./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_73-funloop_hard_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version fca748b1 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_73-funloop_hard_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 c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 13:50:40,123 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 13:50:40,189 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-20 13:50:40,194 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 13:50:40,196 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 13:50:40,221 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 13:50:40,222 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 13:50:40,222 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 13:50:40,223 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 13:50:40,224 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 13:50:40,224 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 13:50:40,225 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 13:50:40,225 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 13:50:40,225 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 13:50:40,227 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 13:50:40,228 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 13:50:40,228 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 13:50:40,228 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 13:50:40,228 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 13:50:40,228 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 13:50:40,229 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 13:50:40,232 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 13:50:40,232 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-20 13:50:40,233 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 13:50:40,233 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 13:50:40,233 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 13:50:40,233 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 13:50:40,233 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 13:50:40,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 13:50:40,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 13:50:40,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 13:50:40,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:50:40,234 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 13:50:40,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 13:50:40,235 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 13:50:40,235 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 13:50:40,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 13:50:40,235 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 13:50:40,235 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 13:50:40,236 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 13:50:40,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 13:50:40,238 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 [2024-11-20 13:50:40,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 13:50:40,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 13:50:40,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 13:50:40,550 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 13:50:40,550 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 13:50:40,551 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2024-11-20 13:50:41,984 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 13:50:42,244 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 13:50:42,245 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2024-11-20 13:50:42,267 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bdee2833/807c4250e0d141e2ad0379141f9bb09d/FLAG9f359902d [2024-11-20 13:50:42,559 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bdee2833/807c4250e0d141e2ad0379141f9bb09d [2024-11-20 13:50:42,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 13:50:42,563 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 13:50:42,564 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 13:50:42,564 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 13:50:42,568 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 13:50:42,569 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:50:42" (1/1) ... [2024-11-20 13:50:42,570 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e1de8c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:42, skipping insertion in model container [2024-11-20 13:50:42,570 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:50:42" (1/1) ... [2024-11-20 13:50:42,617 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 13:50:43,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:50:43,209 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 13:50:43,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:50:43,317 INFO L204 MainTranslator]: Completed translation [2024-11-20 13:50:43,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:43 WrapperNode [2024-11-20 13:50:43,318 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 13:50:43,319 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 13:50:43,320 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 13:50:43,320 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 13:50:43,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:43" (1/1) ... [2024-11-20 13:50:43,345 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:43" (1/1) ... [2024-11-20 13:50:43,389 INFO L138 Inliner]: procedures = 272, calls = 110, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 448 [2024-11-20 13:50:43,389 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 13:50:43,390 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 13:50:43,391 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 13:50:43,391 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 13:50:43,399 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:43" (1/1) ... [2024-11-20 13:50:43,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:43" (1/1) ... [2024-11-20 13:50:43,409 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:43" (1/1) ... [2024-11-20 13:50:43,410 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:43" (1/1) ... [2024-11-20 13:50:43,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:43" (1/1) ... [2024-11-20 13:50:43,452 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:43" (1/1) ... [2024-11-20 13:50:43,457 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:43" (1/1) ... [2024-11-20 13:50:43,459 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:43" (1/1) ... [2024-11-20 13:50:43,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 13:50:43,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 13:50:43,464 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 13:50:43,464 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 13:50:43,466 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:43" (1/1) ... [2024-11-20 13:50:43,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:50:43,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:50:43,501 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) [2024-11-20 13:50:43,505 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 [2024-11-20 13:50:43,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 13:50:43,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 13:50:43,560 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-20 13:50:43,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-20 13:50:43,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-20 13:50:43,560 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-20 13:50:43,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 13:50:43,561 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-20 13:50:43,561 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-20 13:50:43,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-20 13:50:43,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 13:50:43,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 13:50:43,563 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 13:50:43,730 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 13:50:43,734 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 13:50:44,355 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 13:50:44,356 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 13:50:44,438 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 13:50:44,438 INFO L316 CfgBuilder]: Removed 35 assume(true) statements. [2024-11-20 13:50:44,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:50:44 BoogieIcfgContainer [2024-11-20 13:50:44,439 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 13:50:44,442 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 13:50:44,444 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 13:50:44,447 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 13:50:44,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:50:42" (1/3) ... [2024-11-20 13:50:44,448 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad2f0d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:50:44, skipping insertion in model container [2024-11-20 13:50:44,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:43" (2/3) ... [2024-11-20 13:50:44,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad2f0d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:50:44, skipping insertion in model container [2024-11-20 13:50:44,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:50:44" (3/3) ... [2024-11-20 13:50:44,451 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2024-11-20 13:50:44,467 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 13:50:44,467 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-11-20 13:50:44,467 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 13:50:44,562 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-20 13:50:44,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 404 places, 449 transitions, 905 flow [2024-11-20 13:50:44,850 INFO L124 PetriNetUnfolderBase]: 78/687 cut-off events. [2024-11-20 13:50:44,850 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 13:50:44,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 692 conditions, 687 events. 78/687 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3411 event pairs, 0 based on Foata normal form. 0/577 useless extension candidates. Maximal degree in co-relation 354. Up to 8 conditions per place. [2024-11-20 13:50:44,862 INFO L82 GeneralOperation]: Start removeDead. Operand has 404 places, 449 transitions, 905 flow [2024-11-20 13:50:44,872 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 404 places, 449 transitions, 905 flow [2024-11-20 13:50:44,884 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:50:44,890 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;@263c73e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:50:44,891 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-20 13:50:44,909 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 13:50:44,910 INFO L124 PetriNetUnfolderBase]: 4/119 cut-off events. [2024-11-20 13:50:44,910 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 13:50:44,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:44,911 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:44,912 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-20 13:50:44,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:44,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1892056923, now seen corresponding path program 1 times [2024-11-20 13:50:44,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:44,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066675402] [2024-11-20 13:50:44,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:44,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:50:45,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:50:45,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066675402] [2024-11-20 13:50:45,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066675402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:50:45,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:50:45,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 13:50:45,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622489180] [2024-11-20 13:50:45,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:50:45,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:50:45,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:50:45,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:50:45,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:50:45,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 449 [2024-11-20 13:50:45,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 449 transitions, 905 flow. Second operand has 3 states, 3 states have (on average 374.3333333333333) internal successors, (1123), 3 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:50:45,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:50:45,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 449 [2024-11-20 13:50:45,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:50:45,910 INFO L124 PetriNetUnfolderBase]: 181/2382 cut-off events. [2024-11-20 13:50:45,911 INFO L125 PetriNetUnfolderBase]: For 7/8 co-relation queries the response was YES. [2024-11-20 13:50:45,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2729 conditions, 2382 events. 181/2382 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 19868 event pairs, 136 based on Foata normal form. 404/2586 useless extension candidates. Maximal degree in co-relation 2390. Up to 340 conditions per place. [2024-11-20 13:50:45,957 INFO L140 encePairwiseOnDemand]: 405/449 looper letters, 31 selfloop transitions, 2 changer transitions 0/403 dead transitions. [2024-11-20 13:50:45,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 403 transitions, 879 flow [2024-11-20 13:50:45,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:50:45,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 13:50:45,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1195 transitions. [2024-11-20 13:50:45,979 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8871566443949518 [2024-11-20 13:50:45,983 INFO L175 Difference]: Start difference. First operand has 404 places, 449 transitions, 905 flow. Second operand 3 states and 1195 transitions. [2024-11-20 13:50:45,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 403 transitions, 879 flow [2024-11-20 13:50:45,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 403 transitions, 879 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 13:50:46,001 INFO L231 Difference]: Finished difference. Result has 401 places, 403 transitions, 823 flow [2024-11-20 13:50:46,004 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=823, PETRI_PLACES=401, PETRI_TRANSITIONS=403} [2024-11-20 13:50:46,007 INFO L277 CegarLoopForPetriNet]: 404 programPoint places, -3 predicate places. [2024-11-20 13:50:46,008 INFO L471 AbstractCegarLoop]: Abstraction has has 401 places, 403 transitions, 823 flow [2024-11-20 13:50:46,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 374.3333333333333) internal successors, (1123), 3 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:50:46,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:46,010 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:46,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 13:50:46,011 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-20 13:50:46,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:46,012 INFO L85 PathProgramCache]: Analyzing trace with hash -424746447, now seen corresponding path program 1 times [2024-11-20 13:50:46,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:46,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979639308] [2024-11-20 13:50:46,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:46,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:46,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:50:46,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:50:46,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979639308] [2024-11-20 13:50:46,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979639308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:50:46,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371743110] [2024-11-20 13:50:46,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:46,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:46,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:50:46,237 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) [2024-11-20 13:50:46,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 13:50:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:46,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 13:50:46,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:50:46,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:50:46,417 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:50:46,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:50:46,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371743110] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:50:46,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:50:46,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-20 13:50:46,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048045077] [2024-11-20 13:50:46,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:50:46,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 13:50:46,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:50:46,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 13:50:46,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 13:50:46,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 449 [2024-11-20 13:50:46,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 403 transitions, 823 flow. Second operand has 10 states, 10 states have (on average 371.8) internal successors, (3718), 10 states have internal predecessors, (3718), 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) [2024-11-20 13:50:46,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:50:46,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 449 [2024-11-20 13:50:46,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:50:47,070 INFO L124 PetriNetUnfolderBase]: 181/2389 cut-off events. [2024-11-20 13:50:47,070 INFO L125 PetriNetUnfolderBase]: For 8/9 co-relation queries the response was YES. [2024-11-20 13:50:47,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2755 conditions, 2389 events. 181/2389 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 19833 event pairs, 136 based on Foata normal form. 2/2191 useless extension candidates. Maximal degree in co-relation 2660. Up to 340 conditions per place. [2024-11-20 13:50:47,084 INFO L140 encePairwiseOnDemand]: 443/449 looper letters, 35 selfloop transitions, 9 changer transitions 0/411 dead transitions. [2024-11-20 13:50:47,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 411 transitions, 929 flow [2024-11-20 13:50:47,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 13:50:47,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 13:50:47,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3376 transitions. [2024-11-20 13:50:47,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8354367730759713 [2024-11-20 13:50:47,093 INFO L175 Difference]: Start difference. First operand has 401 places, 403 transitions, 823 flow. Second operand 9 states and 3376 transitions. [2024-11-20 13:50:47,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 411 transitions, 929 flow [2024-11-20 13:50:47,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 411 transitions, 927 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 13:50:47,102 INFO L231 Difference]: Finished difference. Result has 411 places, 409 transitions, 871 flow [2024-11-20 13:50:47,103 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=871, PETRI_PLACES=411, PETRI_TRANSITIONS=409} [2024-11-20 13:50:47,104 INFO L277 CegarLoopForPetriNet]: 404 programPoint places, 7 predicate places. [2024-11-20 13:50:47,104 INFO L471 AbstractCegarLoop]: Abstraction has has 411 places, 409 transitions, 871 flow [2024-11-20 13:50:47,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 371.8) internal successors, (3718), 10 states have internal predecessors, (3718), 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) [2024-11-20 13:50:47,107 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:47,107 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:47,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 13:50:47,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:47,308 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-20 13:50:47,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:47,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1050401679, now seen corresponding path program 2 times [2024-11-20 13:50:47,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:47,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267192856] [2024-11-20 13:50:47,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:47,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:47,528 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:50:47,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:50:47,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267192856] [2024-11-20 13:50:47,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267192856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:50:47,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098712353] [2024-11-20 13:50:47,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 13:50:47,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:47,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:50:47,535 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:50:47,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 13:50:47,642 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 13:50:47,642 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 13:50:47,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-20 13:50:47,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:50:47,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 13:50:47,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-20 13:50:47,857 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 13:50:47,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-20 13:50:47,914 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 13:50:47,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-20 13:50:47,957 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-20 13:50:47,958 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:50:47,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098712353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:50:47,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:50:47,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-11-20 13:50:47,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007408803] [2024-11-20 13:50:47,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:50:47,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 13:50:47,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:50:47,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 13:50:47,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-20 13:50:48,430 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 449 [2024-11-20 13:50:48,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 409 transitions, 871 flow. Second operand has 8 states, 8 states have (on average 301.125) internal successors, (2409), 8 states have internal predecessors, (2409), 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) [2024-11-20 13:50:48,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:50:48,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 449 [2024-11-20 13:50:48,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:50:49,844 INFO L124 PetriNetUnfolderBase]: 2276/8865 cut-off events. [2024-11-20 13:50:49,844 INFO L125 PetriNetUnfolderBase]: For 11/14 co-relation queries the response was YES. [2024-11-20 13:50:49,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13252 conditions, 8865 events. 2276/8865 cut-off events. For 11/14 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 89336 event pairs, 1932 based on Foata normal form. 1/8068 useless extension candidates. Maximal degree in co-relation 13128. Up to 4191 conditions per place. [2024-11-20 13:50:49,894 INFO L140 encePairwiseOnDemand]: 437/449 looper letters, 162 selfloop transitions, 11 changer transitions 0/477 dead transitions. [2024-11-20 13:50:49,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 477 transitions, 1353 flow [2024-11-20 13:50:49,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 13:50:49,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 13:50:49,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2575 transitions. [2024-11-20 13:50:49,900 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7168708240534521 [2024-11-20 13:50:49,901 INFO L175 Difference]: Start difference. First operand has 411 places, 409 transitions, 871 flow. Second operand 8 states and 2575 transitions. [2024-11-20 13:50:49,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 477 transitions, 1353 flow [2024-11-20 13:50:49,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 477 transitions, 1347 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-20 13:50:49,913 INFO L231 Difference]: Finished difference. Result has 422 places, 416 transitions, 932 flow [2024-11-20 13:50:49,914 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=932, PETRI_PLACES=422, PETRI_TRANSITIONS=416} [2024-11-20 13:50:49,915 INFO L277 CegarLoopForPetriNet]: 404 programPoint places, 18 predicate places. [2024-11-20 13:50:49,915 INFO L471 AbstractCegarLoop]: Abstraction has has 422 places, 416 transitions, 932 flow [2024-11-20 13:50:49,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 301.125) internal successors, (2409), 8 states have internal predecessors, (2409), 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) [2024-11-20 13:50:49,917 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:49,918 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:49,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 13:50:50,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-20 13:50:50,123 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-20 13:50:50,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:50,124 INFO L85 PathProgramCache]: Analyzing trace with hash -923239633, now seen corresponding path program 1 times [2024-11-20 13:50:50,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:50,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778378924] [2024-11-20 13:50:50,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:50,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:50,401 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 13:50:50,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:50:50,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778378924] [2024-11-20 13:50:50,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778378924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:50:50,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670071390] [2024-11-20 13:50:50,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:50,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:50,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:50:50,404 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:50:50,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 13:50:50,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:50,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 13:50:50,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:50:50,570 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 13:50:50,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:50:50,665 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 13:50:50,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670071390] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:50:50,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:50:50,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-20 13:50:50,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778201092] [2024-11-20 13:50:50,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:50:50,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 13:50:50,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:50:50,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 13:50:50,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-20 13:50:50,698 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 449 [2024-11-20 13:50:50,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 416 transitions, 932 flow. Second operand has 18 states, 18 states have (on average 371.94444444444446) internal successors, (6695), 18 states have internal predecessors, (6695), 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) [2024-11-20 13:50:50,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:50:50,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 449 [2024-11-20 13:50:50,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:50:51,292 INFO L124 PetriNetUnfolderBase]: 193/2363 cut-off events. [2024-11-20 13:50:51,293 INFO L125 PetriNetUnfolderBase]: For 33/38 co-relation queries the response was YES. [2024-11-20 13:50:51,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2868 conditions, 2363 events. 193/2363 cut-off events. For 33/38 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 19721 event pairs, 138 based on Foata normal form. 4/2172 useless extension candidates. Maximal degree in co-relation 2667. Up to 341 conditions per place. [2024-11-20 13:50:51,307 INFO L140 encePairwiseOnDemand]: 443/449 looper letters, 39 selfloop transitions, 21 changer transitions 0/434 dead transitions. [2024-11-20 13:50:51,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 434 transitions, 1140 flow [2024-11-20 13:50:51,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-20 13:50:51,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-20 13:50:51,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7834 transitions. [2024-11-20 13:50:51,327 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8308410223777707 [2024-11-20 13:50:51,327 INFO L175 Difference]: Start difference. First operand has 422 places, 416 transitions, 932 flow. Second operand 21 states and 7834 transitions. [2024-11-20 13:50:51,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 434 transitions, 1140 flow [2024-11-20 13:50:51,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 434 transitions, 1133 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 13:50:51,346 INFO L231 Difference]: Finished difference. Result has 445 places, 429 transitions, 1055 flow [2024-11-20 13:50:51,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1055, PETRI_PLACES=445, PETRI_TRANSITIONS=429} [2024-11-20 13:50:51,348 INFO L277 CegarLoopForPetriNet]: 404 programPoint places, 41 predicate places. [2024-11-20 13:50:51,348 INFO L471 AbstractCegarLoop]: Abstraction has has 445 places, 429 transitions, 1055 flow [2024-11-20 13:50:51,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 371.94444444444446) internal successors, (6695), 18 states have internal predecessors, (6695), 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) [2024-11-20 13:50:51,353 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:51,354 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:51,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 13:50:51,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:51,555 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-20 13:50:51,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:51,555 INFO L85 PathProgramCache]: Analyzing trace with hash 430944175, now seen corresponding path program 2 times [2024-11-20 13:50:51,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:51,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779147337] [2024-11-20 13:50:51,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:51,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:52,044 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 13:50:52,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:50:52,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779147337] [2024-11-20 13:50:52,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779147337] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:50:52,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114046485] [2024-11-20 13:50:52,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 13:50:52,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:52,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:50:52,049 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:50:52,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 13:50:52,157 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 13:50:52,157 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 13:50:52,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-20 13:50:52,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:50:52,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-20 13:50:52,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-20 13:50:52,250 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 13:50:52,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-11-20 13:50:52,298 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 13:50:52,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-11-20 13:50:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-20 13:50:52,341 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:50:52,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114046485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:50:52,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:50:52,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2024-11-20 13:50:52,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399815953] [2024-11-20 13:50:52,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:50:52,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 13:50:52,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:50:52,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 13:50:52,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2024-11-20 13:50:52,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 449 [2024-11-20 13:50:52,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 429 transitions, 1055 flow. Second operand has 6 states, 6 states have (on average 303.6666666666667) internal successors, (1822), 6 states have internal predecessors, (1822), 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) [2024-11-20 13:50:52,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:50:52,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 449 [2024-11-20 13:50:52,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:50:54,540 INFO L124 PetriNetUnfolderBase]: 2359/9114 cut-off events. [2024-11-20 13:50:54,540 INFO L125 PetriNetUnfolderBase]: For 374/381 co-relation queries the response was YES. [2024-11-20 13:50:54,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14191 conditions, 9114 events. 2359/9114 cut-off events. For 374/381 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 92146 event pairs, 1820 based on Foata normal form. 29/8376 useless extension candidates. Maximal degree in co-relation 13983. Up to 4319 conditions per place. [2024-11-20 13:50:54,590 INFO L140 encePairwiseOnDemand]: 422/449 looper letters, 135 selfloop transitions, 92 changer transitions 0/545 dead transitions. [2024-11-20 13:50:54,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 545 transitions, 1763 flow [2024-11-20 13:50:54,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:50:54,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 13:50:54,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2028 transitions. [2024-11-20 13:50:54,596 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7527839643652561 [2024-11-20 13:50:54,596 INFO L175 Difference]: Start difference. First operand has 445 places, 429 transitions, 1055 flow. Second operand 6 states and 2028 transitions. [2024-11-20 13:50:54,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 545 transitions, 1763 flow [2024-11-20 13:50:54,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 545 transitions, 1739 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-11-20 13:50:54,610 INFO L231 Difference]: Finished difference. Result has 449 places, 513 transitions, 1639 flow [2024-11-20 13:50:54,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1639, PETRI_PLACES=449, PETRI_TRANSITIONS=513} [2024-11-20 13:50:54,612 INFO L277 CegarLoopForPetriNet]: 404 programPoint places, 45 predicate places. [2024-11-20 13:50:54,612 INFO L471 AbstractCegarLoop]: Abstraction has has 449 places, 513 transitions, 1639 flow [2024-11-20 13:50:54,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 303.6666666666667) internal successors, (1822), 6 states have internal predecessors, (1822), 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) [2024-11-20 13:50:54,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:54,614 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:54,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-20 13:50:54,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:54,815 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-20 13:50:54,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:54,815 INFO L85 PathProgramCache]: Analyzing trace with hash 474368866, now seen corresponding path program 1 times [2024-11-20 13:50:54,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:54,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023392445] [2024-11-20 13:50:54,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:54,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:55,200 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-20 13:50:55,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:50:55,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023392445] [2024-11-20 13:50:55,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023392445] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:50:55,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163072878] [2024-11-20 13:50:55,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:55,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:55,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:50:55,204 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:50:55,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 13:50:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:55,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-20 13:50:55,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:50:55,383 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-20 13:50:55,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:50:55,646 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-20 13:50:55,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163072878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:50:55,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:50:55,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-11-20 13:50:55,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936814449] [2024-11-20 13:50:55,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:50:55,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-20 13:50:55,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:50:55,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-20 13:50:55,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-20 13:50:55,687 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 449 [2024-11-20 13:50:55,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 513 transitions, 1639 flow. Second operand has 23 states, 23 states have (on average 372.04347826086956) internal successors, (8557), 23 states have internal predecessors, (8557), 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) [2024-11-20 13:50:55,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:50:55,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 449 [2024-11-20 13:50:55,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:50:56,515 INFO L124 PetriNetUnfolderBase]: 350/3142 cut-off events. [2024-11-20 13:50:56,515 INFO L125 PetriNetUnfolderBase]: For 546/615 co-relation queries the response was YES. [2024-11-20 13:50:56,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4901 conditions, 3142 events. 350/3142 cut-off events. For 546/615 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 28044 event pairs, 136 based on Foata normal form. 3/2908 useless extension candidates. Maximal degree in co-relation 4613. Up to 598 conditions per place. [2024-11-20 13:50:56,536 INFO L140 encePairwiseOnDemand]: 443/449 looper letters, 42 selfloop transitions, 30 changer transitions 0/530 dead transitions. [2024-11-20 13:50:56,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 530 transitions, 1905 flow [2024-11-20 13:50:56,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-20 13:50:56,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-20 13:50:56,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 11175 transitions. [2024-11-20 13:50:56,563 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8296213808463252 [2024-11-20 13:50:56,563 INFO L175 Difference]: Start difference. First operand has 449 places, 513 transitions, 1639 flow. Second operand 30 states and 11175 transitions. [2024-11-20 13:50:56,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 530 transitions, 1905 flow [2024-11-20 13:50:56,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 530 transitions, 1887 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-11-20 13:50:56,582 INFO L231 Difference]: Finished difference. Result has 482 places, 523 transitions, 1773 flow [2024-11-20 13:50:56,583 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=1621, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1773, PETRI_PLACES=482, PETRI_TRANSITIONS=523} [2024-11-20 13:50:56,583 INFO L277 CegarLoopForPetriNet]: 404 programPoint places, 78 predicate places. [2024-11-20 13:50:56,584 INFO L471 AbstractCegarLoop]: Abstraction has has 482 places, 523 transitions, 1773 flow [2024-11-20 13:50:56,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 372.04347826086956) internal successors, (8557), 23 states have internal predecessors, (8557), 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) [2024-11-20 13:50:56,587 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:56,588 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:56,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 13:50:56,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:56,792 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-20 13:50:56,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:56,793 INFO L85 PathProgramCache]: Analyzing trace with hash 600129272, now seen corresponding path program 2 times [2024-11-20 13:50:56,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:56,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336676237] [2024-11-20 13:50:56,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:56,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:50:56,847 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 13:50:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:50:56,912 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 13:50:56,912 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 13:50:56,913 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-11-20 13:50:56,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2024-11-20 13:50:56,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2024-11-20 13:50:56,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2024-11-20 13:50:56,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2024-11-20 13:50:56,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2024-11-20 13:50:56,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2024-11-20 13:50:56,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2024-11-20 13:50:56,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2024-11-20 13:50:56,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2024-11-20 13:50:56,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2024-11-20 13:50:56,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2024-11-20 13:50:56,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2024-11-20 13:50:56,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2024-11-20 13:50:56,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2024-11-20 13:50:56,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2024-11-20 13:50:56,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2024-11-20 13:50:56,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2024-11-20 13:50:56,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2024-11-20 13:50:56,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2024-11-20 13:50:56,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2024-11-20 13:50:56,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2024-11-20 13:50:56,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2024-11-20 13:50:56,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 13:50:56,924 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1] [2024-11-20 13:50:56,927 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 13:50:56,929 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-20 13:50:56,987 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 13:50:57,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 505 places, 564 transitions, 1144 flow [2024-11-20 13:50:57,178 INFO L124 PetriNetUnfolderBase]: 126/1068 cut-off events. [2024-11-20 13:50:57,179 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-20 13:50:57,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1080 conditions, 1068 events. 126/1068 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6186 event pairs, 0 based on Foata normal form. 0/891 useless extension candidates. Maximal degree in co-relation 689. Up to 12 conditions per place. [2024-11-20 13:50:57,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 505 places, 564 transitions, 1144 flow [2024-11-20 13:50:57,205 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 505 places, 564 transitions, 1144 flow [2024-11-20 13:50:57,206 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:50:57,207 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;@263c73e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:50:57,207 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-11-20 13:50:57,215 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 13:50:57,215 INFO L124 PetriNetUnfolderBase]: 4/119 cut-off events. [2024-11-20 13:50:57,215 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 13:50:57,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:57,215 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:57,216 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-11-20 13:50:57,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:57,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1276581519, now seen corresponding path program 1 times [2024-11-20 13:50:57,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:57,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683871908] [2024-11-20 13:50:57,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:57,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:57,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:50:57,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:50:57,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683871908] [2024-11-20 13:50:57,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683871908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:50:57,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:50:57,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 13:50:57,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919844354] [2024-11-20 13:50:57,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:50:57,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:50:57,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:50:57,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:50:57,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:50:57,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 464 out of 564 [2024-11-20 13:50:57,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 564 transitions, 1144 flow. Second operand has 3 states, 3 states have (on average 465.3333333333333) internal successors, (1396), 3 states have internal predecessors, (1396), 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) [2024-11-20 13:50:57,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:50:57,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 464 of 564 [2024-11-20 13:50:57,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:51:00,838 INFO L124 PetriNetUnfolderBase]: 3251/22887 cut-off events. [2024-11-20 13:51:00,839 INFO L125 PetriNetUnfolderBase]: For 153/157 co-relation queries the response was YES. [2024-11-20 13:51:00,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27667 conditions, 22887 events. 3251/22887 cut-off events. For 153/157 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 311246 event pairs, 2680 based on Foata normal form. 5658/26656 useless extension candidates. Maximal degree in co-relation 24734. Up to 4707 conditions per place. [2024-11-20 13:51:01,008 INFO L140 encePairwiseOnDemand]: 507/564 looper letters, 41 selfloop transitions, 2 changer transitions 0/503 dead transitions. [2024-11-20 13:51:01,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 503 transitions, 1108 flow [2024-11-20 13:51:01,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:51:01,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 13:51:01,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1491 transitions. [2024-11-20 13:51:01,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8812056737588653 [2024-11-20 13:51:01,013 INFO L175 Difference]: Start difference. First operand has 505 places, 564 transitions, 1144 flow. Second operand 3 states and 1491 transitions. [2024-11-20 13:51:01,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 503 transitions, 1108 flow [2024-11-20 13:51:01,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 503 transitions, 1108 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 13:51:01,023 INFO L231 Difference]: Finished difference. Result has 500 places, 503 transitions, 1032 flow [2024-11-20 13:51:01,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1032, PETRI_PLACES=500, PETRI_TRANSITIONS=503} [2024-11-20 13:51:01,024 INFO L277 CegarLoopForPetriNet]: 505 programPoint places, -5 predicate places. [2024-11-20 13:51:01,025 INFO L471 AbstractCegarLoop]: Abstraction has has 500 places, 503 transitions, 1032 flow [2024-11-20 13:51:01,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 465.3333333333333) internal successors, (1396), 3 states have internal predecessors, (1396), 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) [2024-11-20 13:51:01,026 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:51:01,026 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:51:01,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 13:51:01,026 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-11-20 13:51:01,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:51:01,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1040883535, now seen corresponding path program 1 times [2024-11-20 13:51:01,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:51:01,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990502960] [2024-11-20 13:51:01,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:51:01,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:51:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:51:01,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:51:01,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:51:01,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990502960] [2024-11-20 13:51:01,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990502960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:51:01,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751824414] [2024-11-20 13:51:01,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:51:01,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:51:01,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:51:01,133 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:51:01,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 13:51:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:51:01,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 13:51:01,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:51:01,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:51:01,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:51:01,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:51:01,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751824414] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:51:01,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:51:01,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-20 13:51:01,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653780636] [2024-11-20 13:51:01,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:51:01,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 13:51:01,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:51:01,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 13:51:01,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 13:51:01,327 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 461 out of 564 [2024-11-20 13:51:01,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 503 transitions, 1032 flow. Second operand has 10 states, 10 states have (on average 462.8) internal successors, (4628), 10 states have internal predecessors, (4628), 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) [2024-11-20 13:51:01,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:51:01,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 461 of 564 [2024-11-20 13:51:01,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:51:04,480 INFO L124 PetriNetUnfolderBase]: 3251/22894 cut-off events. [2024-11-20 13:51:04,480 INFO L125 PetriNetUnfolderBase]: For 150/154 co-relation queries the response was YES. [2024-11-20 13:51:04,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27693 conditions, 22894 events. 3251/22894 cut-off events. For 150/154 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 311010 event pairs, 2680 based on Foata normal form. 2/21007 useless extension candidates. Maximal degree in co-relation 27597. Up to 4707 conditions per place. [2024-11-20 13:51:04,936 INFO L140 encePairwiseOnDemand]: 558/564 looper letters, 45 selfloop transitions, 9 changer transitions 0/511 dead transitions. [2024-11-20 13:51:04,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 511 transitions, 1158 flow [2024-11-20 13:51:04,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 13:51:04,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 13:51:04,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4205 transitions. [2024-11-20 13:51:04,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.828408195429472 [2024-11-20 13:51:04,963 INFO L175 Difference]: Start difference. First operand has 500 places, 503 transitions, 1032 flow. Second operand 9 states and 4205 transitions. [2024-11-20 13:51:04,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 511 transitions, 1158 flow [2024-11-20 13:51:04,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 511 transitions, 1156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 13:51:04,987 INFO L231 Difference]: Finished difference. Result has 510 places, 509 transitions, 1080 flow [2024-11-20 13:51:04,991 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1080, PETRI_PLACES=510, PETRI_TRANSITIONS=509} [2024-11-20 13:51:04,992 INFO L277 CegarLoopForPetriNet]: 505 programPoint places, 5 predicate places. [2024-11-20 13:51:04,993 INFO L471 AbstractCegarLoop]: Abstraction has has 510 places, 509 transitions, 1080 flow [2024-11-20 13:51:04,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 462.8) internal successors, (4628), 10 states have internal predecessors, (4628), 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) [2024-11-20 13:51:04,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:51:04,996 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:51:05,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 13:51:05,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:51:05,200 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-11-20 13:51:05,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:51:05,201 INFO L85 PathProgramCache]: Analyzing trace with hash -505175183, now seen corresponding path program 2 times [2024-11-20 13:51:05,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:51:05,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303637397] [2024-11-20 13:51:05,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:51:05,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:51:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:51:05,380 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:51:05,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:51:05,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303637397] [2024-11-20 13:51:05,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303637397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:51:05,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188607856] [2024-11-20 13:51:05,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 13:51:05,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:51:05,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:51:05,386 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:51:05,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 13:51:05,502 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 13:51:05,502 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 13:51:05,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-20 13:51:05,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:51:05,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 13:51:05,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-20 13:51:05,629 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 13:51:05,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-20 13:51:05,669 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 13:51:05,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-20 13:51:05,707 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-20 13:51:05,708 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:51:05,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188607856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:51:05,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:51:05,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-11-20 13:51:05,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146919209] [2024-11-20 13:51:05,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:51:05,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 13:51:05,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:51:05,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 13:51:05,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-20 13:51:06,243 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 371 out of 564 [2024-11-20 13:51:06,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 509 transitions, 1080 flow. Second operand has 8 states, 8 states have (on average 372.125) internal successors, (2977), 8 states have internal predecessors, (2977), 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) [2024-11-20 13:51:06,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:51:06,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 371 of 564 [2024-11-20 13:51:06,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand