./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/09_fmaxsym-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/pthread-ext/09_fmaxsym-race.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 f225ad0ddd29038af28d51fbbac3525492e9437e240dca78f58919375937976a --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 06:30:34,104 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:30:34,171 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-09 06:30:34,177 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:30:34,178 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:30:34,209 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:30:34,210 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:30:34,211 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:30:34,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:30:34,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:30:34,213 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 06:30:34,213 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 06:30:34,213 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 06:30:34,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:30:34,214 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:30:34,215 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:30:34,215 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:30:34,215 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:30:34,216 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:30:34,216 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:30:34,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:30:34,217 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:30:34,218 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-09 06:30:34,218 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:30:34,218 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 06:30:34,219 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:30:34,219 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:30:34,219 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:30:34,220 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:30:34,220 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 06:30:34,221 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:30:34,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 06:30:34,221 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:30:34,222 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:30:34,222 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:30:34,222 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 06:30:34,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:30:34,223 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:30:34,224 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 06:30:34,224 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 06:30:34,225 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:30:34,225 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f225ad0ddd29038af28d51fbbac3525492e9437e240dca78f58919375937976a [2024-11-09 06:30:34,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:30:34,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:30:34,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:30:34,608 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:30:34,610 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:30:34,612 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/09_fmaxsym-race.i [2024-11-09 06:30:36,212 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:30:36,507 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:30:36,508 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-race.i [2024-11-09 06:30:36,524 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db97155e/c48ed3a411dd4fa4bff302e53c09ec95/FLAG31a81e1a2 [2024-11-09 06:30:36,812 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db97155e/c48ed3a411dd4fa4bff302e53c09ec95 [2024-11-09 06:30:36,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:30:36,816 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:30:36,817 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:30:36,818 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:30:36,826 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:30:36,828 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:30:36" (1/1) ... [2024-11-09 06:30:36,831 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13e08990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:36, skipping insertion in model container [2024-11-09 06:30:36,832 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:30:36" (1/1) ... [2024-11-09 06:30:36,891 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:30:37,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:30:37,325 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:30:37,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:30:37,440 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:30:37,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:37 WrapperNode [2024-11-09 06:30:37,441 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:30:37,442 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:30:37,442 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:30:37,442 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:30:37,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:37" (1/1) ... [2024-11-09 06:30:37,492 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:37" (1/1) ... [2024-11-09 06:30:37,525 INFO L138 Inliner]: procedures = 164, calls = 27, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 106 [2024-11-09 06:30:37,526 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:30:37,527 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:30:37,527 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:30:37,527 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:30:37,537 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:37" (1/1) ... [2024-11-09 06:30:37,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:37" (1/1) ... [2024-11-09 06:30:37,544 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:37" (1/1) ... [2024-11-09 06:30:37,544 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:37" (1/1) ... [2024-11-09 06:30:37,560 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:37" (1/1) ... [2024-11-09 06:30:37,568 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:37" (1/1) ... [2024-11-09 06:30:37,574 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:37" (1/1) ... [2024-11-09 06:30:37,576 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:37" (1/1) ... [2024-11-09 06:30:37,580 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:30:37,581 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:30:37,581 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:30:37,581 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:30:37,584 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:37" (1/1) ... [2024-11-09 06:30:37,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 06:30:37,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:30:37,633 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 06:30:37,642 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 [2024-11-09 06:30:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 06:30:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-09 06:30:37,702 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-09 06:30:37,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 06:30:37,702 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 06:30:37,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:30:37,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:30:37,703 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 06:30:37,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:30:37,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:30:37,705 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 06:30:37,883 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:30:37,886 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:30:38,145 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 06:30:38,145 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:30:38,182 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:30:38,183 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-09 06:30:38,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:30:38 BoogieIcfgContainer [2024-11-09 06:30:38,184 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:30:38,188 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:30:38,189 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:30:38,193 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:30:38,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:30:36" (1/3) ... [2024-11-09 06:30:38,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c4003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:30:38, skipping insertion in model container [2024-11-09 06:30:38,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:37" (2/3) ... [2024-11-09 06:30:38,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c4003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:30:38, skipping insertion in model container [2024-11-09 06:30:38,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:30:38" (3/3) ... [2024-11-09 06:30:38,198 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym-race.i [2024-11-09 06:30:38,218 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:30:38,219 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-11-09 06:30:38,220 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 06:30:38,315 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 06:30:38,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 120 transitions, 244 flow [2024-11-09 06:30:38,440 INFO L124 PetriNetUnfolderBase]: 10/129 cut-off events. [2024-11-09 06:30:38,440 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 06:30:38,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 129 events. 10/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 75. Up to 4 conditions per place. [2024-11-09 06:30:38,449 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 120 transitions, 244 flow [2024-11-09 06:30:38,455 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 120 transitions, 244 flow [2024-11-09 06:30:38,467 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:30:38,476 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;@47c21c18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:30:38,476 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-09 06:30:38,492 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 06:30:38,493 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-09 06:30:38,493 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 06:30:38,493 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:38,495 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] [2024-11-09 06:30:38,496 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-09 06:30:38,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:38,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1641584455, now seen corresponding path program 1 times [2024-11-09 06:30:38,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:38,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983483280] [2024-11-09 06:30:38,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:38,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:39,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:30:39,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:39,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983483280] [2024-11-09 06:30:39,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983483280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:30:39,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:30:39,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:30:39,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187012634] [2024-11-09 06:30:39,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:30:39,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:30:39,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:39,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:30:39,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:30:39,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 120 [2024-11-09 06:30:39,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 120 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 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) [2024-11-09 06:30:39,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:39,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 120 [2024-11-09 06:30:39,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:39,919 INFO L124 PetriNetUnfolderBase]: 3/111 cut-off events. [2024-11-09 06:30:39,920 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 06:30:39,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 111 events. 3/111 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 13/115 useless extension candidates. Maximal degree in co-relation 70. Up to 14 conditions per place. [2024-11-09 06:30:39,923 INFO L140 encePairwiseOnDemand]: 107/120 looper letters, 13 selfloop transitions, 5 changer transitions 0/107 dead transitions. [2024-11-09 06:30:39,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 107 transitions, 254 flow [2024-11-09 06:30:39,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:30:39,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 06:30:39,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 578 transitions. [2024-11-09 06:30:39,944 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8027777777777778 [2024-11-09 06:30:39,947 INFO L175 Difference]: Start difference. First operand has 114 places, 120 transitions, 244 flow. Second operand 6 states and 578 transitions. [2024-11-09 06:30:39,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 107 transitions, 254 flow [2024-11-09 06:30:39,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 107 transitions, 254 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 06:30:39,957 INFO L231 Difference]: Finished difference. Result has 112 places, 107 transitions, 228 flow [2024-11-09 06:30:39,960 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=228, PETRI_PLACES=112, PETRI_TRANSITIONS=107} [2024-11-09 06:30:39,965 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -2 predicate places. [2024-11-09 06:30:39,966 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 107 transitions, 228 flow [2024-11-09 06:30:39,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 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) [2024-11-09 06:30:39,967 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:39,967 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-09 06:30:39,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:30:39,967 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-09 06:30:39,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:39,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1210924523, now seen corresponding path program 1 times [2024-11-09 06:30:39,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:39,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252905091] [2024-11-09 06:30:39,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:39,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:40,035 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:30:40,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:40,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252905091] [2024-11-09 06:30:40,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252905091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:30:40,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:30:40,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:30:40,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786595050] [2024-11-09 06:30:40,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:30:40,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:30:40,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:40,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:30:40,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:30:40,079 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 120 [2024-11-09 06:30:40,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 107 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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) [2024-11-09 06:30:40,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:40,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 120 [2024-11-09 06:30:40,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:40,114 INFO L124 PetriNetUnfolderBase]: 3/123 cut-off events. [2024-11-09 06:30:40,114 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 06:30:40,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 123 events. 3/123 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 1/116 useless extension candidates. Maximal degree in co-relation 86. Up to 9 conditions per place. [2024-11-09 06:30:40,116 INFO L140 encePairwiseOnDemand]: 117/120 looper letters, 7 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2024-11-09 06:30:40,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 108 transitions, 250 flow [2024-11-09 06:30:40,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:30:40,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 06:30:40,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2024-11-09 06:30:40,118 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8861111111111111 [2024-11-09 06:30:40,119 INFO L175 Difference]: Start difference. First operand has 112 places, 107 transitions, 228 flow. Second operand 3 states and 319 transitions. [2024-11-09 06:30:40,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 108 transitions, 250 flow [2024-11-09 06:30:40,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 108 transitions, 238 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 06:30:40,123 INFO L231 Difference]: Finished difference. Result has 110 places, 108 transitions, 230 flow [2024-11-09 06:30:40,124 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=110, PETRI_TRANSITIONS=108} [2024-11-09 06:30:40,125 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -4 predicate places. [2024-11-09 06:30:40,125 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 108 transitions, 230 flow [2024-11-09 06:30:40,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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) [2024-11-09 06:30:40,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:40,126 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-09 06:30:40,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:30:40,127 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-09 06:30:40,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:40,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1447464402, now seen corresponding path program 1 times [2024-11-09 06:30:40,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:40,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656166524] [2024-11-09 06:30:40,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:40,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:40,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:30:40,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:40,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656166524] [2024-11-09 06:30:40,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656166524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:40,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110713525] [2024-11-09 06:30:40,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:40,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:40,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:30:40,268 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) [2024-11-09 06:30:40,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:30:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:40,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:30:40,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:30:40,466 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:30:40,494 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:30:40,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:30:40,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110713525] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:30:40,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:30:40,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-09 06:30:40,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980595302] [2024-11-09 06:30:40,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:30:40,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:30:40,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:40,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:30:40,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:30:40,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 120 [2024-11-09 06:30:40,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 108 transitions, 230 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 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) [2024-11-09 06:30:40,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:40,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 120 [2024-11-09 06:30:40,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:40,800 INFO L124 PetriNetUnfolderBase]: 3/138 cut-off events. [2024-11-09 06:30:40,803 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 06:30:40,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 138 events. 3/138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 2/132 useless extension candidates. Maximal degree in co-relation 121. Up to 9 conditions per place. [2024-11-09 06:30:40,805 INFO L140 encePairwiseOnDemand]: 114/120 looper letters, 11 selfloop transitions, 9 changer transitions 0/116 dead transitions. [2024-11-09 06:30:40,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 116 transitions, 288 flow [2024-11-09 06:30:40,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:30:40,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 06:30:40,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 922 transitions. [2024-11-09 06:30:40,809 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8537037037037037 [2024-11-09 06:30:40,810 INFO L175 Difference]: Start difference. First operand has 110 places, 108 transitions, 230 flow. Second operand 9 states and 922 transitions. [2024-11-09 06:30:40,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 116 transitions, 288 flow [2024-11-09 06:30:40,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 116 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 06:30:40,814 INFO L231 Difference]: Finished difference. Result has 120 places, 114 transitions, 278 flow [2024-11-09 06:30:40,814 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=278, PETRI_PLACES=120, PETRI_TRANSITIONS=114} [2024-11-09 06:30:40,815 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 6 predicate places. [2024-11-09 06:30:40,815 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 114 transitions, 278 flow [2024-11-09 06:30:40,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 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) [2024-11-09 06:30:40,817 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:40,817 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 06:30:40,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 06:30:41,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:41,022 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-09 06:30:41,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:41,023 INFO L85 PathProgramCache]: Analyzing trace with hash 400038222, now seen corresponding path program 2 times [2024-11-09 06:30:41,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:41,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605312957] [2024-11-09 06:30:41,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:41,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:41,250 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:30:41,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:41,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605312957] [2024-11-09 06:30:41,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605312957] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:41,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936481629] [2024-11-09 06:30:41,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:30:41,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:41,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:30:41,254 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) [2024-11-09 06:30:41,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:30:41,365 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:30:41,366 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:30:41,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:30:41,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:30:41,487 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:30:41,488 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:30:41,645 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:30:41,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936481629] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:30:41,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:30:41,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-09 06:30:41,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378115116] [2024-11-09 06:30:41,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:30:41,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 06:30:41,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:41,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 06:30:41,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:30:41,747 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 120 [2024-11-09 06:30:41,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 114 transitions, 278 flow. Second operand has 15 states, 15 states have (on average 102.06666666666666) internal successors, (1531), 15 states have internal predecessors, (1531), 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) [2024-11-09 06:30:41,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:41,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 120 [2024-11-09 06:30:41,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:41,999 INFO L124 PetriNetUnfolderBase]: 3/177 cut-off events. [2024-11-09 06:30:42,000 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-09 06:30:42,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 177 events. 3/177 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 3/172 useless extension candidates. Maximal degree in co-relation 186. Up to 9 conditions per place. [2024-11-09 06:30:42,003 INFO L140 encePairwiseOnDemand]: 114/120 looper letters, 14 selfloop transitions, 18 changer transitions 0/128 dead transitions. [2024-11-09 06:30:42,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 128 transitions, 416 flow [2024-11-09 06:30:42,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 06:30:42,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 06:30:42,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1835 transitions. [2024-11-09 06:30:42,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8495370370370371 [2024-11-09 06:30:42,010 INFO L175 Difference]: Start difference. First operand has 120 places, 114 transitions, 278 flow. Second operand 18 states and 1835 transitions. [2024-11-09 06:30:42,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 128 transitions, 416 flow [2024-11-09 06:30:42,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 128 transitions, 404 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-09 06:30:42,017 INFO L231 Difference]: Finished difference. Result has 140 places, 124 transitions, 378 flow [2024-11-09 06:30:42,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=378, PETRI_PLACES=140, PETRI_TRANSITIONS=124} [2024-11-09 06:30:42,019 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 26 predicate places. [2024-11-09 06:30:42,019 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 124 transitions, 378 flow [2024-11-09 06:30:42,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 102.06666666666666) internal successors, (1531), 15 states have internal predecessors, (1531), 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) [2024-11-09 06:30:42,020 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:42,020 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2024-11-09 06:30:42,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 06:30:42,221 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,SelfDestructingSolverStorable3 [2024-11-09 06:30:42,221 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-09 06:30:42,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:42,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1433336693, now seen corresponding path program 3 times [2024-11-09 06:30:42,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:42,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235474645] [2024-11-09 06:30:42,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:42,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:30:42,288 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:30:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:30:42,353 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 06:30:42,353 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:30:42,355 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-09 06:30:42,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-11-09 06:30:42,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-11-09 06:30:42,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-11-09 06:30:42,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-11-09 06:30:42,359 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-11-09 06:30:42,359 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-11-09 06:30:42,359 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-11-09 06:30:42,359 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-11-09 06:30:42,359 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-11-09 06:30:42,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 06:30:42,360 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-09 06:30:42,365 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 06:30:42,366 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 06:30:42,422 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 06:30:42,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 185 transitions, 380 flow [2024-11-09 06:30:42,459 INFO L124 PetriNetUnfolderBase]: 17/205 cut-off events. [2024-11-09 06:30:42,459 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 06:30:42,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 205 events. 17/205 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 363 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 139. Up to 6 conditions per place. [2024-11-09 06:30:42,463 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 185 transitions, 380 flow [2024-11-09 06:30:42,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 185 transitions, 380 flow [2024-11-09 06:30:42,467 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:30:42,468 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;@47c21c18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:30:42,471 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-09 06:30:42,476 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 06:30:42,477 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-09 06:30:42,477 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 06:30:42,477 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:42,477 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] [2024-11-09 06:30:42,477 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-09 06:30:42,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:42,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1499362016, now seen corresponding path program 1 times [2024-11-09 06:30:42,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:42,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364455616] [2024-11-09 06:30:42,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:42,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:30:42,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:42,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364455616] [2024-11-09 06:30:42,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364455616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:30:42,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:30:42,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:30:42,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117801039] [2024-11-09 06:30:42,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:30:42,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:30:42,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:42,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:30:42,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:30:42,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 185 [2024-11-09 06:30:42,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 185 transitions, 380 flow. Second operand has 6 states, 6 states have (on average 146.5) internal successors, (879), 6 states have internal predecessors, (879), 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) [2024-11-09 06:30:42,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:42,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 185 [2024-11-09 06:30:42,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:43,055 INFO L124 PetriNetUnfolderBase]: 68/569 cut-off events. [2024-11-09 06:30:43,056 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-09 06:30:43,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 717 conditions, 569 events. 68/569 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2651 event pairs, 42 based on Foata normal form. 108/588 useless extension candidates. Maximal degree in co-relation 462. Up to 117 conditions per place. [2024-11-09 06:30:43,065 INFO L140 encePairwiseOnDemand]: 168/185 looper letters, 20 selfloop transitions, 5 changer transitions 0/166 dead transitions. [2024-11-09 06:30:43,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 166 transitions, 392 flow [2024-11-09 06:30:43,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:30:43,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 06:30:43,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 907 transitions. [2024-11-09 06:30:43,068 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8171171171171171 [2024-11-09 06:30:43,068 INFO L175 Difference]: Start difference. First operand has 175 places, 185 transitions, 380 flow. Second operand 6 states and 907 transitions. [2024-11-09 06:30:43,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 166 transitions, 392 flow [2024-11-09 06:30:43,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 166 transitions, 392 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 06:30:43,072 INFO L231 Difference]: Finished difference. Result has 171 places, 166 transitions, 352 flow [2024-11-09 06:30:43,072 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=352, PETRI_PLACES=171, PETRI_TRANSITIONS=166} [2024-11-09 06:30:43,073 INFO L277 CegarLoopForPetriNet]: 175 programPoint places, -4 predicate places. [2024-11-09 06:30:43,073 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 166 transitions, 352 flow [2024-11-09 06:30:43,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.5) internal successors, (879), 6 states have internal predecessors, (879), 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) [2024-11-09 06:30:43,074 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:43,075 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2024-11-09 06:30:43,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 06:30:43,075 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-09 06:30:43,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:43,076 INFO L85 PathProgramCache]: Analyzing trace with hash 703893676, now seen corresponding path program 1 times [2024-11-09 06:30:43,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:43,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15063726] [2024-11-09 06:30:43,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:43,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 06:30:43,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:43,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15063726] [2024-11-09 06:30:43,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15063726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:30:43,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:30:43,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:30:43,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52062653] [2024-11-09 06:30:43,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:30:43,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:30:43,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:43,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:30:43,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:30:43,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 185 [2024-11-09 06:30:43,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 166 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 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) [2024-11-09 06:30:43,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:43,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 185 [2024-11-09 06:30:43,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:43,199 INFO L124 PetriNetUnfolderBase]: 15/326 cut-off events. [2024-11-09 06:30:43,199 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-09 06:30:43,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 326 events. 15/326 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 908 event pairs, 6 based on Foata normal form. 1/294 useless extension candidates. Maximal degree in co-relation 313. Up to 24 conditions per place. [2024-11-09 06:30:43,203 INFO L140 encePairwiseOnDemand]: 182/185 looper letters, 10 selfloop transitions, 2 changer transitions 0/167 dead transitions. [2024-11-09 06:30:43,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 167 transitions, 380 flow [2024-11-09 06:30:43,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:30:43,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 06:30:43,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 493 transitions. [2024-11-09 06:30:43,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8882882882882883 [2024-11-09 06:30:43,206 INFO L175 Difference]: Start difference. First operand has 171 places, 166 transitions, 352 flow. Second operand 3 states and 493 transitions. [2024-11-09 06:30:43,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 167 transitions, 380 flow [2024-11-09 06:30:43,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 167 transitions, 368 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 06:30:43,210 INFO L231 Difference]: Finished difference. Result has 169 places, 167 transitions, 354 flow [2024-11-09 06:30:43,210 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=169, PETRI_TRANSITIONS=167} [2024-11-09 06:30:43,211 INFO L277 CegarLoopForPetriNet]: 175 programPoint places, -6 predicate places. [2024-11-09 06:30:43,211 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 167 transitions, 354 flow [2024-11-09 06:30:43,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 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) [2024-11-09 06:30:43,212 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:43,212 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2024-11-09 06:30:43,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 06:30:43,213 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-09 06:30:43,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:43,213 INFO L85 PathProgramCache]: Analyzing trace with hash 963143664, now seen corresponding path program 1 times [2024-11-09 06:30:43,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:43,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950502165] [2024-11-09 06:30:43,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:43,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 06:30:43,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:43,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950502165] [2024-11-09 06:30:43,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950502165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:43,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115836749] [2024-11-09 06:30:43,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:43,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:43,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:30:43,300 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) [2024-11-09 06:30:43,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 06:30:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:43,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:30:43,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:30:43,427 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 06:30:43,427 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:30:43,478 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 06:30:43,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115836749] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:30:43,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:30:43,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-09 06:30:43,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086059010] [2024-11-09 06:30:43,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:30:43,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:30:43,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:43,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:30:43,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:30:43,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 185 [2024-11-09 06:30:43,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 167 transitions, 354 flow. Second operand has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 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) [2024-11-09 06:30:43,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:43,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 185 [2024-11-09 06:30:43,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:43,697 INFO L124 PetriNetUnfolderBase]: 15/341 cut-off events. [2024-11-09 06:30:43,697 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-09 06:30:43,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 341 events. 15/341 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 883 event pairs, 6 based on Foata normal form. 2/310 useless extension candidates. Maximal degree in co-relation 348. Up to 24 conditions per place. [2024-11-09 06:30:43,701 INFO L140 encePairwiseOnDemand]: 179/185 looper letters, 14 selfloop transitions, 9 changer transitions 0/175 dead transitions. [2024-11-09 06:30:43,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 175 transitions, 418 flow [2024-11-09 06:30:43,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:30:43,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 06:30:43,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1438 transitions. [2024-11-09 06:30:43,705 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8636636636636636 [2024-11-09 06:30:43,706 INFO L175 Difference]: Start difference. First operand has 169 places, 167 transitions, 354 flow. Second operand 9 states and 1438 transitions. [2024-11-09 06:30:43,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 175 transitions, 418 flow [2024-11-09 06:30:43,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 175 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 06:30:43,709 INFO L231 Difference]: Finished difference. Result has 179 places, 173 transitions, 402 flow [2024-11-09 06:30:43,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=402, PETRI_PLACES=179, PETRI_TRANSITIONS=173} [2024-11-09 06:30:43,711 INFO L277 CegarLoopForPetriNet]: 175 programPoint places, 4 predicate places. [2024-11-09 06:30:43,711 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 173 transitions, 402 flow [2024-11-09 06:30:43,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 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) [2024-11-09 06:30:43,712 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:43,713 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 06:30:43,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 06:30:43,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:43,914 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-09 06:30:43,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:43,916 INFO L85 PathProgramCache]: Analyzing trace with hash -2074015376, now seen corresponding path program 2 times [2024-11-09 06:30:43,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:43,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780496076] [2024-11-09 06:30:43,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:43,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 06:30:44,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:44,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780496076] [2024-11-09 06:30:44,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780496076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:44,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616749997] [2024-11-09 06:30:44,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:30:44,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:44,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:30:44,122 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) [2024-11-09 06:30:44,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 06:30:44,223 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:30:44,224 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:30:44,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:30:44,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:30:44,305 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 06:30:44,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:30:44,415 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 06:30:44,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616749997] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:30:44,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:30:44,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-09 06:30:44,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433133534] [2024-11-09 06:30:44,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:30:44,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 06:30:44,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:44,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 06:30:44,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:30:44,533 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 185 [2024-11-09 06:30:44,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 173 transitions, 402 flow. Second operand has 15 states, 15 states have (on average 159.13333333333333) internal successors, (2387), 15 states have internal predecessors, (2387), 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) [2024-11-09 06:30:44,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:44,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 185 [2024-11-09 06:30:44,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:44,745 INFO L124 PetriNetUnfolderBase]: 15/380 cut-off events. [2024-11-09 06:30:44,746 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-11-09 06:30:44,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 380 events. 15/380 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 883 event pairs, 6 based on Foata normal form. 3/350 useless extension candidates. Maximal degree in co-relation 310. Up to 24 conditions per place. [2024-11-09 06:30:44,749 INFO L140 encePairwiseOnDemand]: 179/185 looper letters, 17 selfloop transitions, 18 changer transitions 0/187 dead transitions. [2024-11-09 06:30:44,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 187 transitions, 546 flow [2024-11-09 06:30:44,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 06:30:44,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 06:30:44,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2864 transitions. [2024-11-09 06:30:44,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8600600600600601 [2024-11-09 06:30:44,757 INFO L175 Difference]: Start difference. First operand has 179 places, 173 transitions, 402 flow. Second operand 18 states and 2864 transitions. [2024-11-09 06:30:44,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 187 transitions, 546 flow [2024-11-09 06:30:44,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 187 transitions, 534 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-09 06:30:44,762 INFO L231 Difference]: Finished difference. Result has 199 places, 183 transitions, 502 flow [2024-11-09 06:30:44,763 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=502, PETRI_PLACES=199, PETRI_TRANSITIONS=183} [2024-11-09 06:30:44,763 INFO L277 CegarLoopForPetriNet]: 175 programPoint places, 24 predicate places. [2024-11-09 06:30:44,764 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 183 transitions, 502 flow [2024-11-09 06:30:44,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 159.13333333333333) internal successors, (2387), 15 states have internal predecessors, (2387), 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) [2024-11-09 06:30:44,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:44,768 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 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] [2024-11-09 06:30:44,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 06:30:44,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:44,970 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-09 06:30:44,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:44,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1145699372, now seen corresponding path program 3 times [2024-11-09 06:30:44,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:44,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824236299] [2024-11-09 06:30:44,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:44,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:30:45,017 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:30:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:30:45,068 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 06:30:45,069 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:30:45,069 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-11-09 06:30:45,069 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-11-09 06:30:45,069 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-11-09 06:30:45,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-11-09 06:30:45,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-11-09 06:30:45,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-11-09 06:30:45,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-11-09 06:30:45,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2024-11-09 06:30:45,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-11-09 06:30:45,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-11-09 06:30:45,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-11-09 06:30:45,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-11-09 06:30:45,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-11-09 06:30:45,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-11-09 06:30:45,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 06:30:45,072 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-09 06:30:45,072 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 06:30:45,073 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 06:30:45,115 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 06:30:45,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 250 transitions, 518 flow [2024-11-09 06:30:45,155 INFO L124 PetriNetUnfolderBase]: 24/281 cut-off events. [2024-11-09 06:30:45,156 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 06:30:45,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 281 events. 24/281 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 705 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 209. Up to 8 conditions per place. [2024-11-09 06:30:45,158 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 250 transitions, 518 flow [2024-11-09 06:30:45,161 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 250 transitions, 518 flow [2024-11-09 06:30:45,162 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:30:45,163 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;@47c21c18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:30:45,163 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-09 06:30:45,169 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 06:30:45,171 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-09 06:30:45,171 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 06:30:45,171 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:45,171 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] [2024-11-09 06:30:45,171 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-09 06:30:45,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:45,172 INFO L85 PathProgramCache]: Analyzing trace with hash 2003650714, now seen corresponding path program 1 times [2024-11-09 06:30:45,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:45,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242020904] [2024-11-09 06:30:45,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:45,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:45,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:30:45,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:45,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242020904] [2024-11-09 06:30:45,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242020904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:30:45,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:30:45,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:30:45,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733556225] [2024-11-09 06:30:45,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:30:45,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:30:45,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:45,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:30:45,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:30:45,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 250 [2024-11-09 06:30:45,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 250 transitions, 518 flow. Second operand has 6 states, 6 states have (on average 199.5) internal successors, (1197), 6 states have internal predecessors, (1197), 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) [2024-11-09 06:30:45,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:45,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 250 [2024-11-09 06:30:45,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:46,329 INFO L124 PetriNetUnfolderBase]: 870/4019 cut-off events. [2024-11-09 06:30:46,329 INFO L125 PetriNetUnfolderBase]: For 328/328 co-relation queries the response was YES. [2024-11-09 06:30:46,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5438 conditions, 4019 events. 870/4019 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 36370 event pairs, 630 based on Foata normal form. 964/4251 useless extension candidates. Maximal degree in co-relation 3234. Up to 1191 conditions per place. [2024-11-09 06:30:46,391 INFO L140 encePairwiseOnDemand]: 229/250 looper letters, 27 selfloop transitions, 5 changer transitions 0/225 dead transitions. [2024-11-09 06:30:46,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 225 transitions, 532 flow [2024-11-09 06:30:46,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:30:46,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 06:30:46,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1236 transitions. [2024-11-09 06:30:46,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.824 [2024-11-09 06:30:46,395 INFO L175 Difference]: Start difference. First operand has 236 places, 250 transitions, 518 flow. Second operand 6 states and 1236 transitions. [2024-11-09 06:30:46,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 225 transitions, 532 flow [2024-11-09 06:30:46,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 225 transitions, 530 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-09 06:30:46,400 INFO L231 Difference]: Finished difference. Result has 230 places, 225 transitions, 476 flow [2024-11-09 06:30:46,401 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=476, PETRI_PLACES=230, PETRI_TRANSITIONS=225} [2024-11-09 06:30:46,401 INFO L277 CegarLoopForPetriNet]: 236 programPoint places, -6 predicate places. [2024-11-09 06:30:46,402 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 225 transitions, 476 flow [2024-11-09 06:30:46,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 199.5) internal successors, (1197), 6 states have internal predecessors, (1197), 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) [2024-11-09 06:30:46,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:46,403 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 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] [2024-11-09 06:30:46,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 06:30:46,404 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-09 06:30:46,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:46,404 INFO L85 PathProgramCache]: Analyzing trace with hash 604598762, now seen corresponding path program 1 times [2024-11-09 06:30:46,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:46,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112233390] [2024-11-09 06:30:46,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:46,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:46,475 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:30:46,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:46,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112233390] [2024-11-09 06:30:46,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112233390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:30:46,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:30:46,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:30:46,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476662511] [2024-11-09 06:30:46,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:30:46,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:30:46,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:46,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:30:46,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:30:46,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 250 [2024-11-09 06:30:46,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 225 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 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) [2024-11-09 06:30:46,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:46,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 250 [2024-11-09 06:30:46,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:46,638 INFO L124 PetriNetUnfolderBase]: 69/953 cut-off events. [2024-11-09 06:30:46,638 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-11-09 06:30:46,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 953 events. 69/953 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5366 event pairs, 42 based on Foata normal form. 1/845 useless extension candidates. Maximal degree in co-relation 1030. Up to 87 conditions per place. [2024-11-09 06:30:46,654 INFO L140 encePairwiseOnDemand]: 247/250 looper letters, 13 selfloop transitions, 2 changer transitions 0/226 dead transitions. [2024-11-09 06:30:46,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 226 transitions, 510 flow [2024-11-09 06:30:46,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:30:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 06:30:46,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 667 transitions. [2024-11-09 06:30:46,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8893333333333333 [2024-11-09 06:30:46,658 INFO L175 Difference]: Start difference. First operand has 230 places, 225 transitions, 476 flow. Second operand 3 states and 667 transitions. [2024-11-09 06:30:46,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 226 transitions, 510 flow [2024-11-09 06:30:46,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 226 transitions, 498 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 06:30:46,664 INFO L231 Difference]: Finished difference. Result has 228 places, 226 transitions, 478 flow [2024-11-09 06:30:46,666 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=478, PETRI_PLACES=228, PETRI_TRANSITIONS=226} [2024-11-09 06:30:46,666 INFO L277 CegarLoopForPetriNet]: 236 programPoint places, -8 predicate places. [2024-11-09 06:30:46,667 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 226 transitions, 478 flow [2024-11-09 06:30:46,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 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) [2024-11-09 06:30:46,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:46,668 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 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] [2024-11-09 06:30:46,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 06:30:46,668 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-09 06:30:46,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:46,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2072734752, now seen corresponding path program 1 times [2024-11-09 06:30:46,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:46,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106934714] [2024-11-09 06:30:46,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:46,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:46,742 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:30:46,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:46,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106934714] [2024-11-09 06:30:46,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106934714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:46,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916951071] [2024-11-09 06:30:46,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:46,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:46,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:30:46,746 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) [2024-11-09 06:30:46,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 06:30:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:46,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:30:46,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:30:46,874 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:30:46,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:30:46,912 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:30:46,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916951071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:30:46,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:30:46,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-09 06:30:46,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138254945] [2024-11-09 06:30:46,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:30:46,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:30:46,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:46,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:30:46,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:30:46,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 250 [2024-11-09 06:30:47,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 226 transitions, 478 flow. Second operand has 10 states, 10 states have (on average 216.1) internal successors, (2161), 10 states have internal predecessors, (2161), 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) [2024-11-09 06:30:47,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:47,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 250 [2024-11-09 06:30:47,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:47,272 INFO L124 PetriNetUnfolderBase]: 69/968 cut-off events. [2024-11-09 06:30:47,273 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-09 06:30:47,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1117 conditions, 968 events. 69/968 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5346 event pairs, 42 based on Foata normal form. 2/861 useless extension candidates. Maximal degree in co-relation 1065. Up to 87 conditions per place. [2024-11-09 06:30:47,283 INFO L140 encePairwiseOnDemand]: 244/250 looper letters, 17 selfloop transitions, 9 changer transitions 0/234 dead transitions. [2024-11-09 06:30:47,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 234 transitions, 548 flow [2024-11-09 06:30:47,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:30:47,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 06:30:47,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1954 transitions. [2024-11-09 06:30:47,288 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8684444444444445 [2024-11-09 06:30:47,288 INFO L175 Difference]: Start difference. First operand has 228 places, 226 transitions, 478 flow. Second operand 9 states and 1954 transitions. [2024-11-09 06:30:47,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 234 transitions, 548 flow [2024-11-09 06:30:47,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 234 transitions, 546 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 06:30:47,295 INFO L231 Difference]: Finished difference. Result has 238 places, 232 transitions, 526 flow [2024-11-09 06:30:47,296 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=526, PETRI_PLACES=238, PETRI_TRANSITIONS=232} [2024-11-09 06:30:47,296 INFO L277 CegarLoopForPetriNet]: 236 programPoint places, 2 predicate places. [2024-11-09 06:30:47,296 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 232 transitions, 526 flow [2024-11-09 06:30:47,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 216.1) internal successors, (2161), 10 states have internal predecessors, (2161), 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) [2024-11-09 06:30:47,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:47,298 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 06:30:47,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 06:30:47,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 06:30:47,500 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-09 06:30:47,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:47,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1559282592, now seen corresponding path program 2 times [2024-11-09 06:30:47,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:47,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105399102] [2024-11-09 06:30:47,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:47,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:30:47,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:47,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105399102] [2024-11-09 06:30:47,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105399102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:47,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088254562] [2024-11-09 06:30:47,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:30:47,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:47,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:30:47,709 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) [2024-11-09 06:30:47,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 06:30:47,829 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:30:47,829 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:30:47,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:30:47,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:30:47,908 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:30:47,908 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:30:48,014 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:30:48,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088254562] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:30:48,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:30:48,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-09 06:30:48,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912134491] [2024-11-09 06:30:48,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:30:48,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 06:30:48,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:48,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 06:30:48,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:30:48,128 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 250 [2024-11-09 06:30:48,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 232 transitions, 526 flow. Second operand has 15 states, 15 states have (on average 216.2) internal successors, (3243), 15 states have internal predecessors, (3243), 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) [2024-11-09 06:30:48,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:48,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 250 [2024-11-09 06:30:48,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:48,488 INFO L124 PetriNetUnfolderBase]: 69/1007 cut-off events. [2024-11-09 06:30:48,488 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-11-09 06:30:48,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1210 conditions, 1007 events. 69/1007 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5348 event pairs, 42 based on Foata normal form. 3/901 useless extension candidates. Maximal degree in co-relation 1027. Up to 87 conditions per place. [2024-11-09 06:30:48,500 INFO L140 encePairwiseOnDemand]: 244/250 looper letters, 20 selfloop transitions, 18 changer transitions 0/246 dead transitions. [2024-11-09 06:30:48,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 246 transitions, 676 flow [2024-11-09 06:30:48,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 06:30:48,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 06:30:48,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3893 transitions. [2024-11-09 06:30:48,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8651111111111112 [2024-11-09 06:30:48,513 INFO L175 Difference]: Start difference. First operand has 238 places, 232 transitions, 526 flow. Second operand 18 states and 3893 transitions. [2024-11-09 06:30:48,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 246 transitions, 676 flow [2024-11-09 06:30:48,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 246 transitions, 664 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-09 06:30:48,519 INFO L231 Difference]: Finished difference. Result has 258 places, 242 transitions, 626 flow [2024-11-09 06:30:48,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=626, PETRI_PLACES=258, PETRI_TRANSITIONS=242} [2024-11-09 06:30:48,521 INFO L277 CegarLoopForPetriNet]: 236 programPoint places, 22 predicate places. [2024-11-09 06:30:48,521 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 242 transitions, 626 flow [2024-11-09 06:30:48,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 216.2) internal successors, (3243), 15 states have internal predecessors, (3243), 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) [2024-11-09 06:30:48,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:48,523 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 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] [2024-11-09 06:30:48,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 06:30:48,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:48,724 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-09 06:30:48,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:48,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1069074134, now seen corresponding path program 3 times [2024-11-09 06:30:48,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:48,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011385516] [2024-11-09 06:30:48,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:48,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:30:48,773 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:30:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:30:48,842 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 06:30:48,843 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:30:48,843 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-09 06:30:48,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-11-09 06:30:48,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-11-09 06:30:48,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-11-09 06:30:48,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-11-09 06:30:48,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-11-09 06:30:48,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-11-09 06:30:48,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-11-09 06:30:48,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-11-09 06:30:48,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-11-09 06:30:48,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-11-09 06:30:48,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-11-09 06:30:48,847 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-11-09 06:30:48,847 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-11-09 06:30:48,847 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-11-09 06:30:48,847 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-11-09 06:30:48,847 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-11-09 06:30:48,848 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-11-09 06:30:48,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 06:30:48,848 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-09 06:30:48,849 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 06:30:48,849 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-09 06:30:48,908 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 06:30:48,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 315 transitions, 658 flow [2024-11-09 06:30:48,978 INFO L124 PetriNetUnfolderBase]: 31/357 cut-off events. [2024-11-09 06:30:48,978 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-09 06:30:48,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 357 events. 31/357 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1081 event pairs, 0 based on Foata normal form. 0/304 useless extension candidates. Maximal degree in co-relation 289. Up to 10 conditions per place. [2024-11-09 06:30:48,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 297 places, 315 transitions, 658 flow [2024-11-09 06:30:48,989 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 297 places, 315 transitions, 658 flow [2024-11-09 06:30:48,990 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:30:48,991 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;@47c21c18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:30:48,991 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-09 06:30:48,994 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 06:30:48,995 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-09 06:30:48,995 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 06:30:48,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:48,995 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] [2024-11-09 06:30:48,995 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-09 06:30:48,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:48,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1140516747, now seen corresponding path program 1 times [2024-11-09 06:30:48,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:48,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874615337] [2024-11-09 06:30:48,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:48,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:30:49,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:49,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874615337] [2024-11-09 06:30:49,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874615337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:30:49,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:30:49,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:30:49,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823869844] [2024-11-09 06:30:49,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:30:49,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:30:49,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:49,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:30:49,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:30:49,439 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 315 [2024-11-09 06:30:49,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 315 transitions, 658 flow. Second operand has 6 states, 6 states have (on average 252.5) internal successors, (1515), 6 states have internal predecessors, (1515), 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) [2024-11-09 06:30:49,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:49,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 315 [2024-11-09 06:30:49,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:55,467 INFO L124 PetriNetUnfolderBase]: 8893/30372 cut-off events. [2024-11-09 06:30:55,467 INFO L125 PetriNetUnfolderBase]: For 3794/3794 co-relation queries the response was YES. [2024-11-09 06:30:55,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43446 conditions, 30372 events. 8893/30372 cut-off events. For 3794/3794 co-relation queries the response was YES. Maximal size of possible extension queue 992. Compared 379573 event pairs, 6804 based on Foata normal form. 8471/33351 useless extension candidates. Maximal degree in co-relation 22386. Up to 11130 conditions per place. [2024-11-09 06:30:55,930 INFO L140 encePairwiseOnDemand]: 290/315 looper letters, 34 selfloop transitions, 5 changer transitions 0/284 dead transitions. [2024-11-09 06:30:55,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 284 transitions, 674 flow [2024-11-09 06:30:55,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:30:55,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 06:30:55,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1565 transitions. [2024-11-09 06:30:55,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.828042328042328 [2024-11-09 06:30:55,933 INFO L175 Difference]: Start difference. First operand has 297 places, 315 transitions, 658 flow. Second operand 6 states and 1565 transitions. [2024-11-09 06:30:55,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 284 transitions, 674 flow [2024-11-09 06:30:55,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 284 transitions, 668 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-09 06:30:55,940 INFO L231 Difference]: Finished difference. Result has 289 places, 284 transitions, 600 flow [2024-11-09 06:30:55,941 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=600, PETRI_PLACES=289, PETRI_TRANSITIONS=284} [2024-11-09 06:30:55,942 INFO L277 CegarLoopForPetriNet]: 297 programPoint places, -8 predicate places. [2024-11-09 06:30:55,942 INFO L471 AbstractCegarLoop]: Abstraction has has 289 places, 284 transitions, 600 flow [2024-11-09 06:30:55,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.5) internal successors, (1515), 6 states have internal predecessors, (1515), 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) [2024-11-09 06:30:55,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:55,943 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:30:55,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 06:30:55,943 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-09 06:30:55,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:55,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1156225586, now seen corresponding path program 1 times [2024-11-09 06:30:55,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:55,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838432640] [2024-11-09 06:30:55,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:55,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:56,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:30:56,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:56,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838432640] [2024-11-09 06:30:56,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838432640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:30:56,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:30:56,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:30:56,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008918639] [2024-11-09 06:30:56,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:30:56,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:30:56,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:56,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:30:56,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:30:56,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 315 [2024-11-09 06:30:56,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 284 transitions, 600 flow. Second operand has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 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) [2024-11-09 06:30:56,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:56,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 315 [2024-11-09 06:30:56,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:56,646 INFO L124 PetriNetUnfolderBase]: 285/2888 cut-off events. [2024-11-09 06:30:56,646 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2024-11-09 06:30:56,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3354 conditions, 2888 events. 285/2888 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 24337 event pairs, 204 based on Foata normal form. 1/2551 useless extension candidates. Maximal degree in co-relation 3289. Up to 330 conditions per place. [2024-11-09 06:30:56,693 INFO L140 encePairwiseOnDemand]: 312/315 looper letters, 16 selfloop transitions, 2 changer transitions 0/285 dead transitions. [2024-11-09 06:30:56,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 285 transitions, 640 flow [2024-11-09 06:30:56,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:30:56,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 06:30:56,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 841 transitions. [2024-11-09 06:30:56,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8899470899470899 [2024-11-09 06:30:56,696 INFO L175 Difference]: Start difference. First operand has 289 places, 284 transitions, 600 flow. Second operand 3 states and 841 transitions. [2024-11-09 06:30:56,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 285 transitions, 640 flow [2024-11-09 06:30:56,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 285 transitions, 628 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 06:30:56,703 INFO L231 Difference]: Finished difference. Result has 287 places, 285 transitions, 602 flow [2024-11-09 06:30:56,704 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=602, PETRI_PLACES=287, PETRI_TRANSITIONS=285} [2024-11-09 06:30:56,704 INFO L277 CegarLoopForPetriNet]: 297 programPoint places, -10 predicate places. [2024-11-09 06:30:56,705 INFO L471 AbstractCegarLoop]: Abstraction has has 287 places, 285 transitions, 602 flow [2024-11-09 06:30:56,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 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) [2024-11-09 06:30:56,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:56,706 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] [2024-11-09 06:30:56,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 06:30:56,706 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-09 06:30:56,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:56,706 INFO L85 PathProgramCache]: Analyzing trace with hash 756568993, now seen corresponding path program 1 times [2024-11-09 06:30:56,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:56,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23761801] [2024-11-09 06:30:56,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:56,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:56,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:30:56,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:56,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23761801] [2024-11-09 06:30:56,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23761801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:56,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130119657] [2024-11-09 06:30:56,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:56,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:56,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:30:56,790 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) [2024-11-09 06:30:56,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 06:30:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:56,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:30:56,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:30:56,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:30:56,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:30:56,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:30:56,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130119657] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:30:56,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:30:56,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-09 06:30:56,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646007128] [2024-11-09 06:30:56,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:30:56,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:30:56,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:56,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:30:56,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:30:57,063 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 315 [2024-11-09 06:30:57,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 285 transitions, 602 flow. Second operand has 10 states, 10 states have (on average 272.9) internal successors, (2729), 10 states have internal predecessors, (2729), 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) [2024-11-09 06:30:57,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:57,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 315 [2024-11-09 06:30:57,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:57,787 INFO L124 PetriNetUnfolderBase]: 285/2903 cut-off events. [2024-11-09 06:30:57,787 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2024-11-09 06:30:57,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3377 conditions, 2903 events. 285/2903 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 24381 event pairs, 204 based on Foata normal form. 2/2567 useless extension candidates. Maximal degree in co-relation 3324. Up to 330 conditions per place. [2024-11-09 06:30:57,834 INFO L140 encePairwiseOnDemand]: 309/315 looper letters, 20 selfloop transitions, 9 changer transitions 0/293 dead transitions. [2024-11-09 06:30:57,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 293 transitions, 678 flow [2024-11-09 06:30:57,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:30:57,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 06:30:57,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2470 transitions. [2024-11-09 06:30:57,841 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8712522045855379 [2024-11-09 06:30:57,841 INFO L175 Difference]: Start difference. First operand has 287 places, 285 transitions, 602 flow. Second operand 9 states and 2470 transitions. [2024-11-09 06:30:57,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 293 transitions, 678 flow [2024-11-09 06:30:57,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 293 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 06:30:57,848 INFO L231 Difference]: Finished difference. Result has 297 places, 291 transitions, 650 flow [2024-11-09 06:30:57,849 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=650, PETRI_PLACES=297, PETRI_TRANSITIONS=291} [2024-11-09 06:30:57,849 INFO L277 CegarLoopForPetriNet]: 297 programPoint places, 0 predicate places. [2024-11-09 06:30:57,850 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 291 transitions, 650 flow [2024-11-09 06:30:57,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 272.9) internal successors, (2729), 10 states have internal predecessors, (2729), 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) [2024-11-09 06:30:57,852 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:57,853 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 06:30:57,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 06:30:58,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:58,057 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-09 06:30:58,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:58,057 INFO L85 PathProgramCache]: Analyzing trace with hash 890790721, now seen corresponding path program 2 times [2024-11-09 06:30:58,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:58,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570897769] [2024-11-09 06:30:58,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:58,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:58,245 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:30:58,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:58,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570897769] [2024-11-09 06:30:58,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570897769] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:58,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314673450] [2024-11-09 06:30:58,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:30:58,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:58,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:30:58,249 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:30:58,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 06:30:58,384 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 06:30:58,384 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:30:58,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 06:30:58,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:30:58,428 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 [2024-11-09 06:30:58,454 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 [2024-11-09 06:30:58,489 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:30:58,490 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 [2024-11-09 06:30:58,536 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:30:58,537 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 [2024-11-09 06:30:58,566 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 06:30:58,567 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:30:58,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314673450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:30:58,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:30:58,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-11-09 06:30:58,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569426991] [2024-11-09 06:30:58,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:30:58,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:30:58,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:58,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:30:58,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-09 06:30:58,859 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 315 [2024-11-09 06:30:58,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 291 transitions, 650 flow. Second operand has 6 states, 6 states have (on average 266.3333333333333) internal successors, (1598), 6 states have internal predecessors, (1598), 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) [2024-11-09 06:30:58,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:58,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 315 [2024-11-09 06:30:58,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:00,419 INFO L124 PetriNetUnfolderBase]: 1212/7444 cut-off events. [2024-11-09 06:31:00,419 INFO L125 PetriNetUnfolderBase]: For 837/837 co-relation queries the response was YES. [2024-11-09 06:31:00,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9535 conditions, 7444 events. 1212/7444 cut-off events. For 837/837 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 79430 event pairs, 447 based on Foata normal form. 0/6514 useless extension candidates. Maximal degree in co-relation 9425. Up to 701 conditions per place. [2024-11-09 06:31:00,541 INFO L140 encePairwiseOnDemand]: 309/315 looper letters, 58 selfloop transitions, 5 changer transitions 0/326 dead transitions. [2024-11-09 06:31:00,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 326 transitions, 906 flow [2024-11-09 06:31:00,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:31:00,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 06:31:00,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1648 transitions. [2024-11-09 06:31:00,545 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8719576719576719 [2024-11-09 06:31:00,545 INFO L175 Difference]: Start difference. First operand has 297 places, 291 transitions, 650 flow. Second operand 6 states and 1648 transitions. [2024-11-09 06:31:00,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 326 transitions, 906 flow [2024-11-09 06:31:00,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 326 transitions, 900 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 06:31:00,554 INFO L231 Difference]: Finished difference. Result has 300 places, 290 transitions, 652 flow [2024-11-09 06:31:00,554 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=652, PETRI_PLACES=300, PETRI_TRANSITIONS=290} [2024-11-09 06:31:00,555 INFO L277 CegarLoopForPetriNet]: 297 programPoint places, 3 predicate places. [2024-11-09 06:31:00,555 INFO L471 AbstractCegarLoop]: Abstraction has has 300 places, 290 transitions, 652 flow [2024-11-09 06:31:00,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 266.3333333333333) internal successors, (1598), 6 states have internal predecessors, (1598), 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) [2024-11-09 06:31:00,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:00,556 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 06:31:00,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 06:31:00,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:00,759 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-09 06:31:00,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:00,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1315080527, now seen corresponding path program 1 times [2024-11-09 06:31:00,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:00,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414741401] [2024-11-09 06:31:00,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:00,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:00,916 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-09 06:31:00,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:00,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414741401] [2024-11-09 06:31:00,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414741401] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:31:00,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422937732] [2024-11-09 06:31:00,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:00,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:00,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:31:00,920 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:31:00,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 06:31:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:01,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:31:01,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:31:01,141 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-09 06:31:01,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:31:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-09 06:31:01,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422937732] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:31:01,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:31:01,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-09 06:31:01,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811765130] [2024-11-09 06:31:01,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:31:01,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 06:31:01,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:01,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 06:31:01,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:31:01,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 315 [2024-11-09 06:31:01,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 290 transitions, 652 flow. Second operand has 15 states, 15 states have (on average 273.26666666666665) internal successors, (4099), 15 states have internal predecessors, (4099), 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) [2024-11-09 06:31:01,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:01,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 315 [2024-11-09 06:31:01,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:02,137 INFO L124 PetriNetUnfolderBase]: 285/2941 cut-off events. [2024-11-09 06:31:02,137 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2024-11-09 06:31:02,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3469 conditions, 2941 events. 285/2941 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 24377 event pairs, 204 based on Foata normal form. 3/2607 useless extension candidates. Maximal degree in co-relation 3290. Up to 330 conditions per place. [2024-11-09 06:31:02,171 INFO L140 encePairwiseOnDemand]: 309/315 looper letters, 23 selfloop transitions, 18 changer transitions 0/304 dead transitions. [2024-11-09 06:31:02,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 304 transitions, 802 flow [2024-11-09 06:31:02,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 06:31:02,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 06:31:02,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4922 transitions. [2024-11-09 06:31:02,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8680776014109347 [2024-11-09 06:31:02,179 INFO L175 Difference]: Start difference. First operand has 300 places, 290 transitions, 652 flow. Second operand 18 states and 4922 transitions. [2024-11-09 06:31:02,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 304 transitions, 802 flow [2024-11-09 06:31:02,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 304 transitions, 792 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 06:31:02,186 INFO L231 Difference]: Finished difference. Result has 316 places, 300 transitions, 748 flow [2024-11-09 06:31:02,187 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=748, PETRI_PLACES=316, PETRI_TRANSITIONS=300} [2024-11-09 06:31:02,188 INFO L277 CegarLoopForPetriNet]: 297 programPoint places, 19 predicate places. [2024-11-09 06:31:02,188 INFO L471 AbstractCegarLoop]: Abstraction has has 316 places, 300 transitions, 748 flow [2024-11-09 06:31:02,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 273.26666666666665) internal successors, (4099), 15 states have internal predecessors, (4099), 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) [2024-11-09 06:31:02,190 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:02,190 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:31:02,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 06:31:02,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:02,391 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-09 06:31:02,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:02,392 INFO L85 PathProgramCache]: Analyzing trace with hash -290763552, now seen corresponding path program 2 times [2024-11-09 06:31:02,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:02,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71205765] [2024-11-09 06:31:02,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:02,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:31:02,441 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:31:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:31:02,489 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 06:31:02,490 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:31:02,490 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-11-09 06:31:02,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-11-09 06:31:02,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-11-09 06:31:02,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-11-09 06:31:02,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-11-09 06:31:02,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-11-09 06:31:02,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-11-09 06:31:02,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-11-09 06:31:02,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-11-09 06:31:02,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-11-09 06:31:02,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-11-09 06:31:02,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-11-09 06:31:02,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-11-09 06:31:02,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-11-09 06:31:02,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-11-09 06:31:02,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-11-09 06:31:02,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-11-09 06:31:02,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-11-09 06:31:02,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-11-09 06:31:02,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-11-09 06:31:02,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-11-09 06:31:02,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-11-09 06:31:02,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 06:31:02,493 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-11-09 06:31:02,494 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 06:31:02,494 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-09 06:31:02,544 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 06:31:02,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 358 places, 380 transitions, 800 flow [2024-11-09 06:31:02,597 INFO L124 PetriNetUnfolderBase]: 38/433 cut-off events. [2024-11-09 06:31:02,598 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-09 06:31:02,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 433 events. 38/433 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1465 event pairs, 0 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 370. Up to 12 conditions per place. [2024-11-09 06:31:02,605 INFO L82 GeneralOperation]: Start removeDead. Operand has 358 places, 380 transitions, 800 flow [2024-11-09 06:31:02,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 358 places, 380 transitions, 800 flow [2024-11-09 06:31:02,611 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:31:02,611 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;@47c21c18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:31:02,611 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-09 06:31:02,614 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 06:31:02,615 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-09 06:31:02,615 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 06:31:02,615 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:02,615 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:31:02,615 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-11-09 06:31:02,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:02,616 INFO L85 PathProgramCache]: Analyzing trace with hash 656794225, now seen corresponding path program 1 times [2024-11-09 06:31:02,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:02,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120497560] [2024-11-09 06:31:02,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:02,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:02,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:31:02,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:02,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120497560] [2024-11-09 06:31:02,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120497560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:31:02,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:31:02,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:31:02,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588371524] [2024-11-09 06:31:02,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:31:02,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:31:02,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:02,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:31:02,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:31:03,021 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 380 [2024-11-09 06:31:03,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 380 transitions, 800 flow. Second operand has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 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) [2024-11-09 06:31:03,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:03,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 380 [2024-11-09 06:31:03,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand