13 09:54:25,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 411 transitions, 1158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:54:25,197 INFO L231 Difference]: Finished difference. Result has 323 places, 315 transitions, 666 flow [2024-10-13 09:54:25,198 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=666, PETRI_PLACES=323, PETRI_TRANSITIONS=315} [2024-10-13 09:54:25,200 INFO L277 CegarLoopForPetriNet]: 325 programPoint places, -2 predicate places. [2024-10-13 09:54:25,201 INFO L471 AbstractCegarLoop]: Abstraction has has 323 places, 315 transitions, 666 flow [2024-10-13 09:54:25,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 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) [2024-10-13 09:54:25,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:25,203 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] [2024-10-13 09:54:25,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 09:54:25,203 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2024-10-13 09:54:25,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:25,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1036572882, now seen corresponding path program 1 times [2024-10-13 09:54:25,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:25,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965026158] [2024-10-13 09:54:25,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:25,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:25,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:25,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:25,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965026158] [2024-10-13 09:54:25,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965026158] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:25,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:25,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:54:25,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224230907] [2024-10-13 09:54:25,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:25,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:25,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:25,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:25,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:25,287 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 366 [2024-10-13 09:54:25,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 315 transitions, 666 flow. Second operand has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 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) [2024-10-13 09:54:25,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:25,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 366 [2024-10-13 09:54:25,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:37,678 INFO L124 PetriNetUnfolderBase]: 30961/107498 cut-off events. [2024-10-13 09:54:37,678 INFO L125 PetriNetUnfolderBase]: For 328/328 co-relation queries the response was YES. [2024-10-13 09:54:38,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156029 conditions, 107498 events. 30961/107498 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 1586. Compared 1522073 event pairs, 10272 based on Foata normal form. 0/96175 useless extension candidates. Maximal degree in co-relation 150881. Up to 26160 conditions per place. [2024-10-13 09:54:38,843 INFO L140 encePairwiseOnDemand]: 341/366 looper letters, 108 selfloop transitions, 18 changer transitions 0/374 dead transitions. [2024-10-13 09:54:38,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 374 transitions, 1047 flow [2024-10-13 09:54:38,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:38,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:38,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 889 transitions. [2024-10-13 09:54:38,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8096539162112932 [2024-10-13 09:54:38,846 INFO L175 Difference]: Start difference. First operand has 323 places, 315 transitions, 666 flow. Second operand 3 states and 889 transitions. [2024-10-13 09:54:38,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 374 transitions, 1047 flow [2024-10-13 09:54:38,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 374 transitions, 1035 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:54:38,858 INFO L231 Difference]: Finished difference. Result has 322 places, 333 transitions, 812 flow [2024-10-13 09:54:38,859 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=812, PETRI_PLACES=322, PETRI_TRANSITIONS=333} [2024-10-13 09:54:38,859 INFO L277 CegarLoopForPetriNet]: 325 programPoint places, -3 predicate places. [2024-10-13 09:54:38,860 INFO L471 AbstractCegarLoop]: Abstraction has has 322 places, 333 transitions, 812 flow [2024-10-13 09:54:38,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 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) [2024-10-13 09:54:38,861 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:38,861 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:38,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 09:54:38,862 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2024-10-13 09:54:38,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:38,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1625617232, now seen corresponding path program 1 times [2024-10-13 09:54:38,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:38,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520032080] [2024-10-13 09:54:38,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:38,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:38,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:38,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520032080] [2024-10-13 09:54:38,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520032080] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:38,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:38,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:54:38,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236585590] [2024-10-13 09:54:38,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:38,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:38,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:38,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:38,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:38,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 366 [2024-10-13 09:54:38,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 333 transitions, 812 flow. Second operand has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 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) [2024-10-13 09:54:38,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:38,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 366 [2024-10-13 09:54:38,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:53,088 INFO L124 PetriNetUnfolderBase]: 30282/120182 cut-off events. [2024-10-13 09:54:53,088 INFO L125 PetriNetUnfolderBase]: For 20146/20658 co-relation queries the response was YES. [2024-10-13 09:54:53,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187018 conditions, 120182 events. 30282/120182 cut-off events. For 20146/20658 co-relation queries the response was YES. Maximal size of possible extension queue 1761. Compared 1796059 event pairs, 21308 based on Foata normal form. 148/109150 useless extension candidates. Maximal degree in co-relation 121149. Up to 42544 conditions per place. [2024-10-13 09:54:53,955 INFO L140 encePairwiseOnDemand]: 355/366 looper letters, 94 selfloop transitions, 18 changer transitions 0/377 dead transitions. [2024-10-13 09:54:53,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 377 transitions, 1174 flow [2024-10-13 09:54:53,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:53,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:53,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 881 transitions. [2024-10-13 09:54:53,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.802367941712204 [2024-10-13 09:54:53,958 INFO L175 Difference]: Start difference. First operand has 322 places, 333 transitions, 812 flow. Second operand 3 states and 881 transitions. [2024-10-13 09:54:53,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 377 transitions, 1174 flow [2024-10-13 09:54:54,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 377 transitions, 1124 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 09:54:54,025 INFO L231 Difference]: Finished difference. Result has 324 places, 349 transitions, 942 flow [2024-10-13 09:54:54,025 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=942, PETRI_PLACES=324, PETRI_TRANSITIONS=349} [2024-10-13 09:54:54,026 INFO L277 CegarLoopForPetriNet]: 325 programPoint places, -1 predicate places. [2024-10-13 09:54:54,026 INFO L471 AbstractCegarLoop]: Abstraction has has 324 places, 349 transitions, 942 flow [2024-10-13 09:54:54,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 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) [2024-10-13 09:54:54,027 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:54,027 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:54,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 09:54:54,028 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2024-10-13 09:54:54,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:54,029 INFO L85 PathProgramCache]: Analyzing trace with hash 15925911, now seen corresponding path program 1 times [2024-10-13 09:54:54,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:54,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544617435] [2024-10-13 09:54:54,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:54,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:54,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:54,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:54,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544617435] [2024-10-13 09:54:54,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544617435] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:54:54,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126476322] [2024-10-13 09:54:54,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:54,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:54:54,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:54:54,143 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:54:54,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 09:54:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:54,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 09:54:54,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:54:54,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:54,352 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:54:54,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:54,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126476322] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:54:54,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:54:54,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 09:54:54,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69548587] [2024-10-13 09:54:54,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:54:54,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:54:54,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:54,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:54:54,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 09:54:54,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 366 [2024-10-13 09:54:54,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 349 transitions, 942 flow. Second operand has 10 states, 10 states have (on average 270.5) internal successors, (2705), 10 states have internal predecessors, (2705), 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) [2024-10-13 09:54:54,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:54,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 366 [2024-10-13 09:54:54,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:56,024 INFO L124 PetriNetUnfolderBase]: 2122/10913 cut-off events. [2024-10-13 09:54:56,025 INFO L125 PetriNetUnfolderBase]: For 1187/1231 co-relation queries the response was YES. [2024-10-13 09:54:56,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15695 conditions, 10913 events. 2122/10913 cut-off events. For 1187/1231 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 116915 event pairs, 238 based on Foata normal form. 297/10451 useless extension candidates. Maximal degree in co-relation 10357. Up to 1457 conditions per place. [2024-10-13 09:54:56,081 INFO L140 encePairwiseOnDemand]: 361/366 looper letters, 138 selfloop transitions, 7 changer transitions 0/340 dead transitions. [2024-10-13 09:54:56,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 340 transitions, 1116 flow [2024-10-13 09:54:56,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 09:54:56,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 09:54:56,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2559 transitions. [2024-10-13 09:54:56,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7768670309653917 [2024-10-13 09:54:56,087 INFO L175 Difference]: Start difference. First operand has 324 places, 349 transitions, 942 flow. Second operand 9 states and 2559 transitions. [2024-10-13 09:54:56,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 340 transitions, 1116 flow [2024-10-13 09:54:56,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 340 transitions, 1096 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 09:54:56,096 INFO L231 Difference]: Finished difference. Result has 226 places, 230 transitions, 600 flow [2024-10-13 09:54:56,096 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=600, PETRI_PLACES=226, PETRI_TRANSITIONS=230} [2024-10-13 09:54:56,097 INFO L277 CegarLoopForPetriNet]: 325 programPoint places, -99 predicate places. [2024-10-13 09:54:56,097 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 230 transitions, 600 flow [2024-10-13 09:54:56,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 270.5) internal successors, (2705), 10 states have internal predecessors, (2705), 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) [2024-10-13 09:54:56,099 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:56,099 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, 1, 1] [2024-10-13 09:54:56,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 09:54:56,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-13 09:54:56,300 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2024-10-13 09:54:56,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:56,301 INFO L85 PathProgramCache]: Analyzing trace with hash 710031724, now seen corresponding path program 1 times [2024-10-13 09:54:56,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:56,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637892830] [2024-10-13 09:54:56,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:56,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:56,347 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 09:54:56,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:56,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637892830] [2024-10-13 09:54:56,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637892830] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:56,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:56,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:54:56,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866594594] [2024-10-13 09:54:56,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:56,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:56,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:56,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:56,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:56,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 366 [2024-10-13 09:54:56,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 230 transitions, 600 flow. Second operand has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 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) [2024-10-13 09:54:56,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:56,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 366 [2024-10-13 09:54:56,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:56,777 INFO L124 PetriNetUnfolderBase]: 494/3053 cut-off events. [2024-10-13 09:54:56,777 INFO L125 PetriNetUnfolderBase]: For 623/644 co-relation queries the response was YES. [2024-10-13 09:54:56,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4782 conditions, 3053 events. 494/3053 cut-off events. For 623/644 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 24434 event pairs, 318 based on Foata normal form. 7/2787 useless extension candidates. Maximal degree in co-relation 4704. Up to 933 conditions per place. [2024-10-13 09:54:56,797 INFO L140 encePairwiseOnDemand]: 358/366 looper letters, 60 selfloop transitions, 12 changer transitions 0/250 dead transitions. [2024-10-13 09:54:56,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 250 transitions, 800 flow [2024-10-13 09:54:56,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:56,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:56,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 843 transitions. [2024-10-13 09:54:56,800 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.76775956284153 [2024-10-13 09:54:56,800 INFO L175 Difference]: Start difference. First operand has 226 places, 230 transitions, 600 flow. Second operand 3 states and 843 transitions. [2024-10-13 09:54:56,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 250 transitions, 800 flow [2024-10-13 09:54:56,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 250 transitions, 785 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-13 09:54:56,807 INFO L231 Difference]: Finished difference. Result has 225 places, 238 transitions, 683 flow [2024-10-13 09:54:56,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=683, PETRI_PLACES=225, PETRI_TRANSITIONS=238} [2024-10-13 09:54:56,808 INFO L277 CegarLoopForPetriNet]: 325 programPoint places, -100 predicate places. [2024-10-13 09:54:56,809 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 238 transitions, 683 flow [2024-10-13 09:54:56,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 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) [2024-10-13 09:54:56,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:56,810 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] [2024-10-13 09:54:56,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 09:54:56,810 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2024-10-13 09:54:56,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:56,810 INFO L85 PathProgramCache]: Analyzing trace with hash 173796495, now seen corresponding path program 1 times [2024-10-13 09:54:56,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:56,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050790361] [2024-10-13 09:54:56,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:56,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:56,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:56,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:56,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050790361] [2024-10-13 09:54:56,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050790361] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:56,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:56,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:54:56,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879092556] [2024-10-13 09:54:56,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:56,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:56,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:56,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:56,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:56,921 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 366 [2024-10-13 09:54:56,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 238 transitions, 683 flow. Second operand has 3 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 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) [2024-10-13 09:54:56,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:56,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 366 [2024-10-13 09:54:56,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:57,339 INFO L124 PetriNetUnfolderBase]: 531/3151 cut-off events. [2024-10-13 09:54:57,339 INFO L125 PetriNetUnfolderBase]: For 1577/1642 co-relation queries the response was YES. [2024-10-13 09:54:57,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5376 conditions, 3151 events. 531/3151 cut-off events. For 1577/1642 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 25660 event pairs, 314 based on Foata normal form. 21/2934 useless extension candidates. Maximal degree in co-relation 5301. Up to 999 conditions per place. [2024-10-13 09:54:57,355 INFO L140 encePairwiseOnDemand]: 358/366 looper letters, 67 selfloop transitions, 12 changer transitions 0/259 dead transitions. [2024-10-13 09:54:57,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 259 transitions, 920 flow [2024-10-13 09:54:57,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:57,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:57,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 844 transitions. [2024-10-13 09:54:57,358 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7686703096539163 [2024-10-13 09:54:57,358 INFO L175 Difference]: Start difference. First operand has 225 places, 238 transitions, 683 flow. Second operand 3 states and 844 transitions. [2024-10-13 09:54:57,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 259 transitions, 920 flow [2024-10-13 09:54:57,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 259 transitions, 892 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 09:54:57,365 INFO L231 Difference]: Finished difference. Result has 227 places, 246 transitions, 769 flow [2024-10-13 09:54:57,366 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=769, PETRI_PLACES=227, PETRI_TRANSITIONS=246} [2024-10-13 09:54:57,367 INFO L277 CegarLoopForPetriNet]: 325 programPoint places, -98 predicate places. [2024-10-13 09:54:57,367 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 246 transitions, 769 flow [2024-10-13 09:54:57,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 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) [2024-10-13 09:54:57,368 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:57,368 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:57,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 09:54:57,368 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2024-10-13 09:54:57,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:57,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1442896868, now seen corresponding path program 1 times [2024-10-13 09:54:57,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:57,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061174809] [2024-10-13 09:54:57,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:57,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:54:57,391 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:54:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:54:57,419 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:54:57,419 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:54:57,419 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2024-10-13 09:54:57,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2024-10-13 09:54:57,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2024-10-13 09:54:57,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2024-10-13 09:54:57,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2024-10-13 09:54:57,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2024-10-13 09:54:57,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2024-10-13 09:54:57,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2024-10-13 09:54:57,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2024-10-13 09:54:57,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2024-10-13 09:54:57,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2024-10-13 09:54:57,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2024-10-13 09:54:57,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2024-10-13 09:54:57,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2024-10-13 09:54:57,422 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2024-10-13 09:54:57,422 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2024-10-13 09:54:57,422 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2024-10-13 09:54:57,422 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2024-10-13 09:54:57,422 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2024-10-13 09:54:57,422 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2024-10-13 09:54:57,422 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2024-10-13 09:54:57,422 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2024-10-13 09:54:57,422 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2024-10-13 09:54:57,422 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2024-10-13 09:54:57,422 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2024-10-13 09:54:57,423 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2024-10-13 09:54:57,423 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2024-10-13 09:54:57,423 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2024-10-13 09:54:57,423 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2024-10-13 09:54:57,423 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2024-10-13 09:54:57,423 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2024-10-13 09:54:57,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 09:54:57,423 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:57,424 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:54:57,424 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-13 09:54:57,465 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 09:54:57,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 407 places, 459 transitions, 945 flow [2024-10-13 09:54:57,620 INFO L124 PetriNetUnfolderBase]: 128/980 cut-off events. [2024-10-13 09:54:57,621 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-13 09:54:57,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1005 conditions, 980 events. 128/980 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 5135 event pairs, 1 based on Foata normal form. 0/796 useless extension candidates. Maximal degree in co-relation 682. Up to 16 conditions per place. [2024-10-13 09:54:57,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 407 places, 459 transitions, 945 flow [2024-10-13 09:54:57,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 407 places, 459 transitions, 945 flow [2024-10-13 09:54:57,657 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:54:57,658 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;@6d05d147, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:54:57,658 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-10-13 09:54:57,662 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:54:57,662 INFO L124 PetriNetUnfolderBase]: 2/61 cut-off events. [2024-10-13 09:54:57,662 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:54:57,663 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:57,663 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] [2024-10-13 09:54:57,663 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2024-10-13 09:54:57,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:57,663 INFO L85 PathProgramCache]: Analyzing trace with hash -132417425, now seen corresponding path program 1 times [2024-10-13 09:54:57,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:57,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364540277] [2024-10-13 09:54:57,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:57,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:57,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:57,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:57,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364540277] [2024-10-13 09:54:57,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364540277] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:57,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:57,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:54:57,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164162192] [2024-10-13 09:54:57,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:57,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:57,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:57,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:57,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:57,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 459 [2024-10-13 09:54:57,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 459 transitions, 945 flow. Second operand has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 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) [2024-10-13 09:54:57,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:57,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 459 [2024-10-13 09:54:57,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand