./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_06-tricky_address1.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_06-tricky_address1.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 99f794c04b6feffb38c1e5c415a278bf34dda5287d389b184a9a7d818ab0b70e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 17:06:30,851 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 17:06:30,916 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-11 17:06:30,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 17:06:30,924 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 17:06:30,944 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 17:06:30,945 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 17:06:30,946 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 17:06:30,946 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 17:06:30,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 17:06:30,950 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 17:06:30,951 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 17:06:30,952 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 17:06:30,954 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 17:06:30,954 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 17:06:30,955 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 17:06:30,955 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 17:06:30,955 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 17:06:30,956 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 17:06:30,956 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 17:06:30,958 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 17:06:30,959 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 17:06:30,959 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-11 17:06:30,959 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 17:06:30,959 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 17:06:30,960 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 17:06:30,960 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 17:06:30,960 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 17:06:30,960 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 17:06:30,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 17:06:30,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 17:06:30,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:06:30,961 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 17:06:30,962 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 17:06:30,962 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 17:06:30,962 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 17:06:30,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 17:06:30,963 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 17:06:30,963 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 17:06:30,964 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 17:06:30,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 17:06:30,964 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99f794c04b6feffb38c1e5c415a278bf34dda5287d389b184a9a7d818ab0b70e [2024-10-11 17:06:31,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 17:06:31,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 17:06:31,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 17:06:31,235 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 17:06:31,236 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 17:06:31,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i [2024-10-11 17:06:32,742 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 17:06:33,007 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 17:06:33,008 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i [2024-10-11 17:06:33,033 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/21c655e89/5854669e73c34055b3702e63be0e70e0/FLAGcf5fe8545 [2024-10-11 17:06:33,321 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/21c655e89/5854669e73c34055b3702e63be0e70e0 [2024-10-11 17:06:33,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 17:06:33,326 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 17:06:33,327 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 17:06:33,327 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 17:06:33,333 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 17:06:33,334 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:06:33" (1/1) ... [2024-10-11 17:06:33,335 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3231dc15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:33, skipping insertion in model container [2024-10-11 17:06:33,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:06:33" (1/1) ... [2024-10-11 17:06:33,382 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 17:06:33,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:06:33,866 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 17:06:33,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:06:33,968 INFO L204 MainTranslator]: Completed translation [2024-10-11 17:06:33,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:33 WrapperNode [2024-10-11 17:06:33,969 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 17:06:33,970 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 17:06:33,970 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 17:06:33,971 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 17:06:33,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:33" (1/1) ... [2024-10-11 17:06:34,003 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:33" (1/1) ... [2024-10-11 17:06:34,040 INFO L138 Inliner]: procedures = 264, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 92 [2024-10-11 17:06:34,040 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 17:06:34,041 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 17:06:34,041 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 17:06:34,041 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 17:06:34,051 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:33" (1/1) ... [2024-10-11 17:06:34,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:33" (1/1) ... [2024-10-11 17:06:34,055 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:33" (1/1) ... [2024-10-11 17:06:34,055 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:33" (1/1) ... [2024-10-11 17:06:34,073 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:33" (1/1) ... [2024-10-11 17:06:34,077 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:33" (1/1) ... [2024-10-11 17:06:34,079 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:33" (1/1) ... [2024-10-11 17:06:34,084 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:33" (1/1) ... [2024-10-11 17:06:34,090 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 17:06:34,091 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 17:06:34,091 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 17:06:34,091 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 17:06:34,092 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:33" (1/1) ... [2024-10-11 17:06:34,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:06:34,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:06:34,127 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 17:06:34,130 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 17:06:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 17:06:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-11 17:06:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-11 17:06:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 17:06:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 17:06:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-11 17:06:34,179 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-11 17:06:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 17:06:34,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 17:06:34,181 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 17:06:34,299 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 17:06:34,301 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 17:06:34,490 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 17:06:34,490 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 17:06:34,527 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 17:06:34,527 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 17:06:34,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:06:34 BoogieIcfgContainer [2024-10-11 17:06:34,532 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 17:06:34,534 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 17:06:34,534 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 17:06:34,538 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 17:06:34,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 05:06:33" (1/3) ... [2024-10-11 17:06:34,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a508d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:06:34, skipping insertion in model container [2024-10-11 17:06:34,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:06:33" (2/3) ... [2024-10-11 17:06:34,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a508d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:06:34, skipping insertion in model container [2024-10-11 17:06:34,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:06:34" (3/3) ... [2024-10-11 17:06:34,542 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_06-tricky_address1.i [2024-10-11 17:06:34,558 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 17:06:34,558 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-11 17:06:34,559 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 17:06:34,626 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 17:06:34,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 208 flow [2024-10-11 17:06:34,701 INFO L124 PetriNetUnfolderBase]: 4/101 cut-off events. [2024-10-11 17:06:34,701 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 17:06:34,706 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 17:06:34,706 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 102 transitions, 208 flow [2024-10-11 17:06:34,710 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 101 transitions, 205 flow [2024-10-11 17:06:34,721 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 17:06:34,729 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;@2986db1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 17:06:34,730 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-11 17:06:34,749 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 17:06:34,750 INFO L124 PetriNetUnfolderBase]: 4/54 cut-off events. [2024-10-11 17:06:34,750 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 17:06:34,750 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:34,751 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 17:06:34,752 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 17:06:34,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:34,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1729651413, now seen corresponding path program 1 times [2024-10-11 17:06:34,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:34,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781611194] [2024-10-11 17:06:34,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:34,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:35,129 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 17:06:35,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:35,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781611194] [2024-10-11 17:06:35,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781611194] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:06:35,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:06:35,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:06:35,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739483472] [2024-10-11 17:06:35,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:06:35,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:06:35,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:35,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:06:35,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:06:35,202 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 102 [2024-10-11 17:06:35,205 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 17:06:35,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:35,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 102 [2024-10-11 17:06:35,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:35,262 INFO L124 PetriNetUnfolderBase]: 7/162 cut-off events. [2024-10-11 17:06:35,262 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 17:06:35,263 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 17:06:35,265 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 10 selfloop transitions, 2 changer transitions 1/99 dead transitions. [2024-10-11 17:06:35,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 99 transitions, 225 flow [2024-10-11 17:06:35,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:06:35,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:06:35,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2024-10-11 17:06:35,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9183006535947712 [2024-10-11 17:06:35,279 INFO L175 Difference]: Start difference. First operand has 101 places, 101 transitions, 205 flow. Second operand 3 states and 281 transitions. [2024-10-11 17:06:35,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 99 transitions, 225 flow [2024-10-11 17:06:35,283 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 17:06:35,286 INFO L231 Difference]: Finished difference. Result has 103 places, 98 transitions, 208 flow [2024-10-11 17:06:35,290 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 17:06:35,293 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 2 predicate places. [2024-10-11 17:06:35,294 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 98 transitions, 208 flow [2024-10-11 17:06:35,295 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 17:06:35,295 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:35,295 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 17:06:35,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 17:06:35,296 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 17:06:35,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:35,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1133289900, now seen corresponding path program 1 times [2024-10-11 17:06:35,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:35,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062806535] [2024-10-11 17:06:35,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:35,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:35,452 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 17:06:35,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:35,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062806535] [2024-10-11 17:06:35,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062806535] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:06:35,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743186253] [2024-10-11 17:06:35,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:35,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:06:35,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:06:35,456 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 17:06:35,459 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 17:06:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:35,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 17:06:35,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:06:35,627 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 17:06:35,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:06:35,679 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 17:06:35,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743186253] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:06:35,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:06:35,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 17:06:35,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298923832] [2024-10-11 17:06:35,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:06:35,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:06:35,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:35,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:06:35,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:06:35,712 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 102 [2024-10-11 17:06:35,713 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 17:06:35,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:35,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 102 [2024-10-11 17:06:35,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:35,850 INFO L124 PetriNetUnfolderBase]: 7/168 cut-off events. [2024-10-11 17:06:35,851 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 17:06:35,852 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 17:06:35,853 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 14 selfloop transitions, 9 changer transitions 0/106 dead transitions. [2024-10-11 17:06:35,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 106 transitions, 272 flow [2024-10-11 17:06:35,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 17:06:35,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 17:06:35,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 790 transitions. [2024-10-11 17:06:35,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8605664488017429 [2024-10-11 17:06:35,862 INFO L175 Difference]: Start difference. First operand has 103 places, 98 transitions, 208 flow. Second operand 9 states and 790 transitions. [2024-10-11 17:06:35,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 106 transitions, 272 flow [2024-10-11 17:06:35,864 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 17:06:35,867 INFO L231 Difference]: Finished difference. Result has 112 places, 104 transitions, 256 flow [2024-10-11 17:06:35,868 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 17:06:35,869 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 11 predicate places. [2024-10-11 17:06:35,870 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 104 transitions, 256 flow [2024-10-11 17:06:35,870 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 17:06:35,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:35,871 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 17:06:35,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 17:06:36,071 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 17:06:36,072 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 17:06:36,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:36,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1782452404, now seen corresponding path program 2 times [2024-10-11 17:06:36,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:36,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535079661] [2024-10-11 17:06:36,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:36,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:36,324 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 17:06:36,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:36,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535079661] [2024-10-11 17:06:36,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535079661] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:06:36,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069880276] [2024-10-11 17:06:36,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:06:36,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:06:36,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:06:36,330 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 17:06:36,331 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 17:06:36,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 17:06:36,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:06:36,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 17:06:36,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:06:36,455 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 17:06:36,475 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 17:06:36,509 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:06:36,509 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 17:06:36,557 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:06:36,558 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 17:06:36,596 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 17:06:36,596 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:06:36,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069880276] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:06:36,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:06:36,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-10-11 17:06:36,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33387437] [2024-10-11 17:06:36,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:06:36,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 17:06:36,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:36,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 17:06:36,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-11 17:06:36,794 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 102 [2024-10-11 17:06:36,795 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 17:06:36,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:36,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 102 [2024-10-11 17:06:36,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:36,955 INFO L124 PetriNetUnfolderBase]: 103/481 cut-off events. [2024-10-11 17:06:36,955 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-11 17:06:36,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 481 events. 103/481 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2339 event pairs, 41 based on Foata normal form. 0/444 useless extension candidates. Maximal degree in co-relation 693. Up to 184 conditions per place. [2024-10-11 17:06:36,960 INFO L140 encePairwiseOnDemand]: 91/102 looper letters, 31 selfloop transitions, 22 changer transitions 0/133 dead transitions. [2024-10-11 17:06:36,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 133 transitions, 420 flow [2024-10-11 17:06:36,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 17:06:36,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 17:06:36,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 504 transitions. [2024-10-11 17:06:36,964 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8235294117647058 [2024-10-11 17:06:36,964 INFO L175 Difference]: Start difference. First operand has 112 places, 104 transitions, 256 flow. Second operand 6 states and 504 transitions. [2024-10-11 17:06:36,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 133 transitions, 420 flow [2024-10-11 17:06:36,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 133 transitions, 414 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-11 17:06:36,968 INFO L231 Difference]: Finished difference. Result has 121 places, 125 transitions, 400 flow [2024-10-11 17:06:36,968 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=400, PETRI_PLACES=121, PETRI_TRANSITIONS=125} [2024-10-11 17:06:36,969 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 20 predicate places. [2024-10-11 17:06:36,969 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 125 transitions, 400 flow [2024-10-11 17:06:36,970 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 17:06:36,970 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:36,970 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 17:06:36,988 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 17:06:37,174 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 17:06:37,176 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 17:06:37,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:37,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1803998658, now seen corresponding path program 1 times [2024-10-11 17:06:37,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:37,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655673549] [2024-10-11 17:06:37,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:37,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:37,374 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 17:06:37,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:37,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655673549] [2024-10-11 17:06:37,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655673549] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:06:37,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355971946] [2024-10-11 17:06:37,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:37,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:06:37,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:06:37,381 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 17:06:37,382 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 17:06:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:37,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 17:06:37,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:06:37,530 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 17:06:37,530 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:06:37,646 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 17:06:37,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355971946] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:06:37,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:06:37,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-10-11 17:06:37,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830970909] [2024-10-11 17:06:37,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:06:37,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 17:06:37,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:37,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 17:06:37,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-11 17:06:37,692 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 102 [2024-10-11 17:06:37,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 125 transitions, 400 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 17:06:37,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:37,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 102 [2024-10-11 17:06:37,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:37,943 INFO L124 PetriNetUnfolderBase]: 38/337 cut-off events. [2024-10-11 17:06:37,943 INFO L125 PetriNetUnfolderBase]: For 57/62 co-relation queries the response was YES. [2024-10-11 17:06:37,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 611 conditions, 337 events. 38/337 cut-off events. For 57/62 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1207 event pairs, 11 based on Foata normal form. 4/325 useless extension candidates. Maximal degree in co-relation 482. Up to 51 conditions per place. [2024-10-11 17:06:37,946 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 18 selfloop transitions, 21 changer transitions 0/143 dead transitions. [2024-10-11 17:06:37,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 143 transitions, 566 flow [2024-10-11 17:06:37,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 17:06:37,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 17:06:37,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1828 transitions. [2024-10-11 17:06:37,950 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8534080298786181 [2024-10-11 17:06:37,951 INFO L175 Difference]: Start difference. First operand has 121 places, 125 transitions, 400 flow. Second operand 21 states and 1828 transitions. [2024-10-11 17:06:37,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 143 transitions, 566 flow [2024-10-11 17:06:37,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 143 transitions, 566 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 17:06:37,960 INFO L231 Difference]: Finished difference. Result has 146 places, 138 transitions, 530 flow [2024-10-11 17:06:37,960 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=530, PETRI_PLACES=146, PETRI_TRANSITIONS=138} [2024-10-11 17:06:37,962 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 45 predicate places. [2024-10-11 17:06:37,962 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 138 transitions, 530 flow [2024-10-11 17:06:37,963 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 17:06:37,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:37,963 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 17:06:37,982 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 17:06:38,164 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 17:06:38,164 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 17:06:38,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:38,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1094805246, now seen corresponding path program 2 times [2024-10-11 17:06:38,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:38,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732004335] [2024-10-11 17:06:38,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:38,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:38,469 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 17:06:38,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:38,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732004335] [2024-10-11 17:06:38,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732004335] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:06:38,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981150259] [2024-10-11 17:06:38,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:06:38,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:06:38,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:06:38,472 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 17:06:38,477 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 17:06:38,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 17:06:38,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:06:38,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 17:06:38,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:06:38,570 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 17:06:38,591 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 17:06:38,628 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:06:38,629 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 17:06:38,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:06:38,672 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 17:06:38,708 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 17:06:38,708 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:06:38,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981150259] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:06:38,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:06:38,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2024-10-11 17:06:38,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216357788] [2024-10-11 17:06:38,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:06:38,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 17:06:38,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:38,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 17:06:38,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2024-10-11 17:06:38,846 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 102 [2024-10-11 17:06:38,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 138 transitions, 530 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 17:06:38,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:38,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 102 [2024-10-11 17:06:38,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:39,061 INFO L124 PetriNetUnfolderBase]: 223/833 cut-off events. [2024-10-11 17:06:39,062 INFO L125 PetriNetUnfolderBase]: For 190/196 co-relation queries the response was YES. [2024-10-11 17:06:39,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1704 conditions, 833 events. 223/833 cut-off events. For 190/196 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4694 event pairs, 82 based on Foata normal form. 5/780 useless extension candidates. Maximal degree in co-relation 1566. Up to 407 conditions per place. [2024-10-11 17:06:39,067 INFO L140 encePairwiseOnDemand]: 87/102 looper letters, 53 selfloop transitions, 39 changer transitions 5/183 dead transitions. [2024-10-11 17:06:39,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 183 transitions, 844 flow [2024-10-11 17:06:39,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 17:06:39,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 17:06:39,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 490 transitions. [2024-10-11 17:06:39,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8006535947712419 [2024-10-11 17:06:39,069 INFO L175 Difference]: Start difference. First operand has 146 places, 138 transitions, 530 flow. Second operand 6 states and 490 transitions. [2024-10-11 17:06:39,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 183 transitions, 844 flow [2024-10-11 17:06:39,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 183 transitions, 820 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-10-11 17:06:39,082 INFO L231 Difference]: Finished difference. Result has 150 places, 174 transitions, 794 flow [2024-10-11 17:06:39,082 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=794, PETRI_PLACES=150, PETRI_TRANSITIONS=174} [2024-10-11 17:06:39,083 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 49 predicate places. [2024-10-11 17:06:39,084 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 174 transitions, 794 flow [2024-10-11 17:06:39,085 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 17:06:39,085 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:39,085 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 17:06:39,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 17:06:39,286 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 17:06:39,287 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 17:06:39,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:39,287 INFO L85 PathProgramCache]: Analyzing trace with hash 69964235, now seen corresponding path program 1 times [2024-10-11 17:06:39,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:39,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475307095] [2024-10-11 17:06:39,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:39,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:39,586 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 17:06:39,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:39,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475307095] [2024-10-11 17:06:39,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475307095] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:06:39,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010043433] [2024-10-11 17:06:39,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:39,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:06:39,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:06:39,590 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 17:06:39,595 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 17:06:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:39,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 17:06:39,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:06:39,768 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 17:06:39,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:06:39,978 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 17:06:39,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010043433] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:06:39,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:06:39,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-10-11 17:06:39,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643714433] [2024-10-11 17:06:39,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:06:39,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 17:06:39,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:39,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 17:06:39,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-10-11 17:06:40,011 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 102 [2024-10-11 17:06:40,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 174 transitions, 794 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 17:06:40,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:40,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 102 [2024-10-11 17:06:40,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:40,382 INFO L124 PetriNetUnfolderBase]: 117/596 cut-off events. [2024-10-11 17:06:40,382 INFO L125 PetriNetUnfolderBase]: For 327/332 co-relation queries the response was YES. [2024-10-11 17:06:40,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1332 conditions, 596 events. 117/596 cut-off events. For 327/332 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2920 event pairs, 15 based on Foata normal form. 3/571 useless extension candidates. Maximal degree in co-relation 1115. Up to 118 conditions per place. [2024-10-11 17:06:40,387 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 21 selfloop transitions, 30 changer transitions 0/191 dead transitions. [2024-10-11 17:06:40,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 191 transitions, 1018 flow [2024-10-11 17:06:40,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-11 17:06:40,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-11 17:06:40,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2604 transitions. [2024-10-11 17:06:40,393 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8509803921568627 [2024-10-11 17:06:40,393 INFO L175 Difference]: Start difference. First operand has 150 places, 174 transitions, 794 flow. Second operand 30 states and 2604 transitions. [2024-10-11 17:06:40,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 191 transitions, 1018 flow [2024-10-11 17:06:40,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 191 transitions, 986 flow, removed 16 selfloop flow, removed 0 redundant places. [2024-10-11 17:06:40,401 INFO L231 Difference]: Finished difference. Result has 182 places, 184 transitions, 914 flow [2024-10-11 17:06:40,401 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=914, PETRI_PLACES=182, PETRI_TRANSITIONS=184} [2024-10-11 17:06:40,402 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 81 predicate places. [2024-10-11 17:06:40,402 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 184 transitions, 914 flow [2024-10-11 17:06:40,403 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 17:06:40,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:40,404 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 17:06:40,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 17:06:40,608 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 17:06:40,609 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 17:06:40,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:40,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1406641484, now seen corresponding path program 2 times [2024-10-11 17:06:40,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:40,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079944033] [2024-10-11 17:06:40,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:40,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:41,086 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 17:06:41,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:41,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079944033] [2024-10-11 17:06:41,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079944033] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:06:41,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:06:41,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 17:06:41,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088973441] [2024-10-11 17:06:41,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:06:41,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 17:06:41,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:41,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 17:06:41,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 17:06:41,225 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 102 [2024-10-11 17:06:41,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 184 transitions, 914 flow. Second operand has 6 states, 6 states have (on average 79.33333333333333) internal successors, (476), 6 states have internal predecessors, (476), 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 17:06:41,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:41,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 102 [2024-10-11 17:06:41,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:41,394 INFO L124 PetriNetUnfolderBase]: 212/866 cut-off events. [2024-10-11 17:06:41,395 INFO L125 PetriNetUnfolderBase]: For 582/626 co-relation queries the response was YES. [2024-10-11 17:06:41,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2126 conditions, 866 events. 212/866 cut-off events. For 582/626 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4938 event pairs, 40 based on Foata normal form. 1/849 useless extension candidates. Maximal degree in co-relation 1908. Up to 338 conditions per place. [2024-10-11 17:06:41,402 INFO L140 encePairwiseOnDemand]: 91/102 looper letters, 72 selfloop transitions, 40 changer transitions 0/223 dead transitions. [2024-10-11 17:06:41,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 223 transitions, 1322 flow [2024-10-11 17:06:41,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 17:06:41,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 17:06:41,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 519 transitions. [2024-10-11 17:06:41,405 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8480392156862745 [2024-10-11 17:06:41,405 INFO L175 Difference]: Start difference. First operand has 182 places, 184 transitions, 914 flow. Second operand 6 states and 519 transitions. [2024-10-11 17:06:41,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 223 transitions, 1322 flow [2024-10-11 17:06:41,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 223 transitions, 1276 flow, removed 5 selfloop flow, removed 18 redundant places. [2024-10-11 17:06:41,418 INFO L231 Difference]: Finished difference. Result has 174 places, 215 transitions, 1236 flow [2024-10-11 17:06:41,418 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1236, PETRI_PLACES=174, PETRI_TRANSITIONS=215} [2024-10-11 17:06:41,419 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 73 predicate places. [2024-10-11 17:06:41,419 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 215 transitions, 1236 flow [2024-10-11 17:06:41,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.33333333333333) internal successors, (476), 6 states have internal predecessors, (476), 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 17:06:41,420 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:41,421 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 17:06:41,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 17:06:41,421 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 17:06:41,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:41,421 INFO L85 PathProgramCache]: Analyzing trace with hash 621326265, now seen corresponding path program 1 times [2024-10-11 17:06:41,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:41,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307629639] [2024-10-11 17:06:41,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:41,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:41,839 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 17:06:41,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:41,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307629639] [2024-10-11 17:06:41,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307629639] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:06:41,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:06:41,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 17:06:41,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058115790] [2024-10-11 17:06:41,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:06:41,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 17:06:41,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:41,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 17:06:41,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 17:06:41,927 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 102 [2024-10-11 17:06:41,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 215 transitions, 1236 flow. Second operand has 6 states, 6 states have (on average 74.33333333333333) internal successors, (446), 6 states have internal predecessors, (446), 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 17:06:41,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:41,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 102 [2024-10-11 17:06:41,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:42,205 INFO L124 PetriNetUnfolderBase]: 361/1267 cut-off events. [2024-10-11 17:06:42,206 INFO L125 PetriNetUnfolderBase]: For 1431/1459 co-relation queries the response was YES. [2024-10-11 17:06:42,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3606 conditions, 1267 events. 361/1267 cut-off events. For 1431/1459 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 7994 event pairs, 87 based on Foata normal form. 2/1233 useless extension candidates. Maximal degree in co-relation 3405. Up to 610 conditions per place. [2024-10-11 17:06:42,217 INFO L140 encePairwiseOnDemand]: 87/102 looper letters, 100 selfloop transitions, 64 changer transitions 10/276 dead transitions. [2024-10-11 17:06:42,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 276 transitions, 1924 flow [2024-10-11 17:06:42,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 17:06:42,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 17:06:42,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 505 transitions. [2024-10-11 17:06:42,219 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8251633986928104 [2024-10-11 17:06:42,220 INFO L175 Difference]: Start difference. First operand has 174 places, 215 transitions, 1236 flow. Second operand 6 states and 505 transitions. [2024-10-11 17:06:42,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 276 transitions, 1924 flow [2024-10-11 17:06:42,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 276 transitions, 1906 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-10-11 17:06:42,235 INFO L231 Difference]: Finished difference. Result has 184 places, 262 transitions, 1804 flow [2024-10-11 17:06:42,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1804, PETRI_PLACES=184, PETRI_TRANSITIONS=262} [2024-10-11 17:06:42,236 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 83 predicate places. [2024-10-11 17:06:42,236 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 262 transitions, 1804 flow [2024-10-11 17:06:42,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.33333333333333) internal successors, (446), 6 states have internal predecessors, (446), 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 17:06:42,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:42,237 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 17:06:42,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 17:06:42,237 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 17:06:42,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:42,238 INFO L85 PathProgramCache]: Analyzing trace with hash -881249672, now seen corresponding path program 1 times [2024-10-11 17:06:42,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:42,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586866616] [2024-10-11 17:06:42,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:42,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:43,440 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 17:06:43,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:43,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586866616] [2024-10-11 17:06:43,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586866616] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:06:43,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:06:43,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 17:06:43,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901405250] [2024-10-11 17:06:43,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:06:43,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:06:43,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:43,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:06:43,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:06:43,738 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 102 [2024-10-11 17:06:43,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 262 transitions, 1804 flow. Second operand has 10 states, 10 states have (on average 69.0) internal successors, (690), 10 states have internal predecessors, (690), 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 17:06:43,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:43,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 102 [2024-10-11 17:06:43,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:44,456 INFO L124 PetriNetUnfolderBase]: 460/1530 cut-off events. [2024-10-11 17:06:44,457 INFO L125 PetriNetUnfolderBase]: For 2900/2975 co-relation queries the response was YES. [2024-10-11 17:06:44,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5175 conditions, 1530 events. 460/1530 cut-off events. For 2900/2975 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 10020 event pairs, 19 based on Foata normal form. 37/1551 useless extension candidates. Maximal degree in co-relation 4957. Up to 571 conditions per place. [2024-10-11 17:06:44,475 INFO L140 encePairwiseOnDemand]: 81/102 looper letters, 191 selfloop transitions, 86 changer transitions 37/411 dead transitions. [2024-10-11 17:06:44,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 411 transitions, 3520 flow [2024-10-11 17:06:44,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 17:06:44,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 17:06:44,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 935 transitions. [2024-10-11 17:06:44,478 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7638888888888888 [2024-10-11 17:06:44,478 INFO L175 Difference]: Start difference. First operand has 184 places, 262 transitions, 1804 flow. Second operand 12 states and 935 transitions. [2024-10-11 17:06:44,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 411 transitions, 3520 flow [2024-10-11 17:06:44,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 411 transitions, 3434 flow, removed 43 selfloop flow, removed 0 redundant places. [2024-10-11 17:06:44,513 INFO L231 Difference]: Finished difference. Result has 203 places, 308 transitions, 2416 flow [2024-10-11 17:06:44,516 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1730, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2416, PETRI_PLACES=203, PETRI_TRANSITIONS=308} [2024-10-11 17:06:44,517 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 102 predicate places. [2024-10-11 17:06:44,517 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 308 transitions, 2416 flow [2024-10-11 17:06:44,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.0) internal successors, (690), 10 states have internal predecessors, (690), 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 17:06:44,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:44,518 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 17:06:44,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 17:06:44,518 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 17:06:44,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:44,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1252528998, now seen corresponding path program 2 times [2024-10-11 17:06:44,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:44,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509938790] [2024-10-11 17:06:44,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:44,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:52,735 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 17:06:52,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:52,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509938790] [2024-10-11 17:06:52,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509938790] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:06:52,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077688417] [2024-10-11 17:06:52,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:06:52,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:06:52,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:06:52,740 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 17:06:52,741 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 17:06:52,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 17:06:52,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:06:52,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-11 17:06:52,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:06:52,869 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 17:06:52,917 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 17:06:52,998 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 17:06:53,043 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 17:06:53,096 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 17:06:53,266 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-10-11 17:06:53,266 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 22 treesize of output 15 [2024-10-11 17:06:53,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:06:53,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:06:53,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:06:53,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:06:53,426 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:06:53,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 60 [2024-10-11 17:06:53,496 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 17:06:53,497 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:06:53,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077688417] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:06:53,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:06:53,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [33] total 41 [2024-10-11 17:06:53,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191913446] [2024-10-11 17:06:53,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:06:53,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:06:53,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:53,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:06:53,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1569, Unknown=0, NotChecked=0, Total=1722 [2024-10-11 17:06:53,736 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 102 [2024-10-11 17:06:53,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 308 transitions, 2416 flow. Second operand has 10 states, 10 states have (on average 69.0) internal successors, (690), 10 states have internal predecessors, (690), 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 17:06:53,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:53,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 102 [2024-10-11 17:06:53,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:54,317 INFO L124 PetriNetUnfolderBase]: 443/1549 cut-off events. [2024-10-11 17:06:54,317 INFO L125 PetriNetUnfolderBase]: For 4454/4565 co-relation queries the response was YES. [2024-10-11 17:06:54,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6035 conditions, 1549 events. 443/1549 cut-off events. For 4454/4565 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 10479 event pairs, 67 based on Foata normal form. 73/1603 useless extension candidates. Maximal degree in co-relation 5808. Up to 614 conditions per place. [2024-10-11 17:06:54,334 INFO L140 encePairwiseOnDemand]: 82/102 looper letters, 154 selfloop transitions, 80 changer transitions 43/374 dead transitions. [2024-10-11 17:06:54,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 374 transitions, 3512 flow [2024-10-11 17:06:54,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 17:06:54,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 17:06:54,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 785 transitions. [2024-10-11 17:06:54,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7696078431372549 [2024-10-11 17:06:54,337 INFO L175 Difference]: Start difference. First operand has 203 places, 308 transitions, 2416 flow. Second operand 10 states and 785 transitions. [2024-10-11 17:06:54,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 374 transitions, 3512 flow [2024-10-11 17:06:54,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 374 transitions, 3488 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-10-11 17:06:54,372 INFO L231 Difference]: Finished difference. Result has 215 places, 299 transitions, 2522 flow [2024-10-11 17:06:54,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=2392, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2522, PETRI_PLACES=215, PETRI_TRANSITIONS=299} [2024-10-11 17:06:54,373 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 114 predicate places. [2024-10-11 17:06:54,373 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 299 transitions, 2522 flow [2024-10-11 17:06:54,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.0) internal successors, (690), 10 states have internal predecessors, (690), 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 17:06:54,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:54,374 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 17:06:54,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 17:06:54,578 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,SelfDestructingSolverStorable9 [2024-10-11 17:06:54,579 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 17:06:54,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:54,579 INFO L85 PathProgramCache]: Analyzing trace with hash 842663080, now seen corresponding path program 3 times [2024-10-11 17:06:54,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:54,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255665513] [2024-10-11 17:06:54,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:54,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:55,631 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 17:06:55,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:55,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255665513] [2024-10-11 17:06:55,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255665513] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:06:55,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:06:55,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-11 17:06:55,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847535871] [2024-10-11 17:06:55,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:06:55,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 17:06:55,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:55,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 17:06:55,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-10-11 17:06:56,207 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 102 [2024-10-11 17:06:56,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 299 transitions, 2522 flow. Second operand has 13 states, 13 states have (on average 63.0) internal successors, (819), 13 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:56,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:56,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 102 [2024-10-11 17:06:56,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:57,287 INFO L124 PetriNetUnfolderBase]: 776/2356 cut-off events. [2024-10-11 17:06:57,288 INFO L125 PetriNetUnfolderBase]: For 9128/9254 co-relation queries the response was YES. [2024-10-11 17:06:57,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10261 conditions, 2356 events. 776/2356 cut-off events. For 9128/9254 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 17485 event pairs, 52 based on Foata normal form. 55/2383 useless extension candidates. Maximal degree in co-relation 10030. Up to 632 conditions per place. [2024-10-11 17:06:57,323 INFO L140 encePairwiseOnDemand]: 78/102 looper letters, 353 selfloop transitions, 100 changer transitions 17/561 dead transitions. [2024-10-11 17:06:57,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 561 transitions, 6168 flow [2024-10-11 17:06:57,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 17:06:57,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 17:06:57,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1113 transitions. [2024-10-11 17:06:57,327 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6819852941176471 [2024-10-11 17:06:57,327 INFO L175 Difference]: Start difference. First operand has 215 places, 299 transitions, 2522 flow. Second operand 16 states and 1113 transitions. [2024-10-11 17:06:57,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 561 transitions, 6168 flow [2024-10-11 17:06:57,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 561 transitions, 5943 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-10-11 17:06:57,390 INFO L231 Difference]: Finished difference. Result has 225 places, 379 transitions, 3877 flow [2024-10-11 17:06:57,391 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=2424, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3877, PETRI_PLACES=225, PETRI_TRANSITIONS=379} [2024-10-11 17:06:57,392 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 124 predicate places. [2024-10-11 17:06:57,392 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 379 transitions, 3877 flow [2024-10-11 17:06:57,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 63.0) internal successors, (819), 13 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:06:57,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:57,394 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 17:06:57,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 17:06:57,394 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 17:06:57,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:57,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2016890024, now seen corresponding path program 4 times [2024-10-11 17:06:57,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:57,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777621345] [2024-10-11 17:06:57,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:57,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:06:58,341 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 17:06:58,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:06:58,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777621345] [2024-10-11 17:06:58,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777621345] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:06:58,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:06:58,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 17:06:58,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374599558] [2024-10-11 17:06:58,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:06:58,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:06:58,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:06:58,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:06:58,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:06:58,739 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 102 [2024-10-11 17:06:58,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 379 transitions, 3877 flow. Second operand has 10 states, 10 states have (on average 69.0) internal successors, (690), 10 states have internal predecessors, (690), 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 17:06:58,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:06:58,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 102 [2024-10-11 17:06:58,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:06:59,697 INFO L124 PetriNetUnfolderBase]: 785/2385 cut-off events. [2024-10-11 17:06:59,698 INFO L125 PetriNetUnfolderBase]: For 11727/11887 co-relation queries the response was YES. [2024-10-11 17:06:59,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10973 conditions, 2385 events. 785/2385 cut-off events. For 11727/11887 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 17803 event pairs, 90 based on Foata normal form. 79/2433 useless extension candidates. Maximal degree in co-relation 10737. Up to 1094 conditions per place. [2024-10-11 17:06:59,729 INFO L140 encePairwiseOnDemand]: 82/102 looper letters, 180 selfloop transitions, 145 changer transitions 12/434 dead transitions. [2024-10-11 17:06:59,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 434 transitions, 5064 flow [2024-10-11 17:06:59,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 17:06:59,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 17:06:59,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 845 transitions. [2024-10-11 17:06:59,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7531194295900179 [2024-10-11 17:06:59,732 INFO L175 Difference]: Start difference. First operand has 225 places, 379 transitions, 3877 flow. Second operand 11 states and 845 transitions. [2024-10-11 17:06:59,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 434 transitions, 5064 flow [2024-10-11 17:06:59,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 434 transitions, 5014 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-10-11 17:06:59,810 INFO L231 Difference]: Finished difference. Result has 237 places, 390 transitions, 4491 flow [2024-10-11 17:06:59,812 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=3827, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4491, PETRI_PLACES=237, PETRI_TRANSITIONS=390} [2024-10-11 17:06:59,813 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 136 predicate places. [2024-10-11 17:06:59,814 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 390 transitions, 4491 flow [2024-10-11 17:06:59,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.0) internal successors, (690), 10 states have internal predecessors, (690), 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 17:06:59,815 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:06:59,815 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 17:06:59,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 17:06:59,815 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 17:06:59,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:06:59,816 INFO L85 PathProgramCache]: Analyzing trace with hash 781735266, now seen corresponding path program 5 times [2024-10-11 17:06:59,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:06:59,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058647904] [2024-10-11 17:06:59,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:06:59,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:06:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:07:05,938 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 17:07:05,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:07:05,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058647904] [2024-10-11 17:07:05,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058647904] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:07:05,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440786793] [2024-10-11 17:07:05,939 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 17:07:05,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:07:05,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:07:05,941 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 17:07:05,941 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 17:07:06,090 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-10-11 17:07:06,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:07:06,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-10-11 17:07:06,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:07:06,430 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 17:07:06,576 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-10-11 17:07:06,577 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 22 treesize of output 15 [2024-10-11 17:07:06,622 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 17:07:06,699 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 17:07:06,775 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 17:07:06,859 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 17:07:06,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:07:06,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:07:06,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:07:06,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:07:07,002 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:07:07,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 60 [2024-10-11 17:07:07,063 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 233 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 17:07:07,064 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:07:08,385 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 17:07:08,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440786793] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 17:07:08,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:07:08,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [33, 27] total 67 [2024-10-11 17:07:08,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111074683] [2024-10-11 17:07:08,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:07:08,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 17:07:08,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:07:08,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 17:07:08,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=4268, Unknown=0, NotChecked=0, Total=4556 [2024-10-11 17:07:09,633 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 102 [2024-10-11 17:07:09,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 390 transitions, 4491 flow. Second operand has 11 states, 11 states have (on average 67.9090909090909) internal successors, (747), 11 states have internal predecessors, (747), 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 17:07:09,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:07:09,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 102 [2024-10-11 17:07:09,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:07:13,139 INFO L124 PetriNetUnfolderBase]: 789/2582 cut-off events. [2024-10-11 17:07:13,139 INFO L125 PetriNetUnfolderBase]: For 15731/15896 co-relation queries the response was YES. [2024-10-11 17:07:13,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12195 conditions, 2582 events. 789/2582 cut-off events. For 15731/15896 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 20087 event pairs, 52 based on Foata normal form. 78/2638 useless extension candidates. Maximal degree in co-relation 11952. Up to 629 conditions per place. [2024-10-11 17:07:13,175 INFO L140 encePairwiseOnDemand]: 83/102 looper letters, 355 selfloop transitions, 111 changer transitions 27/589 dead transitions. [2024-10-11 17:07:13,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 589 transitions, 7447 flow [2024-10-11 17:07:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 17:07:13,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 17:07:13,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1013 transitions. [2024-10-11 17:07:13,179 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7639517345399698 [2024-10-11 17:07:13,179 INFO L175 Difference]: Start difference. First operand has 237 places, 390 transitions, 4491 flow. Second operand 13 states and 1013 transitions. [2024-10-11 17:07:13,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 589 transitions, 7447 flow [2024-10-11 17:07:13,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 589 transitions, 7316 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-10-11 17:07:13,272 INFO L231 Difference]: Finished difference. Result has 251 places, 417 transitions, 5074 flow [2024-10-11 17:07:13,273 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=4383, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5074, PETRI_PLACES=251, PETRI_TRANSITIONS=417} [2024-10-11 17:07:13,273 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 150 predicate places. [2024-10-11 17:07:13,274 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 417 transitions, 5074 flow [2024-10-11 17:07:13,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 67.9090909090909) internal successors, (747), 11 states have internal predecessors, (747), 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 17:07:13,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:07:13,275 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 17:07:13,293 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 17:07:13,475 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 17:07:13,476 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 17:07:13,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:07:13,476 INFO L85 PathProgramCache]: Analyzing trace with hash -878264794, now seen corresponding path program 6 times [2024-10-11 17:07:13,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:07:13,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470885797] [2024-10-11 17:07:13,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:07:13,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:07:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:07:14,216 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 17:07:14,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:07:14,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470885797] [2024-10-11 17:07:14,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470885797] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:07:14,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:07:14,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 17:07:14,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151120787] [2024-10-11 17:07:14,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:07:14,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:07:14,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:07:14,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:07:14,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:07:14,594 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 102 [2024-10-11 17:07:14,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 417 transitions, 5074 flow. Second operand has 10 states, 10 states have (on average 69.0) internal successors, (690), 10 states have internal predecessors, (690), 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 17:07:14,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:07:14,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 102 [2024-10-11 17:07:14,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:07:15,513 INFO L124 PetriNetUnfolderBase]: 793/2557 cut-off events. [2024-10-11 17:07:15,513 INFO L125 PetriNetUnfolderBase]: For 19020/19204 co-relation queries the response was YES. [2024-10-11 17:07:15,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12826 conditions, 2557 events. 793/2557 cut-off events. For 19020/19204 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 19841 event pairs, 123 based on Foata normal form. 97/2621 useless extension candidates. Maximal degree in co-relation 12578. Up to 1095 conditions per place. [2024-10-11 17:07:15,536 INFO L140 encePairwiseOnDemand]: 82/102 looper letters, 208 selfloop transitions, 159 changer transitions 11/475 dead transitions. [2024-10-11 17:07:15,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 475 transitions, 6535 flow [2024-10-11 17:07:15,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 17:07:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 17:07:15,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1047 transitions. [2024-10-11 17:07:15,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7331932773109243 [2024-10-11 17:07:15,538 INFO L175 Difference]: Start difference. First operand has 251 places, 417 transitions, 5074 flow. Second operand 14 states and 1047 transitions. [2024-10-11 17:07:15,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 475 transitions, 6535 flow [2024-10-11 17:07:15,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 475 transitions, 6479 flow, removed 21 selfloop flow, removed 1 redundant places. [2024-10-11 17:07:15,638 INFO L231 Difference]: Finished difference. Result has 269 places, 437 transitions, 5762 flow [2024-10-11 17:07:15,638 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=5018, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5762, PETRI_PLACES=269, PETRI_TRANSITIONS=437} [2024-10-11 17:07:15,639 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 168 predicate places. [2024-10-11 17:07:15,639 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 437 transitions, 5762 flow [2024-10-11 17:07:15,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.0) internal successors, (690), 10 states have internal predecessors, (690), 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 17:07:15,639 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:07:15,639 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 17:07:15,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 17:07:15,640 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 17:07:15,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:07:15,640 INFO L85 PathProgramCache]: Analyzing trace with hash 883853282, now seen corresponding path program 7 times [2024-10-11 17:07:15,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:07:15,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832110309] [2024-10-11 17:07:15,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:07:15,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:07:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:07:20,790 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 17:07:20,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:07:20,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832110309] [2024-10-11 17:07:20,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832110309] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:07:20,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487626684] [2024-10-11 17:07:20,791 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 17:07:20,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:07:20,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:07:20,793 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 17:07:20,794 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 17:07:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:07:20,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-10-11 17:07:20,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:07:21,130 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 17:07:21,272 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 17:07:21,340 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 17:07:21,407 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 17:07:21,490 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 17:07:21,575 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-10-11 17:07:21,575 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 22 treesize of output 15 [2024-10-11 17:07:21,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:07:21,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:07:21,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:07:21,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:07:21,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:07:21,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 60 [2024-10-11 17:07:21,711 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-10-11 17:07:21,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:07:22,874 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 17:07:22,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487626684] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 17:07:22,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:07:22,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [33, 21] total 61 [2024-10-11 17:07:22,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955262476] [2024-10-11 17:07:22,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:07:22,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 17:07:22,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:07:22,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 17:07:22,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=3499, Unknown=0, NotChecked=0, Total=3782 [2024-10-11 17:07:24,292 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 102 [2024-10-11 17:07:24,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 437 transitions, 5762 flow. Second operand has 11 states, 11 states have (on average 67.9090909090909) internal successors, (747), 11 states have internal predecessors, (747), 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 17:07:24,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:07:24,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 102 [2024-10-11 17:07:24,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:07:27,381 INFO L124 PetriNetUnfolderBase]: 871/2768 cut-off events. [2024-10-11 17:07:27,382 INFO L125 PetriNetUnfolderBase]: For 23672/23814 co-relation queries the response was YES. [2024-10-11 17:07:27,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14536 conditions, 2768 events. 871/2768 cut-off events. For 23672/23814 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 21502 event pairs, 30 based on Foata normal form. 74/2824 useless extension candidates. Maximal degree in co-relation 14280. Up to 1023 conditions per place. [2024-10-11 17:07:27,406 INFO L140 encePairwiseOnDemand]: 78/102 looper letters, 213 selfloop transitions, 245 changer transitions 18/572 dead transitions. [2024-10-11 17:07:27,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 572 transitions, 8464 flow [2024-10-11 17:07:27,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 17:07:27,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 17:07:27,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 937 transitions. [2024-10-11 17:07:27,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7655228758169934 [2024-10-11 17:07:27,409 INFO L175 Difference]: Start difference. First operand has 269 places, 437 transitions, 5762 flow. Second operand 12 states and 937 transitions. [2024-10-11 17:07:27,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 572 transitions, 8464 flow [2024-10-11 17:07:27,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 572 transitions, 7980 flow, removed 82 selfloop flow, removed 5 redundant places. [2024-10-11 17:07:27,550 INFO L231 Difference]: Finished difference. Result has 281 places, 504 transitions, 7293 flow [2024-10-11 17:07:27,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=5352, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7293, PETRI_PLACES=281, PETRI_TRANSITIONS=504} [2024-10-11 17:07:27,551 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 180 predicate places. [2024-10-11 17:07:27,552 INFO L471 AbstractCegarLoop]: Abstraction has has 281 places, 504 transitions, 7293 flow [2024-10-11 17:07:27,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 67.9090909090909) internal successors, (747), 11 states have internal predecessors, (747), 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 17:07:27,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:07:27,552 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 17:07:27,570 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 17:07:27,753 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,SelfDestructingSolverStorable14 [2024-10-11 17:07:27,753 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 17:07:27,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:07:27,754 INFO L85 PathProgramCache]: Analyzing trace with hash -233936112, now seen corresponding path program 8 times [2024-10-11 17:07:27,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:07:27,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137641105] [2024-10-11 17:07:27,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:07:27,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:07:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:07:32,468 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 17:07:32,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:07:32,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137641105] [2024-10-11 17:07:32,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137641105] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:07:32,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625395262] [2024-10-11 17:07:32,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:07:32,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:07:32,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:07:32,471 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 17:07:32,473 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 17:07:32,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 17:07:32,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:07:32,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-11 17:07:32,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:07:32,607 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 17:07:32,649 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 17:07:32,732 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 17:07:32,776 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 17:07:32,828 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 17:07:32,897 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-10-11 17:07:32,898 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 22 treesize of output 15 [2024-10-11 17:07:32,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:07:32,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:07:32,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:07:32,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:07:32,984 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:07:32,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 60 [2024-10-11 17:07:33,022 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 17:07:33,022 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:07:33,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625395262] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:07:33,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:07:33,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [32] total 40 [2024-10-11 17:07:33,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483587621] [2024-10-11 17:07:33,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:07:33,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:07:33,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:07:33,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:07:33,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1492, Unknown=0, NotChecked=0, Total=1640 [2024-10-11 17:07:33,311 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 102 [2024-10-11 17:07:33,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 504 transitions, 7293 flow. Second operand has 10 states, 10 states have (on average 69.0) internal successors, (690), 10 states have internal predecessors, (690), 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 17:07:33,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:07:33,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 102 [2024-10-11 17:07:33,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:07:33,932 INFO L124 PetriNetUnfolderBase]: 874/2763 cut-off events. [2024-10-11 17:07:33,932 INFO L125 PetriNetUnfolderBase]: For 28733/28895 co-relation queries the response was YES. [2024-10-11 17:07:33,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15744 conditions, 2763 events. 874/2763 cut-off events. For 28733/28895 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 21582 event pairs, 113 based on Foata normal form. 73/2791 useless extension candidates. Maximal degree in co-relation 15484. Up to 1241 conditions per place. [2024-10-11 17:07:33,960 INFO L140 encePairwiseOnDemand]: 82/102 looper letters, 278 selfloop transitions, 159 changer transitions 22/556 dead transitions. [2024-10-11 17:07:33,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 556 transitions, 8887 flow [2024-10-11 17:07:33,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 17:07:33,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 17:07:33,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 769 transitions. [2024-10-11 17:07:33,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.753921568627451 [2024-10-11 17:07:33,962 INFO L175 Difference]: Start difference. First operand has 281 places, 504 transitions, 7293 flow. Second operand 10 states and 769 transitions. [2024-10-11 17:07:33,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 556 transitions, 8887 flow [2024-10-11 17:07:34,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 556 transitions, 8625 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-10-11 17:07:34,129 INFO L231 Difference]: Finished difference. Result has 291 places, 512 transitions, 7649 flow [2024-10-11 17:07:34,130 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=7052, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7649, PETRI_PLACES=291, PETRI_TRANSITIONS=512} [2024-10-11 17:07:34,130 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 190 predicate places. [2024-10-11 17:07:34,130 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 512 transitions, 7649 flow [2024-10-11 17:07:34,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.0) internal successors, (690), 10 states have internal predecessors, (690), 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 17:07:34,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:07:34,131 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 17:07:34,148 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 17:07:34,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:07:34,332 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 17:07:34,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:07:34,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1665704217, now seen corresponding path program 1 times [2024-10-11 17:07:34,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:07:34,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172361410] [2024-10-11 17:07:34,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:07:34,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:07:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat