./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 17:06:30,130 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 17:06:30,178 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-11 17:06:30,182 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 17:06:30,182 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 17:06:30,206 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 17:06:30,207 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 17:06:30,207 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 17:06:30,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 17:06:30,208 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 17:06:30,208 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 17:06:30,208 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 17:06:30,208 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 17:06:30,209 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 17:06:30,209 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 17:06:30,209 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 17:06:30,209 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 17:06:30,210 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 17:06:30,210 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 17:06:30,210 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 17:06:30,210 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 17:06:30,214 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 17:06:30,214 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-11 17:06:30,214 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 17:06:30,214 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 17:06:30,215 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 17:06:30,215 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 17:06:30,216 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 17:06:30,216 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 17:06:30,217 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 17:06:30,217 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 17:06:30,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:06:30,217 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 17:06:30,217 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 17:06:30,217 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 17:06:30,217 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 17:06:30,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 17:06:30,218 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 17:06:30,218 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 17:06:30,218 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 17:06:30,218 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 17:06:30,219 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 [2024-10-11 17:06:30,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 17:06:30,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 17:06:30,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 17:06:30,471 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 17:06:30,472 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 17:06:30,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2024-10-11 17:06:31,635 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 17:06:31,832 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 17:06:31,832 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2024-10-11 17:06:31,846 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c4f285ff9/0a87ae28b24443d1bf47b82b4ec0433c/FLAGfc44c0ce6 [2024-10-11 17:06:32,203 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c4f285ff9/0a87ae28b24443d1bf47b82b4ec0433c [2024-10-11 17:06:32,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 17:06:32,206 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 17:06:32,207 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 17:06:32,207 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 17:06:32,216 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 17:06:32,216 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:06:32" (1/1) ... [2024-10-11 17:06:32,217 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5723e60b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:32, skipping insertion in model container [2024-10-11 17:06:32,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:06:32" (1/1) ... [2024-10-11 17:06:32,273 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 17:06:32,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:06:32,623 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 17:06:32,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:06:32,696 INFO L204 MainTranslator]: Completed translation [2024-10-11 17:06:32,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:32 WrapperNode [2024-10-11 17:06:32,696 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 17:06:32,697 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 17:06:32,697 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 17:06:32,697 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 17:06:32,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:32" (1/1) ... [2024-10-11 17:06:32,721 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:32" (1/1) ... [2024-10-11 17:06:32,741 INFO L138 Inliner]: procedures = 264, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 92 [2024-10-11 17:06:32,742 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 17:06:32,742 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 17:06:32,742 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 17:06:32,743 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 17:06:32,749 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:32" (1/1) ... [2024-10-11 17:06:32,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:32" (1/1) ... [2024-10-11 17:06:32,755 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:32" (1/1) ... [2024-10-11 17:06:32,756 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:32" (1/1) ... [2024-10-11 17:06:32,765 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:32" (1/1) ... [2024-10-11 17:06:32,769 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:32" (1/1) ... [2024-10-11 17:06:32,772 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:32" (1/1) ... [2024-10-11 17:06:32,773 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:32" (1/1) ... [2024-10-11 17:06:32,779 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 17:06:32,780 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 17:06:32,783 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 17:06:32,783 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 17:06:32,784 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:32" (1/1) ... [2024-10-11 17:06:32,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:06:32,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:06:32,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 17:06:32,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 17:06:32,846 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 17:06:32,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-11 17:06:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-11 17:06:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 17:06:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 17:06:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-11 17:06:32,847 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-11 17:06:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 17:06:32,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 17:06:32,848 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 17:06:32,979 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 17:06:32,981 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 17:06:33,131 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 17:06:33,131 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 17:06:33,155 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 17:06:33,156 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 17:06:33,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:06:33 BoogieIcfgContainer [2024-10-11 17:06:33,157 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 17:06:33,158 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 17:06:33,158 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 17:06:33,161 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 17:06:33,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 05:06:32" (1/3) ... [2024-10-11 17:06:33,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbc1c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:06:33, skipping insertion in model container [2024-10-11 17:06:33,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:32" (2/3) ... [2024-10-11 17:06:33,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbc1c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:06:33, skipping insertion in model container [2024-10-11 17:06:33,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:06:33" (3/3) ... [2024-10-11 17:06:33,163 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2024-10-11 17:06:33,174 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 17:06:33,174 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-11 17:06:33,174 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 17:06:33,219 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 17:06:33,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 208 flow [2024-10-11 17:06:33,281 INFO L124 PetriNetUnfolderBase]: 4/101 cut-off events. [2024-10-11 17:06:33,281 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 17:06:33,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 101 events. 4/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 81 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2024-10-11 17:06:33,285 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 102 transitions, 208 flow [2024-10-11 17:06:33,288 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 101 transitions, 205 flow [2024-10-11 17:06:33,294 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 17:06:33,299 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;@7da9ca92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 17:06:33,299 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-11 17:06:33,314 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 17:06:33,314 INFO L124 PetriNetUnfolderBase]: 4/54 cut-off events. [2024-10-11 17:06:33,314 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 17:06:33,315 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:33,315 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] [2024-10-11 17:06:33,316 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 17:06:33,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:33,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1729651413, now seen corresponding path program 1 times [2024-10-11 17:06:33,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:33,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799286398] [2024-10-11 17:06:33,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:33,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:33,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:06:33,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:33,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799286398] [2024-10-11 17:06:33,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799286398] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:06:33,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:06:33,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:06:33,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736491481] [2024-10-11 17:06:33,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:06:33,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:06:33,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:33,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:06:33,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:06:33,635 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 102 [2024-10-11 17:06:33,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 101 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:33,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:33,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 102 [2024-10-11 17:06:33,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:33,690 INFO L124 PetriNetUnfolderBase]: 7/162 cut-off events. [2024-10-11 17:06:33,690 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 17:06:33,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 162 events. 7/162 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 322 event pairs, 6 based on Foata normal form. 5/155 useless extension candidates. Maximal degree in co-relation 144. Up to 24 conditions per place. [2024-10-11 17:06:33,694 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 10 selfloop transitions, 2 changer transitions 1/99 dead transitions. [2024-10-11 17:06:33,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 99 transitions, 225 flow [2024-10-11 17:06:33,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:06:33,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:06:33,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2024-10-11 17:06:33,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9183006535947712 [2024-10-11 17:06:33,707 INFO L175 Difference]: Start difference. First operand has 101 places, 101 transitions, 205 flow. Second operand 3 states and 281 transitions. [2024-10-11 17:06:33,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 99 transitions, 225 flow [2024-10-11 17:06:33,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 99 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 17:06:33,714 INFO L231 Difference]: Finished difference. Result has 103 places, 98 transitions, 208 flow [2024-10-11 17:06:33,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=103, PETRI_TRANSITIONS=98} [2024-10-11 17:06:33,721 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 2 predicate places. [2024-10-11 17:06:33,723 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 98 transitions, 208 flow [2024-10-11 17:06:33,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:33,723 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:33,724 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] [2024-10-11 17:06:33,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 17:06:33,724 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 17:06:33,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:33,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1133289900, now seen corresponding path program 1 times [2024-10-11 17:06:33,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:33,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037918180] [2024-10-11 17:06:33,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:33,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:33,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:06:33,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:33,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037918180] [2024-10-11 17:06:33,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037918180] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:06:33,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435555823] [2024-10-11 17:06:33,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:33,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:06:33,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:06:33,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:06:33,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 17:06:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:33,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 17:06:33,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:06:33,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:06:34,003 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:06:34,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:06:34,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435555823] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:06:34,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:06:34,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 17:06:34,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159149598] [2024-10-11 17:06:34,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:06:34,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:06:34,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:34,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:06:34,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:06:34,077 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 102 [2024-10-11 17:06:34,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 98 transitions, 208 flow. Second operand has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:34,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:34,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 102 [2024-10-11 17:06:34,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:34,212 INFO L124 PetriNetUnfolderBase]: 7/168 cut-off events. [2024-10-11 17:06:34,212 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 17:06:34,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 168 events. 7/168 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 316 event pairs, 6 based on Foata normal form. 2/159 useless extension candidates. Maximal degree in co-relation 191. Up to 24 conditions per place. [2024-10-11 17:06:34,214 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 14 selfloop transitions, 9 changer transitions 0/106 dead transitions. [2024-10-11 17:06:34,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 106 transitions, 272 flow [2024-10-11 17:06:34,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 17:06:34,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 17:06:34,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 790 transitions. [2024-10-11 17:06:34,219 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8605664488017429 [2024-10-11 17:06:34,219 INFO L175 Difference]: Start difference. First operand has 103 places, 98 transitions, 208 flow. Second operand 9 states and 790 transitions. [2024-10-11 17:06:34,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 106 transitions, 272 flow [2024-10-11 17:06:34,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 106 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 17:06:34,222 INFO L231 Difference]: Finished difference. Result has 112 places, 104 transitions, 256 flow [2024-10-11 17:06:34,222 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=256, PETRI_PLACES=112, PETRI_TRANSITIONS=104} [2024-10-11 17:06:34,223 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 11 predicate places. [2024-10-11 17:06:34,223 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 104 transitions, 256 flow [2024-10-11 17:06:34,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:34,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:34,224 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:06:34,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 17:06:34,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:06:34,428 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 17:06:34,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:34,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1782452404, now seen corresponding path program 2 times [2024-10-11 17:06:34,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:34,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275860633] [2024-10-11 17:06:34,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:34,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:34,602 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:06:34,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:34,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275860633] [2024-10-11 17:06:34,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275860633] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:06:34,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895954055] [2024-10-11 17:06:34,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:06:34,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:06:34,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:06:34,607 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:06:34,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 17:06:34,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 17:06:34,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:06:34,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 17:06:34,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:06:34,693 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 [2024-10-11 17:06:34,709 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 [2024-10-11 17:06:34,739 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:06:34,739 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 [2024-10-11 17:06:34,771 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:06:34,772 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 [2024-10-11 17:06:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 17:06:34,797 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:06:34,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895954055] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:06:34,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:06:34,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-10-11 17:06:34,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600985832] [2024-10-11 17:06:34,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:06:34,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 17:06:34,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:34,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 17:06:34,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-11 17:06:34,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 102 [2024-10-11 17:06:34,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 104 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:34,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:34,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 102 [2024-10-11 17:06:34,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:35,083 INFO L124 PetriNetUnfolderBase]: 129/617 cut-off events. [2024-10-11 17:06:35,083 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-11 17:06:35,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 617 events. 129/617 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3568 event pairs, 47 based on Foata normal form. 0/557 useless extension candidates. Maximal degree in co-relation 893. Up to 178 conditions per place. [2024-10-11 17:06:35,086 INFO L140 encePairwiseOnDemand]: 91/102 looper letters, 43 selfloop transitions, 22 changer transitions 0/145 dead transitions. [2024-10-11 17:06:35,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 145 transitions, 468 flow [2024-10-11 17:06:35,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 17:06:35,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 17:06:35,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 516 transitions. [2024-10-11 17:06:35,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8431372549019608 [2024-10-11 17:06:35,091 INFO L175 Difference]: Start difference. First operand has 112 places, 104 transitions, 256 flow. Second operand 6 states and 516 transitions. [2024-10-11 17:06:35,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 145 transitions, 468 flow [2024-10-11 17:06:35,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 145 transitions, 462 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-11 17:06:35,095 INFO L231 Difference]: Finished difference. Result has 120 places, 126 transitions, 396 flow [2024-10-11 17:06:35,097 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=396, PETRI_PLACES=120, PETRI_TRANSITIONS=126} [2024-10-11 17:06:35,098 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 19 predicate places. [2024-10-11 17:06:35,098 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 126 transitions, 396 flow [2024-10-11 17:06:35,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:35,098 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:35,098 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:06:35,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 17:06:35,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:06:35,303 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 17:06:35,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:35,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1803998658, now seen corresponding path program 1 times [2024-10-11 17:06:35,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:35,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271993413] [2024-10-11 17:06:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:35,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:35,434 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:06:35,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:35,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271993413] [2024-10-11 17:06:35,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271993413] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:06:35,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344275604] [2024-10-11 17:06:35,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:35,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:06:35,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:06:35,438 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:06:35,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 17:06:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:35,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 17:06:35,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:06:35,552 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:06:35,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:06:35,628 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:06:35,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344275604] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:06:35,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:06:35,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-10-11 17:06:35,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319392921] [2024-10-11 17:06:35,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:06:35,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 17:06:35,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:35,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 17:06:35,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-11 17:06:35,659 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 102 [2024-10-11 17:06:35,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 126 transitions, 396 flow. Second operand has 18 states, 18 states have (on average 87.0) internal successors, (1566), 18 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:35,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:35,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 102 [2024-10-11 17:06:35,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:35,849 INFO L124 PetriNetUnfolderBase]: 41/444 cut-off events. [2024-10-11 17:06:35,849 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-10-11 17:06:35,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 444 events. 41/444 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2266 event pairs, 16 based on Foata normal form. 4/421 useless extension candidates. Maximal degree in co-relation 626. Up to 55 conditions per place. [2024-10-11 17:06:35,854 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 18 selfloop transitions, 21 changer transitions 0/144 dead transitions. [2024-10-11 17:06:35,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 144 transitions, 562 flow [2024-10-11 17:06:35,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 17:06:35,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 17:06:35,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1828 transitions. [2024-10-11 17:06:35,858 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8534080298786181 [2024-10-11 17:06:35,858 INFO L175 Difference]: Start difference. First operand has 120 places, 126 transitions, 396 flow. Second operand 21 states and 1828 transitions. [2024-10-11 17:06:35,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 144 transitions, 562 flow [2024-10-11 17:06:35,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 144 transitions, 562 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 17:06:35,863 INFO L231 Difference]: Finished difference. Result has 145 places, 139 transitions, 526 flow [2024-10-11 17:06:35,863 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=526, PETRI_PLACES=145, PETRI_TRANSITIONS=139} [2024-10-11 17:06:35,863 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 44 predicate places. [2024-10-11 17:06:35,864 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 139 transitions, 526 flow [2024-10-11 17:06:35,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 87.0) internal successors, (1566), 18 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:35,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:35,865 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:06:35,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 17:06:36,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:06:36,070 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 17:06:36,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:36,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1094805246, now seen corresponding path program 2 times [2024-10-11 17:06:36,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:36,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636052940] [2024-10-11 17:06:36,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:36,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:36,345 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:06:36,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:36,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636052940] [2024-10-11 17:06:36,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636052940] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:06:36,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892542856] [2024-10-11 17:06:36,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:06:36,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:06:36,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:06:36,347 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:06:36,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 17:06:36,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 17:06:36,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:06:36,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 17:06:36,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:06:36,424 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 [2024-10-11 17:06:36,438 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 [2024-10-11 17:06:36,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:06:36,460 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 [2024-10-11 17:06:36,488 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:06:36,488 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 [2024-10-11 17:06:36,513 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-11 17:06:36,513 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:06:36,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892542856] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:06:36,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:06:36,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2024-10-11 17:06:36,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020027585] [2024-10-11 17:06:36,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:06:36,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 17:06:36,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:36,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 17:06:36,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2024-10-11 17:06:36,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 102 [2024-10-11 17:06:36,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 139 transitions, 526 flow. Second operand has 6 states, 6 states have (on average 71.66666666666667) internal successors, (430), 6 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:36,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:36,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 102 [2024-10-11 17:06:36,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:36,834 INFO L124 PetriNetUnfolderBase]: 306/1276 cut-off events. [2024-10-11 17:06:36,835 INFO L125 PetriNetUnfolderBase]: For 285/295 co-relation queries the response was YES. [2024-10-11 17:06:36,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2443 conditions, 1276 events. 306/1276 cut-off events. For 285/295 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 9047 event pairs, 116 based on Foata normal form. 5/1169 useless extension candidates. Maximal degree in co-relation 2305. Up to 464 conditions per place. [2024-10-11 17:06:36,842 INFO L140 encePairwiseOnDemand]: 87/102 looper letters, 72 selfloop transitions, 36 changer transitions 2/196 dead transitions. [2024-10-11 17:06:36,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 196 transitions, 898 flow [2024-10-11 17:06:36,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 17:06:36,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 17:06:36,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 502 transitions. [2024-10-11 17:06:36,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8202614379084967 [2024-10-11 17:06:36,843 INFO L175 Difference]: Start difference. First operand has 145 places, 139 transitions, 526 flow. Second operand 6 states and 502 transitions. [2024-10-11 17:06:36,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 196 transitions, 898 flow [2024-10-11 17:06:36,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 196 transitions, 874 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-10-11 17:06:36,852 INFO L231 Difference]: Finished difference. Result has 148 places, 171 transitions, 754 flow [2024-10-11 17:06:36,852 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=754, PETRI_PLACES=148, PETRI_TRANSITIONS=171} [2024-10-11 17:06:36,853 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 47 predicate places. [2024-10-11 17:06:36,854 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 171 transitions, 754 flow [2024-10-11 17:06:36,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.66666666666667) internal successors, (430), 6 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:36,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:36,855 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:06:36,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 17:06:37,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:06:37,056 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 17:06:37,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:37,056 INFO L85 PathProgramCache]: Analyzing trace with hash 69964235, now seen corresponding path program 1 times [2024-10-11 17:06:37,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:37,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827514169] [2024-10-11 17:06:37,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:37,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:06:37,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:37,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827514169] [2024-10-11 17:06:37,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827514169] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:06:37,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862402577] [2024-10-11 17:06:37,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:37,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:06:37,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:06:37,281 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:06:37,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 17:06:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:37,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 17:06:37,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:06:37,432 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:06:37,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:06:37,606 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:06:37,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862402577] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:06:37,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:06:37,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-10-11 17:06:37,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923883005] [2024-10-11 17:06:37,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:06:37,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 17:06:37,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:37,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 17:06:37,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-10-11 17:06:37,633 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 102 [2024-10-11 17:06:37,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 171 transitions, 754 flow. Second operand has 23 states, 23 states have (on average 87.08695652173913) internal successors, (2003), 23 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:37,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:37,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 102 [2024-10-11 17:06:37,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:37,911 INFO L124 PetriNetUnfolderBase]: 120/876 cut-off events. [2024-10-11 17:06:37,911 INFO L125 PetriNetUnfolderBase]: For 414/414 co-relation queries the response was YES. [2024-10-11 17:06:37,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1774 conditions, 876 events. 120/876 cut-off events. For 414/414 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5974 event pairs, 33 based on Foata normal form. 3/820 useless extension candidates. Maximal degree in co-relation 1557. Up to 134 conditions per place. [2024-10-11 17:06:37,916 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 21 selfloop transitions, 30 changer transitions 0/188 dead transitions. [2024-10-11 17:06:37,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 188 transitions, 978 flow [2024-10-11 17:06:37,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-11 17:06:37,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-11 17:06:37,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2604 transitions. [2024-10-11 17:06:37,920 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8509803921568627 [2024-10-11 17:06:37,920 INFO L175 Difference]: Start difference. First operand has 148 places, 171 transitions, 754 flow. Second operand 30 states and 2604 transitions. [2024-10-11 17:06:37,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 188 transitions, 978 flow [2024-10-11 17:06:37,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 188 transitions, 954 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-10-11 17:06:37,926 INFO L231 Difference]: Finished difference. Result has 180 places, 181 transitions, 882 flow [2024-10-11 17:06:37,926 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=882, PETRI_PLACES=180, PETRI_TRANSITIONS=181} [2024-10-11 17:06:37,928 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 79 predicate places. [2024-10-11 17:06:37,928 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 181 transitions, 882 flow [2024-10-11 17:06:37,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 87.08695652173913) internal successors, (2003), 23 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:37,929 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:37,929 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:06:37,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 17:06:38,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:06:38,134 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 17:06:38,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:38,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1406641484, now seen corresponding path program 2 times [2024-10-11 17:06:38,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:38,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496943214] [2024-10-11 17:06:38,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:38,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:38,423 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-11 17:06:38,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:38,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496943214] [2024-10-11 17:06:38,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496943214] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:06:38,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:06:38,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 17:06:38,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648612727] [2024-10-11 17:06:38,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:06:38,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 17:06:38,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:38,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 17:06:38,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 17:06:38,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 102 [2024-10-11 17:06:38,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 181 transitions, 882 flow. Second operand has 6 states, 6 states have (on average 78.5) internal successors, (471), 6 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:38,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:38,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 102 [2024-10-11 17:06:38,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:38,727 INFO L124 PetriNetUnfolderBase]: 300/1368 cut-off events. [2024-10-11 17:06:38,728 INFO L125 PetriNetUnfolderBase]: For 892/932 co-relation queries the response was YES. [2024-10-11 17:06:38,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3202 conditions, 1368 events. 300/1368 cut-off events. For 892/932 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10113 event pairs, 66 based on Foata normal form. 10/1332 useless extension candidates. Maximal degree in co-relation 2983. Up to 443 conditions per place. [2024-10-11 17:06:38,735 INFO L140 encePairwiseOnDemand]: 91/102 looper letters, 79 selfloop transitions, 49 changer transitions 0/247 dead transitions. [2024-10-11 17:06:38,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 247 transitions, 1437 flow [2024-10-11 17:06:38,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 17:06:38,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 17:06:38,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 526 transitions. [2024-10-11 17:06:38,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8594771241830066 [2024-10-11 17:06:38,738 INFO L175 Difference]: Start difference. First operand has 180 places, 181 transitions, 882 flow. Second operand 6 states and 526 transitions. [2024-10-11 17:06:38,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 247 transitions, 1437 flow [2024-10-11 17:06:38,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 247 transitions, 1391 flow, removed 5 selfloop flow, removed 18 redundant places. [2024-10-11 17:06:38,747 INFO L231 Difference]: Finished difference. Result has 171 places, 222 transitions, 1252 flow [2024-10-11 17:06:38,747 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1252, PETRI_PLACES=171, PETRI_TRANSITIONS=222} [2024-10-11 17:06:38,747 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 70 predicate places. [2024-10-11 17:06:38,748 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 222 transitions, 1252 flow [2024-10-11 17:06:38,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.5) internal successors, (471), 6 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:38,748 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:38,748 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:06:38,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 17:06:38,748 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 17:06:38,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:38,749 INFO L85 PathProgramCache]: Analyzing trace with hash 621326265, now seen corresponding path program 1 times [2024-10-11 17:06:38,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:38,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343401731] [2024-10-11 17:06:38,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:38,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:39,075 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-11 17:06:39,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:39,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343401731] [2024-10-11 17:06:39,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343401731] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:06:39,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:06:39,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 17:06:39,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080890383] [2024-10-11 17:06:39,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:06:39,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 17:06:39,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:39,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 17:06:39,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 17:06:39,171 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 102 [2024-10-11 17:06:39,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 222 transitions, 1252 flow. Second operand has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:39,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:39,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 102 [2024-10-11 17:06:39,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:39,503 INFO L124 PetriNetUnfolderBase]: 569/2144 cut-off events. [2024-10-11 17:06:39,503 INFO L125 PetriNetUnfolderBase]: For 2485/2542 co-relation queries the response was YES. [2024-10-11 17:06:39,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5774 conditions, 2144 events. 569/2144 cut-off events. For 2485/2542 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 17271 event pairs, 130 based on Foata normal form. 12/2071 useless extension candidates. Maximal degree in co-relation 5572. Up to 803 conditions per place. [2024-10-11 17:06:39,513 INFO L140 encePairwiseOnDemand]: 87/102 looper letters, 118 selfloop transitions, 78 changer transitions 11/316 dead transitions. [2024-10-11 17:06:39,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 316 transitions, 2190 flow [2024-10-11 17:06:39,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 17:06:39,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 17:06:39,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 512 transitions. [2024-10-11 17:06:39,518 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8366013071895425 [2024-10-11 17:06:39,518 INFO L175 Difference]: Start difference. First operand has 171 places, 222 transitions, 1252 flow. Second operand 6 states and 512 transitions. [2024-10-11 17:06:39,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 316 transitions, 2190 flow [2024-10-11 17:06:39,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 316 transitions, 2188 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-11 17:06:39,530 INFO L231 Difference]: Finished difference. Result has 180 places, 270 transitions, 1856 flow [2024-10-11 17:06:39,530 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1250, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1856, PETRI_PLACES=180, PETRI_TRANSITIONS=270} [2024-10-11 17:06:39,530 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 79 predicate places. [2024-10-11 17:06:39,531 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 270 transitions, 1856 flow [2024-10-11 17:06:39,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:39,531 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:39,531 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:06:39,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 17:06:39,531 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 17:06:39,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:39,532 INFO L85 PathProgramCache]: Analyzing trace with hash 504951150, now seen corresponding path program 1 times [2024-10-11 17:06:39,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:39,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749871722] [2024-10-11 17:06:39,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:39,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:40,096 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-11 17:06:40,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:40,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749871722] [2024-10-11 17:06:40,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749871722] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:06:40,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:06:40,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 17:06:40,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024764913] [2024-10-11 17:06:40,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:06:40,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:06:40,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:40,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:06:40,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:06:40,413 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 102 [2024-10-11 17:06:40,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 270 transitions, 1856 flow. Second operand has 10 states, 10 states have (on average 68.1) internal successors, (681), 10 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:40,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:40,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 102 [2024-10-11 17:06:40,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:41,430 INFO L124 PetriNetUnfolderBase]: 1231/4463 cut-off events. [2024-10-11 17:06:41,430 INFO L125 PetriNetUnfolderBase]: For 9222/9462 co-relation queries the response was YES. [2024-10-11 17:06:41,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14336 conditions, 4463 events. 1231/4463 cut-off events. For 9222/9462 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 42315 event pairs, 134 based on Foata normal form. 159/4571 useless extension candidates. Maximal degree in co-relation 14118. Up to 893 conditions per place. [2024-10-11 17:06:41,454 INFO L140 encePairwiseOnDemand]: 80/102 looper letters, 363 selfloop transitions, 78 changer transitions 91/636 dead transitions. [2024-10-11 17:06:41,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 636 transitions, 5975 flow [2024-10-11 17:06:41,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 17:06:41,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 17:06:41,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1104 transitions. [2024-10-11 17:06:41,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.773109243697479 [2024-10-11 17:06:41,457 INFO L175 Difference]: Start difference. First operand has 180 places, 270 transitions, 1856 flow. Second operand 14 states and 1104 transitions. [2024-10-11 17:06:41,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 636 transitions, 5975 flow [2024-10-11 17:06:41,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 636 transitions, 5889 flow, removed 43 selfloop flow, removed 0 redundant places. [2024-10-11 17:06:41,487 INFO L231 Difference]: Finished difference. Result has 204 places, 343 transitions, 2895 flow [2024-10-11 17:06:41,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2895, PETRI_PLACES=204, PETRI_TRANSITIONS=343} [2024-10-11 17:06:41,487 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 103 predicate places. [2024-10-11 17:06:41,487 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 343 transitions, 2895 flow [2024-10-11 17:06:41,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.1) internal successors, (681), 10 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:41,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:41,488 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:06:41,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 17:06:41,488 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 17:06:41,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:41,488 INFO L85 PathProgramCache]: Analyzing trace with hash 291565136, now seen corresponding path program 2 times [2024-10-11 17:06:41,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:41,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461247413] [2024-10-11 17:06:41,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:41,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:42,065 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-11 17:06:42,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:42,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461247413] [2024-10-11 17:06:42,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461247413] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:06:42,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:06:42,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 17:06:42,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469953519] [2024-10-11 17:06:42,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:06:42,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:06:42,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:42,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:06:42,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:06:42,475 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 102 [2024-10-11 17:06:42,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 343 transitions, 2895 flow. Second operand has 10 states, 10 states have (on average 68.1) internal successors, (681), 10 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:42,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:42,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 102 [2024-10-11 17:06:42,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:43,356 INFO L124 PetriNetUnfolderBase]: 1320/4743 cut-off events. [2024-10-11 17:06:43,356 INFO L125 PetriNetUnfolderBase]: For 14844/15130 co-relation queries the response was YES. [2024-10-11 17:06:43,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17833 conditions, 4743 events. 1320/4743 cut-off events. For 14844/15130 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 46068 event pairs, 220 based on Foata normal form. 247/4943 useless extension candidates. Maximal degree in co-relation 17604. Up to 1061 conditions per place. [2024-10-11 17:06:43,387 INFO L140 encePairwiseOnDemand]: 81/102 looper letters, 226 selfloop transitions, 151 changer transitions 77/558 dead transitions. [2024-10-11 17:06:43,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 558 transitions, 5787 flow [2024-10-11 17:06:43,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 17:06:43,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 17:06:43,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 999 transitions. [2024-10-11 17:06:43,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.753393665158371 [2024-10-11 17:06:43,390 INFO L175 Difference]: Start difference. First operand has 204 places, 343 transitions, 2895 flow. Second operand 13 states and 999 transitions. [2024-10-11 17:06:43,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 558 transitions, 5787 flow [2024-10-11 17:06:43,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 558 transitions, 5781 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-11 17:06:43,456 INFO L231 Difference]: Finished difference. Result has 220 places, 382 transitions, 3833 flow [2024-10-11 17:06:43,456 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=2891, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3833, PETRI_PLACES=220, PETRI_TRANSITIONS=382} [2024-10-11 17:06:43,457 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 119 predicate places. [2024-10-11 17:06:43,457 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 382 transitions, 3833 flow [2024-10-11 17:06:43,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.1) internal successors, (681), 10 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:43,457 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:43,457 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:06:43,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 17:06:43,458 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 17:06:43,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:43,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1363687538, now seen corresponding path program 3 times [2024-10-11 17:06:43,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:43,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183561755] [2024-10-11 17:06:43,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:43,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:44,031 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-11 17:06:44,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:44,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183561755] [2024-10-11 17:06:44,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183561755] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:06:44,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:06:44,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 17:06:44,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613067798] [2024-10-11 17:06:44,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:06:44,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:06:44,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:44,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:06:44,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:06:44,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 102 [2024-10-11 17:06:44,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 382 transitions, 3833 flow. Second operand has 10 states, 10 states have (on average 68.1) internal successors, (681), 10 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:44,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:44,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 102 [2024-10-11 17:06:44,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:45,864 INFO L124 PetriNetUnfolderBase]: 2269/7510 cut-off events. [2024-10-11 17:06:45,864 INFO L125 PetriNetUnfolderBase]: For 40684/41149 co-relation queries the response was YES. [2024-10-11 17:06:45,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33850 conditions, 7510 events. 2269/7510 cut-off events. For 40684/41149 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 78614 event pairs, 278 based on Foata normal form. 251/7669 useless extension candidates. Maximal degree in co-relation 33613. Up to 1482 conditions per place. [2024-10-11 17:06:45,912 INFO L140 encePairwiseOnDemand]: 84/102 looper letters, 475 selfloop transitions, 157 changer transitions 58/794 dead transitions. [2024-10-11 17:06:45,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 794 transitions, 9967 flow [2024-10-11 17:06:45,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 17:06:45,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 17:06:45,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1150 transitions. [2024-10-11 17:06:45,916 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7516339869281046 [2024-10-11 17:06:45,916 INFO L175 Difference]: Start difference. First operand has 220 places, 382 transitions, 3833 flow. Second operand 15 states and 1150 transitions. [2024-10-11 17:06:45,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 794 transitions, 9967 flow [2024-10-11 17:06:46,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 794 transitions, 9859 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-10-11 17:06:46,222 INFO L231 Difference]: Finished difference. Result has 237 places, 480 transitions, 5846 flow [2024-10-11 17:06:46,222 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=3804, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5846, PETRI_PLACES=237, PETRI_TRANSITIONS=480} [2024-10-11 17:06:46,222 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 136 predicate places. [2024-10-11 17:06:46,222 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 480 transitions, 5846 flow [2024-10-11 17:06:46,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.1) internal successors, (681), 10 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:46,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:46,223 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:06:46,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 17:06:46,223 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 17:06:46,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:46,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1713187702, now seen corresponding path program 4 times [2024-10-11 17:06:46,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:46,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379596723] [2024-10-11 17:06:46,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:46,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:54,938 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:06:54,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:54,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379596723] [2024-10-11 17:06:54,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379596723] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:06:54,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148803522] [2024-10-11 17:06:54,938 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 17:06:54,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:06:54,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:06:54,940 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:06:54,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 17:06:55,039 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 17:06:55,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:06:55,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-10-11 17:06:55,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:06:55,101 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 16 treesize of output 12 [2024-10-11 17:06:55,146 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 [2024-10-11 17:06:55,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-10-11 17:06:55,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2024-10-11 17:06:55,411 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-11 17:06:55,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 25 treesize of output 11 [2024-10-11 17:06:55,430 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:06:55,430 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 [2024-10-11 17:06:55,470 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2024-10-11 17:06:55,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 63 treesize of output 71 [2024-10-11 17:06:55,563 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-11 17:06:55,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:06:56,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 49 treesize of output 47 [2024-10-11 17:06:56,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 21 treesize of output 19 [2024-10-11 17:06:56,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 8 [2024-10-11 17:06:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-11 17:06:56,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148803522] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 17:06:56,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:06:56,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [35, 25] total 48 [2024-10-11 17:06:56,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231874122] [2024-10-11 17:06:56,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:06:56,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:06:56,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:56,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:06:56,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=2162, Unknown=0, NotChecked=0, Total=2352 [2024-10-11 17:06:56,448 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 102 [2024-10-11 17:06:56,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 480 transitions, 5846 flow. Second operand has 10 states, 10 states have (on average 66.1) internal successors, (661), 10 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:56,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:56,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 102 [2024-10-11 17:06:56,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:59,192 INFO L124 PetriNetUnfolderBase]: 3160/9689 cut-off events. [2024-10-11 17:06:59,192 INFO L125 PetriNetUnfolderBase]: For 68281/69166 co-relation queries the response was YES. [2024-10-11 17:06:59,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47950 conditions, 9689 events. 3160/9689 cut-off events. For 68281/69166 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 102361 event pairs, 314 based on Foata normal form. 427/10023 useless extension candidates. Maximal degree in co-relation 47737. Up to 1971 conditions per place. [2024-10-11 17:06:59,259 INFO L140 encePairwiseOnDemand]: 76/102 looper letters, 555 selfloop transitions, 320 changer transitions 65/1034 dead transitions. [2024-10-11 17:06:59,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 1034 transitions, 13897 flow [2024-10-11 17:06:59,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 17:06:59,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-11 17:06:59,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1443 transitions. [2024-10-11 17:06:59,263 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7445820433436533 [2024-10-11 17:06:59,263 INFO L175 Difference]: Start difference. First operand has 237 places, 480 transitions, 5846 flow. Second operand 19 states and 1443 transitions. [2024-10-11 17:06:59,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 1034 transitions, 13897 flow [2024-10-11 17:06:59,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 1034 transitions, 13713 flow, removed 75 selfloop flow, removed 5 redundant places. [2024-10-11 17:06:59,644 INFO L231 Difference]: Finished difference. Result has 263 places, 644 transitions, 9527 flow [2024-10-11 17:06:59,644 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=5745, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9527, PETRI_PLACES=263, PETRI_TRANSITIONS=644} [2024-10-11 17:06:59,644 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 162 predicate places. [2024-10-11 17:06:59,645 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 644 transitions, 9527 flow [2024-10-11 17:06:59,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 66.1) internal successors, (661), 10 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:59,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:59,645 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:06:59,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 17:06:59,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 17:06:59,846 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 17:06:59,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:59,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1856888934, now seen corresponding path program 5 times [2024-10-11 17:06:59,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:59,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272157583] [2024-10-11 17:06:59,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:59,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:07:07,714 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:07:07,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:07:07,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272157583] [2024-10-11 17:07:07,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272157583] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:07:07,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992275414] [2024-10-11 17:07:07,714 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 17:07:07,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:07:07,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:07:07,716 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:07:07,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 17:07:07,829 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-10-11 17:07:07,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:07:07,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-10-11 17:07:07,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:07:07,868 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 16 treesize of output 12 [2024-10-11 17:07:07,964 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 [2024-10-11 17:07:08,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-10-11 17:07:08,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2024-10-11 17:07:08,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2024-10-11 17:07:08,173 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-11 17:07:08,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 25 treesize of output 11 [2024-10-11 17:07:08,201 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2024-10-11 17:07:08,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 63 treesize of output 71 [2024-10-11 17:07:08,269 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-11 17:07:08,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:07:08,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 49 treesize of output 47 [2024-10-11 17:07:08,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 21 treesize of output 19 [2024-10-11 17:07:08,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 8 [2024-10-11 17:07:08,662 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-11 17:07:08,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992275414] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 17:07:08,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:07:08,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [35, 23] total 49 [2024-10-11 17:07:08,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010550047] [2024-10-11 17:07:08,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:07:08,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:07:08,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:07:08,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:07:08,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2250, Unknown=0, NotChecked=0, Total=2450 [2024-10-11 17:07:08,949 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 102 [2024-10-11 17:07:08,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 644 transitions, 9527 flow. Second operand has 10 states, 10 states have (on average 66.1) internal successors, (661), 10 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:07:08,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:07:08,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 102 [2024-10-11 17:07:08,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:07:12,118 INFO L124 PetriNetUnfolderBase]: 3794/11280 cut-off events. [2024-10-11 17:07:12,119 INFO L125 PetriNetUnfolderBase]: For 106956/107960 co-relation queries the response was YES. [2024-10-11 17:07:12,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61896 conditions, 11280 events. 3794/11280 cut-off events. For 106956/107960 co-relation queries the response was YES. Maximal size of possible extension queue 846. Compared 121545 event pairs, 357 based on Foata normal form. 435/11596 useless extension candidates. Maximal degree in co-relation 61638. Up to 2261 conditions per place. [2024-10-11 17:07:12,189 INFO L140 encePairwiseOnDemand]: 75/102 looper letters, 688 selfloop transitions, 375 changer transitions 70/1227 dead transitions. [2024-10-11 17:07:12,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 1227 transitions, 18041 flow [2024-10-11 17:07:12,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 17:07:12,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-11 17:07:12,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1339 transitions. [2024-10-11 17:07:12,191 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7722029988465975 [2024-10-11 17:07:12,191 INFO L175 Difference]: Start difference. First operand has 263 places, 644 transitions, 9527 flow. Second operand 17 states and 1339 transitions. [2024-10-11 17:07:12,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 1227 transitions, 18041 flow [2024-10-11 17:07:12,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 1227 transitions, 17745 flow, removed 62 selfloop flow, removed 4 redundant places. [2024-10-11 17:07:12,818 INFO L231 Difference]: Finished difference. Result has 287 places, 764 transitions, 12478 flow [2024-10-11 17:07:12,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=9260, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=12478, PETRI_PLACES=287, PETRI_TRANSITIONS=764} [2024-10-11 17:07:12,819 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 186 predicate places. [2024-10-11 17:07:12,819 INFO L471 AbstractCegarLoop]: Abstraction has has 287 places, 764 transitions, 12478 flow [2024-10-11 17:07:12,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 66.1) internal successors, (661), 10 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:07:12,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:07:12,819 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:07:12,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 17:07:13,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:07:13,020 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 17:07:13,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:07:13,021 INFO L85 PathProgramCache]: Analyzing trace with hash -383903984, now seen corresponding path program 6 times [2024-10-11 17:07:13,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:07:13,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948531863] [2024-10-11 17:07:13,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:07:13,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:07:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:07:13,552 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-11 17:07:13,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:07:13,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948531863] [2024-10-11 17:07:13,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948531863] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:07:13,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:07:13,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 17:07:13,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116994531] [2024-10-11 17:07:13,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:07:13,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:07:13,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:07:13,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:07:13,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:07:13,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 102 [2024-10-11 17:07:13,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 764 transitions, 12478 flow. Second operand has 10 states, 10 states have (on average 68.1) internal successors, (681), 10 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:07:13,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:07:13,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 102 [2024-10-11 17:07:13,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:07:16,586 INFO L124 PetriNetUnfolderBase]: 3624/11534 cut-off events. [2024-10-11 17:07:16,586 INFO L125 PetriNetUnfolderBase]: For 146843/147833 co-relation queries the response was YES. [2024-10-11 17:07:16,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68589 conditions, 11534 events. 3624/11534 cut-off events. For 146843/147833 co-relation queries the response was YES. Maximal size of possible extension queue 880. Compared 129204 event pairs, 596 based on Foata normal form. 467/11844 useless extension candidates. Maximal degree in co-relation 68318. Up to 2619 conditions per place. [2024-10-11 17:07:16,675 INFO L140 encePairwiseOnDemand]: 83/102 looper letters, 408 selfloop transitions, 392 changer transitions 38/944 dead transitions. [2024-10-11 17:07:16,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 944 transitions, 16675 flow [2024-10-11 17:07:16,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 17:07:16,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 17:07:16,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 991 transitions. [2024-10-11 17:07:16,677 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7473604826546003 [2024-10-11 17:07:16,677 INFO L175 Difference]: Start difference. First operand has 287 places, 764 transitions, 12478 flow. Second operand 13 states and 991 transitions. [2024-10-11 17:07:16,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 944 transitions, 16675 flow [2024-10-11 17:07:17,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 944 transitions, 16359 flow, removed 102 selfloop flow, removed 2 redundant places. [2024-10-11 17:07:17,594 INFO L231 Difference]: Finished difference. Result has 306 places, 809 transitions, 14312 flow [2024-10-11 17:07:17,595 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=12190, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=351, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14312, PETRI_PLACES=306, PETRI_TRANSITIONS=809} [2024-10-11 17:07:17,595 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 205 predicate places. [2024-10-11 17:07:17,595 INFO L471 AbstractCegarLoop]: Abstraction has has 306 places, 809 transitions, 14312 flow [2024-10-11 17:07:17,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.1) internal successors, (681), 10 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:07:17,596 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:07:17,596 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:07:17,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 17:07:17,596 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 17:07:17,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:07:17,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1510066717, now seen corresponding path program 1 times [2024-10-11 17:07:17,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:07:17,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100486667] [2024-10-11 17:07:17,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:07:17,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:07:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:07:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-11 17:07:17,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:07:17,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100486667] [2024-10-11 17:07:17,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100486667] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:07:17,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:07:17,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 17:07:17,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996304504] [2024-10-11 17:07:17,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:07:17,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:07:17,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:07:17,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:07:17,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:07:18,191 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 102 [2024-10-11 17:07:18,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 809 transitions, 14312 flow. Second operand has 10 states, 10 states have (on average 72.5) internal successors, (725), 10 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:07:18,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:07:18,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 102 [2024-10-11 17:07:18,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:07:21,005 INFO L124 PetriNetUnfolderBase]: 3194/10819 cut-off events. [2024-10-11 17:07:21,006 INFO L125 PetriNetUnfolderBase]: For 162499/163467 co-relation queries the response was YES. [2024-10-11 17:07:21,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65777 conditions, 10819 events. 3194/10819 cut-off events. For 162499/163467 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 124589 event pairs, 280 based on Foata normal form. 429/11118 useless extension candidates. Maximal degree in co-relation 65497. Up to 2168 conditions per place. [2024-10-11 17:07:21,109 INFO L140 encePairwiseOnDemand]: 85/102 looper letters, 678 selfloop transitions, 171 changer transitions 95/1205 dead transitions. [2024-10-11 17:07:21,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 1205 transitions, 22834 flow [2024-10-11 17:07:21,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 17:07:21,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 17:07:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1256 transitions. [2024-10-11 17:07:21,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7696078431372549 [2024-10-11 17:07:21,111 INFO L175 Difference]: Start difference. First operand has 306 places, 809 transitions, 14312 flow. Second operand 16 states and 1256 transitions. [2024-10-11 17:07:21,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 1205 transitions, 22834 flow [2024-10-11 17:07:22,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 1205 transitions, 22359 flow, removed 85 selfloop flow, removed 5 redundant places. [2024-10-11 17:07:22,344 INFO L231 Difference]: Finished difference. Result has 329 places, 860 transitions, 15170 flow [2024-10-11 17:07:22,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=13981, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=809, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=15170, PETRI_PLACES=329, PETRI_TRANSITIONS=860} [2024-10-11 17:07:22,345 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 228 predicate places. [2024-10-11 17:07:22,345 INFO L471 AbstractCegarLoop]: Abstraction has has 329 places, 860 transitions, 15170 flow [2024-10-11 17:07:22,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 72.5) internal successors, (725), 10 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:07:22,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:07:22,345 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:07:22,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 17:07:22,346 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 17:07:22,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:07:22,346 INFO L85 PathProgramCache]: Analyzing trace with hash -233936112, now seen corresponding path program 7 times [2024-10-11 17:07:22,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:07:22,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844559662] [2024-10-11 17:07:22,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:07:22,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:07:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:07:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:07:29,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:07:29,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844559662] [2024-10-11 17:07:29,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844559662] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:07:29,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793968225] [2024-10-11 17:07:29,387 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 17:07:29,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:07:29,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:07:29,388 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:07:29,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 17:07:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:07:29,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-10-11 17:07:29,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:07:29,606 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 16 treesize of output 12 [2024-10-11 17:07:29,640 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 [2024-10-11 17:07:29,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-10-11 17:07:29,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2024-10-11 17:07:29,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2024-10-11 17:07:29,893 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-11 17:07:29,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 25 treesize of output 11 [2024-10-11 17:07:29,930 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2024-10-11 17:07:29,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 63 treesize of output 71 [2024-10-11 17:07:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-11 17:07:30,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:07:30,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 49 treesize of output 47 [2024-10-11 17:07:30,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 21 treesize of output 19 [2024-10-11 17:07:30,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 15 treesize of output 8 [2024-10-11 17:07:30,511 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-11 17:07:30,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793968225] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 17:07:30,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:07:30,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [35, 25] total 49 [2024-10-11 17:07:30,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697290402] [2024-10-11 17:07:30,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:07:30,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:07:30,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:07:30,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:07:30,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=2255, Unknown=0, NotChecked=0, Total=2450 [2024-10-11 17:07:30,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 102 [2024-10-11 17:07:30,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 860 transitions, 15170 flow. Second operand has 10 states, 10 states have (on average 66.1) internal successors, (661), 10 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:07:30,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:07:30,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 102 [2024-10-11 17:07:30,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:07:35,402 INFO L124 PetriNetUnfolderBase]: 4148/12980 cut-off events. [2024-10-11 17:07:35,402 INFO L125 PetriNetUnfolderBase]: For 211168/212149 co-relation queries the response was YES. [2024-10-11 17:07:35,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84585 conditions, 12980 events. 4148/12980 cut-off events. For 211168/212149 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 146497 event pairs, 441 based on Foata normal form. 353/13224 useless extension candidates. Maximal degree in co-relation 84294. Up to 2488 conditions per place. [2024-10-11 17:07:35,530 INFO L140 encePairwiseOnDemand]: 75/102 looper letters, 850 selfloop transitions, 514 changer transitions 94/1552 dead transitions. [2024-10-11 17:07:35,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 1552 transitions, 28204 flow [2024-10-11 17:07:35,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 17:07:35,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 17:07:35,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1720 transitions. [2024-10-11 17:07:35,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7664884135472371 [2024-10-11 17:07:35,533 INFO L175 Difference]: Start difference. First operand has 329 places, 860 transitions, 15170 flow. Second operand 22 states and 1720 transitions. [2024-10-11 17:07:35,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 1552 transitions, 28204 flow [2024-10-11 17:07:37,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 1552 transitions, 27944 flow, removed 83 selfloop flow, removed 2 redundant places. [2024-10-11 17:07:37,053 INFO L231 Difference]: Finished difference. Result has 361 places, 1027 transitions, 20022 flow [2024-10-11 17:07:37,054 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=15036, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=860, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=348, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=20022, PETRI_PLACES=361, PETRI_TRANSITIONS=1027} [2024-10-11 17:07:37,054 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 260 predicate places. [2024-10-11 17:07:37,054 INFO L471 AbstractCegarLoop]: Abstraction has has 361 places, 1027 transitions, 20022 flow [2024-10-11 17:07:37,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 66.1) internal successors, (661), 10 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:07:37,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:07:37,055 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:07:37,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 17:07:37,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 17:07:37,255 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 17:07:37,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:07:37,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1630363942, now seen corresponding path program 8 times [2024-10-11 17:07:37,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:07:37,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823863089] [2024-10-11 17:07:37,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:07:37,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:07:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:07:40,792 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:07:40,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:07:40,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823863089] [2024-10-11 17:07:40,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823863089] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:07:40,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020694266] [2024-10-11 17:07:40,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:07:40,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:07:40,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:07:40,794 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:07:40,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 17:07:40,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 17:07:40,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:07:40,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-11 17:07:40,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:07:40,885 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 16 treesize of output 12 [2024-10-11 17:07:40,994 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 [2024-10-11 17:07:41,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-10-11 17:07:41,077 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-11 17:07:41,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 25 treesize of output 11 [2024-10-11 17:07:41,100 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2024-10-11 17:07:41,100 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 2 case distinctions, treesize of input 39 treesize of output 41 [2024-10-11 17:07:41,151 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-11 17:07:41,152 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 51 treesize of output 56 [2024-10-11 17:07:41,206 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-11 17:07:41,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 71 [2024-10-11 17:07:41,250 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-11 17:07:41,251 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:07:41,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020694266] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:07:41,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:07:41,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [33] total 40 [2024-10-11 17:07:41,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682004655] [2024-10-11 17:07:41,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:07:41,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:07:41,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:07:41,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:07:41,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1508, Unknown=0, NotChecked=0, Total=1640 [2024-10-11 17:07:42,040 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 102 [2024-10-11 17:07:42,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 1027 transitions, 20022 flow. Second operand has 10 states, 10 states have (on average 67.1) internal successors, (671), 10 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:07:42,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:07:42,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 102 [2024-10-11 17:07:42,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:07:46,446 INFO L124 PetriNetUnfolderBase]: 3816/12726 cut-off events. [2024-10-11 17:07:46,446 INFO L125 PetriNetUnfolderBase]: For 237375/238332 co-relation queries the response was YES. [2024-10-11 17:07:46,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88030 conditions, 12726 events. 3816/12726 cut-off events. For 237375/238332 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 147407 event pairs, 622 based on Foata normal form. 224/12797 useless extension candidates. Maximal degree in co-relation 87725. Up to 3708 conditions per place. [2024-10-11 17:07:46,570 INFO L140 encePairwiseOnDemand]: 86/102 looper letters, 923 selfloop transitions, 337 changer transitions 43/1402 dead transitions. [2024-10-11 17:07:46,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 1402 transitions, 29456 flow [2024-10-11 17:07:46,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 17:07:46,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 17:07:46,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 796 transitions. [2024-10-11 17:07:46,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7803921568627451 [2024-10-11 17:07:46,572 INFO L175 Difference]: Start difference. First operand has 361 places, 1027 transitions, 20022 flow. Second operand 10 states and 796 transitions. [2024-10-11 17:07:46,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 1402 transitions, 29456 flow [2024-10-11 17:07:48,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 1402 transitions, 28975 flow, removed 176 selfloop flow, removed 2 redundant places. [2024-10-11 17:07:48,245 INFO L231 Difference]: Finished difference. Result has 373 places, 1076 transitions, 21645 flow [2024-10-11 17:07:48,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=19633, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1027, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=714, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=21645, PETRI_PLACES=373, PETRI_TRANSITIONS=1076} [2024-10-11 17:07:48,246 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 272 predicate places. [2024-10-11 17:07:48,246 INFO L471 AbstractCegarLoop]: Abstraction has has 373 places, 1076 transitions, 21645 flow [2024-10-11 17:07:48,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 67.1) internal successors, (671), 10 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:07:48,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:07:48,246 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:07:48,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-11 17:07:48,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 17:07:48,447 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 17:07:48,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:07:48,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1161962510, now seen corresponding path program 9 times [2024-10-11 17:07:48,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:07:48,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728698959] [2024-10-11 17:07:48,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:07:48,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:07:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:07:48,875 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-11 17:07:48,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:07:48,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728698959] [2024-10-11 17:07:48,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728698959] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:07:48,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:07:48,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 17:07:48,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777722673] [2024-10-11 17:07:48,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:07:48,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:07:48,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:07:48,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:07:48,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:07:49,139 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 102 [2024-10-11 17:07:49,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 1076 transitions, 21645 flow. Second operand has 10 states, 10 states have (on average 68.1) internal successors, (681), 10 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:07:49,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:07:49,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 102 [2024-10-11 17:07:49,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand